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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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640
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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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159 #define ngx_mp4_atom_next(mp4, n) mp4->buffer_pos += n; mp4->offset += n
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160
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161
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162 #define ngx_mp4_set_atom_name(p, n1, n2, n3, n4) \
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163 ((u_char *) (p))[4] = n1; \
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164 ((u_char *) (p))[5] = n2; \
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165 ((u_char *) (p))[6] = n3; \
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166 ((u_char *) (p))[7] = n4
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167
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168 #define ngx_mp4_get_32value(p) \
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658
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169 ( ((uint32_t) ((u_char *) (p))[0] << 24) \
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170 + ( ((u_char *) (p))[1] << 16) \
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171 + ( ((u_char *) (p))[2] << 8) \
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172 + ( ((u_char *) (p))[3]) )
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638
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173
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174 #define ngx_mp4_set_32value(p, n) \
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175 ((u_char *) (p))[0] = (u_char) ((n) >> 24); \
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176 ((u_char *) (p))[1] = (u_char) ((n) >> 16); \
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177 ((u_char *) (p))[2] = (u_char) ((n) >> 8); \
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178 ((u_char *) (p))[3] = (u_char) (n)
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179
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180 #define ngx_mp4_get_64value(p) \
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181 ( ((uint64_t) ((u_char *) (p))[0] << 56) \
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182 + ((uint64_t) ((u_char *) (p))[1] << 48) \
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183 + ((uint64_t) ((u_char *) (p))[2] << 40) \
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184 + ((uint64_t) ((u_char *) (p))[3] << 32) \
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185 + ((uint64_t) ((u_char *) (p))[4] << 24) \
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186 + ( ((u_char *) (p))[5] << 16) \
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187 + ( ((u_char *) (p))[6] << 8) \
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188 + ( ((u_char *) (p))[7]) )
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189
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190 #define ngx_mp4_set_64value(p, n) \
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642
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191 ((u_char *) (p))[0] = (u_char) ((uint64_t) (n) >> 56); \
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192 ((u_char *) (p))[1] = (u_char) ((uint64_t) (n) >> 48); \
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193 ((u_char *) (p))[2] = (u_char) ((uint64_t) (n) >> 40); \
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194 ((u_char *) (p))[3] = (u_char) ((uint64_t) (n) >> 32); \
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195 ((u_char *) (p))[4] = (u_char) ( (n) >> 24); \
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196 ((u_char *) (p))[5] = (u_char) ( (n) >> 16); \
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197 ((u_char *) (p))[6] = (u_char) ( (n) >> 8); \
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198 ((u_char *) (p))[7] = (u_char) (n)
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199
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200 #define ngx_mp4_last_trak(mp4) \
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201 &((ngx_http_mp4_trak_t *) mp4->trak.elts)[mp4->trak.nelts - 1]
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202
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203
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204 static ngx_int_t ngx_http_mp4_process(ngx_http_mp4_file_t *mp4);
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205 static ngx_int_t ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
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206 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size);
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207 static ngx_int_t ngx_http_mp4_read(ngx_http_mp4_file_t *mp4);
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208 static ngx_int_t ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4,
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209 uint64_t atom_data_size);
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210 static ngx_int_t ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4,
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211 uint64_t atom_data_size);
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212 static ngx_int_t ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4,
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213 uint64_t atom_data_size);
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214 static size_t ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4,
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215 off_t start_offset);
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216 static ngx_int_t ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4,
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217 uint64_t atom_data_size);
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218 static ngx_int_t ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4,
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219 uint64_t atom_data_size);
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220 static void ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
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221 ngx_http_mp4_trak_t *trak);
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222 static ngx_int_t ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4,
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223 uint64_t atom_data_size);
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224 static ngx_int_t ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4,
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225 uint64_t atom_data_size);
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226 static ngx_int_t ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4,
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227 uint64_t atom_data_size);
