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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
|
|
|
589 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
|
590 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
591 }
|
|
|
592
|
|
|
593 if (mp4 == NULL) {
|
|
|
594 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
595 if (b == NULL) {
|
|
|
596 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
597 }
|
|
|
598
|
|
|
599 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
600 if (b->file == NULL) {
|
|
|
601 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
602 }
|
|
|
603 }
|
|
|
604
|
|
|
605 rc = ngx_http_send_header(r);
|
|
|
606
|
|
|
607 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
608 return rc;
|
|
|
609 }
|
|
|
610
|
|
|
611 if (mp4) {
|
|
|
612 return ngx_http_output_filter(r, mp4->out);
|
|
|
613 }
|
|
|
614
|
|
|
615 b->file_pos = 0;
|
|
|
616 b->file_last = of.size;
|
|
|
617
|
|
|
618 b->in_file = b->file_last ? 1 : 0;
|
|
674
|
619 b->last_buf = (r == r->main) ? 1 : 0;
|
|
638
|
620 b->last_in_chain = 1;
|
|
|
621
|
|
|
622 b->file->fd = of.fd;
|
|
|
623 b->file->name = path;
|
|
|
624 b->file->log = log;
|
|
|
625 b->file->directio = of.is_directio;
|
|
|
626
|
|
|
627 out.buf = b;
|
|
|
628 out.next = NULL;
|
|
|
629
|
|
|
630 return ngx_http_output_filter(r, &out);
|
|
|
631 }
|
|
|
632
|
|
|
633
|
|
|
634 static ngx_int_t
|
|
|
635 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
|
636 {
|
|
|
637 off_t start_offset, adjustment;
|
|
|
638 ngx_int_t rc;
|
|
|
639 ngx_uint_t i, j;
|
|
|
640 ngx_chain_t **prev;
|
|
|
641 ngx_http_mp4_trak_t *trak;
|
|
|
642 ngx_http_mp4_conf_t *conf;
|
|
|
643
|
|
|
644 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
645 "mp4 start:%ui", mp4->start);
|
|
|
646
|
|
|
647 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
648
|
|
|
649 mp4->buffer_size = conf->buffer_size;
|
|
|
650
|
|
|
651 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
|
652 if (rc != NGX_OK) {
|
|
|
653 return rc;
|
|
|
654 }
|
|
|
655
|
|
|
656 if (mp4->trak.nelts == 0) {
|
|
|
657 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
658 "no mp4 trak atoms were found in \"%s\"",
|
|
|
659 mp4->file.name.data);
|
|
|
660 return NGX_ERROR;
|
|
|
661 }
|
|
|
662
|
|
|
663 if (mp4->mdat_atom.buf == NULL) {
|
|
|
664 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
665 "no mp4 mdat atom was found in \"%s\"",
|
|
|
666 mp4->file.name.data);
|
|
|
667 return NGX_ERROR;
|
|
|
668 }
|
|
|
669
|
|
|
670 prev = &mp4->out;
|
|
|
671
|
|
|
672 if (mp4->ftyp_atom.buf) {
|
|
|
673 *prev = &mp4->ftyp_atom;
|
|
|
674 prev = &mp4->ftyp_atom.next;
|
|
|
675 }
|
|
|
676
|
|
|
677 *prev = &mp4->moov_atom;
|
|
|
678 prev = &mp4->moov_atom.next;
|
|
|
679
|
|
|
680 if (mp4->mvhd_atom.buf) {
|
|
|
681 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
|
682 *prev = &mp4->mvhd_atom;
|
|
|
683 prev = &mp4->mvhd_atom.next;
|
|
|
684 }
|
|
|
685
|
|
|
686 start_offset = mp4->end;
|
|
|
687 trak = mp4->trak.elts;
|
|
|
688
|
|
|
689 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
|
690
|
|
|
691 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
692 return NGX_ERROR;
|
|
|
693 }
|
|
|
694
|
|
|
695 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
696 return NGX_ERROR;
|
|
|
697 }
|
|
|
698
|
|
|
699 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
|
700
|
|
|
701 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
702 return NGX_ERROR;
|
|
|
703 }
|
|
|
704
|
|
670
|
705 if (ngx_http_mp4_update_stsz_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
706 return NGX_ERROR;
|
|
|
707 }
|
|
638
|
708
|
|
640
|
709 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
710 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
711 return NGX_ERROR;
|
|
|
712 }
|
|
|
713
|
|
|
714 } else {
|
|
|
715 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
716 return NGX_ERROR;
|
|
|
717 }
|
|
638
|
718 }
|
|
|
719
|
|
|
720 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
|
721 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
|
722 trak[i].size += trak[i].mdhd_size;
|
|
|
723 trak[i].size += trak[i].hdlr_size;
|
|
|
724 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
|
725 trak[i].size += trak[i].tkhd_size;
|
|
|
726 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
|
727
|
|
|
728 mp4->moov_size += trak[i].size;
|
|
|
729
|
|
|
730 if (start_offset > trak[i].start_offset) {
|
|
|
731 start_offset = trak[i].start_offset;
|
|
|
732 }
|
|
|
733
|
|
|
734 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
|
735 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
|
736
|
|
|
737 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
|
738 if (trak[i].out[j].buf) {
|
|
|
739 *prev = &trak[i].out[j];
|
|
|
740 prev = &trak[i].out[j].next;
|
|
|
741 }
|
|
|
742 }
|
|
|
743 }
|
|
|
744
|
|
|
745 mp4->moov_size += 8;
|
|
|
746
|
|
|
747 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
|
748 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
|
749 mp4->content_length += mp4->moov_size;
|
|
|
750
|
|
|
751 *prev = &mp4->mdat_atom;
|
|
|
752
|
|
|
753 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
|
754 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
|
755 - start_offset;
|
|
|
756
|
|
|
757 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
670
|
758 "mp4 adjustment:%O", adjustment);
|
|
638
|
759
|
|
|
760 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
640
|
761 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
762 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
|
763 } else {
|
|
|
764 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
|
765 }
|
|
638
|
766 }
|
|
|
767
|
|
|
768 return NGX_OK;
|
|
|
769 }
|
|
|
770
|
|
|
771
|
|
|
772 typedef struct {
|
|
|
773 u_char size[4];
|
|
|
774 u_char name[4];
|
|
|
775 } ngx_mp4_atom_header_t;
|
|
|
776
|
|
|
777 typedef struct {
|
|
|
778 u_char size[4];
|
|
|
779 u_char name[4];
|
|
|
780 u_char size64[8];
|
|
|
781 } ngx_mp4_atom_header64_t;
|
|
|
782
|
|
|
783
|
|
|
784 static ngx_int_t
|
|
|
785 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
|
786 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
|
787 {
|
|
|
788 off_t end;
|
|
|
789 size_t atom_header_size;
|
|
|
790 u_char *atom_header, *atom_name;
|
|
|
791 uint64_t atom_size;
|
|
|
792 ngx_int_t rc;
|
|
|
793 ngx_uint_t n;
|
|
|
794
|
|
|
795 end = mp4->offset + atom_data_size;
|
|
|
796
|
|
|
797 while (mp4->offset < end) {
|
|
|
798
|
|
670
|
799 if (ngx_http_mp4_read(mp4, sizeof(uint32_t)) != NGX_OK) {
|
|
|
800 return NGX_ERROR;
|
|
638
|
801 }
|
|
|
802
|
|
|
803 atom_header = mp4->buffer_pos;
|
|
|
804 atom_size = ngx_mp4_get_32value(atom_header);
|
|
|
805 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
806
|
|
|
807 if (atom_size == 0) {
|
|
|
808 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
809 "mp4 atom end");
|
|
|
810 return NGX_OK;
|
|
|
811 }
|
|
|
812
|
|
|
813 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
|
814
|
|
|
815 if (atom_size == 1) {
|
|
|
816
|
|
670
|
817 if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header64_t))
|
|
|
818 != NGX_OK)
|
|
638
|
819 {
|
|
670
|
820 return NGX_ERROR;
|
|
638
|
821 }
|
|
|
822
|
|
|
823 /* 64-bit atom size */
|
|
670
|
824 atom_header = mp4->buffer_pos;
|
|
638
|
825 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
|
826 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
827
|
|
|
828 } else {
|
|
|
829 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
830 "\"%s\" mp4 atom is too small:%uL",
|
|
|
831 mp4->file.name.data, atom_size);
|
|
|
832 return NGX_ERROR;
|
|
|
833 }
|
|
|
834 }
|
|
|
835
|
|
670
|
836 if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header_t)) != NGX_OK) {
|
|
|
837 return NGX_ERROR;
|
|
638
|
838 }
|
|
|
839
|
|
670
|
840 atom_header = mp4->buffer_pos;
|
|
638
|
841 atom_name = atom_header + sizeof(uint32_t);
|
|
|
842
|
|
|
843 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
844 "mp4 atom: %*s @%O:%uL",
|
|
|
845 4, atom_name, mp4->offset, atom_size);
|
|
|
846
|
|
670
|
847 if (atom_size > (uint64_t) (NGX_MAX_OFF_T_VALUE - mp4->offset)
|
|
|
848 || mp4->offset + (off_t) atom_size > end)
|
|
|
849 {
|
|
|
850 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
851 "\"%s\" mp4 atom too large:%uL",
|
|
|
852 mp4->file.name.data, atom_size);
|
|
|
853 return NGX_ERROR;
|
|
|
854 }
|
|
|
855
|
|
638
|
856 for (n = 0; atom[n].name; n++) {
|
|
|
857
|
|
|
858 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
|
859
|
|
|
860 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
|
861
|
|
|
862 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
|
863 if (rc != NGX_OK) {
|
|
|
864 return rc;
|
|
|
865 }
|
|
|
866
|
|
|
867 goto next;
|
|
|
868 }
|
|
|
869 }
|
|
|
870
|
|
|
871 ngx_mp4_atom_next(mp4, atom_size);
|
|
|
872
|
|
|
873 next:
|
|
|
874 continue;
|
|
|
875 }
|
|
|
876
|
|
|
877 return NGX_OK;
|
|
|
878 }
|
|
|
879
|
|
|
880
|
|
|
881 static ngx_int_t
|
|
670
|
882 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size)
|
|
638
|
883 {
|
|
670
|
884 ssize_t n;
|
|
|
885
|
|
|
886 if (mp4->buffer_pos + size <= mp4->buffer_end) {
|
|
|
887 return NGX_OK;
|
|
|
888 }
|
|
638
|
889
|
|
|
890 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
|
891 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
|
892 }
|
|
|
893
|
|
670
|
894 if (mp4->buffer_size < size) {
|
|
|
895 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
896 "\"%s\" mp4 file truncated", mp4->file.name.data);
|
|
|
897 return NGX_ERROR;
|
|
|
898 }
|
|
|
899
|
|
638
|
900 if (mp4->buffer == NULL) {
|
|
|
901 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
|
902 if (mp4->buffer == NULL) {
|
|
|
903 return NGX_ERROR;
|
|
|
904 }
|
|
|
905
|
|
|
906 mp4->buffer_start = mp4->buffer;
|
|
|
907 }
|
|
|
908
|
|
|
909 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
|
910 mp4->offset);
|
|
|
911
|
|
|
912 if (n == NGX_ERROR) {
|
|
|
913 return NGX_ERROR;
|
|
|
914 }
|
|
|
915
|
|
670
|
916 if ((size_t) n != mp4->buffer_size) {
|
|
|
917 ngx_log_error(NGX_LOG_CRIT, mp4->file.log, 0,
|
|
|
918 ngx_read_file_n " read only %z of %z from \"%s\"",
|
|
|
919 n, mp4->buffer_size, mp4->file.name.data);
|
|
|
920 return NGX_ERROR;
|
|
638
|
921 }
|
|
|
922
|
|
|
923 mp4->buffer_pos = mp4->buffer_start;
|
|
670
|
924 mp4->buffer_end = mp4->buffer_start + mp4->buffer_size;
|
|
638
|
925
|
|
|
926 return NGX_OK;
|
|
|
927 }
|
|
|
928
|
|
|
929
|
|
|
930 static ngx_int_t
|
|
|
931 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
932 {
|
|
|
933 u_char *ftyp_atom;
|
|
|
934 size_t atom_size;
|
|
|
935 ngx_buf_t *atom;
|
|
|
936
|
|
|
937 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
|
938
|
|
670
|
939 if (atom_data_size > 1024
|
|
|
940 || ngx_mp4_atom_data(mp4) + atom_data_size > mp4->buffer_end)
|
|
|
941 {
|
|
638
|
942 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
943 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
|
944 mp4->file.name.data, atom_data_size);
|
|
|
945 return NGX_ERROR;
|
|
|
946 }
|
|
|
947
|
|
|
948 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
949
|
|
|
950 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
|
951 if (ftyp_atom == NULL) {
|
|
|
952 return NGX_ERROR;
|
|
|
953 }
|
|
|
954
|
|
|
955 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
|
956 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
|
957
|
|
|
958 /*
|
|
|
959 * only moov atom content is guaranteed to be in mp4->buffer
|
|
|
960 * during sending response, so ftyp atom content should be copied
|
|
|
961 */
|
|
|
962 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
|
963 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
|
964
|
|
|
965 atom = &mp4->ftyp_atom_buf;
|
|
|
966 atom->temporary = 1;
|
|
|
967 atom->pos = ftyp_atom;
|
|
|
968 atom->last = ftyp_atom + atom_size;
|
|
|
969
|
|
|
970 mp4->ftyp_atom.buf = atom;
|
|
|
971 mp4->ftyp_size = atom_size;
|
|
|
972 mp4->content_length = atom_size;
|
|
|
973
|
|
|
974 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
975
|
|
|
976 return NGX_OK;
|
|
|
977 }
|
|
|
978
|
|
|
979
|
|
|
980 /*
|
|
|
981 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
|
982 * will be set to this buffer part after moov atom processing.
