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638
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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638
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5 */
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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12 #define NGX_HTTP_MP4_TRAK_ATOM 0
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13 #define NGX_HTTP_MP4_TKHD_ATOM 1
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14 #define NGX_HTTP_MP4_MDIA_ATOM 2
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15 #define NGX_HTTP_MP4_MDHD_ATOM 3
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16 #define NGX_HTTP_MP4_HDLR_ATOM 4
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17 #define NGX_HTTP_MP4_MINF_ATOM 5
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18 #define NGX_HTTP_MP4_VMHD_ATOM 6
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19 #define NGX_HTTP_MP4_SMHD_ATOM 7
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20 #define NGX_HTTP_MP4_DINF_ATOM 8
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21 #define NGX_HTTP_MP4_STBL_ATOM 9
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22 #define NGX_HTTP_MP4_STSD_ATOM 10
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23 #define NGX_HTTP_MP4_STTS_ATOM 11
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24 #define NGX_HTTP_MP4_STTS_DATA 12
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25 #define NGX_HTTP_MP4_STSS_ATOM 13
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26 #define NGX_HTTP_MP4_STSS_DATA 14
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27 #define NGX_HTTP_MP4_CTTS_ATOM 15
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28 #define NGX_HTTP_MP4_CTTS_DATA 16
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29 #define NGX_HTTP_MP4_STSC_ATOM 17
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30 #define NGX_HTTP_MP4_STSC_CHUNK 18
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31 #define NGX_HTTP_MP4_STSC_DATA 19
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32 #define NGX_HTTP_MP4_STSZ_ATOM 20
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33 #define NGX_HTTP_MP4_STSZ_DATA 21
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34 #define NGX_HTTP_MP4_STCO_ATOM 22
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35 #define NGX_HTTP_MP4_STCO_DATA 23
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640
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36 #define NGX_HTTP_MP4_CO64_ATOM 24
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37 #define NGX_HTTP_MP4_CO64_DATA 25
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38
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39 #define NGX_HTTP_MP4_LAST_ATOM NGX_HTTP_MP4_CO64_DATA
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638
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40
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41
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42 typedef struct {
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43 size_t buffer_size;
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44 size_t max_buffer_size;
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45 } ngx_http_mp4_conf_t;
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46
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47
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48 typedef struct {
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49 u_char chunk[4];
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50 u_char samples[4];
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51 u_char id[4];
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52 } ngx_mp4_stsc_entry_t;
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53
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54
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55 typedef struct {
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56 uint32_t timescale;
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57 uint32_t time_to_sample_entries;
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58 uint32_t sample_to_chunk_entries;
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59 uint32_t sync_samples_entries;
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60 uint32_t composition_offset_entries;
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61 uint32_t sample_sizes_entries;
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62 uint32_t chunks;
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63
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64 ngx_uint_t start_sample;
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65 ngx_uint_t start_chunk;
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66 ngx_uint_t chunk_samples;
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67 uint64_t chunk_samples_size;
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68 off_t start_offset;
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69
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70 size_t tkhd_size;
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71 size_t mdhd_size;
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72 size_t hdlr_size;
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73 size_t vmhd_size;
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74 size_t smhd_size;
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75 size_t dinf_size;
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76 size_t size;
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77
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78 ngx_chain_t out[NGX_HTTP_MP4_LAST_ATOM + 1];
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79
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80 ngx_buf_t trak_atom_buf;
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81 ngx_buf_t tkhd_atom_buf;
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82 ngx_buf_t mdia_atom_buf;
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83 ngx_buf_t mdhd_atom_buf;
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84 ngx_buf_t hdlr_atom_buf;
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85 ngx_buf_t minf_atom_buf;
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86 ngx_buf_t vmhd_atom_buf;
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87 ngx_buf_t smhd_atom_buf;
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88 ngx_buf_t dinf_atom_buf;
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89 ngx_buf_t stbl_atom_buf;
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90 ngx_buf_t stsd_atom_buf;
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91 ngx_buf_t stts_atom_buf;
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92 ngx_buf_t stts_data_buf;
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93 ngx_buf_t stss_atom_buf;
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94 ngx_buf_t stss_data_buf;
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95 ngx_buf_t ctts_atom_buf;
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96 ngx_buf_t ctts_data_buf;
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97 ngx_buf_t stsc_atom_buf;
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98 ngx_buf_t stsc_chunk_buf;
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99 ngx_buf_t stsc_data_buf;
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100 ngx_buf_t stsz_atom_buf;
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101 ngx_buf_t stsz_data_buf;
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102 ngx_buf_t stco_atom_buf;
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103 ngx_buf_t stco_data_buf;
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104 ngx_buf_t co64_atom_buf;
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105 ngx_buf_t co64_data_buf;
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106
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107 ngx_mp4_stsc_entry_t stsc_chunk_entry;
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108 } ngx_http_mp4_trak_t;
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109
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110
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111 typedef struct {
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112 ngx_file_t file;
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113
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114 u_char *buffer;
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115 u_char *buffer_start;
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116 u_char *buffer_pos;
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117 u_char *buffer_end;
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118 size_t buffer_size;
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119
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120 off_t offset;
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121 off_t end;
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122 off_t content_length;
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123 ngx_uint_t start;
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124 uint32_t timescale;
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125 ngx_http_request_t *request;
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126 ngx_array_t trak;
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127 ngx_http_mp4_trak_t traks[2];
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128
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129 size_t ftyp_size;
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130 size_t moov_size;
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131
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132 ngx_chain_t *out;
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133 ngx_chain_t ftyp_atom;
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134 ngx_chain_t moov_atom;
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135 ngx_chain_t mvhd_atom;
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136 ngx_chain_t mdat_atom;
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137 ngx_chain_t mdat_data;
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138
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139 ngx_buf_t ftyp_atom_buf;
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140 ngx_buf_t moov_atom_buf;
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141 ngx_buf_t mvhd_atom_buf;
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142 ngx_buf_t mdat_atom_buf;
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143 ngx_buf_t mdat_data_buf;
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144
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145 u_char moov_atom_header[8];
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146 u_char mdat_atom_header[16];
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147 } ngx_http_mp4_file_t;
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148
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149
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150 typedef struct {
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151 char *name;
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152 ngx_int_t (*handler)(ngx_http_mp4_file_t *mp4,
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153 uint64_t atom_data_size);
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154 } ngx_http_mp4_atom_handler_t;
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155
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156
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157 #define ngx_mp4_atom_header(mp4) (mp4->buffer_pos - 8)
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158 #define ngx_mp4_atom_data(mp4) mp4->buffer_pos
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670
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159 #define ngx_mp4_atom_data_size(t) (uint64_t) (sizeof(t) - 8)
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160 #define ngx_mp4_atom_next(mp4, n) mp4->buffer_pos += n; mp4->offset += n
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161
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162
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163 #define ngx_mp4_set_atom_name(p, n1, n2, n3, n4) \
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164 ((u_char *) (p))[4] = n1; \
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165 ((u_char *) (p))[5] = n2; \
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166 ((u_char *) (p))[6] = n3; \
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167 ((u_char *) (p))[7] = n4
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168
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169 #define ngx_mp4_get_32value(p) \
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658
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170 ( ((uint32_t) ((u_char *) (p))[0] << 24) \
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171 + ( ((u_char *) (p))[1] << 16) \
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172 + ( ((u_char *) (p))[2] << 8) \
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173 + ( ((u_char *) (p))[3]) )
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174
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175 #define ngx_mp4_set_32value(p, n) \
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176 ((u_char *) (p))[0] = (u_char) ((n) >> 24); \
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177 ((u_char *) (p))[1] = (u_char) ((n) >> 16); \
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178 ((u_char *) (p))[2] = (u_char) ((n) >> 8); \
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179 ((u_char *) (p))[3] = (u_char) (n)
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180
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181 #define ngx_mp4_get_64value(p) \
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182 ( ((uint64_t) ((u_char *) (p))[0] << 56) \
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183 + ((uint64_t) ((u_char *) (p))[1] << 48) \
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184 + ((uint64_t) ((u_char *) (p))[2] << 40) \
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185 + ((uint64_t) ((u_char *) (p))[3] << 32) \
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186 + ((uint64_t) ((u_char *) (p))[4] << 24) \
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187 + ( ((u_char *) (p))[5] << 16) \
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188 + ( ((u_char *) (p))[6] << 8) \
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189 + ( ((u_char *) (p))[7]) )
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190
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191 #define ngx_mp4_set_64value(p, n) \
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642
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192 ((u_char *) (p))[0] = (u_char) ((uint64_t) (n) >> 56); \
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193 ((u_char *) (p))[1] = (u_char) ((uint64_t) (n) >> 48); \
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194 ((u_char *) (p))[2] = (u_char) ((uint64_t) (n) >> 40); \
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195 ((u_char *) (p))[3] = (u_char) ((uint64_t) (n) >> 32); \
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196 ((u_char *) (p))[4] = (u_char) ( (n) >> 24); \
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197 ((u_char *) (p))[5] = (u_char) ( (n) >> 16); \
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198 ((u_char *) (p))[6] = (u_char) ( (n) >> 8); \
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199 ((u_char *) (p))[7] = (u_char) (n)
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200