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228 static void ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
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229 ngx_http_mp4_trak_t *trak);
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230 static ngx_int_t ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4,
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231 uint64_t atom_data_size);
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232 static ngx_int_t ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4,
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233 uint64_t atom_data_size);
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234 static ngx_int_t ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4,
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235 uint64_t atom_data_size);
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236 static void ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
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237 ngx_http_mp4_trak_t *trak);
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238 static ngx_int_t ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4,
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239 uint64_t atom_data_size);
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240 static ngx_int_t ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4,
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241 uint64_t atom_data_size);
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242 static ngx_int_t ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4,
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243 uint64_t atom_data_size);
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244 static ngx_int_t ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4,
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245 uint64_t atom_data_size);
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246 static void ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
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247 ngx_http_mp4_trak_t *trak);
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248 static ngx_int_t ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4,
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249 uint64_t atom_data_size);
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250 static ngx_int_t ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4,
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251 uint64_t atom_data_size);
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252 static ngx_int_t ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
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253 ngx_http_mp4_trak_t *trak);
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254 static ngx_int_t ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4,
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255 uint64_t atom_data_size);
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256 static ngx_int_t ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
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257 ngx_http_mp4_trak_t *trak);
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258 static ngx_int_t ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4,
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259 uint64_t atom_data_size);
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260 static void ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
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261 ngx_http_mp4_trak_t *trak);
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262 static ngx_int_t ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4,
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263 uint64_t atom_data_size);
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264 static ngx_int_t ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
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265 ngx_http_mp4_trak_t *trak);
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266 static ngx_int_t ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4,
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267 uint64_t atom_data_size);
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268 static void ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
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269 ngx_http_mp4_trak_t *trak);
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270 static ngx_int_t ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4,
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271 uint64_t atom_data_size);
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272 static ngx_int_t ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
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273 ngx_http_mp4_trak_t *trak);
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274 static void ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
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275 ngx_http_mp4_trak_t *trak, int32_t adjustment);
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640
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276 static ngx_int_t ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4,
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277 uint64_t atom_data_size);
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278 static ngx_int_t ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
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279 ngx_http_mp4_trak_t *trak);
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280 static void ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
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281 ngx_http_mp4_trak_t *trak, off_t adjustment);
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638
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282 static char *ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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283 static void *ngx_http_mp4_create_conf(ngx_conf_t *cf);
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284 static char *ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child);
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285
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286 static ngx_command_t ngx_http_mp4_commands[] = {
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287
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288 { ngx_string("mp4"),
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289 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
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290 ngx_http_mp4,
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291 0,
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292 0,
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293 NULL },
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294
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295 { ngx_string("mp4_buffer_size"),
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296 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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297 ngx_conf_set_size_slot,