|
|
|
983 */
|
|
|
984 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
|
985
|
|
|
986 static ngx_int_t
|
|
|
987 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
988 {
|
|
|
989 ngx_int_t rc;
|
|
|
990 ngx_uint_t no_mdat;
|
|
|
991 ngx_buf_t *atom;
|
|
|
992 ngx_http_mp4_conf_t *conf;
|
|
|
993
|
|
|
994 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
|
995
|
|
|
996 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
|
997
|
|
|
998 if (no_mdat && mp4->start == 0) {
|
|
|
999 /*
|
|
|
1000 * send original file if moov atom resides before
|
|
|
1001 * mdat atom and client requests integral file
|
|
|
1002 */
|
|
|
1003 return NGX_DECLINED;
|
|
|
1004 }
|
|
|
1005
|
|
|
1006 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
1007
|
|
|
1008 if (atom_data_size > mp4->buffer_size) {
|
|
|
1009
|
|
|
1010 if (atom_data_size > conf->max_buffer_size) {
|
|
|
1011 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1012 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
|
1013 "you may want to increase mp4_max_buffer_size",
|
|
|
1014 mp4->file.name.data, atom_data_size);
|
|
|
1015 return NGX_ERROR;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
|
1019 mp4->buffer = NULL;
|
|
|
1020 mp4->buffer_pos = NULL;
|
|
|
1021 mp4->buffer_end = NULL;
|
|
|
1022
|
|
|
1023 mp4->buffer_size = (size_t) atom_data_size
|
|
|
1024 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
|
1025 }
|
|
|
1026
|
|
678
|
1027 if (ngx_http_mp4_read(mp4, (size_t) atom_data_size) != NGX_OK) {
|
|
|
1028 return NGX_ERROR;
|
|
|
1029 }
|
|
|
1030
|
|
638
|
1031 mp4->trak.elts = &mp4->traks;
|
|
|
1032 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
|
1033 mp4->trak.nalloc = 2;
|
|
|
1034 mp4->trak.pool = mp4->request->pool;
|
|
|
1035
|
|
|
1036 atom = &mp4->moov_atom_buf;
|
|
|
1037 atom->temporary = 1;
|
|
|
1038 atom->pos = mp4->moov_atom_header;
|
|
|
1039 atom->last = mp4->moov_atom_header + 8;
|
|
|
1040
|
|
|
1041 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
|
1042
|
|
|
1043 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
|
1044
|
|
|
1045 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
|
1046
|
|
|
1047 if (no_mdat) {
|
|
|
1048 mp4->buffer_start = mp4->buffer_pos;
|
|
|
1049 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
|
1050
|
|
678
|
1051 if (mp4->buffer_start + mp4->buffer_size > mp4->buffer_end) {
|
|
|
1052 mp4->buffer = NULL;
|
|
|
1053 mp4->buffer_pos = NULL;
|
|
|
1054 mp4->buffer_end = NULL;
|
|
|
1055 }
|
|
|
1056
|
|
638
|
1057 } else {
|
|
|
1058 /* skip atoms after moov atom */
|
|
|
1059 mp4->offset = mp4->end;
|
|
|
1060 }
|
|
|
1061
|
|
|
1062 return rc;
|
|
|
1063 }
|
|
|
1064
|
|
|
1065
|
|
|
1066 static ngx_int_t
|
|
|
1067 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1068 {
|
|
|
1069 ngx_buf_t *data;
|
|
|
1070
|
|
|
1071 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
|
1072
|
|
|
1073 data = &mp4->mdat_data_buf;
|
|
|
1074 data->file = &mp4->file;
|
|
|
1075 data->in_file = 1;
|
|
|
1076 data->last_buf = 1;
|
|
|
1077 data->last_in_chain = 1;
|
|
|
1078 data->file_last = mp4->offset + atom_data_size;
|
|
|
1079
|
|
|
1080 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
|
1081 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
|
1082 mp4->mdat_data.buf = data;
|
|
|
1083
|
|
|
1084 if (mp4->trak.nelts) {
|
|
|
1085 /* skip atoms after mdat atom */
|
|
|
1086 mp4->offset = mp4->end;
|
|
|
1087
|
|
|
1088 } else {
|
|
|
1089 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1090 }
|
|
|
1091
|
|
|
1092 return NGX_OK;
|
|
|
1093 }
|
|
|
1094
|
|
|
1095
|
|
|
1096 static size_t
|
|
|
1097 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
|
1098 {
|
|
|
1099 off_t atom_data_size;
|
|
|
1100 u_char *atom_header;
|
|
|
1101 uint32_t atom_header_size;
|
|
|
1102 uint64_t atom_size;
|
|
|
1103 ngx_buf_t *atom;
|
|
|
1104
|
|
|
1105 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
|
1106 mp4->mdat_data.buf->file_pos = start_offset;
|
|
|
1107
|
|
|
1108 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1109 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
|
1110
|
|
|
1111 atom_header = mp4->mdat_atom_header;
|
|
|
1112
|
|
642
|
1113 if ((uint64_t) atom_data_size > 0xffffffff) {
|
|
638
|
1114 atom_size = 1;
|
|
|
1115 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
1116 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
|
1117 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
|
1118 } else {
|
|
|
1119 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
|
1120 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
1121 }
|
|
|
1122
|
|
648
|
1123 mp4->content_length += atom_header_size + atom_data_size;
|
|
|
1124
|
|
638
|
1125 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1126 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
|
1127
|
|
|
1128 atom = &mp4->mdat_atom_buf;
|
|
|
1129 atom->temporary = 1;
|
|
|
1130 atom->pos = atom_header;
|
|
|
1131 atom->last = atom_header + atom_header_size;
|
|
|
1132
|
|
|
1133 return atom_header_size;
|
|
|
1134 }
|
|
|
1135
|
|
|
1136
|
|
|
1137 typedef struct {
|
|
|
1138 u_char size[4];
|
|
|
1139 u_char name[4];
|
|
|
1140 u_char version[1];
|
|
|
1141 u_char flags[3];
|
|
|
1142 u_char creation_time[4];
|
|
|
1143 u_char modification_time[4];
|
|
|
1144 u_char timescale[4];
|
|
|
1145 u_char duration[4];
|
|
|
1146 u_char rate[4];
|
|
|
1147 u_char volume[2];
|
|
|
1148 u_char reserved[10];
|
|
|
1149 u_char matrix[36];
|
|
|
1150 u_char preview_time[4];
|
|
|
1151 u_char preview_duration[4];
|
|
|
1152 u_char poster_time[4];
|
|
|
1153 u_char selection_time[4];
|
|
|
1154 u_char selection_duration[4];
|
|
|
1155 u_char current_time[4];
|
|
|
1156 u_char next_track_id[4];
|
|
|
1157 } ngx_mp4_mvhd_atom_t;
|
|
|
1158
|
|
|
1159 typedef struct {
|
|
|
1160 u_char size[4];
|
|
|
1161 u_char name[4];
|
|
|
1162 u_char version[1];
|
|
|
1163 u_char flags[3];
|
|
|
1164 u_char creation_time[8];
|
|
|
1165 u_char modification_time[8];
|
|
|
1166 u_char timescale[4];
|
|
|
1167 u_char duration[8];
|
|
|
1168 u_char rate[4];
|
|
|
1169 u_char volume[2];
|
|
|
1170 u_char reserved[10];
|
|
|
1171 u_char matrix[36];
|
|
|
1172 u_char preview_time[4];
|
|
|
1173 u_char preview_duration[4];
|
|
|
1174 u_char poster_time[4];
|
|
|
1175 u_char selection_time[4];
|
|
|
1176 u_char selection_duration[4];
|
|
|
1177 u_char current_time[4];
|
|
|
1178 u_char next_track_id[4];
|
|
|
1179 } ngx_mp4_mvhd64_atom_t;
|
|
|
1180
|
|
|
1181
|
|
|
1182 static ngx_int_t
|
|
|
1183 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1184 {
|
|
|
1185 u_char *atom_header;
|
|
|
1186 size_t atom_size;
|
|
|
1187 uint32_t timescale;
|
|
|
1188 uint64_t duration;
|
|
|
1189 ngx_buf_t *atom;
|
|
|
1190 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
|
1191 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
|
1192
|
|
|
1193 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
|
1194
|
|
|
1195 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1196 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
|
1197 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
|
1198 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
|
1199
|
|
670
|
1200 if (ngx_mp4_atom_data_size(ngx_mp4_mvhd_atom_t) > atom_data_size) {
|
|
|
1201 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1202 "\"%s\" mp4 mvhd atom too small", mp4->file.name.data);
|
|
|
1203 return NGX_ERROR;
|
|
|
1204 }
|
|
|
1205
|
|
638
|
1206 if (mvhd_atom->version[0] == 0) {
|
|
|
1207 /* version 0: 32-bit duration */
|
|
|
1208 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
|
1209 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
|
1210
|
|
|
1211 } else {
|
|
|
1212 /* version 1: 64-bit duration */
|
|
670
|
1213
|
|
|
1214 if (ngx_mp4_atom_data_size(ngx_mp4_mvhd64_atom_t) > atom_data_size) {
|
|
|
1215 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1216 "\"%s\" mp4 mvhd atom too small",
|
|
|
1217 mp4->file.name.data);
|
|
|
1218 return NGX_ERROR;
|
|
|
1219 }
|
|
|
1220
|
|
638
|
1221 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
|
1222 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
|
1223 }
|
|
|
1224
|
|
|
1225 mp4->timescale = timescale;
|
|
|
1226
|
|
|
1227 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1228 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1229 timescale, duration, (double) duration / timescale);
|
|
|
1230
|
|
|
1231 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1232
|
|
|
1233 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1234 "mvhd new duration:%uL, time:%.3fs",
|
|
|
1235 duration, (double) duration / timescale);
|
|
|
1236
|
|
|
1237 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1238 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
|
1239
|
|
|
1240 if (mvhd_atom->version[0] == 0) {
|
|
|
1241 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
|
1242
|
|
|
1243 } else {
|
|
|
1244 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
|
1245 }
|
|
|
1246
|
|
|
1247 atom = &mp4->mvhd_atom_buf;
|
|
|
1248 atom->temporary = 1;
|
|
|
1249 atom->pos = atom_header;
|
|
|
1250 atom->last = atom_header + atom_size;
|
|
|
1251
|
|
|
1252 mp4->mvhd_atom.buf = atom;
|
|
|
1253
|
|
|
1254 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1255
|
|
|
1256 return NGX_OK;
|
|
|
1257 }
|
|
|
1258
|
|
|
1259
|
|
|
1260 static ngx_int_t
|
|
|
1261 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1262 {
|
|
|
1263 u_char *atom_header, *atom_end;
|
|
|
1264 off_t atom_file_end;
|
|
|
1265 ngx_int_t rc;
|
|
|
1266 ngx_buf_t *atom;
|
|
|
1267 ngx_http_mp4_trak_t *trak;
|
|
|
1268
|
|
|
1269 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
|
1270
|
|
|
1271 trak = ngx_array_push(&mp4->trak);
|
|
|
1272 if (trak == NULL) {
|
|
|
1273 return NGX_ERROR;
|
|
|
1274 }
|
|
|
1275
|
|
|
1276 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1277
|
|
|