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201 #define ngx_mp4_last_trak(mp4) \
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202 &((ngx_http_mp4_trak_t *) mp4->trak.elts)[mp4->trak.nelts - 1]
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203
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204
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205 static ngx_int_t ngx_http_mp4_process(ngx_http_mp4_file_t *mp4);
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206 static ngx_int_t ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
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207 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size);
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208 static ngx_int_t ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size);
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209 static ngx_int_t ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4,
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210 uint64_t atom_data_size);
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211 static ngx_int_t ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4,
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212 uint64_t atom_data_size);
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213 static ngx_int_t ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4,
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214 uint64_t atom_data_size);
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215 static size_t ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4,
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216 off_t start_offset);
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217 static ngx_int_t ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4,
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218 uint64_t atom_data_size);
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219 static ngx_int_t ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4,
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220 uint64_t atom_data_size);
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221 static void ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
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222 ngx_http_mp4_trak_t *trak);
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223 static ngx_int_t ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4,
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224 uint64_t atom_data_size);
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225 static ngx_int_t ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4,
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226 uint64_t atom_data_size);
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227 static ngx_int_t ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4,
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228 uint64_t atom_data_size);
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229 static void ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
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230 ngx_http_mp4_trak_t *trak);
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231 static ngx_int_t ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4,
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232 uint64_t atom_data_size);
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233 static ngx_int_t ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4,
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234 uint64_t atom_data_size);
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235 static ngx_int_t ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4,
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236 uint64_t atom_data_size);
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237 static void ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
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238 ngx_http_mp4_trak_t *trak);
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239 static ngx_int_t ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4,
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240 uint64_t atom_data_size);
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241 static ngx_int_t ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4,
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242 uint64_t atom_data_size);
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243 static ngx_int_t ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4,
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244 uint64_t atom_data_size);
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245 static ngx_int_t ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4,
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246 uint64_t atom_data_size);
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247 static void ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
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248 ngx_http_mp4_trak_t *trak);
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249 static ngx_int_t ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4,
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250 uint64_t atom_data_size);
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251 static ngx_int_t ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4,
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252 uint64_t atom_data_size);
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253 static ngx_int_t ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
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254 ngx_http_mp4_trak_t *trak);
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255 static ngx_int_t ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4,
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256 uint64_t atom_data_size);
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257 static ngx_int_t ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
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258 ngx_http_mp4_trak_t *trak);
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259 static ngx_int_t ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4,
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260 uint64_t atom_data_size);
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261 static void ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
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262 ngx_http_mp4_trak_t *trak);
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263 static ngx_int_t ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4,
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264 uint64_t atom_data_size);
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265 static ngx_int_t ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
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266 ngx_http_mp4_trak_t *trak);
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267 static ngx_int_t ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4,
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268 uint64_t atom_data_size);
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670
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269 static ngx_int_t ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
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638
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270 ngx_http_mp4_trak_t *trak);
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271 static ngx_int_t ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4,
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272 uint64_t atom_data_size);
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273 static ngx_int_t ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
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274 ngx_http_mp4_trak_t *trak);
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275 static void ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
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276 ngx_http_mp4_trak_t *trak, int32_t adjustment);
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640
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277 static ngx_int_t ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4,
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278 uint64_t atom_data_size);
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279 static ngx_int_t ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
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280 ngx_http_mp4_trak_t *trak);
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281 static void ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
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282 ngx_http_mp4_trak_t *trak, off_t adjustment);
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638
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283 static char *ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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284 static void *ngx_http_mp4_create_conf(ngx_conf_t *cf);
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285 static char *ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child);
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286
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287 static ngx_command_t ngx_http_mp4_commands[] = {
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288
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289 { ngx_string("mp4"),
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290 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
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291 ngx_http_mp4,
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292 0,
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293 0,
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294 NULL },
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295
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296 { ngx_string("mp4_buffer_size"),
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297 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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298 ngx_conf_set_size_slot,
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299 NGX_HTTP_LOC_CONF_OFFSET,
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300 offsetof(ngx_http_mp4_conf_t, buffer_size),
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301 NULL },
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302
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303 { ngx_string("mp4_max_buffer_size"),
|
|
|
304 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
305 ngx_conf_set_size_slot,
|
|
|
306 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
307 offsetof(ngx_http_mp4_conf_t, max_buffer_size),
|
|
|
308 NULL },
|
|
|
309
|
|
|
310 ngx_null_command
|
|
|
311 };
|
|
|
312
|
|
|
313
|
|
|
314 static ngx_http_module_t ngx_http_mp4_module_ctx = {
|
|
|
315 NULL, /* preconfiguration */
|
|
|
316 NULL, /* postconfiguration */
|
|
|
317
|
|
|
318 NULL, /* create main configuration */
|
|
|
319 NULL, /* init main configuration */
|
|
|
320
|
|
|
321 NULL, /* create server configuration */
|
|
|
322 NULL, /* merge server configuration */
|
|
|
323
|
|
|
324 ngx_http_mp4_create_conf, /* create location configuration */
|
|
|
325 ngx_http_mp4_merge_conf /* merge location configuration */
|
|
|
326 };
|
|
|
327
|
|
|
328
|
|
|
329 ngx_module_t ngx_http_mp4_module = {
|
|
|
330 NGX_MODULE_V1,
|
|
|
331 &ngx_http_mp4_module_ctx, /* module context */
|
|
|
332 ngx_http_mp4_commands, /* module directives */
|
|
|
333 NGX_HTTP_MODULE, /* module type */
|
|
|
334 NULL, /* init master */
|
|
|
335 NULL, /* init module */
|
|
|
336 NULL, /* init process */
|
|
|
337 NULL, /* init thread */
|
|
|
338 NULL, /* exit thread */
|
|
|
339 NULL, /* exit process */
|
|
|
340 NULL, /* exit master */
|
|
|
341 NGX_MODULE_V1_PADDING
|
|
|
342 };
|
|
|
343
|
|
|
344
|
|
|
345 static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = {
|
|
|
346 { "ftyp", ngx_http_mp4_read_ftyp_atom },
|
|
|
347 { "moov", ngx_http_mp4_read_moov_atom },
|
|
|
348 { "mdat", ngx_http_mp4_read_mdat_atom },
|
|
|
349 { NULL, NULL }
|
|
|
350 };
|
|
|
351
|
|
|
352 static ngx_http_mp4_atom_handler_t ngx_http_mp4_moov_atoms[] = {
|
|
|
353 { "mvhd", ngx_http_mp4_read_mvhd_atom },
|
|
|
354 { "trak", ngx_http_mp4_read_trak_atom },
|
|
|
355 { "cmov", ngx_http_mp4_read_cmov_atom },
|
|
|
356 { NULL, NULL }
|
|
|
357 };
|
|
|
358
|
|
|
359 static ngx_http_mp4_atom_handler_t ngx_http_mp4_trak_atoms[] = {
|
|
|
360 { "tkhd", ngx_http_mp4_read_tkhd_atom },
|
|
|
361 { "mdia", ngx_http_mp4_read_mdia_atom },
|
|
|
362 { NULL, NULL }
|
|
|
363 };
|
|
|
364
|
|
|
365 static ngx_http_mp4_atom_handler_t ngx_http_mp4_mdia_atoms[] = {
|
|
|
366 { "mdhd", ngx_http_mp4_read_mdhd_atom },
|
|
|
367 { "hdlr", ngx_http_mp4_read_hdlr_atom },
|
|
|
368 { "minf", ngx_http_mp4_read_minf_atom },
|
|
|
369 { NULL, NULL }
|
|
|
370 };
|
|
|
371
|
|
|
372 static ngx_http_mp4_atom_handler_t ngx_http_mp4_minf_atoms[] = {
|
|
|
373 { "vmhd", ngx_http_mp4_read_vmhd_atom },
|
|
|
374 { "smhd", ngx_http_mp4_read_smhd_atom },
|
|
|
375 { "dinf", ngx_http_mp4_read_dinf_atom },
|
|
|
376 { "stbl", ngx_http_mp4_read_stbl_atom },
|
|
|
377 { NULL, NULL }
|
|
|
378 };
|
|
|
379
|
|
|
380 static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = {
|
|
|
381 { "stsd", ngx_http_mp4_read_stsd_atom },
|
|
|
382 { "stts", ngx_http_mp4_read_stts_atom },
|
|
|
383 { "stss", ngx_http_mp4_read_stss_atom },
|
|
|
384 { "ctts", ngx_http_mp4_read_ctts_atom },
|
|
|
385 { "stsc", ngx_http_mp4_read_stsc_atom },
|
|
|
386 { "stsz", ngx_http_mp4_read_stsz_atom },
|
|
|
387 { "stco", ngx_http_mp4_read_stco_atom },
|
|
640
|
388 { "co64", ngx_http_mp4_read_co64_atom },
|
|
638
|
389 { NULL, NULL }
|
|
|
390 };
|
|
|
391
|
|
|
392
|
|
|
393 static ngx_int_t
|
|
|
394 ngx_http_mp4_handler(ngx_http_request_t *r)
|
|
|
395 {
|
|
|
396 u_char *last;
|
|
|
397 size_t root;
|
|
|
398 ngx_int_t rc, start;
|
|
|
399 ngx_uint_t level;
|
|
|
400 ngx_str_t path, value;
|
|
|
401 ngx_log_t *log;
|
|
|
402 ngx_buf_t *b;
|
|
|
403 ngx_chain_t out;
|
|
|
404 ngx_http_mp4_file_t *mp4;
|
|
|
405 ngx_open_file_info_t of;
|
|
|
406 ngx_http_core_loc_conf_t *clcf;
|
|
|
407
|
|
|
408 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
|
|
409 return NGX_HTTP_NOT_ALLOWED;
|
|
|
410 }
|
|
|
411
|
|
|
412 if (r->uri.data[r->uri.len - 1] == '/') {
|
|
|
413 return NGX_DECLINED;
|
|
|
414 }
|
|
|
415
|
|
|
416 rc = ngx_http_discard_request_body(r);
|
|
|
417
|
|
|
418 if (rc != NGX_OK) {
|
|
|
419 return rc;
|
|
|
420 }
|
|
|
421
|
|
|
422 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
423 if (last == NULL) {
|
|
|
424 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
425 }
|
|
|
426
|
|
|
427 log = r->connection->log;
|
|
|
428
|
|
|
429 path.len = last - path.data;
|
|
|
430
|
|
|
431 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
|
|
|
432 "http mp4 filename: \"%V\"", &path);
|
|
|
433
|
|
|
434 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
435
|
|
|
436 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
|
|
|
437
|
|
|
438 of.read_ahead = clcf->read_ahead;
|
|
|
439 of.directio = NGX_MAX_OFF_T_VALUE;
|
|
|
440 of.valid = clcf->open_file_cache_valid;
|
|
|
441 of.min_uses = clcf->open_file_cache_min_uses;
|
|
|
442 of.errors = clcf->open_file_cache_errors;
|
|
|
443 of.events = clcf->open_file_cache_events;
|
|
664
|
444
|
|
|
445 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
|
|
|
446 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
447 }
|
|
638
|
448
|
|
|
449 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
|
|
|
450 != NGX_OK)
|
|
|
451 {
|
|
|
452 switch (of.err) {
|
|
|
453
|
|
|
454 case 0:
|
|
|
455 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
456
|
|
|