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298 NGX_HTTP_LOC_CONF_OFFSET,
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299 offsetof(ngx_http_mp4_conf_t, buffer_size),
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300 NULL },
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301
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302 { ngx_string("mp4_max_buffer_size"),
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303 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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|
|
304 ngx_conf_set_size_slot,
|
|
|
305 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
306 offsetof(ngx_http_mp4_conf_t, max_buffer_size),
|
|
|
307 NULL },
|
|
|
308
|
|
|
309 ngx_null_command
|
|
|
310 };
|
|
|
311
|
|
|
312
|
|
|
313 static ngx_http_module_t ngx_http_mp4_module_ctx = {
|
|
|
314 NULL, /* preconfiguration */
|
|
|
315 NULL, /* postconfiguration */
|
|
|
316
|
|
|
317 NULL, /* create main configuration */
|
|
|
318 NULL, /* init main configuration */
|
|
|
319
|
|
|
320 NULL, /* create server configuration */
|
|
|
321 NULL, /* merge server configuration */
|
|
|
322
|
|
|
323 ngx_http_mp4_create_conf, /* create location configuration */
|
|
|
324 ngx_http_mp4_merge_conf /* merge location configuration */
|
|
|
325 };
|
|
|
326
|
|
|
327
|
|
|
328 ngx_module_t ngx_http_mp4_module = {
|
|
|
329 NGX_MODULE_V1,
|
|
|
330 &ngx_http_mp4_module_ctx, /* module context */
|
|
|
331 ngx_http_mp4_commands, /* module directives */
|
|
|
332 NGX_HTTP_MODULE, /* module type */
|
|
|
333 NULL, /* init master */
|
|
|
334 NULL, /* init module */
|
|
|
335 NULL, /* init process */
|
|
|
336 NULL, /* init thread */
|
|
|
337 NULL, /* exit thread */
|
|
|
338 NULL, /* exit process */
|
|
|
339 NULL, /* exit master */
|
|
|
340 NGX_MODULE_V1_PADDING
|
|
|
341 };
|
|
|
342
|
|
|
343
|
|
|
344 static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = {
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|
|
345 { "ftyp", ngx_http_mp4_read_ftyp_atom },
|
|
|
346 { "moov", ngx_http_mp4_read_moov_atom },
|
|
|
347 { "mdat", ngx_http_mp4_read_mdat_atom },
|
|
|
348 { NULL, NULL }
|
|
|
349 };
|
|
|
350
|
|
|
351 static ngx_http_mp4_atom_handler_t ngx_http_mp4_moov_atoms[] = {
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|
|
352 { "mvhd", ngx_http_mp4_read_mvhd_atom },
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|
|
353 { "trak", ngx_http_mp4_read_trak_atom },
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|
|
354 { "cmov", ngx_http_mp4_read_cmov_atom },
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|
|
355 { NULL, NULL }
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|
|
356 };
|
|
|
357
|
|
|
358 static ngx_http_mp4_atom_handler_t ngx_http_mp4_trak_atoms[] = {
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|
|
359 { "tkhd", ngx_http_mp4_read_tkhd_atom },
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|
|
360 { "mdia", ngx_http_mp4_read_mdia_atom },
|
|
|
361 { NULL, NULL }
|
|
|
362 };
|
|
|
363
|
|
|
364 static ngx_http_mp4_atom_handler_t ngx_http_mp4_mdia_atoms[] = {
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|
|
365 { "mdhd", ngx_http_mp4_read_mdhd_atom },
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|
|
366 { "hdlr", ngx_http_mp4_read_hdlr_atom },
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|
|
367 { "minf", ngx_http_mp4_read_minf_atom },
|
|
|
368 { NULL, NULL }
|
|
|
369 };
|
|
|
370
|
|
|
371 static ngx_http_mp4_atom_handler_t ngx_http_mp4_minf_atoms[] = {
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|
|
372 { "vmhd", ngx_http_mp4_read_vmhd_atom },
|
|
|
373 { "smhd", ngx_http_mp4_read_smhd_atom },
|
|
|
374 { "dinf", ngx_http_mp4_read_dinf_atom },
|
|
|
375 { "stbl", ngx_http_mp4_read_stbl_atom },
|
|
|
376 { NULL, NULL }
|
|
|
377 };
|
|
|
378
|
|
|
379 static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = {
|
|
|
380 { "stsd", ngx_http_mp4_read_stsd_atom },
|
|
|
381 { "stts", ngx_http_mp4_read_stts_atom },
|
|
|
382 { "stss", ngx_http_mp4_read_stss_atom },
|
|
|
383 { "ctts", ngx_http_mp4_read_ctts_atom },
|
|
|
384 { "stsc", ngx_http_mp4_read_stsc_atom },
|
|
|
385 { "stsz", ngx_http_mp4_read_stsz_atom },
|
|
|
386 { "stco", ngx_http_mp4_read_stco_atom },
|
|
640
|
387 { "co64", ngx_http_mp4_read_co64_atom },
|
|
638
|
388 { NULL, NULL }
|
|
|
389 };
|
|
|
390
|
|
|
391
|
|
|
392 static ngx_int_t
|
|
|
393 ngx_http_mp4_handler(ngx_http_request_t *r)
|
|
|
394 {
|
|
|
395 u_char *last;
|
|
|
396 size_t root;
|
|
|
397 ngx_int_t rc, start;
|
|
|
398 ngx_uint_t level;
|
|
|
399 ngx_str_t path, value;
|
|
|
400 ngx_log_t *log;
|
|
|
401 ngx_buf_t *b;
|
|
|
402 ngx_chain_t out;
|
|
|
403 ngx_http_mp4_file_t *mp4;
|
|
|
404 ngx_open_file_info_t of;
|
|
|
405 ngx_http_core_loc_conf_t *clcf;
|
|
|
406
|
|
|
407 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
|
|
408 return NGX_HTTP_NOT_ALLOWED;
|
|
|
409 }
|
|
|
410
|
|
|
411 if (r->uri.data[r->uri.len - 1] == '/') {
|
|
|
412 return NGX_DECLINED;
|
|
|
413 }
|
|
|
414
|
|
|
415 rc = ngx_http_discard_request_body(r);
|
|
|
416
|
|
|
417 if (rc != NGX_OK) {
|
|
|
418 return rc;
|
|
|
419 }
|
|
|
420
|
|
|
421 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
422 if (last == NULL) {
|
|
|
423 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
424 }
|
|
|
425
|
|
|
426 log = r->connection->log;
|
|
|
427
|
|
|
428 path.len = last - path.data;
|
|
|
429
|
|
|
430 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
|
|
|
431 "http mp4 filename: \"%V\"", &path);
|
|
|
432
|
|
|
433 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
434
|
|
|
435 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
|
|
|
436
|
|
|
437 of.read_ahead = clcf->read_ahead;
|
|
|
438 of.directio = NGX_MAX_OFF_T_VALUE;
|
|
|
439 of.valid = clcf->open_file_cache_valid;
|
|
|
440 of.min_uses = clcf->open_file_cache_min_uses;
|
|
|
441 of.errors = clcf->open_file_cache_errors;
|
|
|
442 of.events = clcf->open_file_cache_events;
|
|
664
|
443
|
|
|
444 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
|
|
|
445 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
446 }
|
|
638
|
447
|
|
|
448 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
|
|
|
449 != NGX_OK)
|
|
|
450 {
|
|
|
451 switch (of.err) {
|
|
|
452
|
|
|
453 case 0:
|
|
|
454 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
455
|
|
|
456 case NGX_ENOENT:
|
|
|
457 case NGX_ENOTDIR:
|
|
|
458 case NGX_ENAMETOOLONG:
|
|
|
459
|
|
|
460 level = NGX_LOG_ERR;
|
|
|
461 rc = NGX_HTTP_NOT_FOUND;
|
|
|
462 break;
|
|
|
463
|
|
|
464 case NGX_EACCES:
|
|
662
|
465 #if (NGX_HAVE_OPENAT)
|
|
|
466 case NGX_EMLINK:
|
|
|
467 case NGX_ELOOP:
|
|
|
468 #endif
|
|
638
|
469
|
|
|
470 level = NGX_LOG_ERR;
|
|
|
471 rc = NGX_HTTP_FORBIDDEN;
|
|
|
472 break;
|
|
|
473
|
|
|
474 default:
|
|
|
475
|
|
|
476 level = NGX_LOG_CRIT;
|
|
|
477 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
478 break;
|
|
|
479 }
|
|
|
480
|
|
|
481 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
|
|
|