1278 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1279 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
|
1280
|
|
|
1281 atom = &trak->trak_atom_buf;
|
|
|
1282 atom->temporary = 1;
|
|
|
1283 atom->pos = atom_header;
|
|
|
1284 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1285
|
|
|
1286 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
|
1287
|
|
|
1288 atom_end = mp4->buffer_pos + atom_data_size;
|
|
|
1289 atom_file_end = mp4->offset + atom_data_size;
|
|
|
1290
|
|
|
1291 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
|
1292
|
|
|
1293 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1294 "mp4 trak atom: %i", rc);
|
|
|
1295
|
|
|
1296 if (rc == NGX_DECLINED) {
|
|
|
1297 /* skip this trak */
|
|
|
1298 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1299 mp4->trak.nelts--;
|
|
|
1300 mp4->buffer_pos = atom_end;
|
|
|
1301 mp4->offset = atom_file_end;
|
|
|
1302 return NGX_OK;
|
|
|
1303 }
|
|
|
1304
|
|
|
1305 return rc;
|
|
|
1306 }
|
|
|
1307
|
|
|
1308
|
|
|
1309 static void
|
|
|
1310 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1311 ngx_http_mp4_trak_t *trak)
|
|
|
1312 {
|
|
|
1313 ngx_buf_t *atom;
|
|
|
1314
|
|
|
1315 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1316 atom = &trak->trak_atom_buf;
|
|
|
1317 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1318 }
|
|
|
1319
|
|
|
1320
|
|
|
1321 static ngx_int_t
|
|
|
1322 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1323 {
|
|
|
1324 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1325 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
|
1326 mp4->file.name.data);
|
|
|
1327
|
|
|
1328 return NGX_ERROR;
|
|
|
1329 }
|
|
|
1330
|
|
|
1331
|
|
|
1332 typedef struct {
|
|
|
1333 u_char size[4];
|
|
|
1334 u_char name[4];
|
|
|
1335 u_char version[1];
|
|
|
1336 u_char flags[3];
|
|
|
1337 u_char creation_time[4];
|
|
|
1338 u_char modification_time[4];
|
|
|
1339 u_char track_id[4];
|
|
|
1340 u_char reserved1[4];
|
|
|
1341 u_char duration[4];
|
|
|
1342 u_char reserved2[8];
|
|
|
1343 u_char layer[2];
|
|
|
1344 u_char group[2];
|
|
|
1345 u_char volume[2];
|
|
|
1346 u_char reverved3[2];
|
|
|
1347 u_char matrix[36];
|
|
|
1348 u_char width[4];
|
|
|
1349 u_char heigth[4];
|
|
|
1350 } ngx_mp4_tkhd_atom_t;
|
|
|
1351
|
|
|
1352 typedef struct {
|
|
|
1353 u_char size[4];
|
|
|
1354 u_char name[4];
|
|
|
1355 u_char version[1];
|
|
|
1356 u_char flags[3];
|
|
|
1357 u_char creation_time[8];
|
|
|
1358 u_char modification_time[8];
|
|
|
1359 u_char track_id[4];
|
|
|
1360 u_char reserved1[4];
|
|
|
1361 u_char duration[8];
|
|
|
1362 u_char reserved2[8];
|
|
|
1363 u_char layer[2];
|
|
|
1364 u_char group[2];
|
|
|
1365 u_char volume[2];
|
|
|
1366 u_char reverved3[2];
|
|
|
1367 u_char matrix[36];
|
|
|
1368 u_char width[4];
|
|
|
1369 u_char heigth[4];
|
|
|
1370 } ngx_mp4_tkhd64_atom_t;
|
|
|
1371
|
|
|
1372
|
|
|
1373 static ngx_int_t
|
|
|
1374 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1375 {
|
|
|
1376 u_char *atom_header;
|
|
|
1377 size_t atom_size;
|
|
|
1378 uint64_t duration;
|
|
|
1379 ngx_buf_t *atom;
|
|
|
1380 ngx_http_mp4_trak_t *trak;
|
|
|
1381 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
|
1382 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
|
1383
|
|
|
1384 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
|
1385
|
|
|
1386 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1387 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
|
1388 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
|
1389 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
|
1390
|
|
670
|
1391 if (ngx_mp4_atom_data_size(ngx_mp4_tkhd_atom_t) > atom_data_size) {
|
|
|
1392 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1393 "\"%s\" mp4 tkhd atom too small", mp4->file.name.data);
|
|
|
1394 return NGX_ERROR;
|
|
|
1395 }
|
|
|
1396
|
|
638
|
1397 if (tkhd_atom->version[0] == 0) {
|
|
|
1398 /* version 0: 32-bit duration */
|
|
|
1399 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
|
1400
|
|
|
1401 } else {
|
|
|
1402 /* version 1: 64-bit duration */
|
|
670
|
1403
|
|
|
1404 if (ngx_mp4_atom_data_size(ngx_mp4_tkhd64_atom_t) > atom_data_size) {
|
|
|
1405 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1406 "\"%s\" mp4 tkhd atom too small",
|
|
|
1407 mp4->file.name.data);
|
|
|
1408 return NGX_ERROR;
|
|
|
1409 }
|
|
|
1410
|
|
638
|
1411 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
|
1412 }
|
|
|
1413
|
|
|
1414 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1415 "tkhd duration:%uL, time:%.3fs",
|
|
|
1416 duration, (double) duration / mp4->timescale);
|
|
|
1417
|
|
|
1418 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
|
1419
|
|
|
1420 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1421 "tkhd new duration:%uL, time:%.3fs",
|
|
|
1422 duration, (double) duration / mp4->timescale);
|
|
|
1423
|
|
|
1424 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1425
|
|
|
1426 trak = ngx_mp4_last_trak(mp4);
|
|
|
1427 trak->tkhd_size = atom_size;
|
|
|
1428
|
|
|
1429 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
|
1430
|
|
|
1431 if (tkhd_atom->version[0] == 0) {
|
|
|
1432 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
|
1433
|
|
|
1434 } else {
|
|
|
1435 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
|
1436 }
|
|
|
1437
|
|
|
1438 atom = &trak->tkhd_atom_buf;
|
|
|
1439 atom->temporary = 1;
|
|
|
1440 atom->pos = atom_header;
|
|
|
1441 atom->last = atom_header + atom_size;
|
|
|
1442
|
|
|
1443 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
|
1444
|
|
|
1445 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1446
|
|
|
1447 return NGX_OK;
|
|
|
1448 }
|
|
|
1449
|
|
|
1450
|
|
|
1451 static ngx_int_t
|
|
|
1452 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1453 {
|
|
|
1454 u_char *atom_header;
|
|
|
1455 ngx_buf_t *atom;
|
|
|
1456 ngx_http_mp4_trak_t *trak;
|
|
|
1457
|
|
|
1458 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
|
1459
|
|
|
1460 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1461 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
|
1462
|
|
|
1463 trak = ngx_mp4_last_trak(mp4);
|
|
|
1464
|
|
|
1465 atom = &trak->mdia_atom_buf;
|
|
|
1466 atom->temporary = 1;
|
|
|
1467 atom->pos = atom_header;
|
|
|
1468 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1469
|
|
|
1470 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
|
1471
|
|
|
1472 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
|
1473 }
|
|
|
1474
|
|
|
1475
|
|
|
1476 static void
|
|
|
1477 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1478 ngx_http_mp4_trak_t *trak)
|
|
|
1479 {
|
|
|
1480 ngx_buf_t *atom;
|
|
|
1481
|
|
|
1482 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1483 atom = &trak->mdia_atom_buf;
|
|
|
1484 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1485 }
|
|
|
1486
|
|
|
1487
|
|
|
1488 typedef struct {
|
|
|
1489 u_char size[4];
|
|
|
1490 u_char name[4];
|
|
|
1491 u_char version[1];
|
|
|
1492 u_char flags[3];
|
|
|
1493 u_char creation_time[4];
|
|
|
1494 u_char modification_time[4];
|
|
|
1495 u_char timescale[4];
|
|
|
1496 u_char duration[4];
|
|
|
1497 u_char language[2];
|
|
|
1498 u_char quality[2];
|
|
|
1499 } ngx_mp4_mdhd_atom_t;
|
|
|
1500
|
|
|
1501 typedef struct {
|
|
|
1502 u_char size[4];
|
|
|
1503 u_char name[4];
|
|
|
1504 u_char version[1];
|
|
|
1505 u_char flags[3];
|
|
|
1506 u_char creation_time[8];
|
|
|
1507 u_char modification_time[8];
|
|
|
1508 u_char timescale[4];
|
|
|
1509 u_char duration[8];
|
|
|
1510 u_char language[2];
|
|
|
1511 u_char quality[2];
|
|
|
1512 } ngx_mp4_mdhd64_atom_t;
|
|
|
1513
|
|
|
1514
|
|
|
1515 static ngx_int_t
|
|
|
1516 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1517 {
|
|
|
1518 u_char *atom_header;
|
|
|
1519 size_t atom_size;
|
|
|
1520 uint32_t timescale;
|
|
|
1521 uint64_t duration;
|
|
|
1522 ngx_buf_t *atom;
|
|
|
1523 ngx_http_mp4_trak_t *trak;
|
|
|
1524 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
|
1525 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
|
1526
|
|
|
1527 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
|
1528
|
|
|
1529 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1530 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
|
1531 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
|
1532 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
|
1533
|
|
670
|
1534 if (ngx_mp4_atom_data_size(ngx_mp4_mdhd_atom_t) > atom_data_size) {
|
|
|
1535 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1536 "\"%s\" mp4 mdhd atom too small", mp4->file.name.data);
|
|
|
1537 return NGX_ERROR;
|
|
|
1538 }
|
|
|
1539
|
|
638
|
1540 if (mdhd_atom->version[0] == 0) {
|
|
|
1541 /* version 0: everything is 32-bit */
|
|
|
1542 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
|
1543 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
|
1544
|
|
|
1545 } else {
|
|
|
1546 /* version 1: 64-bit duration and 32-bit timescale */
|
|
670
|
1547
|
|
|
1548 if (ngx_mp4_atom_data_size(ngx_mp4_mdhd64_atom_t) > atom_data_size) {
|
|
|
1549 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1550 "\"%s\" mp4 mdhd atom too small",
|
|
|
1551 mp4->file.name.data);
|
|
|
1552 return NGX_ERROR;
|
|
|
1553 }
|
|
|
1554
|
|
638
|
1555 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
|
1556 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
|
1557 }
|
|
|
1558
|
|
|
1559 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1560 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1561 timescale, duration, (double) duration / timescale);
|
|
|
1562
|
|
|
1563 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1564
|
|
|
1565 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1566 "mdhd new duration:%uL, time:%.3fs",
|
|
|
1567 duration, (double) duration / timescale);
|
|
|
1568
|
|
|
1569 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1570