457 case NGX_ENOENT:
|
|
|
458 case NGX_ENOTDIR:
|
|
|
459 case NGX_ENAMETOOLONG:
|
|
|
460
|
|
|
461 level = NGX_LOG_ERR;
|
|
|
462 rc = NGX_HTTP_NOT_FOUND;
|
|
|
463 break;
|
|
|
464
|
|
|
465 case NGX_EACCES:
|
|
662
|
466 #if (NGX_HAVE_OPENAT)
|
|
|
467 case NGX_EMLINK:
|
|
|
468 case NGX_ELOOP:
|
|
|
469 #endif
|
|
638
|
470
|
|
|
471 level = NGX_LOG_ERR;
|
|
|
472 rc = NGX_HTTP_FORBIDDEN;
|
|
|
473 break;
|
|
|
474
|
|
|
475 default:
|
|
|
476
|
|
|
477 level = NGX_LOG_CRIT;
|
|
|
478 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
479 break;
|
|
|
480 }
|
|
|
481
|
|
|
482 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
|
|
|
483 ngx_log_error(level, log, of.err,
|
|
|
484 "%s \"%s\" failed", of.failed, path.data);
|
|
|
485 }
|
|
|
486
|
|
|
487 return rc;
|
|
|
488 }
|
|
|
489
|
|
|
490 if (!of.is_file) {
|
|
|
491
|
|
|
492 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
|
|
|
493 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
494 ngx_close_file_n " \"%s\" failed", path.data);
|
|
|
495 }
|
|
|
496
|
|
|
497 return NGX_DECLINED;
|
|
|
498 }
|
|
|
499
|
|
|
500 r->root_tested = !r->error_page;
|
|
|
501 r->allow_ranges = 1;
|
|
|
502
|
|
|
503 start = -1;
|
|
|
504 r->headers_out.content_length_n = of.size;
|
|
|
505 mp4 = NULL;
|
|
|
506 b = NULL;
|
|
|
507
|
|
|
508 if (r->args.len) {
|
|
|
509
|
|
|
510 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
|
|
|
511
|
|
642
|
512 /*
|
|
|
513 * A Flash player may send start value with a lot of digits
|
|
|
514 * after dot so strtod() is used instead of atofp(). NaNs and
|
|
|
515 * infinities become negative numbers after (int) conversion.
|
|
|
516 */
|
|
|
517
|
|
|
518 ngx_set_errno(0);
|
|
|
519 start = (int) (strtod((char *) value.data, NULL) * 1000);
|
|
|
520
|
|
|
521 if (ngx_errno == 0 && start >= 0) {
|
|
638
|
522 r->allow_ranges = 0;
|
|
|
523
|
|
|
524 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t));
|
|
|
525 if (mp4 == NULL) {
|
|
|
526 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
527 }
|
|
|
528
|
|
|
529 mp4->file.fd = of.fd;
|
|
|
530 mp4->file.name = path;
|
|
|
531 mp4->file.log = r->connection->log;;
|
|
|
532 mp4->end = of.size;
|
|
|
533 mp4->start = (ngx_uint_t) start;
|
|
|
534 mp4->request = r;
|
|
|
535
|
|
|
536 switch (ngx_http_mp4_process(mp4)) {
|
|
|
537
|
|
|
538 case NGX_DECLINED:
|
|
|
539 if (mp4->buffer) {
|
|
|
540 ngx_pfree(r->pool, mp4->buffer);
|
|
|
541 }
|
|
|
542
|
|
|
543 ngx_pfree(r->pool, mp4);
|
|
|
544 mp4 = NULL;
|
|
|
545
|
|
|
546 break;
|
|
|
547
|
|
|
548 case NGX_OK:
|
|
|
549 r->headers_out.content_length_n = mp4->content_length;
|
|
|
550 break;
|
|
|
551
|
|
|
552 default: /* NGX_ERROR */
|
|
|
553 if (mp4->buffer) {
|
|
|
554 ngx_pfree(r->pool, mp4->buffer);
|
|
|
555 }
|
|
|
556
|
|
|
557 ngx_pfree(r->pool, mp4);
|
|
|
558
|
|
|
559 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
560 }
|
|
|
561 }
|
|
|
562 }
|
|
|
563 }
|
|
|
564
|
|
|
565 log->action = "sending mp4 to client";
|
|
|
566
|
|
|
567 if (clcf->directio <= of.size) {
|
|
|
568
|
|
|
569 /*
|
|
|
570 * DIRECTIO is set on transfer only
|
|
|
571 * to allow kernel to cache "moov" atom
|
|
|
572 */
|
|
|
573
|
|
|
574 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) {
|
|
|
575 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
576 ngx_directio_on_n " \"%s\" failed", path.data);
|
|
|
577 }
|
|
|
578
|
|
|
579 of.is_directio = 1;
|
|
|
580
|
|
|
581 if (mp4) {
|
|
|
582 mp4->file.directio = 1;
|
|
|
583 }
|
|
|
584 }
|
|
|
585
|
|
|
586 r->headers_out.status = NGX_HTTP_OK;
|
|
|
587 r->headers_out.last_modified_time = of.mtime;
|
|
|
588
|
|
680
|
589 if (ngx_http_set_etag(r) != NGX_OK) {
|
|
|
590 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
591 }
|
|
|
592
|
|
638
|
593 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
|
594 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
595 }
|
|
|
596
|
|
|
597 if (mp4 == NULL) {
|
|
|
598 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
599 if (b == NULL) {
|
|
|
600 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
601 }
|
|
|
602
|
|
|
603 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
604 if (b->file == NULL) {
|
|
|
605 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
606 }
|
|
|
607 }
|
|
|
608
|
|
|
609 rc = ngx_http_send_header(r);
|
|
|
610
|
|
|
611 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
612 return rc;
|
|
|
613 }
|
|
|
614
|
|
|
615 if (mp4) {
|
|
|
616 return ngx_http_output_filter(r, mp4->out);
|
|
|
617 }
|
|
|
618
|
|
|
619 b->file_pos = 0;
|
|
|
620 b->file_last = of.size;
|
|
|
621
|
|
|
622 b->in_file = b->file_last ? 1 : 0;
|
|
674
|
623 b->last_buf = (r == r->main) ? 1 : 0;
|
|
638
|
624 b->last_in_chain = 1;
|
|
|
625
|
|
|
626 b->file->fd = of.fd;
|
|
|
627 b->file->name = path;
|
|
|
628 b->file->log = log;
|
|
|
629 b->file->directio = of.is_directio;
|
|
|
630
|
|
|
631 out.buf = b;
|
|
|
632 out.next = NULL;
|
|
|
633
|
|
|
634 return ngx_http_output_filter(r, &out);
|
|
|
635 }
|
|
|
636
|
|
|
637
|
|
|
638 static ngx_int_t
|
|
|
639 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
|
640 {
|
|
|
641 off_t start_offset, adjustment;
|
|
|
642 ngx_int_t rc;
|
|
|
643 ngx_uint_t i, j;
|
|
|
644 ngx_chain_t **prev;
|
|
|
645 ngx_http_mp4_trak_t *trak;
|
|
|
646 ngx_http_mp4_conf_t *conf;
|
|
|
647
|
|
|
648 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
649 "mp4 start:%ui", mp4->start);
|
|
|
650
|
|
|
651 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
652
|
|
|
653 mp4->buffer_size = conf->buffer_size;
|
|
|
654
|
|
|
655 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
|
656 if (rc != NGX_OK) {
|
|
|
657 return rc;
|
|
|
658 }
|
|
|
659
|
|
|
660 if (mp4->trak.nelts == 0) {
|
|
|
661 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
662 "no mp4 trak atoms were found in \"%s\"",
|
|
|
663 mp4->file.name.data);
|
|
|
664 return NGX_ERROR;
|
|
|
665 }
|
|
|
666
|
|
|
667 if (mp4->mdat_atom.buf == NULL) {
|
|
|
668 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
669 "no mp4 mdat atom was found in \"%s\"",
|
|
|
670 mp4->file.name.data);
|
|
|
671 return NGX_ERROR;
|
|
|
672 }
|
|
|
673
|
|
|
674 prev = &mp4->out;
|
|
|
675
|
|
|
676 if (mp4->ftyp_atom.buf) {
|
|
|
677 *prev = &mp4->ftyp_atom;
|
|
|
678 prev = &mp4->ftyp_atom.next;
|
|
|
679 }
|
|
|
680
|
|
|
681 *prev = &mp4->moov_atom;
|
|
|
682 prev = &mp4->moov_atom.next;
|
|
|
683
|
|
|
684 if (mp4->mvhd_atom.buf) {
|
|
|
685 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
|
686 *prev = &mp4->mvhd_atom;
|
|
|
687 prev = &mp4->mvhd_atom.next;
|
|
|
688 }
|
|
|
689
|
|
|
690 start_offset = mp4->end;
|
|
|
691 trak = mp4->trak.elts;
|
|
|
692
|
|
|
693 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
|
694
|
|
|
695 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
696 return NGX_ERROR;
|
|
|
697 }
|
|
|
698
|
|
|
699 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
700 return NGX_ERROR;
|
|
|
701 }
|
|
|
702
|
|
|
703 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
|
704
|
|
|
705 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
706 return NGX_ERROR;
|
|
|
707 }
|
|
|
708
|
|
670
|
709 if (ngx_http_mp4_update_stsz_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
710 return NGX_ERROR;
|
|
|
711 }
|
|
638
|
712
|
|
640
|
713 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
714 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
715 return NGX_ERROR;
|
|
|
716 }
|
|
|
717
|
|
|
718 } else {
|
|
|
719 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
720 return NGX_ERROR;
|
|
|
721 }
|
|
638
|
722 }
|
|
|
723
|
|
|
724 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
|
725 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
|
726 trak[i].size += trak[i].mdhd_size;
|
|
|
727 trak[i].size += trak[i].hdlr_size;
|
|
|
728 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
|
729 trak[i].size += trak[i].tkhd_size;
|
|
|
730 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
|
731
|
|
|
732 mp4->moov_size += trak[i].size;
|
|
|
733
|
|
|
734 if (start_offset > trak[i].start_offset) {
|
|
|
735 start_offset = trak[i].start_offset;
|
|
|
736 }
|
|
|
737
|
|
|
738 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
|
739 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
|
740
|
|
|
741 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
|
742 if (trak[i].out[j].buf) {
|
|
|
743 *prev = &trak[i].out[j];
|
|
|
744 prev = &trak[i].out[j].next;
|
|
|
745 }
|
|
|
746 }
|
|
|
747 }
|
|
|
748
|
|
|
749 mp4->moov_size += 8;
|
|
|
750
|
|
|
751 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
|
752 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
|
753 mp4->content_length += mp4->moov_size;
|
|
|
754
|
|
|
755 *prev = &mp4->mdat_atom;
|
|
|
756
|
|
|
757 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
|
758 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
|
759 - start_offset;
|
|
|
760
|
|
|
761 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
670
|
762 "mp4 adjustment:%O", adjustment);
|
|
638
|
763
|
|
|
764 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
640
|
765 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
766 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
|
767 } else {
|
|
|
768 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
|
769 }
|
|
638
|
770 }
|
|
|
771
|
|
|
772 return NGX_OK;
|
|
|
773 }
|
|
|
774
|
|
|
775
|
|
|
776 typedef struct {
|
|
|
777 u_char size[4];
|
|
|
778 u_char name[4];
|
|
|
779 } ngx_mp4_atom_header_t;
|
|
|
780
|
|
|
781 typedef struct {
|
|
|
782 u_char size[4];
|
|
|
783 u_char name[4];
|
|
|
784 u_char size64[8];
|
|
|
785 } ngx_mp4_atom_header64_t;
|
|
|
786
|
|
|
787
|
|
|
788 static ngx_int_t
|
|
|
789 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
|
790 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
|
791 {
|
|
|
792 off_t end;
|
|
|
793 size_t atom_header_size;
|
|
|
794 u_char *atom_header, *atom_name;
|
|
|
795 uint64_t atom_size;
|
|
|
796 ngx_int_t rc;
|
|
|
797 ngx_uint_t n;
|
|
|
798
|
|
|
799 end = mp4->offset + atom_data_size;
|
|
|
800
|
|
|
801 while (mp4->offset < end) {
|
|
|
802
|
|
670
|
803 if (ngx_http_mp4_read(mp4, sizeof(uint32_t)) != NGX_OK) {
|
|
|
804 return NGX_ERROR;
|
|
638
|
805 }
|
|
|
806
|
|
|
807 atom_header = mp4->buffer_pos;
|
|
|
808 atom_size = ngx_mp4_get_32value(atom_header);
|
|
|
809 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
810
|
|
|
811 if (atom_size == 0) {
|
|
|
812 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
813 "mp4 atom end");
|
|
|
814 return NGX_OK;
|
|
|
815 }
|
|
|
816
|
|
|
817 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
|
818
|
|
|
819 if (atom_size == 1) {
|
|
|
820
|
|
670
|
821 if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header64_t))
|
|
|
822 != NGX_OK)
|
|
638
|
823 {
|
|
670
|
824 return NGX_ERROR;
|
|
638
|
825 }
|
|
|
826
|
|
|
827 /* 64-bit atom size */
|
|
670
|
828 atom_header = mp4->buffer_pos;
|
|
638
|
829 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
|
830 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
831
|
|
|
832 } else {
|
|
|
833 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
834 "\"%s\" mp4 atom is too small:%uL",
|
|
|
835 mp4->file.name.data, atom_size);
|
|
|
836 return NGX_ERROR;
|
|
|
837 }
|
|
|
838 }
|
|
|
839
|
|
670
|
840 if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header_t)) != NGX_OK) {
|
|
|
841 return NGX_ERROR;
|
|
638
|
842 }
|
|
|
843
|
|
670
|
844 atom_header = mp4->buffer_pos;
|
|
638
|
845 atom_name = atom_header + sizeof(uint32_t);
|
|
|
846
|
|
|
847 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
848 "mp4 atom: %*s @%O:%uL",
|
|
|
849 4, atom_name, mp4->offset, atom_size);
|
|
|
850
|
|
670
|
851 if (atom_size > (uint64_t) (NGX_MAX_OFF_T_VALUE - mp4->offset)
|
|
|
852 || mp4->offset + (off_t) atom_size > end)
|
|
|
853 {
|
|
|
854 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
855 "\"%s\" mp4 atom too large:%uL",
|
|
|
856 mp4->file.name.data, atom_size);
|
|
|
857 return NGX_ERROR;
|
|
|
858 }
|
|
|
859
|
|
638
|
860 for (n = 0; atom[n].name; n++) {
|
|
|
861
|
|
|
862 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
|
863
|
|
|
864 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
|
865
|
|
|
866 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
|
867 if (rc != NGX_OK) {
|
|
|
868 return rc;
|
|
|
869 }
|
|
|
870
|
|
|
871 goto next;
|
|
|
872 }
|
|
|
873 }
|
|
|
874
|
|
|
875 ngx_mp4_atom_next(mp4, atom_size);
|
|
|
876
|
|
|
877 next:
|
|
|
878 continue;
|
|
|
879 }
|
|
|
880
|
|
|
881 return NGX_OK;
|
|
|
882 }
|
|
|
883
|
|
|
884
|
|
|
885 static ngx_int_t
|
|
670
|
886 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size)
|
|
638
|
887 {
|
|
670
|
888 ssize_t n;
|
|
|
889
|
|
|
890 if (mp4->buffer_pos + size <= mp4->buffer_end) {
|
|
|
891 return NGX_OK;
|
|
|
892 }
|
|
638
|
893
|
|
|
894 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
|
895 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
|
896 }
|
|
|
897
|
|
670
|
898 if (mp4->buffer_size < size) {
|
|
|
899 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
900 "\"%s\" mp4 file truncated", mp4->file.name.data);
|
|
|
901 return NGX_ERROR;
|
|
|
902 }
|
|
|
903
|
|
638
|
904 if (mp4->buffer == NULL) {
|
|
|
905 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
|
906 if (mp4->buffer == NULL) {
|
|
|
907 return NGX_ERROR;
|
|
|
908 }
|
|
|
909
|
|
|
910 mp4->buffer_start = mp4->buffer;
|
|
|
911 }
|
|
|
912
|
|
|
913 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
|
914 mp4->offset);
|
|
|
915
|
|
|
916 if (n == NGX_ERROR) {
|
|
|
917 return NGX_ERROR;
|
|
|
918 }
|
|
|
919
|
|
670
|
920 if ((size_t) n != mp4->buffer_size) {
|
|
|
921 ngx_log_error(NGX_LOG_CRIT, mp4->file.log, 0,
|
|
|
922 ngx_read_file_n " read only %z of %z from \"%s\"",
|
|
|
923 n, mp4->buffer_size, mp4->file.name.data);
|
|
|
924 return NGX_ERROR;
|
|
638
|
925 }
|
|
|
926
|
|
|
927 mp4->buffer_pos = mp4->buffer_start;
|
|
670
|
928 mp4->buffer_end = mp4->buffer_start + mp4->buffer_size;
|
|
638
|
929
|
|
|
930 return NGX_OK;
|
|
|
931 }
|
|
|
932
|
|
|
933
|
|
|
934 static ngx_int_t
|
|
|
935 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
936 {
|
|
|
937 u_char *ftyp_atom;
|
|
|
938 size_t atom_size;
|
|
|
939 ngx_buf_t *atom;
|
|
|
940
|
|
|
941 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
|
942
|
|
670
|
943 if (atom_data_size > 1024
|
|
|
944 || ngx_mp4_atom_data(mp4) + atom_data_size > mp4->buffer_end)
|
|
|
945 {
|
|
638
|
946 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
947 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
|
948 mp4->file.name.data, atom_data_size);
|
|
|
949 return NGX_ERROR;
|
|
|
950 }
|
|
|
951
|
|
|
952 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
953
|
|
|
954 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
|
955 if (ftyp_atom == NULL) {
|
|
|
956 return NGX_ERROR;
|
|
|
957 }
|
|
|
958
|
|
|
959 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
|
960 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
|
961
|
|
|
962 /*
|
|
|
963 * only moov atom content is guaranteed to be in mp4->buffer
|
|
|
964 * during sending response, so ftyp atom content should be copied
|
|
|
965 */
|
|
|
966 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
|
967 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
|
968
|
|
|
969 atom = &mp4->ftyp_atom_buf;
|
|
|
970 atom->temporary = 1;
|
|
|
971 atom->pos = ftyp_atom;
|
|
|
972 atom->last = ftyp_atom + atom_size;
|
|
|
973
|
|
|
974 mp4->ftyp_atom.buf = atom;
|
|
|
975 mp4->ftyp_size = atom_size;
|
|
|
976 mp4->content_length = atom_size;
|
|
|
977
|
|
|
978 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
979
|
|
|
980 return NGX_OK;
|
|
|
981 }
|
|
|
982
|
|
|
983
|
|
|
984 /*
|
|
|
985 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
|
986 * will be set to this buffer part after moov atom processing.