482 ngx_log_error(level, log, of.err,
|
|
|
483 "%s \"%s\" failed", of.failed, path.data);
|
|
|
484 }
|
|
|
485
|
|
|
486 return rc;
|
|
|
487 }
|
|
|
488
|
|
|
489 if (!of.is_file) {
|
|
|
490
|
|
|
491 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
|
|
|
492 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
493 ngx_close_file_n " \"%s\" failed", path.data);
|
|
|
494 }
|
|
|
495
|
|
|
496 return NGX_DECLINED;
|
|
|
497 }
|
|
|
498
|
|
|
499 r->root_tested = !r->error_page;
|
|
|
500 r->allow_ranges = 1;
|
|
|
501
|
|
|
502 start = -1;
|
|
|
503 r->headers_out.content_length_n = of.size;
|
|
|
504 mp4 = NULL;
|
|
|
505 b = NULL;
|
|
|
506
|
|
|
507 if (r->args.len) {
|
|
|
508
|
|
|
509 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
|
|
|
510
|
|
642
|
511 /*
|
|
|
512 * A Flash player may send start value with a lot of digits
|
|
|
513 * after dot so strtod() is used instead of atofp(). NaNs and
|
|
|
514 * infinities become negative numbers after (int) conversion.
|
|
|
515 */
|
|
|
516
|
|
|
517 ngx_set_errno(0);
|
|
|
518 start = (int) (strtod((char *) value.data, NULL) * 1000);
|
|
|
519
|
|
|
520 if (ngx_errno == 0 && start >= 0) {
|
|
638
|
521 r->allow_ranges = 0;
|
|
|
522
|
|
|
523 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t));
|
|
|
524 if (mp4 == NULL) {
|
|
|
525 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
526 }
|
|
|
527
|
|
|
528 mp4->file.fd = of.fd;
|
|
|
529 mp4->file.name = path;
|
|
|
530 mp4->file.log = r->connection->log;;
|
|
|
531 mp4->end = of.size;
|
|
|
532 mp4->start = (ngx_uint_t) start;
|
|
|
533 mp4->request = r;
|
|
|
534
|
|
|
535 switch (ngx_http_mp4_process(mp4)) {
|
|
|
536
|
|
|
537 case NGX_DECLINED:
|
|
|
538 if (mp4->buffer) {
|
|
|
539 ngx_pfree(r->pool, mp4->buffer);
|
|
|
540 }
|
|
|
541
|
|
|
542 ngx_pfree(r->pool, mp4);
|
|
|
543 mp4 = NULL;
|
|
|
544
|
|
|
545 break;
|
|
|
546
|
|
|
547 case NGX_OK:
|
|
|
548 r->headers_out.content_length_n = mp4->content_length;
|
|
|
549 break;
|
|
|
550
|
|
|
551 default: /* NGX_ERROR */
|
|
|
552 if (mp4->buffer) {
|
|
|
553 ngx_pfree(r->pool, mp4->buffer);
|
|
|
554 }
|
|
|
555
|
|
|
556 ngx_pfree(r->pool, mp4);
|
|
|
557
|
|
|
558 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
559 }
|
|
|
560 }
|
|
|
561 }
|
|
|
562 }
|
|
|
563
|
|
|
564 log->action = "sending mp4 to client";
|
|
|
565
|
|
|
566 if (clcf->directio <= of.size) {
|
|
|
567
|
|
|
568 /*
|
|
|
569 * DIRECTIO is set on transfer only
|
|
|
570 * to allow kernel to cache "moov" atom
|
|
|
571 */
|
|
|
572
|
|
|
573 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) {
|
|
|
574 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
575 ngx_directio_on_n " \"%s\" failed", path.data);
|
|
|
576 }
|
|
|
577
|
|
|
578 of.is_directio = 1;
|
|
|
579
|
|
|
580 if (mp4) {
|
|
|
581 mp4->file.directio = 1;
|
|
|
582 }
|
|
|
583 }
|
|
|
584
|
|
|
585 r->headers_out.status = NGX_HTTP_OK;
|
|
|
586 r->headers_out.last_modified_time = of.mtime;
|
|
|
587
|
|
|
588 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
|
589 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
590 }
|
|
|
591
|
|
|
592 if (mp4 == NULL) {
|
|
|
593 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
594 if (b == NULL) {
|
|
|
595 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
596 }
|
|
|
597
|
|
|
598 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
599 if (b->file == NULL) {
|
|
|
600 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
601 }
|
|
|
602 }
|
|
|
603
|
|
|
604 rc = ngx_http_send_header(r);
|
|
|
605
|
|
|
606 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
607 return rc;
|
|
|
608 }
|
|
|
609
|
|
|
610 if (mp4) {
|
|
|
611 return ngx_http_output_filter(r, mp4->out);
|
|
|
612 }
|
|
|
613
|
|
|
614 b->file_pos = 0;
|
|
|
615 b->file_last = of.size;
|
|
|
616
|
|
|
617 b->in_file = b->file_last ? 1 : 0;
|
|
|
618 b->last_buf = 1;
|
|
|
619 b->last_in_chain = 1;
|
|
|
620
|
|
|
621 b->file->fd = of.fd;
|
|
|
622 b->file->name = path;
|
|
|
623 b->file->log = log;
|
|
|
624 b->file->directio = of.is_directio;
|
|
|
625
|
|
|
626 out.buf = b;
|
|
|
627 out.next = NULL;
|
|
|
628
|
|
|
629 return ngx_http_output_filter(r, &out);
|
|
|
630 }
|
|
|
631
|
|
|
632
|
|
|
633 static ngx_int_t
|
|
|
634 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
|
635 {
|
|
|
636 off_t start_offset, adjustment;
|
|
|
637 ngx_int_t rc;
|
|
|
638 ngx_uint_t i, j;
|
|
|
639 ngx_chain_t **prev;
|
|
|
640 ngx_http_mp4_trak_t *trak;
|
|
|
641 ngx_http_mp4_conf_t *conf;
|
|
|
642
|
|
|
643 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
644 "mp4 start:%ui", mp4->start);
|
|
|
645
|
|
|
646 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
647
|
|
|
648 mp4->buffer_size = conf->buffer_size;
|
|
|
649
|
|
|
650 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
|
651 if (rc != NGX_OK) {
|
|
|
652 return rc;
|
|
|
653 }
|
|
|
654
|
|
|
655 if (mp4->trak.nelts == 0) {
|
|
|
656 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
657 "no mp4 trak atoms were found in \"%s\"",
|
|
|
658 mp4->file.name.data);
|
|
|
659 return NGX_ERROR;
|
|
|
660 }
|
|
|
661
|
|
|
662 if (mp4->mdat_atom.buf == NULL) {
|
|
|
663 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
664 "no mp4 mdat atom was found in \"%s\"",
|
|
|
665 mp4->file.name.data);
|
|
|
666 return NGX_ERROR;
|
|
|
667 }
|
|
|
668
|
|
|
669 prev = &mp4->out;
|
|
|
670
|
|
|
671 if (mp4->ftyp_atom.buf) {
|
|
|
672 *prev = &mp4->ftyp_atom;
|
|
|
673 prev = &mp4->ftyp_atom.next;
|
|
|
674 }
|
|
|
675
|
|
|
676 *prev = &mp4->moov_atom;
|
|
|
677 prev = &mp4->moov_atom.next;
|
|
|
678
|
|
|
679 if (mp4->mvhd_atom.buf) {
|
|
|
680 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
|
681 *prev = &mp4->mvhd_atom;
|
|
|
682 prev = &mp4->mvhd_atom.next;
|
|
|
683 }
|
|
|
684
|
|
|
685 start_offset = mp4->end;
|
|
|
686 trak = mp4->trak.elts;
|
|
|
687
|
|
|
688 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
|
689
|
|
|
690 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
691 return NGX_ERROR;
|
|
|
692 }
|
|
|
693
|
|
|
694 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
695 return NGX_ERROR;
|
|
|
696 }
|
|
|
697
|
|
|
698 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
|
699
|
|
|
700 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
701 return NGX_ERROR;
|
|
|
702 }
|
|
|
703
|
|
|
704 ngx_http_mp4_update_stsz_atom(mp4, &trak[i]);
|
|
|
705
|
|
640
|
706 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
707 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
708 return NGX_ERROR;
|
|
|
709 }
|
|
|
710
|
|
|
711 } else {
|
|
|
712 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
713 return NGX_ERROR;
|
|
|
714 }
|
|
638
|
715 }
|
|
|
716
|
|
|
717 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
|
718 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
|
719 trak[i].size += trak[i].mdhd_size;
|
|
|
720 trak[i].size += trak[i].hdlr_size;
|
|
|
721 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
|
722 trak[i].size += trak[i].tkhd_size;
|
|
|
723 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
|
724
|
|
|