|
|
|
1571 trak = ngx_mp4_last_trak(mp4);
|
|
|
1572 trak->mdhd_size = atom_size;
|
|
|
1573 trak->timescale = timescale;
|
|
|
1574
|
|
|
1575 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
|
1576
|
|
|
1577 if (mdhd_atom->version[0] == 0) {
|
|
|
1578 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
|
1579
|
|
|
1580 } else {
|
|
|
1581 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
|
1582 }
|
|
|
1583
|
|
|
1584 atom = &trak->mdhd_atom_buf;
|
|
|
1585 atom->temporary = 1;
|
|
|
1586 atom->pos = atom_header;
|
|
|
1587 atom->last = atom_header + atom_size;
|
|
|
1588
|
|
|
1589 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
|
1590
|
|
|
1591 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1592
|
|
|
1593 return NGX_OK;
|
|
|
1594 }
|
|
|
1595
|
|
|
1596
|
|
|
1597 static ngx_int_t
|
|
|
1598 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1599 {
|
|
|
1600 u_char *atom_header;
|
|
|
1601 size_t atom_size;
|
|
|
1602 ngx_buf_t *atom;
|
|
|
1603 ngx_http_mp4_trak_t *trak;
|
|
|
1604
|
|
|
1605 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
|
1606
|
|
|
1607 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1608 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1609 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1610 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
|
1611
|
|
|
1612 trak = ngx_mp4_last_trak(mp4);
|
|
|
1613
|
|
|
1614 atom = &trak->hdlr_atom_buf;
|
|
|
1615 atom->temporary = 1;
|
|
|
1616 atom->pos = atom_header;
|
|
|
1617 atom->last = atom_header + atom_size;
|
|
|
1618
|
|
|
1619 trak->hdlr_size = atom_size;
|
|
|
1620 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
|
1621
|
|
|
1622 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1623
|
|
|
1624 return NGX_OK;
|
|
|
1625 }
|
|
|
1626
|
|
|
1627
|
|
|
1628 static ngx_int_t
|
|
|
1629 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1630 {
|
|
|
1631 u_char *atom_header;
|
|
|
1632 ngx_buf_t *atom;
|
|
|
1633 ngx_http_mp4_trak_t *trak;
|
|
|
1634
|
|
|
1635 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
|
1636
|
|
|
1637 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1638 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
|
1639
|
|
|
1640 trak = ngx_mp4_last_trak(mp4);
|
|
|
1641
|
|
|
1642 atom = &trak->minf_atom_buf;
|
|
|
1643 atom->temporary = 1;
|
|
|
1644 atom->pos = atom_header;
|
|
|
1645 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1646
|
|
|
1647 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
|
1648
|
|
|
1649 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
|
1650 }
|
|
|
1651
|
|
|
1652
|
|
|
1653 static void
|
|
|
1654 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1655 ngx_http_mp4_trak_t *trak)
|
|
|
1656 {
|
|
|
1657 ngx_buf_t *atom;
|
|
|
1658
|
|
|
1659 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
|
1660 + trak->vmhd_size
|
|
|
1661 + trak->smhd_size
|
|
|
1662 + trak->dinf_size;
|
|
|
1663 atom = &trak->minf_atom_buf;
|
|
|
1664 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1665 }
|
|
|
1666
|
|
|
1667
|
|
|
1668 static ngx_int_t
|
|
|
1669 ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1670 {
|
|
|
1671 u_char *atom_header;
|
|
|
1672 size_t atom_size;
|
|
|
1673 ngx_buf_t *atom;
|
|
|
1674 ngx_http_mp4_trak_t *trak;
|
|
|
1675
|
|
|
1676 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom");
|
|
|
1677
|
|
|
1678 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1679 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1680 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1681 ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd');
|
|
|
1682
|
|
|
1683 trak = ngx_mp4_last_trak(mp4);
|
|
|
1684
|
|
|
1685 atom = &trak->vmhd_atom_buf;
|
|
|
1686 atom->temporary = 1;
|
|
|
1687 atom->pos = atom_header;
|
|
|
1688 atom->last = atom_header + atom_size;
|
|
|
1689
|
|
|
1690 trak->vmhd_size += atom_size;
|
|
|
1691 trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom;
|
|
|
1692
|
|
|
1693 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1694
|
|
|
1695 return NGX_OK;
|
|
|
1696 }
|
|
|
1697
|
|
|
1698
|
|
|
1699 static ngx_int_t
|
|
|
1700 ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1701 {
|
|
|
1702 u_char *atom_header;
|
|
|
1703 size_t atom_size;
|
|
|
1704 ngx_buf_t *atom;
|
|
|
1705 ngx_http_mp4_trak_t *trak;
|
|
|
1706
|
|
|
1707 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
|
1708
|
|
|
1709 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1710 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1711 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1712 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
|
1713
|
|
|
1714 trak = ngx_mp4_last_trak(mp4);
|
|
|
1715
|
|
|
1716 atom = &trak->smhd_atom_buf;
|
|
|
1717 atom->temporary = 1;
|
|
|
1718 atom->pos = atom_header;
|
|
|
1719 atom->last = atom_header + atom_size;
|
|
|
1720
|
|
|
1721 trak->vmhd_size += atom_size;
|
|
|
1722 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
|
1723
|
|
|
1724 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1725
|
|
|
1726 return NGX_OK;
|
|
|
1727 }
|
|
|
1728
|
|
|
1729
|
|
|
1730 static ngx_int_t
|
|
|
1731 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1732 {
|
|
|
1733 u_char *atom_header;
|
|
|
1734 size_t atom_size;
|
|
|
1735 ngx_buf_t *atom;
|
|
|
1736 ngx_http_mp4_trak_t *trak;
|
|
|
1737
|
|
|
1738 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
|
1739
|
|
|
1740 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1741 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1742 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1743 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
|
1744
|
|
|
1745 trak = ngx_mp4_last_trak(mp4);
|
|
|
1746
|
|
|
1747 atom = &trak->dinf_atom_buf;
|
|
|
1748 atom->temporary = 1;
|
|
|
1749 atom->pos = atom_header;
|
|
|
1750 atom->last = atom_header + atom_size;
|
|
|
1751
|
|
|
1752 trak->dinf_size += atom_size;
|
|
|
1753 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
|
1754
|
|
|
1755 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1756
|
|
|
1757 return NGX_OK;
|
|
|
1758 }
|
|
|
1759
|
|
|
1760
|
|
|
1761 static ngx_int_t
|
|
|
1762 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1763 {
|
|
|
1764 u_char *atom_header;
|
|
|
1765 ngx_buf_t *atom;
|
|
|
1766 ngx_http_mp4_trak_t *trak;
|
|
|
1767
|
|
|
1768 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
|
1769
|
|
|
1770 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1771 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
|
1772
|
|
|
1773 trak = ngx_mp4_last_trak(mp4);
|
|
|
1774
|
|
|
1775 atom = &trak->stbl_atom_buf;
|
|
|
1776 atom->temporary = 1;
|
|
|
1777 atom->pos = atom_header;
|
|
|
1778 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1779
|
|
|
1780 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
|
1781
|
|
|
1782 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
|
1783 }
|
|
|
1784
|
|
|
1785
|
|
|
1786 static void
|
|
|
1787 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1788 ngx_http_mp4_trak_t *trak)
|
|
|
1789 {
|
|
|
1790 ngx_buf_t *atom;
|
|
|
1791
|
|
|
1792 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1793 atom = &trak->stbl_atom_buf;
|
|
|
1794 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1795 }
|
|
|
1796
|
|
|
1797
|
|
|
1798 typedef struct {
|
|
|
1799 u_char size[4];
|
|
|
1800 u_char name[4];
|
|
|
1801 u_char version[1];
|
|
|
1802 u_char flags[3];
|
|
|
1803 u_char entries[4];
|
|
|
1804
|
|
|
1805 u_char media_size[4];
|
|
|
1806 u_char media_name[4];
|
|
|
1807 } ngx_mp4_stsd_atom_t;
|
|
|
1808
|
|
|
1809
|
|
|
1810 static ngx_int_t
|
|
|
1811 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1812 {
|
|
|
1813 u_char *atom_header, *atom_table;
|
|
|
1814 size_t atom_size;
|
|
|
1815 ngx_buf_t *atom;
|
|
|
1816 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
|
1817 ngx_http_mp4_trak_t *trak;
|
|
|
1818
|
|
|
1819 /* sample description atom */
|
|
|
1820
|
|
|
1821 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
|
1822
|
|
|
1823 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1824 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
|
1825 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1826 atom_table = atom_header + atom_size;
|
|
|
1827 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
|
1828 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
|
1829
|
|
670
|
1830 if (ngx_mp4_atom_data_size(ngx_mp4_stsd_atom_t) > atom_data_size) {
|
|
638
|
1831 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
670
|
1832 "\"%s\" mp4 stsd atom too small", mp4->file.name.data);
|
|
638
|
1833 return NGX_ERROR;
|
|
|
1834 }
|
|
|
1835
|
|
|
1836 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1837 "stsd entries:%uD, media:%*s",
|
|
|
1838 ngx_mp4_get_32value(stsd_atom->entries),
|
|
|
1839 4, stsd_atom->media_name);
|
|
|
1840
|
|
|
1841 /* supported media format: "avc1" (H.264) and "mp4a" (MPEG-4/AAC) */
|
|
|
1842
|
|
|
1843 if (ngx_strncmp(stsd_atom->media_name, "avc1", 4) != 0
|
|
|
1844 && ngx_strncmp(stsd_atom->media_name, "mp4a", 4) != 0)
|
|
|
1845 {
|
|
|
1846 return NGX_DECLINED;
|
|
|
1847 }
|
|
|
1848
|
|
|
1849 trak = ngx_mp4_last_trak(mp4);
|
|
|
1850
|
|
|
1851 atom = &trak->stsd_atom_buf;
|
|
|
1852 atom->temporary = 1;
|
|
|
1853 atom->pos = atom_header;
|
|
|
1854 atom->last = atom_table;
|
|
|
1855
|
|
|
1856 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
|
1857 trak->size += atom_size;
|
|
|
1858
|
|
|
1859 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1860
|
|
|
1861 return NGX_OK;
|
|
|
1862 }
|
|
|
1863
|
|
|
1864
|
|
|
1865 typedef struct {
|
|
|
1866 u_char size[4];
|
|
|
1867 u_char name[4];
|
|
|
1868 u_char version[1];
|
|
|
1869 u_char flags[3];
|
|
|
1870 u_char entries[4];
|
|
|
1871 } ngx_mp4_stts_atom_t;
|
|
|
1872
|
|
|
1873 typedef struct {
|
|
|
1874 u_char count[4];
|
|
|