|
|
|
987 */
|
|
|
988 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
|
989
|
|
|
990 static ngx_int_t
|
|
|
991 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
992 {
|
|
|
993 ngx_int_t rc;
|
|
|
994 ngx_uint_t no_mdat;
|
|
|
995 ngx_buf_t *atom;
|
|
|
996 ngx_http_mp4_conf_t *conf;
|
|
|
997
|
|
|
998 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
|
999
|
|
|
1000 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
|
1001
|
|
|
1002 if (no_mdat && mp4->start == 0) {
|
|
|
1003 /*
|
|
|
1004 * send original file if moov atom resides before
|
|
|
1005 * mdat atom and client requests integral file
|
|
|
1006 */
|
|
|
1007 return NGX_DECLINED;
|
|
|
1008 }
|
|
|
1009
|
|
|
1010 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
1011
|
|
|
1012 if (atom_data_size > mp4->buffer_size) {
|
|
|
1013
|
|
|
1014 if (atom_data_size > conf->max_buffer_size) {
|
|
|
1015 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1016 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
|
1017 "you may want to increase mp4_max_buffer_size",
|
|
|
1018 mp4->file.name.data, atom_data_size);
|
|
|
1019 return NGX_ERROR;
|
|
|
1020 }
|
|
|
1021
|
|
|
1022 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
|
1023 mp4->buffer = NULL;
|
|
|
1024 mp4->buffer_pos = NULL;
|
|
|
1025 mp4->buffer_end = NULL;
|
|
|
1026
|
|
|
1027 mp4->buffer_size = (size_t) atom_data_size
|
|
|
1028 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
|
1029 }
|
|
|
1030
|
|
678
|
1031 if (ngx_http_mp4_read(mp4, (size_t) atom_data_size) != NGX_OK) {
|
|
|
1032 return NGX_ERROR;
|
|
|
1033 }
|
|
|
1034
|
|
638
|
1035 mp4->trak.elts = &mp4->traks;
|
|
|
1036 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
|
1037 mp4->trak.nalloc = 2;
|
|
|
1038 mp4->trak.pool = mp4->request->pool;
|
|
|
1039
|
|
|
1040 atom = &mp4->moov_atom_buf;
|
|
|
1041 atom->temporary = 1;
|
|
|
1042 atom->pos = mp4->moov_atom_header;
|
|
|
1043 atom->last = mp4->moov_atom_header + 8;
|
|
|
1044
|
|
|
1045 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
|
1046
|
|
|
1047 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
|
1048
|
|
|
1049 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
|
1050
|
|
|
1051 if (no_mdat) {
|
|
|
1052 mp4->buffer_start = mp4->buffer_pos;
|
|
|
1053 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
|
1054
|
|
678
|
1055 if (mp4->buffer_start + mp4->buffer_size > mp4->buffer_end) {
|
|
|
1056 mp4->buffer = NULL;
|
|
|
1057 mp4->buffer_pos = NULL;
|
|
|
1058 mp4->buffer_end = NULL;
|
|
|
1059 }
|
|
|
1060
|
|
638
|
1061 } else {
|
|
|
1062 /* skip atoms after moov atom */
|
|
|
1063 mp4->offset = mp4->end;
|
|
|
1064 }
|
|
|
1065
|
|
|
1066 return rc;
|
|
|
1067 }
|
|
|
1068
|
|
|
1069
|
|
|
1070 static ngx_int_t
|
|
|
1071 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1072 {
|
|
|
1073 ngx_buf_t *data;
|
|
|
1074
|
|
|
1075 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
|
1076
|
|
|
1077 data = &mp4->mdat_data_buf;
|
|
|
1078 data->file = &mp4->file;
|
|
|
1079 data->in_file = 1;
|
|
|
1080 data->last_buf = 1;
|
|
|
1081 data->last_in_chain = 1;
|
|
|
1082 data->file_last = mp4->offset + atom_data_size;
|
|
|
1083
|
|
|
1084 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
|
1085 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
|
1086 mp4->mdat_data.buf = data;
|
|
|
1087
|
|
|
1088 if (mp4->trak.nelts) {
|
|
|
1089 /* skip atoms after mdat atom */
|
|
|
1090 mp4->offset = mp4->end;
|
|
|
1091
|
|
|
1092 } else {
|
|
|
1093 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1094 }
|
|
|
1095
|
|
|
1096 return NGX_OK;
|
|
|
1097 }
|
|
|
1098
|
|
|
1099
|
|
|
1100 static size_t
|
|
|
1101 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
|
1102 {
|
|
|
1103 off_t atom_data_size;
|
|
|
1104 u_char *atom_header;
|
|
|
1105 uint32_t atom_header_size;
|
|
|
1106 uint64_t atom_size;
|
|
|
1107 ngx_buf_t *atom;
|
|
|
1108
|
|
|
1109 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
|
1110 mp4->mdat_data.buf->file_pos = start_offset;
|
|
|
1111
|
|
|
1112 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1113 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
|
1114
|
|
|
1115 atom_header = mp4->mdat_atom_header;
|
|
|
1116
|
|
642
|
1117 if ((uint64_t) atom_data_size > 0xffffffff) {
|
|
638
|
1118 atom_size = 1;
|
|
|
1119 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
1120 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
|
1121 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
|
1122 } else {
|
|
|
1123 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
|
1124 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
1125 }
|
|
|
1126
|
|
648
|
1127 mp4->content_length += atom_header_size + atom_data_size;
|
|
|
1128
|
|
638
|
1129 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1130 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
|
1131
|
|
|
1132 atom = &mp4->mdat_atom_buf;
|
|
|
1133 atom->temporary = 1;
|
|
|
1134 atom->pos = atom_header;
|
|
|
1135 atom->last = atom_header + atom_header_size;
|
|
|
1136
|
|
|
1137 return atom_header_size;
|
|
|
1138 }
|
|
|
1139
|
|
|
1140
|
|
|
1141 typedef struct {
|
|
|
1142 u_char size[4];
|
|
|
1143 u_char name[4];
|
|
|
1144 u_char version[1];
|
|
|
1145 u_char flags[3];
|
|
|
1146 u_char creation_time[4];
|
|
|
1147 u_char modification_time[4];
|
|
|
1148 u_char timescale[4];
|
|
|
1149 u_char duration[4];
|
|
|
1150 u_char rate[4];
|
|
|
1151 u_char volume[2];
|
|
|
1152 u_char reserved[10];
|
|
|
1153 u_char matrix[36];
|
|
|
1154 u_char preview_time[4];
|
|
|
1155 u_char preview_duration[4];
|
|
|
1156 u_char poster_time[4];
|
|
|
1157 u_char selection_time[4];
|
|
|
1158 u_char selection_duration[4];
|
|
|
1159 u_char current_time[4];
|
|
|
1160 u_char next_track_id[4];
|
|
|
1161 } ngx_mp4_mvhd_atom_t;
|
|
|
1162
|
|
|
1163 typedef struct {
|
|
|
1164 u_char size[4];
|
|
|
1165 u_char name[4];
|
|
|
1166 u_char version[1];
|
|
|
1167 u_char flags[3];
|
|
|
1168 u_char creation_time[8];
|
|
|
1169 u_char modification_time[8];
|
|
|
1170 u_char timescale[4];
|
|
|
1171 u_char duration[8];
|
|
|
1172 u_char rate[4];
|
|
|
1173 u_char volume[2];
|
|
|
1174 u_char reserved[10];
|
|
|
1175 u_char matrix[36];
|
|
|
1176 u_char preview_time[4];
|
|
|
1177 u_char preview_duration[4];
|
|
|
1178 u_char poster_time[4];
|
|
|
1179 u_char selection_time[4];
|
|
|
1180 u_char selection_duration[4];
|
|
|
1181 u_char current_time[4];
|
|
|
1182 u_char next_track_id[4];
|
|
|
1183 } ngx_mp4_mvhd64_atom_t;
|
|
|
1184
|
|
|
1185
|
|
|
1186 static ngx_int_t
|
|
|
1187 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1188 {
|
|
|
1189 u_char *atom_header;
|
|
|
1190 size_t atom_size;
|
|
|
1191 uint32_t timescale;
|
|
|
1192 uint64_t duration;
|
|
|
1193 ngx_buf_t *atom;
|
|
|
1194 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
|
1195 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
|
1196
|
|
|
1197 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
|
1198
|
|
|
1199 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1200 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
|
1201 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
|
1202 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
|
1203
|
|
670
|
1204 if (ngx_mp4_atom_data_size(ngx_mp4_mvhd_atom_t) > atom_data_size) {
|
|
|
1205 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1206 "\"%s\" mp4 mvhd atom too small", mp4->file.name.data);
|
|
|
1207 return NGX_ERROR;
|
|
|
1208 }
|
|
|
1209
|
|
638
|
1210 if (mvhd_atom->version[0] == 0) {
|
|
|
1211 /* version 0: 32-bit duration */
|
|
|
1212 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
|
1213 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
|
1214
|
|
|
1215 } else {
|
|
|
1216 /* version 1: 64-bit duration */
|
|
670
|
1217
|
|
|
1218 if (ngx_mp4_atom_data_size(ngx_mp4_mvhd64_atom_t) > atom_data_size) {
|
|
|
1219 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1220 "\"%s\" mp4 mvhd atom too small",
|
|
|
1221 mp4->file.name.data);
|
|
|
1222 return NGX_ERROR;
|
|
|
1223 }
|
|
|
1224
|
|
638
|
1225 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
|
1226 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
|
1227 }
|
|
|
1228
|
|
|
1229 mp4->timescale = timescale;
|
|
|
1230
|
|
|
1231 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1232 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1233 timescale, duration, (double) duration / timescale);
|
|
|
1234
|
|
|
1235 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1236
|
|
|
1237 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1238 "mvhd new duration:%uL, time:%.3fs",
|
|
|
1239 duration, (double) duration / timescale);
|
|
|
1240
|
|
|
1241 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1242 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
|
1243
|
|
|
1244 if (mvhd_atom->version[0] == 0) {
|
|
|
1245 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
|
1246
|
|
|
1247 } else {
|
|
|
1248 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
|
1249 }
|
|
|
1250
|
|
|
1251 atom = &mp4->mvhd_atom_buf;
|
|
|
1252 atom->temporary = 1;
|
|
|
1253 atom->pos = atom_header;
|
|
|
1254 atom->last = atom_header + atom_size;
|
|
|
1255
|
|
|
1256 mp4->mvhd_atom.buf = atom;
|
|
|
1257
|
|
|
1258 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1259
|
|
|
1260 return NGX_OK;
|
|
|
1261 }
|
|
|
1262
|
|
|
1263
|
|
|
1264 static ngx_int_t
|
|
|
1265 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1266 {
|
|
|
1267 u_char *atom_header, *atom_end;
|
|
|
1268 off_t atom_file_end;
|
|
|
1269 ngx_int_t rc;
|
|
|
1270 ngx_buf_t *atom;
|
|
|
1271 ngx_http_mp4_trak_t *trak;
|
|
|
1272
|
|
|
1273 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
|
1274
|
|
|
1275 trak = ngx_array_push(&mp4->trak);
|
|
|
1276 if (trak == NULL) {
|
|
|
1277 return NGX_ERROR;
|
|
|
1278 }
|
|
|
1279
|
|
|
1280 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1281
|
|
|
1282 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1283 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
|
1284
|
|
|
1285 atom = &trak->trak_atom_buf;
|
|
|
1286 atom->temporary = 1;
|
|
|
1287 atom->pos = atom_header;
|
|
|
1288 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1289
|
|
|
1290 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
|
1291
|
|
|
1292 atom_end = mp4->buffer_pos + atom_data_size;
|
|
|
1293 atom_file_end = mp4->offset + atom_data_size;
|
|
|
1294
|
|
|
1295 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
|
1296
|
|
|
1297 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1298 "mp4 trak atom: %i", rc);
|
|
|
1299
|
|
|
1300 if (rc == NGX_DECLINED) {
|
|
|
1301 /* skip this trak */
|
|
|
1302 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1303 mp4->trak.nelts--;
|
|
|
1304 mp4->buffer_pos = atom_end;
|
|
|
1305 mp4->offset = atom_file_end;
|
|
|
1306 return NGX_OK;
|
|
|
1307 }
|
|
|
1308
|
|
|
1309 return rc;
|
|
|
1310 }
|
|
|
1311
|
|
|
1312
|
|
|
1313 static void
|
|
|
1314 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1315 ngx_http_mp4_trak_t *trak)
|
|
|
1316 {
|
|
|
1317 ngx_buf_t *atom;
|
|
|
1318
|
|
|
1319 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1320 atom = &trak->trak_atom_buf;
|
|
|
1321 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1322 }
|
|
|
1323
|
|
|
1324
|
|
|
1325 static ngx_int_t
|
|
|
1326 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1327 {
|
|
|
1328 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1329 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
|
1330 mp4->file.name.data);
|
|
|
1331
|
|
|
1332 return NGX_ERROR;
|
|
|
1333 }
|
|
|
1334
|
|
|
1335
|
|
|
1336 typedef struct {
|
|
|
1337 u_char size[4];
|
|
|
1338 u_char name[4];
|
|
|
1339 u_char version[1];
|
|
|
1340 u_char flags[3];
|
|
|
1341 u_char creation_time[4];
|
|
|
1342 u_char modification_time[4];
|
|
|
1343 u_char track_id[4];
|
|
|
1344 u_char reserved1[4];
|
|
|
1345 u_char duration[4];
|
|
|
1346 u_char reserved2[8];
|
|
|
1347 u_char layer[2];
|
|
|
1348 u_char group[2];
|
|
|
1349 u_char volume[2];
|
|
|
1350 u_char reverved3[2];
|
|
|
1351 u_char matrix[36];
|
|
|
1352 u_char width[4];
|
|
|
1353 u_char heigth[4];
|
|
|
1354 } ngx_mp4_tkhd_atom_t;
|
|
|
1355
|
|
|
1356 typedef struct {
|
|
|
1357 u_char size[4];
|
|
|
1358 u_char name[4];
|
|
|
1359 u_char version[1];
|
|
|
1360 u_char flags[3];
|
|
|
1361 u_char creation_time[8];
|
|
|
1362 u_char modification_time[8];
|
|
|
1363 u_char track_id[4];
|
|
|
1364 u_char reserved1[4];
|
|
|
1365 u_char duration[8];
|
|
|
1366 u_char reserved2[8];
|
|
|
1367 u_char layer[2];
|
|
|
1368 u_char group[2];
|
|
|
1369 u_char volume[2];
|
|
|
1370 u_char reverved3[2];
|
|
|
1371 u_char matrix[36];
|
|
|
1372 u_char width[4];
|
|
|
1373 u_char heigth[4];
|
|
|
1374 } ngx_mp4_tkhd64_atom_t;
|
|
|
1375
|
|
|
1376
|
|
|
1377 static ngx_int_t
|
|
|
1378 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1379 {
|
|
|
1380 u_char *atom_header;
|
|
|
1381 size_t atom_size;
|
|
|
1382 uint64_t duration;
|
|
|
1383 ngx_buf_t *atom;
|
|
|
1384 ngx_http_mp4_trak_t *trak;
|
|
|
1385 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
|
1386 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
|
1387
|
|
|
1388 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
|
1389
|
|
|
1390 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1391 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
|
1392 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
|
1393 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
|
1394
|
|
670
|
1395 if (ngx_mp4_atom_data_size(ngx_mp4_tkhd_atom_t) > atom_data_size) {
|
|
|
1396 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1397 "\"%s\" mp4 tkhd atom too small", mp4->file.name.data);
|
|
|
1398 return NGX_ERROR;
|
|
|
1399 }
|
|
|
1400
|
|
638
|
1401 if (tkhd_atom->version[0] == 0) {
|
|
|
1402 /* version 0: 32-bit duration */
|
|
|
1403 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
|
1404
|
|
|
1405 } else {
|
|
|
1406 /* version 1: 64-bit duration */
|
|
670
|
1407
|
|
|
1408 if (ngx_mp4_atom_data_size(ngx_mp4_tkhd64_atom_t) > atom_data_size) {
|
|
|
1409 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1410 "\"%s\" mp4 tkhd atom too small",
|
|
|
1411 mp4->file.name.data);
|
|
|