725 mp4->moov_size += trak[i].size;
|
|
|
726
|
|
|
727 if (start_offset > trak[i].start_offset) {
|
|
|
728 start_offset = trak[i].start_offset;
|
|
|
729 }
|
|
|
730
|
|
|
731 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
|
732 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
|
733
|
|
|
734 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
|
735 if (trak[i].out[j].buf) {
|
|
|
736 *prev = &trak[i].out[j];
|
|
|
737 prev = &trak[i].out[j].next;
|
|
|
738 }
|
|
|
739 }
|
|
|
740 }
|
|
|
741
|
|
|
742 mp4->moov_size += 8;
|
|
|
743
|
|
|
744 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
|
745 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
|
746 mp4->content_length += mp4->moov_size;
|
|
|
747
|
|
|
748 *prev = &mp4->mdat_atom;
|
|
|
749
|
|
|
750 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
|
751 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
|
752 - start_offset;
|
|
|
753
|
|
|
754 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
755 "mp4 adjustment:%D", adjustment);
|
|
|
756
|
|
|
757 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
640
|
758 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
759 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
|
760 } else {
|
|
|
761 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
|
762 }
|
|
638
|
763 }
|
|
|
764
|
|
|
765 return NGX_OK;
|
|
|
766 }
|
|
|
767
|
|
|
768
|
|
|
769 typedef struct {
|
|
|
770 u_char size[4];
|
|
|
771 u_char name[4];
|
|
|
772 } ngx_mp4_atom_header_t;
|
|
|
773
|
|
|
774 typedef struct {
|
|
|
775 u_char size[4];
|
|
|
776 u_char name[4];
|
|
|
777 u_char size64[8];
|
|
|
778 } ngx_mp4_atom_header64_t;
|
|
|
779
|
|
|
780
|
|
|
781 static ngx_int_t
|
|
|
782 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
|
783 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
|
784 {
|
|
|
785 off_t end;
|
|
|
786 size_t atom_header_size;
|
|
|
787 u_char *atom_header, *atom_name;
|
|
|
788 uint64_t atom_size;
|
|
|
789 ngx_int_t rc;
|
|
|
790 ngx_uint_t n;
|
|
|
791
|
|
|
792 end = mp4->offset + atom_data_size;
|
|
|
793
|
|
|
794 while (mp4->offset < end) {
|
|
|
795
|
|
|
796 if (mp4->buffer_pos + sizeof(uint32_t) > mp4->buffer_end) {
|
|
|
797 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
798 return NGX_ERROR;
|
|
|
799 }
|
|
|
800 }
|
|
|
801
|
|
|
802 atom_header = mp4->buffer_pos;
|
|
|
803 atom_size = ngx_mp4_get_32value(atom_header);
|
|
|
804 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
805
|
|
|
806 if (atom_size == 0) {
|
|
|
807 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
808 "mp4 atom end");
|
|
|
809 return NGX_OK;
|
|
|
810 }
|
|
|
811
|
|
|
812 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
|
813
|
|
|
814 if (atom_size == 1) {
|
|
|
815
|
|
|
816 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header64_t)
|
|
|
817 > mp4->buffer_end)
|
|
|
818 {
|
|
|
819 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
820 return NGX_ERROR;
|
|
|
821 }
|
|
|
822
|
|
|
823 atom_header = mp4->buffer_pos;
|
|
|
824 }
|
|
|
825
|
|
|
826 /* 64-bit atom size */
|
|
|
827 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
|
828 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
829
|
|
|
830 } else {
|
|
|
831 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
832 "\"%s\" mp4 atom is too small:%uL",
|
|
|
833 mp4->file.name.data, atom_size);
|
|
|
834 return NGX_ERROR;
|
|
|
835 }
|
|
|
836 }
|
|
|
837
|
|
|
838 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header_t) > mp4->buffer_end) {
|
|
|
839 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
840 return NGX_ERROR;
|
|
|
841 }
|
|
|
842
|
|
|
843 atom_header = mp4->buffer_pos;
|
|
|
844 }
|
|
|
845
|
|
|
846 atom_name = atom_header + sizeof(uint32_t);
|
|
|
847
|
|
|
848 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
849 "mp4 atom: %*s @%O:%uL",
|
|
|
850 4, atom_name, mp4->offset, atom_size);
|
|
|
851
|
|
|
852 for (n = 0; atom[n].name; n++) {
|
|
|
853
|
|
|
854 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
|
855
|
|
|
856 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
|
857
|
|
|
858 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
|
859 if (rc != NGX_OK) {
|
|
|
860 return rc;
|
|
|
861 }
|
|
|
862
|
|
|
863 goto next;
|
|
|
864 }
|
|
|
865 }
|
|
|
866
|
|
|
867 ngx_mp4_atom_next(mp4, atom_size);
|
|
|
868
|
|
|
869 next:
|
|
|
870 continue;
|
|
|
871 }
|
|
|
872
|
|
|
873 return NGX_OK;
|
|
|
874 }
|
|
|
875
|
|
|
876
|
|
|
877 static ngx_int_t
|
|
|
878 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4)
|
|
|
879 {
|
|
|
880 ngx_int_t n;
|
|
|
881
|
|
|
882 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
|
883 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
|
884 }
|
|
|
885
|
|
|
886 if (mp4->buffer == NULL) {
|
|
|
887 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
|
888 if (mp4->buffer == NULL) {
|
|
|
889 return NGX_ERROR;
|
|
|
890 }
|
|
|
891
|
|
|
892 mp4->buffer_start = mp4->buffer;
|
|
|
893 mp4->buffer_end = mp4->buffer + mp4->buffer_size;
|
|
|
894 }
|
|
|
895
|
|
|
896 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
|
897 mp4->offset);
|
|
|
898
|
|
|
899 if (n == NGX_ERROR) {
|
|
|
900 return NGX_ERROR;
|
|
|
901 }
|
|
|
902
|
|
|
903 if (n == 0) {
|
|
|
904 return NGX_OK;
|
|
|
905 }
|
|
|
906
|
|
|
907 mp4->buffer_pos = mp4->buffer_start;
|
|
|
908
|
|
|
909 return NGX_OK;
|
|
|
910 }
|
|
|
911
|
|
|
912
|
|
|
913 static ngx_int_t
|
|
|
914 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
915 {
|
|
|
916 u_char *ftyp_atom;
|
|
|
917 size_t atom_size;
|
|
|
918 ngx_buf_t *atom;
|
|
|
919
|
|
|
920 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
|
921
|
|
|
922 if (atom_data_size > 1024) {
|
|
|
923 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
924 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
|
925 mp4->file.name.data, atom_data_size);
|
|
|
926 return NGX_ERROR;
|
|
|
927 }
|
|
|
928
|
|
|
929 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
930
|
|
|
931 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
|
932 if (ftyp_atom == NULL) {
|
|
|
933 return NGX_ERROR;
|
|
|
934 }
|
|
|
935
|
|
|
936 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
|
937 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
|
938
|
|
|
939 /*
|
|
|
940 * only moov atom content is guaranteed to be in mp4->buffer
|
|
|
941 * during sending response, so ftyp atom content should be copied
|
|
|
942 */
|
|
|
943 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
|
944 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
|
945
|
|
|
946 atom = &mp4->ftyp_atom_buf;
|
|
|
947 atom->temporary = 1;
|
|
|
948 atom->pos = ftyp_atom;
|
|
|
949 atom->last = ftyp_atom + atom_size;
|
|
|
950
|
|
|
951 mp4->ftyp_atom.buf = atom;
|
|
|
952 mp4->ftyp_size = atom_size;
|
|
|
953 mp4->content_length = atom_size;
|
|
|
954
|
|
|
955 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
956
|
|
|
957 return NGX_OK;
|
|
|
958 }
|
|
|
959
|
|
|
960
|
|
|
961 /*
|
|
|
962 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
|
963 * will be set to this buffer part after moov atom processing.