1875 u_char duration[4];
|
|
|
1876 } ngx_mp4_stts_entry_t;
|
|
|
1877
|
|
|
1878
|
|
|
1879 static ngx_int_t
|
|
|
1880 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1881 {
|
|
|
1882 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1883 uint32_t entries;
|
|
|
1884 ngx_buf_t *atom, *data;
|
|
|
1885 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1886 ngx_http_mp4_trak_t *trak;
|
|
|
1887
|
|
|
1888 /* time-to-sample atom */
|
|
|
1889
|
|
|
1890 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
|
1891
|
|
|
1892 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1893 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
|
1894 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
|
1895
|
|
670
|
1896 if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t) > atom_data_size) {
|
|
|
1897 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1898 "\"%s\" mp4 stts atom too small", mp4->file.name.data);
|
|
|
1899 return NGX_ERROR;
|
|
|
1900 }
|
|
|
1901
|
|
638
|
1902 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
|
1903
|
|
|
1904 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1905 "mp4 time-to-sample entries:%uD", entries);
|
|
|
1906
|
|
670
|
1907 if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t)
|
|
|
1908 + entries * sizeof(ngx_mp4_stts_entry_t) > atom_data_size)
|
|
|
1909 {
|
|
|
1910 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1911 "\"%s\" mp4 stts atom too small", mp4->file.name.data);
|
|
|
1912 return NGX_ERROR;
|
|
|
1913 }
|
|
|
1914
|
|
638
|
1915 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
|
1916 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
|
1917
|
|
|
1918 trak = ngx_mp4_last_trak(mp4);
|
|
|
1919 trak->time_to_sample_entries = entries;
|
|
|
1920
|
|
|
1921 atom = &trak->stts_atom_buf;
|
|
|
1922 atom->temporary = 1;
|
|
|
1923 atom->pos = atom_header;
|
|
|
1924 atom->last = atom_table;
|
|
|
1925
|
|
|
1926 data = &trak->stts_data_buf;
|
|
|
1927 data->temporary = 1;
|
|
|
1928 data->pos = atom_table;
|
|
|
1929 data->last = atom_end;
|
|
|
1930
|
|
|
1931 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
|
1932 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
|
1933
|
|
|
1934 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1935
|
|
|
1936 return NGX_OK;
|
|
|
1937 }
|
|
|
1938
|
|
|
1939
|
|
|
1940 static ngx_int_t
|
|
|
1941 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1942 ngx_http_mp4_trak_t *trak)
|
|
|
1943 {
|
|
|
1944 size_t atom_size;
|
|
|
1945 uint32_t entries, count, duration;
|
|
|
1946 uint64_t start_time;
|
|
|
1947 ngx_buf_t *atom, *data;
|
|
|
1948 ngx_uint_t start_sample;
|
|
|
1949 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1950 ngx_mp4_stts_entry_t *entry, *end;
|
|
|
1951
|
|
|
1952 /*
|
|
|
1953 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
|
1954 * from mdia.mdhd atom which may reside after mdia.minf
|
|
|
1955 */
|
|
|
1956
|
|
|
1957 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1958 "mp4 stts atom update");
|
|
|
1959
|
|
|
1960 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
|
1961
|
|
|
1962 if (data == NULL) {
|
|
|
1963 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1964 "no mp4 stts atoms were found in \"%s\"",
|
|
|
1965 mp4->file.name.data);
|
|
|
1966 return NGX_ERROR;
|
|
|
1967 }
|
|
|
1968
|
|
|
1969 entries = trak->time_to_sample_entries;
|
|
644
|
1970 start_time = (uint64_t) mp4->start * trak->timescale / 1000;
|
|
638
|
1971
|
|
|
1972 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1973 "time-to-sample start_time:%uL", start_time);
|
|
|
1974
|
|
|
1975 start_sample = 0;
|
|
|
1976 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
|
1977 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
|
1978
|
|
|
1979 while (entry < end) {
|
|
|
1980 count = ngx_mp4_get_32value(entry->count);
|
|
|
1981 duration = ngx_mp4_get_32value(entry->duration);
|
|
|
1982
|
|
|
1983 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1984 "count:%uD, duration:%uD", count, duration);
|
|
|
1985
|
|
650
|
1986 if (start_time < (uint64_t) count * duration) {
|
|
638
|
1987 start_sample += (ngx_uint_t) (start_time / duration);
|
|
670
|
1988 count -= (uint32_t) (start_time / duration);
|
|
638
|
1989 ngx_mp4_set_32value(entry->count, count);
|
|
|
1990 goto found;
|
|
|
1991 }
|
|
|
1992
|
|
|
1993 start_sample += count;
|
|
|
1994 start_time -= count * duration;
|
|
|
1995 entries--;
|
|
|
1996 entry++;
|
|
|
1997 }
|
|
|
1998
|
|
|
1999 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2000 "start time is out mp4 stts samples in \"%s\"",
|
|
|
2001 mp4->file.name.data);
|
|
|
2002
|
|
|
2003 return NGX_ERROR;
|
|
|
2004
|
|
|
2005 found:
|
|
|
2006
|
|
|
2007 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2008 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
|
2009
|
|
|
2010 trak->start_sample = start_sample;
|
|
|
2011
|
|
|
2012 data->pos = (u_char *) entry;
|
|
|
2013 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
|
2014 trak->size += atom_size;
|
|
|
2015
|
|
|
2016 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
|
2017 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
|
2018 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
|
2019 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
|
2020
|
|
|
2021 return NGX_OK;
|
|
|
2022 }
|
|
|
2023
|
|
|
2024
|
|
|
2025 typedef struct {
|
|
|
2026 u_char size[4];
|
|
|
2027 u_char name[4];
|
|
|
2028 u_char version[1];
|
|
|
2029 u_char flags[3];
|
|
|
2030 u_char entries[4];
|
|
|
2031 } ngx_http_mp4_stss_atom_t;
|
|
|
2032
|
|
|
2033
|
|
|
2034 static ngx_int_t
|
|
|
2035 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2036 {
|
|
|
2037 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2038 uint32_t entries;
|
|
|
2039 ngx_buf_t *atom, *data;
|
|
|
2040 ngx_http_mp4_trak_t *trak;
|
|
|
2041 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2042
|
|
|
2043 /* sync samples atom */
|
|
|
2044
|
|
|
2045 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
|
2046
|
|
|
2047 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2048 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
|
2049 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
|
2050
|
|
670
|
2051 if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t) > atom_data_size) {
|
|
|
2052 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2053 "\"%s\" mp4 stss atom too small", mp4->file.name.data);
|
|
|
2054 return NGX_ERROR;
|
|
|
2055 }
|
|
|
2056
|
|
638
|
2057 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
|
2058
|
|
|
2059 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2060 "sync sample entries:%uD", entries);
|
|
|
2061
|
|
|
2062 trak = ngx_mp4_last_trak(mp4);
|
|
|
2063 trak->sync_samples_entries = entries;
|
|
|
2064
|
|
|
2065 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
|
2066
|
|
|
2067 atom = &trak->stss_atom_buf;
|
|
|
2068 atom->temporary = 1;
|
|
|
2069 atom->pos = atom_header;
|
|
|
2070 atom->last = atom_table;
|
|
|
2071
|
|
670
|
2072 if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t)
|
|
|
2073 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2074 {
|
|
638
|
2075 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
670
|
2076 "\"%s\" mp4 stss atom too small", mp4->file.name.data);
|
|
638
|
2077 return NGX_ERROR;
|
|
|
2078 }
|
|
|
2079
|
|
670
|
2080 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2081
|
|
638
|
2082 data = &trak->stss_data_buf;
|
|
|
2083 data->temporary = 1;
|
|
|
2084 data->pos = atom_table;
|
|
|
2085 data->last = atom_end;
|
|
|
2086
|
|
|
2087 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
|
2088 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
|
2089
|
|
|
2090 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2091
|
|
|
2092 return NGX_OK;
|
|
|
2093 }
|
|
|
2094
|
|
|
2095
|
|
|
2096 static ngx_int_t
|
|
|
2097 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2098 ngx_http_mp4_trak_t *trak)
|
|
|
2099 {
|
|
|
2100 size_t atom_size;
|
|
|
2101 uint32_t entries, sample, start_sample, *entry, *end;
|
|
|
2102 ngx_buf_t *atom, *data;
|
|
|
2103 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2104
|
|
|
2105 /*
|
|
|
2106 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
|
2107 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2108 * atom which may reside after mdia.minf
|
|
|
2109 */
|
|
|
2110
|
|
|
2111 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2112 "mp4 stss atom update");
|
|
|
2113
|
|
|
2114 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
|
2115
|
|
|
2116 if (data == NULL) {
|
|
|
2117 return NGX_OK;
|
|
|
2118 }
|
|
|
2119
|
|
|
2120 /* sync samples starts from 1 */
|
|
|
2121 start_sample = trak->start_sample + 1;
|
|
|
2122 entries = trak->sync_samples_entries;
|
|
|
2123
|
|
|
2124 entry = (uint32_t *) data->pos;
|
|
|
2125 end = (uint32_t *) data->last;
|
|
|
2126
|
|
|
2127 while (entry < end) {
|
|
|
2128 sample = ngx_mp4_get_32value(entry);
|
|
|
2129
|
|
|
2130 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2131 "start:%uD, sync:%uD", start_sample, sample);
|
|
|
2132
|
|
|
2133 if (sample >= start_sample) {
|
|
|
2134 goto found;
|
|
|
2135 }
|
|
|
2136
|
|
|
2137 entries--;
|
|
|
2138 entry++;
|
|
|
2139 }
|
|
|
2140
|
|
|
2141 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2142 "start sample is out of mp4 stss atom in \"%s\"",
|
|
|
2143 mp4->file.name.data);
|
|
|
2144
|
|
|
2145 return NGX_ERROR;
|
|
|
2146
|
|
|
2147 found:
|
|
|
2148
|
|
|
2149 data->pos = (u_char *) entry;
|
|
|
2150
|
|
|
2151 start_sample = trak->start_sample;
|
|
|
2152
|
|
|
2153 while (entry < end) {
|
|
|
2154 sample = ngx_mp4_get_32value(entry);
|
|
|
2155 sample -= start_sample;
|
|
|
2156 ngx_mp4_set_32value(entry, sample);
|
|
|
2157 entry++;
|
|
|
2158 }
|
|
|
2159
|
|
|
2160 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
|
2161 trak->size += atom_size;
|
|
|
2162