1412 return NGX_ERROR;
|
|
|
1413 }
|
|
|
1414
|
|
638
|
1415 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
|
1416 }
|
|
|
1417
|
|
|
1418 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1419 "tkhd duration:%uL, time:%.3fs",
|
|
|
1420 duration, (double) duration / mp4->timescale);
|
|
|
1421
|
|
|
1422 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
|
1423
|
|
|
1424 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1425 "tkhd new duration:%uL, time:%.3fs",
|
|
|
1426 duration, (double) duration / mp4->timescale);
|
|
|
1427
|
|
|
1428 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1429
|
|
|
1430 trak = ngx_mp4_last_trak(mp4);
|
|
|
1431 trak->tkhd_size = atom_size;
|
|
|
1432
|
|
|
1433 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
|
1434
|
|
|
1435 if (tkhd_atom->version[0] == 0) {
|
|
|
1436 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
|
1437
|
|
|
1438 } else {
|
|
|
1439 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
|
1440 }
|
|
|
1441
|
|
|
1442 atom = &trak->tkhd_atom_buf;
|
|
|
1443 atom->temporary = 1;
|
|
|
1444 atom->pos = atom_header;
|
|
|
1445 atom->last = atom_header + atom_size;
|
|
|
1446
|
|
|
1447 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
|
1448
|
|
|
1449 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1450
|
|
|
1451 return NGX_OK;
|
|
|
1452 }
|
|
|
1453
|
|
|
1454
|
|
|
1455 static ngx_int_t
|
|
|
1456 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1457 {
|
|
|
1458 u_char *atom_header;
|
|
|
1459 ngx_buf_t *atom;
|
|
|
1460 ngx_http_mp4_trak_t *trak;
|
|
|
1461
|
|
|
1462 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
|
1463
|
|
|
1464 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1465 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
|
1466
|
|
|
1467 trak = ngx_mp4_last_trak(mp4);
|
|
|
1468
|
|
|
1469 atom = &trak->mdia_atom_buf;
|
|
|
1470 atom->temporary = 1;
|
|
|
1471 atom->pos = atom_header;
|
|
|
1472 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1473
|
|
|
1474 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
|
1475
|
|
|
1476 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
|
1477 }
|
|
|
1478
|
|
|
1479
|
|
|
1480 static void
|
|
|
1481 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1482 ngx_http_mp4_trak_t *trak)
|
|
|
1483 {
|
|
|
1484 ngx_buf_t *atom;
|
|
|
1485
|
|
|
1486 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1487 atom = &trak->mdia_atom_buf;
|
|
|
1488 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1489 }
|
|
|
1490
|
|
|
1491
|
|
|
1492 typedef struct {
|
|
|
1493 u_char size[4];
|
|
|
1494 u_char name[4];
|
|
|
1495 u_char version[1];
|
|
|
1496 u_char flags[3];
|
|
|
1497 u_char creation_time[4];
|
|
|
1498 u_char modification_time[4];
|
|
|
1499 u_char timescale[4];
|
|
|
1500 u_char duration[4];
|
|
|
1501 u_char language[2];
|
|
|
1502 u_char quality[2];
|
|
|
1503 } ngx_mp4_mdhd_atom_t;
|
|
|
1504
|
|
|
1505 typedef struct {
|
|
|
1506 u_char size[4];
|
|
|
1507 u_char name[4];
|
|
|
1508 u_char version[1];
|
|
|
1509 u_char flags[3];
|
|
|
1510 u_char creation_time[8];
|
|
|
1511 u_char modification_time[8];
|
|
|
1512 u_char timescale[4];
|
|
|
1513 u_char duration[8];
|
|
|
1514 u_char language[2];
|
|
|
1515 u_char quality[2];
|
|
|
1516 } ngx_mp4_mdhd64_atom_t;
|
|
|
1517
|
|
|
1518
|
|
|
1519 static ngx_int_t
|
|
|
1520 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1521 {
|
|
|
1522 u_char *atom_header;
|
|
|
1523 size_t atom_size;
|
|
|
1524 uint32_t timescale;
|
|
|
1525 uint64_t duration;
|
|
|
1526 ngx_buf_t *atom;
|
|
|
1527 ngx_http_mp4_trak_t *trak;
|
|
|
1528 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
|
1529 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
|
1530
|
|
|
1531 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
|
1532
|
|
|
1533 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1534 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
|
1535 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
|
1536 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
|
1537
|
|
670
|
1538 if (ngx_mp4_atom_data_size(ngx_mp4_mdhd_atom_t) > atom_data_size) {
|
|
|
1539 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1540 "\"%s\" mp4 mdhd atom too small", mp4->file.name.data);
|
|
|
1541 return NGX_ERROR;
|
|
|
1542 }
|
|
|
1543
|
|
638
|
1544 if (mdhd_atom->version[0] == 0) {
|
|
|
1545 /* version 0: everything is 32-bit */
|
|
|
1546 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
|
1547 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
|
1548
|
|
|
1549 } else {
|
|
|
1550 /* version 1: 64-bit duration and 32-bit timescale */
|
|
670
|
1551
|
|
|
1552 if (ngx_mp4_atom_data_size(ngx_mp4_mdhd64_atom_t) > atom_data_size) {
|
|
|
1553 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1554 "\"%s\" mp4 mdhd atom too small",
|
|
|
1555 mp4->file.name.data);
|
|
|
1556 return NGX_ERROR;
|
|
|
1557 }
|
|
|
1558
|
|
638
|
1559 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
|
1560 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
|
1561 }
|
|
|
1562
|
|
|
1563 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1564 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1565 timescale, duration, (double) duration / timescale);
|
|
|
1566
|
|
|
1567 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1568
|
|
|
1569 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1570 "mdhd new duration:%uL, time:%.3fs",
|
|
|
1571 duration, (double) duration / timescale);
|
|
|
1572
|
|
|
1573 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1574
|
|
|
1575 trak = ngx_mp4_last_trak(mp4);
|
|
|
1576 trak->mdhd_size = atom_size;
|
|
|
1577 trak->timescale = timescale;
|
|
|
1578
|
|
|
1579 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
|
1580
|
|
|
1581 if (mdhd_atom->version[0] == 0) {
|
|
|
1582 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
|
1583
|
|
|
1584 } else {
|
|
|
1585 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
|
1586 }
|
|
|
1587
|
|
|
1588 atom = &trak->mdhd_atom_buf;
|
|
|
1589 atom->temporary = 1;
|
|
|
1590 atom->pos = atom_header;
|
|
|
1591 atom->last = atom_header + atom_size;
|
|
|
1592
|
|
|
1593 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
|
1594
|
|
|
1595 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1596
|
|
|
1597 return NGX_OK;
|
|
|
1598 }
|
|
|
1599
|
|
|
1600
|
|
|
1601 static ngx_int_t
|
|
|
1602 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1603 {
|
|
|
1604 u_char *atom_header;
|
|
|
1605 size_t atom_size;
|
|
|
1606 ngx_buf_t *atom;
|
|
|
1607 ngx_http_mp4_trak_t *trak;
|
|
|
1608
|
|
|
1609 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
|
1610
|
|
|
1611 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1612 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1613 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1614 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
|
1615
|
|
|
1616 trak = ngx_mp4_last_trak(mp4);
|
|
|
1617
|
|
|
1618 atom = &trak->hdlr_atom_buf;
|
|
|
1619 atom->temporary = 1;
|
|
|
1620 atom->pos = atom_header;
|
|
|
1621 atom->last = atom_header + atom_size;
|
|
|
1622
|
|
|
1623 trak->hdlr_size = atom_size;
|
|
|
1624 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
|
1625
|
|
|
1626 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1627
|
|
|
1628 return NGX_OK;
|
|
|
1629 }
|
|
|
1630
|
|
|
1631
|
|
|
1632 static ngx_int_t
|
|
|
1633 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1634 {
|
|
|
1635 u_char *atom_header;
|
|
|
1636 ngx_buf_t *atom;
|
|
|
1637 ngx_http_mp4_trak_t *trak;
|
|
|
1638
|
|
|
1639 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
|
1640
|
|
|
1641 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1642 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
|
1643
|
|
|
1644 trak = ngx_mp4_last_trak(mp4);
|
|
|
1645
|
|
|
1646 atom = &trak->minf_atom_buf;
|
|
|
1647 atom->temporary = 1;
|
|
|
1648 atom->pos = atom_header;
|
|
|
1649 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1650
|
|
|
1651 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
|
1652
|
|
|
1653 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
|
1654 }
|
|
|
1655
|
|
|
1656
|
|
|
1657 static void
|
|
|
1658 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1659 ngx_http_mp4_trak_t *trak)
|
|
|
1660 {
|
|
|
1661 ngx_buf_t *atom;
|
|
|
1662
|
|
|
1663 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
|
1664 + trak->vmhd_size
|
|
|
1665 + trak->smhd_size
|
|
|
1666 + trak->dinf_size;
|
|
|
1667 atom = &trak->minf_atom_buf;
|
|
|
1668 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1669 }
|
|
|
1670
|
|
|
1671
|
|
|
1672 static ngx_int_t
|
|
|
1673 ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1674 {
|
|
|
1675 u_char *atom_header;
|
|
|
1676 size_t atom_size;
|
|
|
1677 ngx_buf_t *atom;
|
|
|
1678 ngx_http_mp4_trak_t *trak;
|
|
|
1679
|
|
|
1680 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom");
|
|
|
1681
|
|
|
1682 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1683 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1684 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1685 ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd');
|
|
|
1686
|
|
|
1687 trak = ngx_mp4_last_trak(mp4);
|
|
|
1688
|
|
|
1689 atom = &trak->vmhd_atom_buf;
|
|
|
1690 atom->temporary = 1;
|
|
|
1691 atom->pos = atom_header;
|
|
|
1692 atom->last = atom_header + atom_size;
|
|
|
1693
|
|
|
1694 trak->vmhd_size += atom_size;
|
|
|
1695 trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom;
|
|
|
1696
|
|
|
1697 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1698
|
|
|
1699 return NGX_OK;
|
|
|
1700 }
|
|
|
1701
|
|
|
1702
|
|
|
1703 static ngx_int_t
|
|
|
1704 ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1705 {
|
|
|
1706 u_char *atom_header;
|
|
|
1707 size_t atom_size;
|
|
|
1708 ngx_buf_t *atom;
|
|
|
1709 ngx_http_mp4_trak_t *trak;
|
|
|
1710
|
|
|
1711 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
|
1712
|
|
|
1713 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1714 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1715 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1716 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
|
1717
|
|
|
1718 trak = ngx_mp4_last_trak(mp4);
|
|
|
1719
|
|
|
1720 atom = &trak->smhd_atom_buf;
|
|
|
1721 atom->temporary = 1;
|
|
|
1722 atom->pos = atom_header;
|
|
|
1723 atom->last = atom_header + atom_size;
|
|
|
1724
|
|
|
1725 trak->vmhd_size += atom_size;
|
|
|
1726 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
|
1727
|
|
|
1728 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1729
|
|
|
1730 return NGX_OK;
|
|
|
1731 }
|
|
|
1732
|
|
|
1733
|
|
|
1734 static ngx_int_t
|
|
|
1735 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1736 {
|
|
|
1737 u_char *atom_header;
|
|
|
1738 size_t atom_size;
|
|
|
1739 ngx_buf_t *atom;
|
|
|
1740 ngx_http_mp4_trak_t *trak;
|
|
|
1741
|
|
|
1742 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
|
1743
|
|
|
1744 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1745 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1746 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1747 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
|
1748
|
|
|
1749 trak = ngx_mp4_last_trak(mp4);
|
|
|
1750
|
|
|
1751 atom = &trak->dinf_atom_buf;
|
|
|
1752 atom->temporary = 1;
|
|
|
1753 atom->pos = atom_header;
|
|
|
1754 atom->last = atom_header + atom_size;
|
|
|
1755
|
|
|
1756 trak->dinf_size += atom_size;
|
|
|
1757 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
|
1758
|
|
|
1759 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1760
|
|
|
1761 return NGX_OK;
|
|
|
1762 }
|
|
|
1763
|
|
|
1764
|
|
|
1765 static ngx_int_t
|
|
|
1766 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1767 {
|
|
|
1768 u_char *atom_header;
|
|
|
1769 ngx_buf_t *atom;
|
|
|
1770 ngx_http_mp4_trak_t *trak;
|
|
|
1771
|
|
|
1772 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
|
1773
|
|
|
1774 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1775 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
|
1776
|
|
|
1777 trak = ngx_mp4_last_trak(mp4);
|
|
|
1778
|
|
|
1779 atom = &trak->stbl_atom_buf;
|
|
|
1780 atom->temporary = 1;
|
|
|
1781 atom->pos = atom_header;
|
|
|
1782 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1783
|
|
|
1784 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
|
1785
|
|
|
1786 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
|
1787 }
|
|
|
1788
|
|
|
1789
|
|
|
1790 static void
|
|
|
1791 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1792 ngx_http_mp4_trak_t *trak)
|
|
|
1793 {
|
|
|
1794 ngx_buf_t *atom;
|
|
|
1795
|
|
|
1796 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1797 atom = &trak->stbl_atom_buf;
|
|
|
1798 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1799 }
|
|
|
1800
|
|
|
1801
|
|
|
1802 typedef struct {
|
|
|
1803 u_char size[4];
|
|
|
1804 u_char name[4];
|
|
|
1805 u_char version[1];
|
|
|
1806 u_char flags[3];
|
|
|
1807 u_char entries[4];
|
|
|
1808
|
|
|
1809 u_char media_size[4];
|
|
|
1810 u_char media_name[4];
|
|
|
1811 } ngx_mp4_stsd_atom_t;
|
|
|
1812
|
|
|
1813
|
|
|
1814 static ngx_int_t
|
|
|
1815 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1816 {
|
|
|
1817 u_char *atom_header, *atom_table;
|
|
|
1818 size_t atom_size;
|
|
|
1819 ngx_buf_t *atom;
|
|
|
1820 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
|
1821 ngx_http_mp4_trak_t *trak;
|
|
|
1822
|
|
|
1823 /* sample description atom */
|
|
|
1824
|
|
|
1825 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
|
1826
|
|
|
1827 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1828 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
|
1829 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1830 atom_table = atom_header + atom_size;
|
|
|
1831 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
|
1832 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
|
1833
|
|
670
|
1834 if (ngx_mp4_atom_data_size(ngx_mp4_stsd_atom_t) > atom_data_size) {
|
|
638
|
1835 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
670
|
1836 "\"%s\" mp4 stsd atom too small", mp4->file.name.data);
|
|
638
|
1837 return NGX_ERROR;
|
|
|
1838 }
|
|
|
1839
|
|
|