|
|
|
964 */
|
|
|
965 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
|
966
|
|
|
967 static ngx_int_t
|
|
|
968 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
969 {
|
|
|
970 ngx_int_t rc;
|
|
|
971 ngx_uint_t no_mdat;
|
|
|
972 ngx_buf_t *atom;
|
|
|
973 ngx_http_mp4_conf_t *conf;
|
|
|
974
|
|
|
975 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
|
976
|
|
|
977 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
|
978
|
|
|
979 if (no_mdat && mp4->start == 0) {
|
|
|
980 /*
|
|
|
981 * send original file if moov atom resides before
|
|
|
982 * mdat atom and client requests integral file
|
|
|
983 */
|
|
|
984 return NGX_DECLINED;
|
|
|
985 }
|
|
|
986
|
|
|
987 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
988
|
|
|
989 if (atom_data_size > mp4->buffer_size) {
|
|
|
990
|
|
|
991 if (atom_data_size > conf->max_buffer_size) {
|
|
|
992 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
993 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
|
994 "you may want to increase mp4_max_buffer_size",
|
|
|
995 mp4->file.name.data, atom_data_size);
|
|
|
996 return NGX_ERROR;
|
|
|
997 }
|
|
|
998
|
|
|
999 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
|
1000 mp4->buffer = NULL;
|
|
|
1001 mp4->buffer_pos = NULL;
|
|
|
1002 mp4->buffer_end = NULL;
|
|
|
1003
|
|
|
1004 mp4->buffer_size = (size_t) atom_data_size
|
|
|
1005 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 mp4->trak.elts = &mp4->traks;
|
|
|
1009 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
|
1010 mp4->trak.nalloc = 2;
|
|
|
1011 mp4->trak.pool = mp4->request->pool;
|
|
|
1012
|
|
|
1013 atom = &mp4->moov_atom_buf;
|
|
|
1014 atom->temporary = 1;
|
|
|
1015 atom->pos = mp4->moov_atom_header;
|
|
|
1016 atom->last = mp4->moov_atom_header + 8;
|
|
|
1017
|
|
|
1018 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
|
1019
|
|
|
1020 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
|
1021
|
|
|
1022 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
|
1023
|
|
|
1024 if (no_mdat) {
|
|
|
1025 mp4->buffer_start = mp4->buffer_pos;
|
|
|
1026 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
|
1027
|
|
|
1028 } else {
|
|
|
1029 /* skip atoms after moov atom */
|
|
|
1030 mp4->offset = mp4->end;
|
|
|
1031 }
|
|
|
1032
|
|
|
1033 return rc;
|
|
|
1034 }
|
|
|
1035
|
|
|
1036
|
|
|
1037 static ngx_int_t
|
|
|
1038 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1039 {
|
|
|
1040 ngx_buf_t *data;
|
|
|
1041
|
|
|
1042 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
|
1043
|
|
|
1044 data = &mp4->mdat_data_buf;
|
|
|
1045 data->file = &mp4->file;
|
|
|
1046 data->in_file = 1;
|
|
|
1047 data->last_buf = 1;
|
|
|
1048 data->last_in_chain = 1;
|
|
|
1049 data->file_last = mp4->offset + atom_data_size;
|
|
|
1050
|
|
|
1051 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
|
1052 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
|
1053 mp4->mdat_data.buf = data;
|
|
|
1054
|
|
|
1055 if (mp4->trak.nelts) {
|
|
|
1056 /* skip atoms after mdat atom */
|
|
|
1057 mp4->offset = mp4->end;
|
|
|
1058
|
|
|
1059 } else {
|
|
|
1060 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 return NGX_OK;
|
|
|
1064 }
|
|
|
1065
|
|
|
1066
|
|
|
1067 static size_t
|
|
|
1068 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
|
1069 {
|
|
|
1070 off_t atom_data_size;
|
|
|
1071 u_char *atom_header;
|
|
|
1072 uint32_t atom_header_size;
|
|
|
1073 uint64_t atom_size;
|
|
|
1074 ngx_buf_t *atom;
|
|
|
1075
|
|
|
1076 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
|
1077 mp4->mdat_data.buf->file_pos = start_offset;
|
|
|
1078
|
|
|
1079 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1080 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
|
1081
|
|
|
1082 atom_header = mp4->mdat_atom_header;
|
|
|
1083
|
|
642
|
1084 if ((uint64_t) atom_data_size > 0xffffffff) {
|
|
638
|
1085 atom_size = 1;
|
|
|
1086 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
1087 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
|
1088 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
|
1089 } else {
|
|
|
1090 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
|
1091 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
1092 }
|
|
|
1093
|
|
648
|
1094 mp4->content_length += atom_header_size + atom_data_size;
|
|
|
1095
|
|
638
|
1096 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1097 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
|
1098
|
|
|
1099 atom = &mp4->mdat_atom_buf;
|
|
|
1100 atom->temporary = 1;
|
|
|
1101 atom->pos = atom_header;
|
|
|
1102 atom->last = atom_header + atom_header_size;
|
|
|
1103
|
|
|
1104 return atom_header_size;
|
|
|
1105 }
|
|
|
1106
|
|
|
1107
|
|
|
1108 typedef struct {
|
|
|
1109 u_char size[4];
|
|
|
1110 u_char name[4];
|
|
|
1111 u_char version[1];
|
|
|
1112 u_char flags[3];
|
|
|
1113 u_char creation_time[4];
|
|
|
1114 u_char modification_time[4];
|
|
|
1115 u_char timescale[4];
|
|
|
1116 u_char duration[4];
|
|
|
1117 u_char rate[4];
|
|
|
1118 u_char volume[2];
|
|
|
1119 u_char reserved[10];
|
|
|
1120 u_char matrix[36];
|
|
|
1121 u_char preview_time[4];
|
|
|
1122 u_char preview_duration[4];
|
|
|
1123 u_char poster_time[4];
|
|
|
1124 u_char selection_time[4];
|
|
|
1125 u_char selection_duration[4];
|
|
|
1126 u_char current_time[4];
|
|
|
1127 u_char next_track_id[4];
|
|
|
1128 } ngx_mp4_mvhd_atom_t;
|
|
|
1129
|
|
|
1130 typedef struct {
|
|
|
1131 u_char size[4];
|
|
|
1132 u_char name[4];
|
|
|
1133 u_char version[1];
|
|
|
1134 u_char flags[3];
|
|
|
1135 u_char creation_time[8];
|
|
|
1136 u_char modification_time[8];
|
|
|
1137 u_char timescale[4];
|
|
|
1138 u_char duration[8];
|
|
|
1139 u_char rate[4];
|
|
|
1140 u_char volume[2];
|
|
|
1141 u_char reserved[10];
|
|
|
1142 u_char matrix[36];
|
|
|
1143 u_char preview_time[4];
|
|
|
1144 u_char preview_duration[4];
|
|
|
1145 u_char poster_time[4];
|
|
|
1146 u_char selection_time[4];
|
|
|
1147 u_char selection_duration[4];
|
|
|
1148 u_char current_time[4];
|
|
|
1149 u_char next_track_id[4];
|
|
|
1150 } ngx_mp4_mvhd64_atom_t;
|
|
|
1151
|
|
|
1152
|
|
|