|
|
|
2163 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
|
2164 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
|
2165
|
|
|
2166 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
|
2167 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
|
2168
|
|
|
2169 return NGX_OK;
|
|
|
2170 }
|
|
|
2171
|
|
|
2172
|
|
|
2173 typedef struct {
|
|
|
2174 u_char size[4];
|
|
|
2175 u_char name[4];
|
|
|
2176 u_char version[1];
|
|
|
2177 u_char flags[3];
|
|
|
2178 u_char entries[4];
|
|
|
2179 } ngx_mp4_ctts_atom_t;
|
|
|
2180
|
|
|
2181 typedef struct {
|
|
|
2182 u_char count[4];
|
|
|
2183 u_char offset[4];
|
|
|
2184 } ngx_mp4_ctts_entry_t;
|
|
|
2185
|
|
|
2186
|
|
|
2187 static ngx_int_t
|
|
|
2188 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2189 {
|
|
|
2190 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2191 uint32_t entries;
|
|
|
2192 ngx_buf_t *atom, *data;
|
|
|
2193 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2194 ngx_http_mp4_trak_t *trak;
|
|
|
2195
|
|
|
2196 /* composition offsets atom */
|
|
|
2197
|
|
|
2198 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
|
2199
|
|
|
2200 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2201 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
|
2202 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
|
2203
|
|
670
|
2204 if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t) > atom_data_size) {
|
|
|
2205 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2206 "\"%s\" mp4 ctts atom too small", mp4->file.name.data);
|
|
|
2207 return NGX_ERROR;
|
|
|
2208 }
|
|
|
2209
|
|
638
|
2210 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
|
2211
|
|
|
2212 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2213 "composition offset entries:%uD", entries);
|
|
|
2214
|
|
|
2215 trak = ngx_mp4_last_trak(mp4);
|
|
|
2216 trak->composition_offset_entries = entries;
|
|
|
2217
|
|
|
2218 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
|
2219
|
|
|
2220 atom = &trak->ctts_atom_buf;
|
|
|
2221 atom->temporary = 1;
|
|
|
2222 atom->pos = atom_header;
|
|
|
2223 atom->last = atom_table;
|
|
|
2224
|
|
670
|
2225 if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t)
|
|
|
2226 + entries * sizeof(ngx_mp4_ctts_entry_t) > atom_data_size)
|
|
|
2227 {
|
|
638
|
2228 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
670
|
2229 "\"%s\" mp4 ctts atom too small", mp4->file.name.data);
|
|
638
|
2230 return NGX_ERROR;
|
|
|
2231 }
|
|
|
2232
|
|
670
|
2233 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
|
2234
|
|
638
|
2235 data = &trak->ctts_data_buf;
|
|
|
2236 data->temporary = 1;
|
|
|
2237 data->pos = atom_table;
|
|
|
2238 data->last = atom_end;
|
|
|
2239
|
|
|
2240 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
|
2241 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
|
2242
|
|
|
2243 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2244
|
|
|
2245 return NGX_OK;
|
|
|
2246 }
|
|
|
2247
|
|
|
2248
|
|
|
2249 static void
|
|
|
2250 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2251 ngx_http_mp4_trak_t *trak)
|
|
|
2252 {
|
|
|
2253 size_t atom_size;
|
|
|
2254 uint32_t entries, count, start_sample;
|
|
|
2255 ngx_buf_t *atom, *data;
|
|
|
2256 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2257 ngx_mp4_ctts_entry_t *entry, *end;
|
|
|
2258
|
|
|
2259 /*
|
|
|
2260 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
|
2261 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2262 * atom which may reside after mdia.minf
|
|
|
2263 */
|
|
|
2264
|
|
|
2265 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2266 "mp4 ctts atom update");
|
|
|
2267
|
|
|
2268 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
|
2269
|
|
|
2270 if (data == NULL) {
|
|
|
2271 return;
|
|
|
2272 }
|
|
|
2273
|
|
|
2274 /* sync samples starts from 1 */
|
|
|
2275 start_sample = trak->start_sample + 1;
|
|
|
2276 entries = trak->composition_offset_entries;
|
|
|
2277 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
|
2278 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
|
2279
|
|
|
2280 while (entry < end) {
|
|
|
2281 count = ngx_mp4_get_32value(entry->count);
|
|
|
2282
|
|
|
2283 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2284 "start:%uD, count:%uD, offset:%uD",
|
|
|
2285 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
|
2286
|
|
|
2287 if (start_sample <= count) {
|
|
|
2288 count -= (start_sample - 1);
|
|
|
2289 ngx_mp4_set_32value(entry->count, count);
|
|
|
2290 goto found;
|
|
|
2291 }
|
|
|
2292
|
|
|
2293 start_sample -= count;
|
|
|
2294 entries--;
|
|
|
2295 entry++;
|
|
|
2296 }
|
|
|
2297
|
|
|
2298 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
|
2299 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
|
2300
|
|
|
2301 return;
|
|
|
2302
|
|
|
2303 found:
|
|
|
2304
|
|
|
2305 data->pos = (u_char *) entry;
|
|
|
2306 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
|
2307 trak->size += atom_size;
|
|
|
2308
|
|
|
2309 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
|
2310 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
|
2311
|
|
|
2312 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
|
2313 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
|
2314
|
|
|
2315 return;
|
|
|
2316 }
|
|
|
2317
|
|
|
2318
|
|
|
2319 typedef struct {
|
|
|
2320 u_char size[4];
|
|
|
2321 u_char name[4];
|
|
|
2322 u_char version[1];
|
|
|
2323 u_char flags[3];
|
|
|
2324 u_char entries[4];
|
|
|
2325 } ngx_mp4_stsc_atom_t;
|
|
|
2326
|
|
|
2327
|
|
|
2328 static ngx_int_t
|
|
|
2329 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2330 {
|
|
|
2331 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2332 uint32_t entries;
|
|
|
2333 ngx_buf_t *atom, *data;
|
|
|
2334 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2335 ngx_http_mp4_trak_t *trak;
|
|
|
2336
|
|
|
2337 /* sample-to-chunk atom */
|
|
|
2338
|
|
|
2339 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
|
2340
|
|
|
2341 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2342 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
|
2343 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
|
2344
|
|
670
|
2345 if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t) > atom_data_size) {
|
|
|
2346 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2347 "\"%s\" mp4 stsc atom too small", mp4->file.name.data);
|
|
|
2348 return NGX_ERROR;
|
|
|
2349 }
|
|
|
2350
|
|
638
|
2351 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
|
2352
|
|
|
2353 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2354 "sample-to-chunk entries:%uD", entries);
|
|
|
2355
|
|
670
|
2356 if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t)
|
|
|
2357 + entries * sizeof(ngx_mp4_stsc_entry_t) > atom_data_size)
|
|
|
2358 {
|
|
|
2359 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2360 "\"%s\" mp4 stsc atom too small", mp4->file.name.data);
|
|
|
2361 return NGX_ERROR;
|
|
|
2362 }
|
|
|
2363
|
|
638
|
2364 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
|
2365 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2366
|
|
|
2367 trak = ngx_mp4_last_trak(mp4);
|
|
|
2368 trak->sample_to_chunk_entries = entries;
|
|
|
2369
|
|
|
2370 atom = &trak->stsc_atom_buf;
|
|
|
2371 atom->temporary = 1;
|
|
|
2372 atom->pos = atom_header;
|
|
|
2373 atom->last = atom_table;
|
|
|
2374
|
|
|
2375 data = &trak->stsc_data_buf;
|
|
|
2376 data->temporary = 1;
|
|
|
2377 data->pos = atom_table;
|
|
|
2378 data->last = atom_end;
|
|
|
2379
|
|
|
2380 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
|
2381 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
|
2382
|
|
|
2383 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2384
|
|
|
2385 return NGX_OK;
|
|
|
2386 }
|
|
|
2387
|
|
|
2388
|
|
|
2389 static ngx_int_t
|
|
|
2390 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2391 ngx_http_mp4_trak_t *trak)
|
|
|
2392 {
|
|
|
2393 size_t atom_size;
|
|
|
2394 uint32_t start_sample, entries, chunk, samples, id,
|
|
|
2395 next_chunk, n;
|
|
|
2396 ngx_buf_t *atom, *data, *buf;
|
|
|
2397 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2398 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
|
2399
|
|
|
2400 /*
|
|
|
2401 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
|
2402 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2403 * atom which may reside after mdia.minf
|
|
|
2404 */
|
|
|
2405
|
|
|
2406 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2407 "mp4 stsc atom update");
|
|
|
2408
|
|
|
2409 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
|
2410
|
|
|
2411 if (data == NULL) {
|
|
|
2412 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2413 "no mp4 stsc atoms were found in \"%s\"",
|
|
|
2414 mp4->file.name.data);
|
|
|
2415 return NGX_ERROR;
|
|
|
2416 }
|
|
|
2417
|
|
670
|
2418 if (trak->sample_to_chunk_entries == 0) {
|
|
|
2419 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2420 "zero number of entries in stsc atom in \"%s\"",
|
|
|
2421 mp4->file.name.data);
|
|
|
2422 return NGX_ERROR;
|
|
|
2423 }
|
|
|
2424
|
|
638
|
2425 start_sample = (uint32_t) trak->start_sample;
|
|
|
2426 entries = trak->sample_to_chunk_entries - 1;
|
|
|
2427
|
|
|
2428 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
|
2429 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
|
2430
|
|
|
2431 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2432 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2433 id = ngx_mp4_get_32value(entry->id);
|
|
|
2434 entry++;
|
|
|
2435
|
|
|
2436 while (entry < end) {
|
|
|
2437
|
|
|
2438 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2439
|
|
|
2440 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2441 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
|
2442 "samples:%uD, id:%uD",
|
|
|
2443 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
|
2444
|
|
|
2445 n = (next_chunk - chunk) * samples;
|
|
|
2446