1840 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1841 "stsd entries:%uD, media:%*s",
|
|
|
1842 ngx_mp4_get_32value(stsd_atom->entries),
|
|
|
1843 4, stsd_atom->media_name);
|
|
|
1844
|
|
|
1845 trak = ngx_mp4_last_trak(mp4);
|
|
|
1846
|
|
|
1847 atom = &trak->stsd_atom_buf;
|
|
|
1848 atom->temporary = 1;
|
|
|
1849 atom->pos = atom_header;
|
|
|
1850 atom->last = atom_table;
|
|
|
1851
|
|
|
1852 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
|
1853 trak->size += atom_size;
|
|
|
1854
|
|
|
1855 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1856
|
|
|
1857 return NGX_OK;
|
|
|
1858 }
|
|
|
1859
|
|
|
1860
|
|
|
1861 typedef struct {
|
|
|
1862 u_char size[4];
|
|
|
1863 u_char name[4];
|
|
|
1864 u_char version[1];
|
|
|
1865 u_char flags[3];
|
|
|
1866 u_char entries[4];
|
|
|
1867 } ngx_mp4_stts_atom_t;
|
|
|
1868
|
|
|
1869 typedef struct {
|
|
|
1870 u_char count[4];
|
|
|
1871 u_char duration[4];
|
|
|
1872 } ngx_mp4_stts_entry_t;
|
|
|
1873
|
|
|
1874
|
|
|
1875 static ngx_int_t
|
|
|
1876 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1877 {
|
|
|
1878 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1879 uint32_t entries;
|
|
|
1880 ngx_buf_t *atom, *data;
|
|
|
1881 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1882 ngx_http_mp4_trak_t *trak;
|
|
|
1883
|
|
|
1884 /* time-to-sample atom */
|
|
|
1885
|
|
|
1886 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
|
1887
|
|
|
1888 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1889 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
|
1890 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
|
1891
|
|
670
|
1892 if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t) > atom_data_size) {
|
|
|
1893 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1894 "\"%s\" mp4 stts atom too small", mp4->file.name.data);
|
|
|
1895 return NGX_ERROR;
|
|
|
1896 }
|
|
|
1897
|
|
638
|
1898 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
|
1899
|
|
|
1900 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1901 "mp4 time-to-sample entries:%uD", entries);
|
|
|
1902
|
|
670
|
1903 if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t)
|
|
|
1904 + entries * sizeof(ngx_mp4_stts_entry_t) > atom_data_size)
|
|
|
1905 {
|
|
|
1906 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1907 "\"%s\" mp4 stts atom too small", mp4->file.name.data);
|
|
|
1908 return NGX_ERROR;
|
|
|
1909 }
|
|
|
1910
|
|
638
|
1911 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
|
1912 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
|
1913
|
|
|
1914 trak = ngx_mp4_last_trak(mp4);
|
|
|
1915 trak->time_to_sample_entries = entries;
|
|
|
1916
|
|
|
1917 atom = &trak->stts_atom_buf;
|
|
|
1918 atom->temporary = 1;
|
|
|
1919 atom->pos = atom_header;
|
|
|
1920 atom->last = atom_table;
|
|
|
1921
|
|
|
1922 data = &trak->stts_data_buf;
|
|
|
1923 data->temporary = 1;
|
|
|
1924 data->pos = atom_table;
|
|
|
1925 data->last = atom_end;
|
|
|
1926
|
|
|
1927 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
|
1928 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
|
1929
|
|
|
1930 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1931
|
|
|
1932 return NGX_OK;
|
|
|
1933 }
|
|
|
1934
|
|
|
1935
|
|
|
1936 static ngx_int_t
|
|
|
1937 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1938 ngx_http_mp4_trak_t *trak)
|
|
|
1939 {
|
|
|
1940 size_t atom_size;
|
|
|
1941 uint32_t entries, count, duration;
|
|
|
1942 uint64_t start_time;
|
|
|
1943 ngx_buf_t *atom, *data;
|
|
|
1944 ngx_uint_t start_sample;
|
|
|
1945 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1946 ngx_mp4_stts_entry_t *entry, *end;
|
|
|
1947
|
|
|
1948 /*
|
|
|
1949 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
|
1950 * from mdia.mdhd atom which may reside after mdia.minf
|
|
|
1951 */
|
|
|
1952
|
|
|
1953 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1954 "mp4 stts atom update");
|
|
|
1955
|
|
|
1956 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
|
1957
|
|
|
1958 if (data == NULL) {
|
|
|
1959 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1960 "no mp4 stts atoms were found in \"%s\"",
|
|
|
1961 mp4->file.name.data);
|
|
|
1962 return NGX_ERROR;
|
|
|
1963 }
|
|
|
1964
|
|
|
1965 entries = trak->time_to_sample_entries;
|
|
644
|
1966 start_time = (uint64_t) mp4->start * trak->timescale / 1000;
|
|
638
|
1967
|
|
|
1968 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1969 "time-to-sample start_time:%uL", start_time);
|
|
|
1970
|
|
|
1971 start_sample = 0;
|
|
|
1972 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
|
1973 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
|
1974
|
|
|
1975 while (entry < end) {
|
|
|
1976 count = ngx_mp4_get_32value(entry->count);
|
|
|
1977 duration = ngx_mp4_get_32value(entry->duration);
|
|
|
1978
|
|
|
1979 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1980 "count:%uD, duration:%uD", count, duration);
|
|
|
1981
|
|
650
|
1982 if (start_time < (uint64_t) count * duration) {
|
|
638
|
1983 start_sample += (ngx_uint_t) (start_time / duration);
|
|
670
|
1984 count -= (uint32_t) (start_time / duration);
|
|
638
|
1985 ngx_mp4_set_32value(entry->count, count);
|
|
|
1986 goto found;
|
|
|
1987 }
|
|
|
1988
|
|
|
1989 start_sample += count;
|
|
|
1990 start_time -= count * duration;
|
|
|
1991 entries--;
|
|
|
1992 entry++;
|
|
|
1993 }
|
|
|
1994
|
|
|
1995 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1996 "start time is out mp4 stts samples in \"%s\"",
|
|
|
1997 mp4->file.name.data);
|
|
|
1998
|
|
|
1999 return NGX_ERROR;
|
|
|
2000
|
|
|
2001 found:
|
|
|
2002
|
|
|
2003 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2004 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
|
2005
|
|
|
2006 trak->start_sample = start_sample;
|
|
|
2007
|
|
|
2008 data->pos = (u_char *) entry;
|
|
|
2009 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
|
2010 trak->size += atom_size;
|
|
|
2011
|
|
|
2012 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
|
2013 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
|
2014 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
|
2015 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
|
2016
|
|
|
2017 return NGX_OK;
|
|
|
2018 }
|
|
|
2019
|
|
|
2020
|
|
|
2021 typedef struct {
|
|
|
2022 u_char size[4];
|
|
|
2023 u_char name[4];
|
|
|
2024 u_char version[1];
|
|
|
2025 u_char flags[3];
|
|
|
2026 u_char entries[4];
|
|
|
2027 } ngx_http_mp4_stss_atom_t;
|
|
|
2028
|
|
|
2029
|
|
|
2030 static ngx_int_t
|
|
|
2031 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2032 {
|
|
|
2033 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2034 uint32_t entries;
|
|
|
2035 ngx_buf_t *atom, *data;
|
|
|
2036 ngx_http_mp4_trak_t *trak;
|
|
|
2037 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2038
|
|
|
2039 /* sync samples atom */
|
|
|
2040
|
|
|
2041 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
|
2042
|
|
|
2043 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2044 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
|
2045 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
|
2046
|
|
670
|
2047 if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t) > atom_data_size) {
|
|
|
2048 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2049 "\"%s\" mp4 stss atom too small", mp4->file.name.data);
|
|
|
2050 return NGX_ERROR;
|
|
|
2051 }
|
|
|
2052
|
|
638
|
2053 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
|
2054
|
|
|
2055 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2056 "sync sample entries:%uD", entries);
|
|
|
2057
|
|
|
2058 trak = ngx_mp4_last_trak(mp4);
|
|
|
2059 trak->sync_samples_entries = entries;
|
|
|
2060
|
|
|
2061 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
|
2062
|
|
|
2063 atom = &trak->stss_atom_buf;
|
|
|
2064 atom->temporary = 1;
|
|
|
2065 atom->pos = atom_header;
|
|
|
2066 atom->last = atom_table;
|
|
|
2067
|
|
670
|
2068 if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t)
|
|
|
2069 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2070 {
|
|
638
|
2071 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
670
|
2072 "\"%s\" mp4 stss atom too small", mp4->file.name.data);
|
|
638
|
2073 return NGX_ERROR;
|
|
|
2074 }
|
|
|
2075
|
|
670
|
2076 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2077
|
|
638
|
2078 data = &trak->stss_data_buf;
|
|
|
2079 data->temporary = 1;
|
|
|
2080 data->pos = atom_table;
|
|
|
2081 data->last = atom_end;
|
|
|
2082
|
|
|
2083 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
|
2084 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
|
2085
|
|
|
2086 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2087
|
|
|
2088 return NGX_OK;
|
|
|
2089 }
|
|
|
2090
|
|
|
2091
|
|
|
2092 static ngx_int_t
|
|
|
2093 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2094 ngx_http_mp4_trak_t *trak)
|
|
|
2095 {
|
|
|
2096 size_t atom_size;
|
|
|
2097 uint32_t entries, sample, start_sample, *entry, *end;
|
|
|
2098 ngx_buf_t *atom, *data;
|
|
|
2099 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2100
|
|
|
2101 /*
|
|
|
2102 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
|
2103 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2104 * atom which may reside after mdia.minf
|
|
|
2105 */
|
|
|
2106
|
|
|
2107 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2108 "mp4 stss atom update");
|
|
|
2109
|
|
|
2110 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
|
2111
|
|
|
2112 if (data == NULL) {
|
|
|
2113 return NGX_OK;
|
|
|
2114 }
|
|
|
2115
|
|
|
2116 /* sync samples starts from 1 */
|
|
|
2117 start_sample = trak->start_sample + 1;
|
|
|
2118 entries = trak->sync_samples_entries;
|
|
|
2119
|
|
|
2120 entry = (uint32_t *) data->pos;
|
|
|
2121 end = (uint32_t *) data->last;
|
|
|
2122
|
|
|
2123 while (entry < end) {
|
|
|
2124 sample = ngx_mp4_get_32value(entry);
|
|
|
2125
|
|
|
2126 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2127 "start:%uD, sync:%uD", start_sample, sample);
|
|
|
2128
|
|
|
2129 if (sample >= start_sample) {
|
|
|
2130 goto found;
|
|
|
2131 }
|
|
|
2132
|
|
|
2133 entries--;
|
|
|
2134 entry++;
|
|
|
2135 }
|
|
|
2136
|
|
|
2137 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2138 "start sample is out of mp4 stss atom in \"%s\"",
|
|
|
2139 mp4->file.name.data);
|
|
|
2140
|
|
|
2141 return NGX_ERROR;
|
|
|
2142
|
|
|
2143 found:
|
|
|
2144
|
|
|
2145 data->pos = (u_char *) entry;
|
|
|
2146
|
|
|
2147 start_sample = trak->start_sample;
|
|
|
2148
|
|
|
2149 while (entry < end) {
|
|
|
2150 sample = ngx_mp4_get_32value(entry);
|
|
|
2151 sample -= start_sample;
|
|
|
2152 ngx_mp4_set_32value(entry, sample);
|
|
|
2153 entry++;
|
|
|
2154 }
|
|
|
2155
|
|
|
2156 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
|
2157 trak->size += atom_size;
|
|
|
2158
|
|
|
2159 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
|
2160 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
|
2161
|
|
|
2162 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
|
2163 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
|
2164
|
|
|
2165 return NGX_OK;
|
|
|
2166 }
|
|
|
2167
|
|
|
2168
|
|
|
2169 typedef struct {
|
|
|
2170 u_char size[4];
|
|
|
2171 u_char name[4];
|
|
|
2172 u_char version[1];
|
|
|
2173 u_char flags[3];
|
|
|
2174 u_char entries[4];
|
|
|
2175 } ngx_mp4_ctts_atom_t;
|
|
|
2176
|
|
|
2177 typedef struct {
|
|
|
2178 u_char count[4];
|
|
|
2179 u_char offset[4];
|
|
|
2180 } ngx_mp4_ctts_entry_t;
|
|
|
2181
|
|
|
2182
|
|
|
2183 static ngx_int_t
|
|
|
2184 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2185 {
|
|
|
2186 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2187 uint32_t entries;
|
|
|
2188 ngx_buf_t *atom, *data;
|
|
|
2189 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2190 ngx_http_mp4_trak_t *trak;
|
|
|
2191
|
|
|
2192 /* composition offsets atom */
|
|
|
2193
|
|
|
2194 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
|
2195
|
|
|
2196 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2197 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
|
2198 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
|
2199
|
|
670
|
2200 if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t) > atom_data_size) {
|
|
|
2201 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2202 "\"%s\" mp4 ctts atom too small", mp4->file.name.data);
|
|
|
2203 return NGX_ERROR;
|
|
|
2204 }
|
|
|
2205
|
|
638
|
2206 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
|
2207
|
|
|
2208 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2209 "composition offset entries:%uD", entries);
|
|
|
2210
|
|
|
2211 trak = ngx_mp4_last_trak(mp4);
|
|
|
2212 trak->composition_offset_entries = entries;
|
|
|
2213
|
|
|
2214 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
|
2215
|
|
|
2216 atom = &trak->ctts_atom_buf;
|
|
|
2217 atom->temporary = 1;
|
|
|
2218 atom->pos = atom_header;
|
|
|
2219 atom->last = atom_table;
|
|
|
2220
|
|
670
|
2221 if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t)
|
|
|
2222 + entries * sizeof(ngx_mp4_ctts_entry_t) > atom_data_size)
|
|
|
2223 {
|
|
638
|
2224 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
670
|
2225 "\"%s\" mp4 ctts atom too small", mp4->file.name.data);
|
|
638
|
2226 return NGX_ERROR;
|
|
|
2227 }
|
|
|
2228
|
|
670
|
2229 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
|
2230
|
|
638
|
2231 data = &trak->ctts_data_buf;
|
|
|
2232 data->temporary = 1;
|
|
|
2233 data->pos = atom_table;
|
|
|
2234 data->last = atom_end;
|
|
|
2235
|
|
|
2236 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
|
2237 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
|
2238
|
|
|
2239 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2240
|
|
|
2241 return NGX_OK;
|
|
|
2242 }
|
|
|
2243
|
|
|
2244
|
|
|
2245 static void
|
|
|
2246 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2247 ngx_http_mp4_trak_t *trak)
|
|
|
2248 {
|
|
|
2249 size_t atom_size;
|
|
|
2250 uint32_t entries, count, start_sample;
|
|
|
2251 ngx_buf_t *atom, *data;
|
|
|
2252 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2253 ngx_mp4_ctts_entry_t *entry, *end;
|
|
|
2254
|
|
|
2255 /*
|
|
|
2256 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
|
2257 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2258 * atom which may reside after mdia.minf