1153 static ngx_int_t
|
|
|
1154 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1155 {
|
|
|
1156 u_char *atom_header;
|
|
|
1157 size_t atom_size;
|
|
|
1158 uint32_t timescale;
|
|
|
1159 uint64_t duration;
|
|
|
1160 ngx_buf_t *atom;
|
|
|
1161 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
|
1162 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
|
1163
|
|
|
1164 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
|
1165
|
|
|
1166 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1167 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
|
1168 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
|
1169 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
|
1170
|
|
|
1171 if (mvhd_atom->version[0] == 0) {
|
|
|
1172 /* version 0: 32-bit duration */
|
|
|
1173 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
|
1174 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
|
1175
|
|
|
1176 } else {
|
|
|
1177 /* version 1: 64-bit duration */
|
|
|
1178 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
|
1179 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
|
1180 }
|
|
|
1181
|
|
|
1182 mp4->timescale = timescale;
|
|
|
1183
|
|
|
1184 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1185 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1186 timescale, duration, (double) duration / timescale);
|
|
|
1187
|
|
|
1188 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1189
|
|
|
1190 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1191 "mvhd new duration:%uL, time:%.3fs",
|
|
|
1192 duration, (double) duration / timescale);
|
|
|
1193
|
|
|
1194 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1195 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
|
1196
|
|
|
1197 if (mvhd_atom->version[0] == 0) {
|
|
|
1198 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
|
1199
|
|
|
1200 } else {
|
|
|
1201 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
|
1202 }
|
|
|
1203
|
|
|
1204 atom = &mp4->mvhd_atom_buf;
|
|
|
1205 atom->temporary = 1;
|
|
|
1206 atom->pos = atom_header;
|
|
|
1207 atom->last = atom_header + atom_size;
|
|
|
1208
|
|
|
1209 mp4->mvhd_atom.buf = atom;
|
|
|
1210
|
|
|
1211 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1212
|
|
|
1213 return NGX_OK;
|
|
|
1214 }
|
|
|
1215
|
|
|
1216
|
|
|
1217 static ngx_int_t
|
|
|
1218 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1219 {
|
|
|
1220 u_char *atom_header, *atom_end;
|
|
|
1221 off_t atom_file_end;
|
|
|
1222 ngx_int_t rc;
|
|
|
1223 ngx_buf_t *atom;
|
|
|
1224 ngx_http_mp4_trak_t *trak;
|
|
|
1225
|
|
|
1226 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
|
1227
|
|
|
1228 trak = ngx_array_push(&mp4->trak);
|
|
|
1229 if (trak == NULL) {
|
|
|
1230 return NGX_ERROR;
|
|
|
1231 }
|
|
|
1232
|
|
|
1233 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1234
|
|
|
1235 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1236 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
|
1237
|
|
|
1238 atom = &trak->trak_atom_buf;
|
|
|
1239 atom->temporary = 1;
|
|
|
1240 atom->pos = atom_header;
|
|
|
1241 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1242
|
|
|
1243 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
|
1244
|
|
|
1245 atom_end = mp4->buffer_pos + atom_data_size;
|
|
|
1246 atom_file_end = mp4->offset + atom_data_size;
|
|
|
1247
|
|
|
1248 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
|
1249
|
|
|
1250 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1251 "mp4 trak atom: %i", rc);
|
|
|
1252
|
|
|
1253 if (rc == NGX_DECLINED) {
|
|
|
1254 /* skip this trak */
|
|
|
1255 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1256 mp4->trak.nelts--;
|
|
|
1257 mp4->buffer_pos = atom_end;
|
|
|
1258 mp4->offset = atom_file_end;
|
|
|
1259 return NGX_OK;
|
|
|
1260 }
|
|
|
1261
|
|
|
1262 return rc;
|
|
|
1263 }
|
|
|
1264
|
|
|
1265
|
|
|
1266 static void
|
|
|
1267 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1268 ngx_http_mp4_trak_t *trak)
|
|
|
1269 {
|
|
|
1270 ngx_buf_t *atom;
|
|
|
1271
|
|
|
1272 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1273 atom = &trak->trak_atom_buf;
|
|
|
1274 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1275 }
|
|
|
1276
|
|
|
1277
|
|
|
1278 static ngx_int_t
|
|
|
1279 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1280 {
|
|
|
1281 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1282 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
|
1283 mp4->file.name.data);
|
|
|
1284
|
|
|
1285 return NGX_ERROR;
|
|
|
1286 }
|
|
|
1287
|
|
|
1288
|
|
|
1289 typedef struct {
|
|
|
1290 u_char size[4];
|
|
|
1291 u_char name[4];
|
|
|
1292 u_char version[1];
|
|
|
1293 u_char flags[3];
|
|
|
1294 u_char creation_time[4];
|
|
|
1295 u_char modification_time[4];
|
|
|
1296 u_char track_id[4];
|
|
|
1297 u_char reserved1[4];
|
|
|
1298 u_char duration[4];
|
|
|
1299 u_char reserved2[8];
|
|
|
1300 u_char layer[2];
|
|
|
1301 u_char group[2];
|
|
|
1302 u_char volume[2];
|
|
|
1303 u_char reverved3[2];
|
|
|
1304 u_char matrix[36];
|
|
|
1305 u_char width[4];
|
|
|
1306 u_char heigth[4];
|
|
|
1307 } ngx_mp4_tkhd_atom_t;
|
|
|
1308
|
|
|
1309 typedef struct {
|
|
|
1310 u_char size[4];
|
|
|
1311 u_char name[4];
|
|
|
1312 u_char version[1];
|
|
|
1313 u_char flags[3];
|
|
|
1314 u_char creation_time[8];
|
|
|
1315 u_char modification_time[8];
|
|
|
1316 u_char track_id[4];
|
|
|
1317 u_char reserved1[4];
|
|
|
1318 u_char duration[8];
|
|
|
1319 u_char reserved2[8];
|
|
|
1320 u_char layer[2];
|
|
|
1321 u_char group[2];
|
|
|
1322 u_char volume[2];
|
|
|
1323 u_char reverved3[2];
|
|
|
1324 u_char matrix[36];
|
|
|
1325 u_char width[4];
|
|
|
1326 u_char heigth[4];
|
|
|
1327 } ngx_mp4_tkhd64_atom_t;
|
|
|
1328
|
|
|
1329
|
|
|
1330 static ngx_int_t
|
|
|
1331 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1332 {
|
|
|
1333 u_char *atom_header;
|
|
|
1334 size_t atom_size;
|
|
|
1335 uint64_t duration;
|
|
|
1336 ngx_buf_t *atom;
|
|
|
1337 ngx_http_mp4_trak_t *trak;
|
|
|
1338 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
|
1339 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