|
|
|
2447 if (start_sample <= n) {
|
|
|
2448 goto found;
|
|
|
2449 }
|
|
|
2450
|
|
|
2451 start_sample -= n;
|
|
|
2452
|
|
|
2453 chunk = next_chunk;
|
|
|
2454 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2455 id = ngx_mp4_get_32value(entry->id);
|
|
|
2456 entries--;
|
|
|
2457 entry++;
|
|
|
2458 }
|
|
|
2459
|
|
|
2460 next_chunk = trak->chunks;
|
|
|
2461
|
|
|
2462 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2463 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
|
2464 start_sample, chunk, next_chunk - chunk, samples);
|
|
|
2465
|
|
|
2466 n = (next_chunk - chunk) * samples;
|
|
|
2467
|
|
|
2468 if (start_sample > n) {
|
|
|
2469 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2470 "start time is out mp4 stsc chunks in \"%s\"",
|
|
|
2471 mp4->file.name.data);
|
|
|
2472 return NGX_ERROR;
|
|
|
2473 }
|
|
|
2474
|
|
|
2475 found:
|
|
|
2476
|
|
|
2477 entries++;
|
|
|
2478 entry--;
|
|
|
2479
|
|
|
2480 if (samples == 0) {
|
|
|
2481 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2482 "zero number of samples in \"%s\"",
|
|
|
2483 mp4->file.name.data);
|
|
|
2484 return NGX_ERROR;
|
|
|
2485 }
|
|
|
2486
|
|
|
2487 trak->start_chunk = chunk - 1;
|
|
|
2488
|
|
|
2489 trak->start_chunk += start_sample / samples;
|
|
|
2490 trak->chunk_samples = start_sample % samples;
|
|
|
2491
|
|
|
2492 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2493 "start chunk:%ui, samples:%uD",
|
|
|
2494 trak->start_chunk, trak->chunk_samples);
|
|
|
2495
|
|
|
2496 data->pos = (u_char *) entry;
|
|
|
2497 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
|
2498
|
|
656
|
2499 ngx_mp4_set_32value(entry->chunk, 1);
|
|
|
2500
|
|
678
|
2501 if (trak->chunk_samples && next_chunk - trak->start_chunk == 2) {
|
|
|
2502
|
|
|
2503 /* last chunk in the entry */
|
|
|
2504
|
|
|
2505 ngx_mp4_set_32value(entry->samples, samples - trak->chunk_samples);
|
|
|
2506
|
|
|
2507 } else if (trak->chunk_samples) {
|
|
638
|
2508
|
|
|
2509 first = &trak->stsc_chunk_entry;
|
|
|
2510 ngx_mp4_set_32value(first->chunk, 1);
|
|
|
2511 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
|
2512 ngx_mp4_set_32value(first->id, id);
|
|
|
2513
|
|
|
2514 buf = &trak->stsc_chunk_buf;
|
|
|
2515 buf->temporary = 1;
|
|
|
2516 buf->pos = (u_char *) first;
|
|
|
2517 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2518
|
|
|
2519 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
|
2520
|
|
|
2521 ngx_mp4_set_32value(entry->chunk, 2);
|
|
|
2522
|
|
678
|
2523 entries++;
|
|
638
|
2524 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2525 }
|
|
|
2526
|
|
|
2527 while (++entry < end) {
|
|
|
2528 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2529 chunk -= trak->start_chunk;
|
|
|
2530 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
|
2531 }
|
|
|
2532
|
|
|
2533 trak->size += atom_size;
|
|
|
2534
|
|
|
2535 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
|
2536 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
|
2537
|
|
|
2538 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
|
2539 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
|
2540
|
|
|
2541 return NGX_OK;
|
|
|
2542 }
|
|
|
2543
|
|
|
2544
|
|
|
2545 typedef struct {
|
|
|
2546 u_char size[4];
|
|
|
2547 u_char name[4];
|
|
|
2548 u_char version[1];
|
|
|
2549 u_char flags[3];
|
|
|
2550 u_char uniform_size[4];
|
|
|
2551 u_char entries[4];
|
|
|
2552 } ngx_mp4_stsz_atom_t;
|
|
|
2553
|
|
|
2554
|
|
|
2555 static ngx_int_t
|
|
|
2556 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2557 {
|
|
|
2558 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2559 size_t atom_size;
|
|
|
2560 uint32_t entries, size;
|
|
|
2561 ngx_buf_t *atom, *data;
|
|
|
2562 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2563 ngx_http_mp4_trak_t *trak;
|
|
|
2564
|
|
|
2565 /* sample sizes atom */
|
|
|
2566
|
|
|
2567 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
|
2568
|
|
|
2569 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2570 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
|
2571 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
|
2572
|
|
670
|
2573 if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t) > atom_data_size) {
|
|
|
2574 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2575 "\"%s\" mp4 stsz atom too small", mp4->file.name.data);
|
|
|
2576 return NGX_ERROR;
|
|
|
2577 }
|
|
|
2578
|
|
638
|
2579 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
|
2580 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
|
2581
|
|
|
2582 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2583 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
|
2584
|
|
|
2585 trak = ngx_mp4_last_trak(mp4);
|
|
|
2586 trak->sample_sizes_entries = entries;
|
|
|
2587
|
|
|
2588 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
|
2589
|
|
|
2590 atom = &trak->stsz_atom_buf;
|
|
|
2591 atom->temporary = 1;
|
|
|
2592 atom->pos = atom_header;
|
|
|
2593 atom->last = atom_table;
|
|
|
2594
|
|
|
2595 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
|
2596
|
|
|
2597 if (size == 0) {
|
|
670
|
2598 if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t)
|
|
|
2599 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2600 {
|
|
638
|
2601 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
670
|
2602 "\"%s\" mp4 stsz atom too small",
|
|
638
|
2603 mp4->file.name.data);
|
|
|
2604 return NGX_ERROR;
|
|
|
2605 }
|
|
|
2606
|
|
670
|
2607 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2608
|
|
638
|
2609 data = &trak->stsz_data_buf;
|
|
|
2610 data->temporary = 1;
|
|
|
2611 data->pos = atom_table;
|
|
|
2612 data->last = atom_end;
|
|
|
2613
|
|
|
2614 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
|
2615
|
|
|
2616 } else {
|
|
|
2617 /* if size != 0 then all samples are the same size */
|
|
|
2618 /* TODO : chunk samples */
|
|
|
2619 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
2620 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
2621 trak->size += atom_size;
|
|
|
2622 }
|
|
|
2623
|
|
|
2624 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2625
|
|
|
2626 return NGX_OK;
|
|
|
2627 }
|
|
|
2628
|
|
|
2629
|
|
670
|
2630 static ngx_int_t
|
|
638
|
2631 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2632 ngx_http_mp4_trak_t *trak)
|
|
|
2633 {
|
|
|
2634 size_t atom_size;
|
|
|
2635 uint32_t *pos, *end;
|
|
|
2636 ngx_buf_t *atom, *data;
|
|
|
2637 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2638
|
|
|
2639 /*
|
|
|
2640 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
|
2641 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2642 * atom which may reside after mdia.minf
|
|
|
2643 */
|
|
|
2644
|
|
|
2645 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2646 "mp4 stsz atom update");
|
|
|
2647
|
|
|
2648 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
|
2649
|
|
|
2650 if (data) {
|
|
670
|
2651 if (trak->start_sample > trak->sample_sizes_entries) {
|
|
|
2652 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2653 "start time is out mp4 stsz samples in \"%s\"",
|
|
|
2654 mp4->file.name.data);
|
|
|
2655 return NGX_ERROR;
|
|
|
2656 }
|
|
|
2657
|
|
638
|
2658 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
|
2659 end = (uint32_t *) data->pos;
|
|
|
2660
|
|
|
2661 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
|
2662 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
|
2663 }
|
|
|
2664
|
|
|
2665 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
640
|
2666 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
|
638
|
2667
|
|
|
2668 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
|
2669 trak->size += atom_size;
|
|
|
2670
|
|
|
2671 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
|
2672 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
|
2673
|
|
|
2674 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
|
2675 ngx_mp4_set_32value(stsz_atom->entries,
|
|
|
2676 trak->sample_sizes_entries - trak->start_sample);
|
|
|
2677 }
|
|
670
|
2678
|
|
|
2679 return NGX_OK;
|
|
638
|
2680 }
|
|
|
2681
|
|
|
2682
|
|
|
2683 typedef struct {
|
|
|
2684 u_char size[4];
|
|
|
2685 u_char name[4];
|
|
|
2686 u_char version[1];
|
|
|
2687 u_char flags[3];
|
|
|
2688 u_char entries[4];
|
|
|
2689 } ngx_mp4_stco_atom_t;
|
|
|
2690
|
|
|
2691
|
|
|
2692 static ngx_int_t
|
|
|
2693 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2694 {
|
|
|
2695 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2696 uint32_t entries;
|
|
|
2697 ngx_buf_t *atom, *data;
|
|
|
2698 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2699 ngx_http_mp4_trak_t *trak;
|
|
|
2700
|
|
|
2701 /* chunk offsets atom */
|
|
|
2702
|
|
|
2703 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
|
2704
|
|
|
2705 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2706 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
|
2707 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
|
2708
|
|
670
|
2709 if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t) > atom_data_size) {
|
|
|
2710 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2711 "\"%s\" mp4 stco atom too small", mp4->file.name.data);
|
|
|
2712 return NGX_ERROR;
|
|
|
2713 }
|
|
|
2714
|
|
638
|
2715 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
|
2716
|
|
|
2717 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2718
|
|
670
|
2719 if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t)
|
|
|
2720 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2721 {
|
|
|
2722 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2723 "\"%s\" mp4 stco atom too small", mp4->file.name.data);
|
|
|
2724 return NGX_ERROR;
|
|
|
2725 }
|
|
|
2726
|
|
638
|
2727 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
|
2728 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2729
|
|
|
2730 trak = ngx_mp4_last_trak(mp4);
|
|
|
2731 trak->chunks = entries;
|
|
|
2732
|
|
640
|