|
|
|
2259 */
|
|
|
2260
|
|
|
2261 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2262 "mp4 ctts atom update");
|
|
|
2263
|
|
|
2264 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
|
2265
|
|
|
2266 if (data == NULL) {
|
|
|
2267 return;
|
|
|
2268 }
|
|
|
2269
|
|
|
2270 /* sync samples starts from 1 */
|
|
|
2271 start_sample = trak->start_sample + 1;
|
|
|
2272 entries = trak->composition_offset_entries;
|
|
|
2273 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
|
2274 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
|
2275
|
|
|
2276 while (entry < end) {
|
|
|
2277 count = ngx_mp4_get_32value(entry->count);
|
|
|
2278
|
|
|
2279 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2280 "start:%uD, count:%uD, offset:%uD",
|
|
|
2281 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
|
2282
|
|
|
2283 if (start_sample <= count) {
|
|
|
2284 count -= (start_sample - 1);
|
|
|
2285 ngx_mp4_set_32value(entry->count, count);
|
|
|
2286 goto found;
|
|
|
2287 }
|
|
|
2288
|
|
|
2289 start_sample -= count;
|
|
|
2290 entries--;
|
|
|
2291 entry++;
|
|
|
2292 }
|
|
|
2293
|
|
|
2294 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
|
2295 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
|
2296
|
|
|
2297 return;
|
|
|
2298
|
|
|
2299 found:
|
|
|
2300
|
|
|
2301 data->pos = (u_char *) entry;
|
|
|
2302 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
|
2303 trak->size += atom_size;
|
|
|
2304
|
|
|
2305 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
|
2306 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
|
2307
|
|
|
2308 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
|
2309 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
|
2310
|
|
|
2311 return;
|
|
|
2312 }
|
|
|
2313
|
|
|
2314
|
|
|
2315 typedef struct {
|
|
|
2316 u_char size[4];
|
|
|
2317 u_char name[4];
|
|
|
2318 u_char version[1];
|
|
|
2319 u_char flags[3];
|
|
|
2320 u_char entries[4];
|
|
|
2321 } ngx_mp4_stsc_atom_t;
|
|
|
2322
|
|
|
2323
|
|
|
2324 static ngx_int_t
|
|
|
2325 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2326 {
|
|
|
2327 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2328 uint32_t entries;
|
|
|
2329 ngx_buf_t *atom, *data;
|
|
|
2330 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2331 ngx_http_mp4_trak_t *trak;
|
|
|
2332
|
|
|
2333 /* sample-to-chunk atom */
|
|
|
2334
|
|
|
2335 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
|
2336
|
|
|
2337 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2338 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
|
2339 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
|
2340
|
|
670
|
2341 if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t) > atom_data_size) {
|
|
|
2342 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2343 "\"%s\" mp4 stsc atom too small", mp4->file.name.data);
|
|
|
2344 return NGX_ERROR;
|
|
|
2345 }
|
|
|
2346
|
|
638
|
2347 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
|
2348
|
|
|
2349 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2350 "sample-to-chunk entries:%uD", entries);
|
|
|
2351
|
|
670
|
2352 if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t)
|
|
|
2353 + entries * sizeof(ngx_mp4_stsc_entry_t) > atom_data_size)
|
|
|
2354 {
|
|
|
2355 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2356 "\"%s\" mp4 stsc atom too small", mp4->file.name.data);
|
|
|
2357 return NGX_ERROR;
|
|
|
2358 }
|
|
|
2359
|
|
638
|
2360 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
|
2361 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2362
|
|
|
2363 trak = ngx_mp4_last_trak(mp4);
|
|
|
2364 trak->sample_to_chunk_entries = entries;
|
|
|
2365
|
|
|
2366 atom = &trak->stsc_atom_buf;
|
|
|
2367 atom->temporary = 1;
|
|
|
2368 atom->pos = atom_header;
|
|
|
2369 atom->last = atom_table;
|
|
|
2370
|
|
|
2371 data = &trak->stsc_data_buf;
|
|
|
2372 data->temporary = 1;
|
|
|
2373 data->pos = atom_table;
|
|
|
2374 data->last = atom_end;
|
|
|
2375
|
|
|
2376 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
|
2377 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
|
2378
|
|
|
2379 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2380
|
|
|
2381 return NGX_OK;
|
|
|
2382 }
|
|
|
2383
|
|
|
2384
|
|
|
2385 static ngx_int_t
|
|
|
2386 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2387 ngx_http_mp4_trak_t *trak)
|
|
|
2388 {
|
|
|
2389 size_t atom_size;
|
|
|
2390 uint32_t start_sample, entries, chunk, samples, id,
|
|
|
2391 next_chunk, n;
|
|
|
2392 ngx_buf_t *atom, *data, *buf;
|
|
|
2393 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2394 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
|
2395
|
|
|
2396 /*
|
|
|
2397 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
|
2398 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2399 * atom which may reside after mdia.minf
|
|
|
2400 */
|
|
|
2401
|
|
|
2402 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2403 "mp4 stsc atom update");
|
|
|
2404
|
|
|
2405 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
|
2406
|
|
|
2407 if (data == NULL) {
|
|
|
2408 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2409 "no mp4 stsc atoms were found in \"%s\"",
|
|
|
2410 mp4->file.name.data);
|
|
|
2411 return NGX_ERROR;
|
|
|
2412 }
|
|
|
2413
|
|
670
|
2414 if (trak->sample_to_chunk_entries == 0) {
|
|
|
2415 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2416 "zero number of entries in stsc atom in \"%s\"",
|
|
|
2417 mp4->file.name.data);
|
|
|
2418 return NGX_ERROR;
|
|
|
2419 }
|
|
|
2420
|
|
638
|
2421 start_sample = (uint32_t) trak->start_sample;
|
|
|
2422 entries = trak->sample_to_chunk_entries - 1;
|
|
|
2423
|
|
|
2424 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
|
2425 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
|
2426
|
|
|
2427 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2428 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2429 id = ngx_mp4_get_32value(entry->id);
|
|
|
2430 entry++;
|
|
|
2431
|
|
|
2432 while (entry < end) {
|
|
|
2433
|
|
|
2434 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2435
|
|
|
2436 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2437 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
|
2438 "samples:%uD, id:%uD",
|
|
|
2439 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
|
2440
|
|
|
2441 n = (next_chunk - chunk) * samples;
|
|
|
2442
|
|
|
2443 if (start_sample <= n) {
|
|
|
2444 goto found;
|
|
|
2445 }
|
|
|
2446
|
|
|
2447 start_sample -= n;
|
|
|
2448
|
|
|
2449 chunk = next_chunk;
|
|
|
2450 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2451 id = ngx_mp4_get_32value(entry->id);
|
|
|
2452 entries--;
|
|
|
2453 entry++;
|
|
|
2454 }
|
|
|
2455
|
|
|
2456 next_chunk = trak->chunks;
|
|
|
2457
|
|
|
2458 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2459 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
|
2460 start_sample, chunk, next_chunk - chunk, samples);
|
|
|
2461
|
|
|
2462 n = (next_chunk - chunk) * samples;
|
|
|
2463
|
|
|
2464 if (start_sample > n) {
|
|
|
2465 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2466 "start time is out mp4 stsc chunks in \"%s\"",
|
|
|
2467 mp4->file.name.data);
|
|
|
2468 return NGX_ERROR;
|
|
|
2469 }
|
|
|
2470
|
|
|
2471 found:
|
|
|
2472
|
|
|
2473 entries++;
|
|
|
2474 entry--;
|
|
|
2475
|
|
|
2476 if (samples == 0) {
|
|
|
2477 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2478 "zero number of samples in \"%s\"",
|
|
|
2479 mp4->file.name.data);
|
|
|
2480 return NGX_ERROR;
|
|
|
2481 }
|
|
|
2482
|
|
|
2483 trak->start_chunk = chunk - 1;
|
|
|
2484
|
|
|
2485 trak->start_chunk += start_sample / samples;
|
|
|
2486 trak->chunk_samples = start_sample % samples;
|
|
|
2487
|
|
|
2488 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2489 "start chunk:%ui, samples:%uD",
|
|
|
2490 trak->start_chunk, trak->chunk_samples);
|
|
|
2491
|
|
|
2492 data->pos = (u_char *) entry;
|
|
|
2493 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
|
2494
|
|
656
|
2495 ngx_mp4_set_32value(entry->chunk, 1);
|
|
|
2496
|
|
678
|
2497 if (trak->chunk_samples && next_chunk - trak->start_chunk == 2) {
|
|
|
2498
|
|
|
2499 /* last chunk in the entry */
|
|
|
2500
|
|
|
2501 ngx_mp4_set_32value(entry->samples, samples - trak->chunk_samples);
|
|
|
2502
|
|
|
2503 } else if (trak->chunk_samples) {
|
|
638
|
2504
|
|
|
2505 first = &trak->stsc_chunk_entry;
|
|
|
2506 ngx_mp4_set_32value(first->chunk, 1);
|
|
|
2507 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
|
2508 ngx_mp4_set_32value(first->id, id);
|
|
|
2509
|
|
|
2510 buf = &trak->stsc_chunk_buf;
|
|
|
2511 buf->temporary = 1;
|
|
|
2512 buf->pos = (u_char *) first;
|
|
|
2513 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2514
|
|
|
2515 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
|
2516
|
|
|
2517 ngx_mp4_set_32value(entry->chunk, 2);
|
|
|
2518
|
|
678
|
2519 entries++;
|
|
638
|
2520 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2521 }
|
|
|
2522
|
|
|
2523 while (++entry < end) {
|
|
|
2524 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2525 chunk -= trak->start_chunk;
|
|
|
2526 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
|
2527 }
|
|
|
2528
|
|
|
2529 trak->size += atom_size;
|
|
|
2530
|
|
|
2531 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
|
2532 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
|
2533
|
|
|
2534 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
|
2535 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
|
2536
|
|
|
2537 return NGX_OK;
|
|
|
2538 }
|
|
|
2539
|
|
|
2540
|
|
|
2541 typedef struct {
|
|
|
2542 u_char size[4];
|
|
|
2543 u_char name[4];
|
|
|
2544 u_char version[1];
|
|
|
2545 u_char flags[3];
|
|
|
2546 u_char uniform_size[4];
|
|
|
2547 u_char entries[4];
|
|
|
2548 } ngx_mp4_stsz_atom_t;
|
|
|
2549
|
|
|
2550
|
|
|
2551 static ngx_int_t
|
|
|
2552 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2553 {
|
|
|
2554 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2555 size_t atom_size;
|
|
|
2556 uint32_t entries, size;
|
|
|
2557 ngx_buf_t *atom, *data;
|
|
|
2558 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2559 ngx_http_mp4_trak_t *trak;
|
|
|
2560
|
|
|
2561 /* sample sizes atom */
|
|
|
2562
|
|
|
2563 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
|
2564
|
|
|
2565 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2566 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
|
2567 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
|
2568
|
|
670
|
2569 if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t) > atom_data_size) {
|
|
|
2570 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2571 "\"%s\" mp4 stsz atom too small", mp4->file.name.data);
|
|
|
2572 return NGX_ERROR;
|
|
|
2573 }
|
|
|
2574
|
|
638
|
2575 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
|
2576 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
|
2577
|
|
|
2578 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2579 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
|
2580
|
|
|
2581 trak = ngx_mp4_last_trak(mp4);
|
|
|
2582 trak->sample_sizes_entries = entries;
|
|
|
2583
|
|
|
2584 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
|
2585
|
|
|
2586 atom = &trak->stsz_atom_buf;
|
|
|
2587 atom->temporary = 1;
|
|
|
2588 atom->pos = atom_header;
|
|
|
2589 atom->last = atom_table;
|
|
|
2590
|
|
|
2591 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
|
2592
|
|
|
2593 if (size == 0) {
|
|
670
|
2594 if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t)
|
|
|
2595 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2596 {
|
|
638
|
2597 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
670
|
2598 "\"%s\" mp4 stsz atom too small",
|
|
638
|
2599 mp4->file.name.data);
|
|
|
2600 return NGX_ERROR;
|
|
|
2601 }
|
|
|
2602
|
|
670
|
2603 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2604
|
|
638
|
2605 data = &trak->stsz_data_buf;
|
|
|
2606 data->temporary = 1;
|
|
|
2607 data->pos = atom_table;
|
|
|
2608 data->last = atom_end;
|
|
|
2609
|
|
|
2610 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
|
2611
|
|
|
2612 } else {
|
|
|
2613 /* if size != 0 then all samples are the same size */
|
|
|
2614 /* TODO : chunk samples */
|
|
|
2615 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
2616 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
2617 trak->size += atom_size;
|
|
|
2618 }
|
|
|
2619
|
|
|
2620 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2621
|
|
|
2622 return NGX_OK;
|
|
|
2623 }
|
|
|
2624
|
|
|
2625
|
|
670
|
2626 static ngx_int_t
|
|
638
|
2627 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2628 ngx_http_mp4_trak_t *trak)
|
|
|
2629 {
|
|
|
2630 size_t atom_size;
|
|
|
2631 uint32_t *pos, *end;
|
|
|
2632 ngx_buf_t *atom, *data;
|
|
|
2633 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2634
|
|
|
2635 /*
|
|
|
2636 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
|
2637 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2638 * atom which may reside after mdia.minf
|
|
|
2639 */
|
|
|
2640
|
|
|
2641 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2642 "mp4 stsz atom update");
|
|
|
2643
|
|
|
2644 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
|
2645
|
|
|
2646 if (data) {
|
|
670
|
2647 if (trak->start_sample > trak->sample_sizes_entries) {
|
|
|
2648 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2649 "start time is out mp4 stsz samples in \"%s\"",
|
|
|
2650 mp4->file.name.data);
|
|
|
2651 return NGX_ERROR;
|
|
|
2652 }
|
|
|
2653
|
|
638
|
2654 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
|
2655 end = (uint32_t *) data->pos;
|
|
|
2656
|
|
|
2657 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
|
2658 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
|
2659 }
|
|
|
2660
|
|
|
2661 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
640
|
2662 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
|
638
|
2663
|
|
|
2664 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
|
2665 trak->size += atom_size;
|
|
|
2666
|
|
|
2667 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
|
2668 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
|
2669
|
|
|
2670 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
|
2671 ngx_mp4_set_32value(stsz_atom->entries,
|
|
|
2672 trak->sample_sizes_entries - trak->start_sample);
|
|
|
2673 }
|
|
670
|
2674
|
|
|
2675 return NGX_OK;
|
|
638
|
2676 }
|
|
|
2677
|
|
|
2678
|
|
|
2679 typedef struct {
|
|
|
2680 u_char size[4];
|
|
|
2681 u_char name[4];
|
|
|
2682 u_char version[1];
|
|
|
2683 u_char flags[3];
|
|
|
2684 u_char entries[4];
|
|
|
2685 } ngx_mp4_stco_atom_t;
|
|
|
2686
|
|
|
2687
|
|
|
2688 static ngx_int_t
|
|
|
2689 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2690 {
|
|
|
2691 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2692 uint32_t entries;
|
|
|
2693 ngx_buf_t *atom, *data;
|
|
|
2694 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2695 ngx_http_mp4_trak_t *trak;
|
|
|
2696
|
|
|
2697 /* chunk offsets atom */
|
|
|
2698
|
|
|
2699 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
|
2700
|
|
|
2701 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2702 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
|
2703 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
|
2704
|
|
670
|
2705 if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t) > atom_data_size) {
|
|
|
2706 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2707 "\"%s\" mp4 stco atom too small", mp4->file.name.data);
|
|
|
2708 return NGX_ERROR;
|
|
|
2709 }
|
|
|
2710
|
|
638
|
2711 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
|
2712
|
|
|
2713 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2714
|
|
670
|
2715 if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t)
|
|
|
2716 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2717 {
|
|
|
2718 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2719 "\"%s\" mp4 stco atom too small", mp4->file.name.data);
|
|
|
2720 return NGX_ERROR;
|
|
|
2721 }
|
|
|
2722
|
|
638
|
2723 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
|
2724 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2725
|
|
|
2726 trak = ngx_mp4_last_trak(mp4);
|
|
|
2727 trak->chunks = entries;
|
|
|
2728
|
|
640
|
2729 atom = &trak->stco_atom_buf;
|
|
638
|
2730 atom->temporary = 1;
|
|
|
2731 atom->pos = atom_header;
|
|
|
2732 atom->last = atom_table;
|
|
|
2733
|
|
640
|
2734 data = &trak->stco_data_buf;
|
|
638
|
2735 data->temporary = 1;
|
|
|
2736 data->pos = atom_table;
|
|
|
2737 data->last = atom_end;
|
|
|
2738
|
|
|
2739 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
|
2740 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
|
2741
|
|
|
2742 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2743
|
|
|
2744 return NGX_OK;
|
|
|
2745 }
|
|
|
2746
|
|
|
2747
|
|
|
2748 static ngx_int_t
|
|
|
2749 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2750 ngx_http_mp4_trak_t *trak)
|
|
|
2751 {
|
|
|
2752 size_t atom_size;
|
|
|
2753 ngx_buf_t *atom, *data;
|
|
|
2754 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2755
|
|
|
2756 /*
|
|
|
2757 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
|
2758 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2759 * atom which may reside after mdia.minf
|
|
|
2760 */
|
|
|
2761
|
|
|
2762 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2763 "mp4 stco atom update");
|
|
|
2764
|
|
|
2765 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2766
|
|
|
2767 if (data == NULL) {
|
|
|
2768 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2769 "no mp4 stco atoms were found in \"%s\"",
|
|
|
2770 mp4->file.name.data);
|
|
|
2771 return NGX_ERROR;
|
|
|
2772 }
|
|
|
2773
|
|
670
|
2774 if (trak->start_chunk > trak->chunks) {
|
|
|
2775 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2776 "start time is out mp4 stco chunks in \"%s\"",
|
|
|
2777 mp4->file.name.data);
|
|
|
2778 return NGX_ERROR;
|
|
|
2779 }
|
|
|
2780
|
|
638
|
2781 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
|
2782 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
|
2783 trak->size += atom_size;
|
|
|
2784
|
|
|
2785 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
|
2786 trak->start_offset += trak->chunk_samples_size;
|
|
|
2787 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
|
2788
|
|
|
2789 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2790 "start chunk offset:%uD", trak->start_offset);
|
|
|
2791
|
|
|
2792 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
|
2793 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
|
2794
|
|
|
2795 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
|
2796 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2797
|
|
|
2798 return NGX_OK;
|
|
|
2799 }
|
|
|
2800
|
|
|
2801
|
|
|
2802 static void
|
|
|
2803 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2804 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
|
2805 {
|
|
|
2806 uint32_t offset, *entry, *end;
|
|
|
2807 ngx_buf_t *data;
|
|
|
2808
|
|
|
2809 /*
|
|
|
2810 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
|
2811 * minimal start offset of all traks and new moov atom size
|
|
|
2812 */
|
|
|
2813
|
|
|
2814 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2815 "mp4 stco atom adjustment");
|
|
|
2816
|
|
|
2817 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2818 entry = (uint32_t *) data->pos;
|
|
|
2819 end = (uint32_t *) data->last;
|
|
|
2820
|
|
|
2821 while (entry < end) {
|
|
|
2822 offset = ngx_mp4_get_32value(entry);
|
|
|
2823 offset += adjustment;
|
|
|
2824 ngx_mp4_set_32value(entry, offset);
|
|
|
2825 entry++;
|
|
|
2826 }
|
|
|
2827 }
|
|
|
2828
|
|
|
2829
|
|
640
|
2830 typedef struct {
|
|
|
2831 u_char size[4];
|
|
|
2832 u_char name[4];
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|
|
2833 u_char version[1];
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|
|
2834 u_char flags[3];
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|
|
2835 u_char entries[4];
|
|
|
2836 } ngx_mp4_co64_atom_t;
|
|
|
2837
|
|
|
2838
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|
|
2839 static ngx_int_t
|
|
|
2840 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2841 {
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|
|
2842 u_char *atom_header, *atom_table, *atom_end;
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|
2843 uint32_t entries;
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|
|
2844 ngx_buf_t *atom, *data;
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|
2845 ngx_mp4_co64_atom_t *co64_atom;
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|
2846 ngx_http_mp4_trak_t *trak;
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|
2847
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|
2848 /* chunk offsets atom */
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|
2849
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|
|
2850 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
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|
|
2851
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|
2852 atom_header = ngx_mp4_atom_header(mp4);
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|
2853 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
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|
2854 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
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|
2855
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|
670
|
2856 if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t) > atom_data_size) {
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|
2857 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
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|
2858 "\"%s\" mp4 co64 atom too small", mp4->file.name.data);
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|
|
2859 return NGX_ERROR;
|
|
|
2860 }
|
|
|
2861
|
|
640
|
2862 entries = ngx_mp4_get_32value(co64_atom->entries);
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|
2863
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|
|
2864 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
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|
|
2865
|
|
670
|
2866 if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t)
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|
|
2867 + entries * sizeof(uint64_t) > atom_data_size)
|
|
|
2868 {
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|
2869 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
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|
|
2870 "\"%s\" mp4 co64 atom too small", mp4->file.name.data);
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|
2871 return NGX_ERROR;
|
|
|
2872 }
|
|
|
2873
|
|
640
|
2874 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
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|
|
2875 atom_end = atom_table + entries * sizeof(uint64_t);
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2876
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|
2877 trak = ngx_mp4_last_trak(mp4);
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|
|
2878 trak->chunks = entries;
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|
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2879
|
|
|
2880 atom = &trak->co64_atom_buf;
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|
|
2881 atom->temporary = 1;
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|
|
2882 atom->pos = atom_header;
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|
|
2883 atom->last = atom_table;
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|
|
2884
|
|
|
2885 data = &trak->co64_data_buf;
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|
|
2886 data->temporary = 1;
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|
|
2887 data->pos = atom_table;
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|
|
2888 data->last = atom_end;
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2889
|
|
|
2890 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
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|
|
2891 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
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|
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2892
|
|
|
2893 ngx_mp4_atom_next(mp4, atom_data_size);
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|
|
2894
|
|
|
2895 return NGX_OK;
|
|
|
2896 }
|
|
|
2897
|
|
|
2898
|
|
|
2899 static ngx_int_t
|
|
|
2900 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2901 ngx_http_mp4_trak_t *trak)
|
|
|
2902 {
|
|
|
2903 size_t atom_size;
|
|
|
2904 ngx_buf_t *atom, *data;
|
|
|
2905 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2906
|
|
|
2907 /*
|
|
|
2908 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
|
2909 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2910 * atom which may reside after mdia.minf
|
|
|
2911 */
|
|
|
2912
|
|
|
2913 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2914 "mp4 co64 atom update");
|
|
|
2915
|
|
|
2916 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2917
|
|
|
2918 if (data == NULL) {
|
|
|
2919 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2920 "no mp4 co64 atoms were found in \"%s\"",
|
|
|
2921 mp4->file.name.data);
|
|
|
2922 return NGX_ERROR;
|
|
|
2923 }
|
|
|
2924
|
|
670
|
2925 if (trak->start_chunk > trak->chunks) {
|
|
|
2926 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2927 "start time is out mp4 co64 chunks in \"%s\"",
|
|
|
2928 mp4->file.name.data);
|
|
|
2929 return NGX_ERROR;
|
|
|
2930 }
|
|
|
2931
|
|
640
|
2932 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
|
2933 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
|
2934 trak->size += atom_size;
|
|
|
2935
|
|
|
2936 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
|
2937 trak->start_offset += trak->chunk_samples_size;
|
|
|
2938 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
|
2939
|
|
|
2940 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2941 "start chunk offset:%uL", trak->start_offset);
|
|
|
2942
|
|
|
2943 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
|
2944 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
|
2945
|
|
|
2946 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
|
2947 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2948
|
|
|
2949 return NGX_OK;
|
|
|
2950 }
|
|
|
2951
|
|
|
2952
|
|
|
2953 static void
|
|
|
2954 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2955 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
|
2956 {
|
|
|
2957 uint64_t offset, *entry, *end;
|
|
|
2958 ngx_buf_t *data;
|
|
|
2959
|
|
|
2960 /*
|
|
|
2961 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
|
2962 * minimal start offset of all traks and new moov atom size
|
|
|
2963 */
|
|
|
2964
|
|
|
2965 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2966 "mp4 co64 atom adjustment");
|
|
|
2967
|
|
|
2968 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2969 entry = (uint64_t *) data->pos;
|
|
|
2970 end = (uint64_t *) data->last;
|
|
|
2971
|
|
|
2972 while (entry < end) {
|
|
|
2973 offset = ngx_mp4_get_64value(entry);
|
|
|
2974 offset += adjustment;
|
|
|
2975 ngx_mp4_set_64value(entry, offset);
|
|
|
2976 entry++;
|
|
|
2977 }
|
|
|
2978 }
|
|
|
2979
|
|
|
2980
|
|
638
|
2981 static char *
|
|
|
2982 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2983 {
|
|
|
2984 ngx_http_core_loc_conf_t *clcf;
|
|
|
2985
|
|
|
2986 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
2987 clcf->handler = ngx_http_mp4_handler;
|
|
|
2988
|
|
|
2989 return NGX_CONF_OK;
|
|
|
2990 }
|
|
|
2991
|
|
|
2992
|
|
|
2993 static void *
|
|
|
2994 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
|
2995 {
|
|
|
2996 ngx_http_mp4_conf_t *conf;
|
|
|
2997
|
|
|
2998 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
|
2999 if (conf == NULL) {
|
|
|
3000 return NULL;
|
|
|
3001 }
|
|
|
3002
|
|
|
3003 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
3004 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
3005
|
|
|
3006 return conf;
|
|
|
3007 }
|
|
|
3008
|
|
|
3009
|
|
|
3010 static char *
|
|
|
3011 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
3012 {
|
|
|
3013 ngx_http_mp4_conf_t *prev = parent;
|
|
|
3014 ngx_http_mp4_conf_t *conf = child;
|
|
|
3015
|
|
|
3016 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
|
3017 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
|
3018 10 * 1024 * 1024);
|
|
|
3019
|
|
|
3020 return NGX_CONF_OK;
|
|
|
3021 }
|