2733 atom = &trak->stco_atom_buf;
|
|
638
|
2734 atom->temporary = 1;
|
|
|
2735 atom->pos = atom_header;
|
|
|
2736 atom->last = atom_table;
|
|
|
2737
|
|
640
|
2738 data = &trak->stco_data_buf;
|
|
638
|
2739 data->temporary = 1;
|
|
|
2740 data->pos = atom_table;
|
|
|
2741 data->last = atom_end;
|
|
|
2742
|
|
|
2743 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
|
2744 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
|
2745
|
|
|
2746 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2747
|
|
|
2748 return NGX_OK;
|
|
|
2749 }
|
|
|
2750
|
|
|
2751
|
|
|
2752 static ngx_int_t
|
|
|
2753 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2754 ngx_http_mp4_trak_t *trak)
|
|
|
2755 {
|
|
|
2756 size_t atom_size;
|
|
|
2757 ngx_buf_t *atom, *data;
|
|
|
2758 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2759
|
|
|
2760 /*
|
|
|
2761 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
|
2762 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2763 * atom which may reside after mdia.minf
|
|
|
2764 */
|
|
|
2765
|
|
|
2766 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2767 "mp4 stco atom update");
|
|
|
2768
|
|
|
2769 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2770
|
|
|
2771 if (data == NULL) {
|
|
|
2772 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2773 "no mp4 stco atoms were found in \"%s\"",
|
|
|
2774 mp4->file.name.data);
|
|
|
2775 return NGX_ERROR;
|
|
|
2776 }
|
|
|
2777
|
|
670
|
2778 if (trak->start_chunk > trak->chunks) {
|
|
|
2779 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2780 "start time is out mp4 stco chunks in \"%s\"",
|
|
|
2781 mp4->file.name.data);
|
|
|
2782 return NGX_ERROR;
|
|
|
2783 }
|
|
|
2784
|
|
638
|
2785 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
|
2786 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
|
2787 trak->size += atom_size;
|
|
|
2788
|
|
|
2789 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
|
2790 trak->start_offset += trak->chunk_samples_size;
|
|
|
2791 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
|
2792
|
|
|
2793 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2794 "start chunk offset:%uD", trak->start_offset);
|
|
|
2795
|
|
|
2796 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
|
2797 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
|
2798
|
|
|
2799 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
|
2800 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2801
|
|
|
2802 return NGX_OK;
|
|
|
2803 }
|
|
|
2804
|
|
|
2805
|
|
|
2806 static void
|
|
|
2807 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2808 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
|
2809 {
|
|
|
2810 uint32_t offset, *entry, *end;
|
|
|
2811 ngx_buf_t *data;
|
|
|
2812
|
|
|
2813 /*
|
|
|
2814 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
|
2815 * minimal start offset of all traks and new moov atom size
|
|
|
2816 */
|
|
|
2817
|
|
|
2818 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2819 "mp4 stco atom adjustment");
|
|
|
2820
|
|
|
2821 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2822 entry = (uint32_t *) data->pos;
|
|
|
2823 end = (uint32_t *) data->last;
|
|
|
2824
|
|
|
2825 while (entry < end) {
|
|
|
2826 offset = ngx_mp4_get_32value(entry);
|
|
|
2827 offset += adjustment;
|
|
|
2828 ngx_mp4_set_32value(entry, offset);
|
|
|
2829 entry++;
|
|
|
2830 }
|
|
|
2831 }
|
|
|
2832
|
|
|
2833
|
|
640
|
2834 typedef struct {
|
|
|
2835 u_char size[4];
|
|
|
2836 u_char name[4];
|
|
|
2837 u_char version[1];
|
|
|
2838 u_char flags[3];
|
|
|
2839 u_char entries[4];
|
|
|
2840 } ngx_mp4_co64_atom_t;
|
|
|
2841
|
|
|
2842
|
|
|
2843 static ngx_int_t
|
|
|
2844 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2845 {
|
|
|
2846 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2847 uint32_t entries;
|
|
|
2848 ngx_buf_t *atom, *data;
|
|
|
2849 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2850 ngx_http_mp4_trak_t *trak;
|
|
|
2851
|
|
|
2852 /* chunk offsets atom */
|
|
|
2853
|
|
|
2854 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
|
|
|
2855
|
|
|
2856 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2857 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
|
|
|
2858 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
|
|
|
2859
|
|
670
|
2860 if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t) > atom_data_size) {
|
|
|
2861 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2862 "\"%s\" mp4 co64 atom too small", mp4->file.name.data);
|
|
|
2863 return NGX_ERROR;
|
|
|
2864 }
|
|
|
2865
|
|
640
|
2866 entries = ngx_mp4_get_32value(co64_atom->entries);
|
|
|
2867
|
|
|
2868 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2869
|
|
670
|
2870 if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t)
|
|
|
2871 + entries * sizeof(uint64_t) > atom_data_size)
|
|
|
2872 {
|
|
|
2873 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2874 "\"%s\" mp4 co64 atom too small", mp4->file.name.data);
|
|
|
2875 return NGX_ERROR;
|
|
|
2876 }
|
|
|
2877
|
|
640
|
2878 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
|
|
|
2879 atom_end = atom_table + entries * sizeof(uint64_t);
|
|
|
2880
|
|
|
2881 trak = ngx_mp4_last_trak(mp4);
|
|
|
2882 trak->chunks = entries;
|
|
|
2883
|
|
|
2884 atom = &trak->co64_atom_buf;
|
|
|
2885 atom->temporary = 1;
|
|
|
2886 atom->pos = atom_header;
|
|
|
2887 atom->last = atom_table;
|
|
|
2888
|
|
|
2889 data = &trak->co64_data_buf;
|
|
|
2890 data->temporary = 1;
|
|
|
2891 data->pos = atom_table;
|
|
|
2892 data->last = atom_end;
|
|
|
2893
|
|
|
2894 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
|
|
|
2895 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
|
|
|
2896
|
|
|
2897 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2898
|
|
|
2899 return NGX_OK;
|
|
|
2900 }
|
|
|
2901
|
|
|
2902
|
|
|
2903 static ngx_int_t
|
|
|
2904 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2905 ngx_http_mp4_trak_t *trak)
|
|
|
2906 {
|
|
|
2907 size_t atom_size;
|
|
|
2908 ngx_buf_t *atom, *data;
|
|
|
2909 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2910
|
|
|
2911 /*
|
|
|
2912 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
|
2913 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2914 * atom which may reside after mdia.minf
|
|
|
2915 */
|
|
|
2916
|
|
|
2917 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2918 "mp4 co64 atom update");
|
|
|
2919
|
|
|
2920 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2921
|
|
|
2922 if (data == NULL) {
|
|
|
2923 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2924 "no mp4 co64 atoms were found in \"%s\"",
|
|
|
2925 mp4->file.name.data);
|
|
|
2926 return NGX_ERROR;
|
|
|
2927 }
|
|
|
2928
|
|
670
|
2929 if (trak->start_chunk > trak->chunks) {
|
|
|
2930 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2931 "start time is out mp4 co64 chunks in \"%s\"",
|
|
|
2932 mp4->file.name.data);
|
|
|
2933 return NGX_ERROR;
|
|
|
2934 }
|
|
|
2935
|
|
640
|
2936 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
|
2937 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
|
2938 trak->size += atom_size;
|
|
|
2939
|
|
|
2940 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
|
2941 trak->start_offset += trak->chunk_samples_size;
|
|
|
2942 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
|
2943
|
|
|
2944 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2945 "start chunk offset:%uL", trak->start_offset);
|
|
|
2946
|
|
|
2947 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
|
2948 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
|
2949
|
|
|
2950 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
|
2951 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2952
|
|
|
2953 return NGX_OK;
|
|
|
2954 }
|
|
|
2955
|
|
|
2956
|
|
|
2957 static void
|
|
|
2958 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2959 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
|
2960 {
|
|
|
2961 uint64_t offset, *entry, *end;
|
|
|
2962 ngx_buf_t *data;
|
|
|
2963
|
|
|
2964 /*
|
|
|
2965 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
|
2966 * minimal start offset of all traks and new moov atom size
|
|
|
2967 */
|
|
|
2968
|
|
|
2969 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2970 "mp4 co64 atom adjustment");
|
|
|
2971
|
|
|
2972 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2973 entry = (uint64_t *) data->pos;
|
|
|
2974 end = (uint64_t *) data->last;
|
|
|
2975
|
|
|
2976 while (entry < end) {
|
|
|
2977 offset = ngx_mp4_get_64value(entry);
|
|
|
2978 offset += adjustment;
|
|
|
2979 ngx_mp4_set_64value(entry, offset);
|
|
|
2980 entry++;
|
|
|
2981 }
|
|
|
2982 }
|
|
|
2983
|
|
|
2984
|
|
638
|
2985 static char *
|
|
|
2986 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2987 {
|
|
|
2988 ngx_http_core_loc_conf_t *clcf;
|
|
|
2989
|
|
|
2990 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
2991 clcf->handler = ngx_http_mp4_handler;
|
|
|
2992
|
|
|
2993 return NGX_CONF_OK;
|
|
|
2994 }
|
|
|
2995
|
|
|
2996
|
|
|
2997 static void *
|
|
|
2998 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
|
2999 {
|
|
|
3000 ngx_http_mp4_conf_t *conf;
|
|
|
3001
|
|
|
3002 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
|
3003 if (conf == NULL) {
|
|
|
3004 return NULL;
|
|
|
3005 }
|
|
|
3006
|
|
|
3007 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
3008 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
3009
|
|
|
3010 return conf;
|
|
|
3011 }
|
|
|
3012
|
|
|
3013
|
|
|
3014 static char *
|
|
|
3015 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
3016 {
|
|
|
3017 ngx_http_mp4_conf_t *prev = parent;
|
|
|
3018 ngx_http_mp4_conf_t *conf = child;
|
|
|
3019
|
|
|
3020 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
|
3021 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
|
3022 10 * 1024 * 1024);
|
|
|
3023
|
|
|
3024 return NGX_CONF_OK;
|
|
|
3025 }
|