|
1340
|
|
|
1341 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
|
1342
|
|
|
1343 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1344 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
|
1345 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
|
1346 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
|
1347
|
|
|
1348 if (tkhd_atom->version[0] == 0) {
|
|
|
1349 /* version 0: 32-bit duration */
|
|
|
1350 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
|
1351
|
|
|
1352 } else {
|
|
|
1353 /* version 1: 64-bit duration */
|
|
|
1354 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
|
1355 }
|
|
|
1356
|
|
|
1357 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1358 "tkhd duration:%uL, time:%.3fs",
|
|
|
1359 duration, (double) duration / mp4->timescale);
|
|
|
1360
|
|
|
1361 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
|
1362
|
|
|
1363 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1364 "tkhd new duration:%uL, time:%.3fs",
|
|
|
1365 duration, (double) duration / mp4->timescale);
|
|
|
1366
|
|
|
1367 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1368
|
|
|
1369 trak = ngx_mp4_last_trak(mp4);
|
|
|
1370 trak->tkhd_size = atom_size;
|
|
|
1371
|
|
|
1372 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
|
1373
|
|
|
1374 if (tkhd_atom->version[0] == 0) {
|
|
|
1375 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
|
1376
|
|
|
1377 } else {
|
|
|
1378 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
|
1379 }
|
|
|
1380
|
|
|
1381 atom = &trak->tkhd_atom_buf;
|
|
|
1382 atom->temporary = 1;
|
|
|
1383 atom->pos = atom_header;
|
|
|
1384 atom->last = atom_header + atom_size;
|
|
|
1385
|
|
|
1386 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
|
1387
|
|
|
1388 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1389
|
|
|
1390 return NGX_OK;
|
|
|
1391 }
|
|
|
1392
|
|
|
1393
|
|
|
1394 static ngx_int_t
|
|
|
1395 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1396 {
|
|
|
1397 u_char *atom_header;
|
|
|
1398 ngx_buf_t *atom;
|
|
|
1399 ngx_http_mp4_trak_t *trak;
|
|
|
1400
|
|
|
1401 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
|
1402
|
|
|
1403 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1404 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
|
1405
|
|
|
1406 trak = ngx_mp4_last_trak(mp4);
|
|
|
1407
|
|
|
1408 atom = &trak->mdia_atom_buf;
|
|
|
1409 atom->temporary = 1;
|
|
|
1410 atom->pos = atom_header;
|
|
|
1411 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1412
|
|
|
1413 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
|
1414
|
|
|
1415 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
|
1416 }
|
|
|
1417
|
|
|
1418
|
|
|
1419 static void
|
|
|
1420 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1421 ngx_http_mp4_trak_t *trak)
|
|
|
1422 {
|
|
|
1423 ngx_buf_t *atom;
|
|
|
1424
|
|
|
1425 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1426 atom = &trak->mdia_atom_buf;
|
|
|
1427 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1428 }
|
|
|
1429
|
|
|
1430
|
|
|
1431 typedef struct {
|
|
|
1432 u_char size[4];
|
|
|
1433 u_char name[4];
|
|
|
1434 u_char version[1];
|
|
|
1435 u_char flags[3];
|
|
|
1436 u_char creation_time[4];
|
|
|
1437 u_char modification_time[4];
|
|
|
1438 u_char timescale[4];
|
|
|
1439 u_char duration[4];
|
|
|
1440 u_char language[2];
|
|
|
1441 u_char quality[2];
|
|
|
1442 } ngx_mp4_mdhd_atom_t;
|
|
|
1443
|
|
|
1444 typedef struct {
|
|
|
1445 u_char size[4];
|
|
|
1446 u_char name[4];
|
|
|
1447 u_char version[1];
|
|
|
1448 u_char flags[3];
|
|
|
1449 u_char creation_time[8];
|
|
|
1450 u_char modification_time[8];
|
|
|
1451 u_char timescale[4];
|
|
|
1452 u_char duration[8];
|
|
|
1453 u_char language[2];
|
|
|
1454 u_char quality[2];
|
|
|
1455 } ngx_mp4_mdhd64_atom_t;
|
|
|
1456
|
|
|
1457
|
|
|
1458 static ngx_int_t
|
|
|
1459 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1460 {
|
|
|
1461 u_char *atom_header;
|
|
|
1462 size_t atom_size;
|
|
|
1463 uint32_t timescale;
|
|
|
1464 uint64_t duration;
|
|
|
1465 ngx_buf_t *atom;
|
|
|
1466 ngx_http_mp4_trak_t *trak;
|
|
|
1467 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
|
1468 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
|
1469
|
|
|
1470 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
|
1471
|
|
|
1472 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1473 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
|
1474 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
|
1475 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
|
1476
|
|
|
1477 if (mdhd_atom->version[0] == 0) {
|
|
|
1478 /* version 0: everything is 32-bit */
|
|
|
1479 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
|
1480 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
|
1481
|
|
|
1482 } else {
|
|
|
1483 /* version 1: 64-bit duration and 32-bit timescale */
|
|
|
1484 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
|
1485 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
|
1486 }
|
|
|
1487
|
|
|
1488 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1489 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1490 timescale, duration, (double) duration / timescale);
|
|
|
1491
|
|
|
1492 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1493
|
|
|
1494 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1495 "mdhd new duration:%uL, time:%.3fs",
|
|
|
1496 duration, (double) duration / timescale);
|
|
|
1497
|
|
|
1498 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1499
|
|
|
1500 trak = ngx_mp4_last_trak(mp4);
|
|
|
1501 trak->mdhd_size = atom_size;
|
|
|
1502 trak->timescale = timescale;
|
|
|
1503
|
|
|
1504 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
|
1505
|
|
|
1506 if (mdhd_atom->version[0] == 0) {
|
|
|
1507 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
|
1508
|
|
|
1509 } else {
|
|
|
1510 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
|
1511 }
|
|
|
1512
|
|
|
1513 atom = &trak->mdhd_atom_buf;
|
|
|
1514 atom->temporary = 1;
|
|
|
1515 atom->pos = atom_header;
|
|
|
1516 atom->last = atom_header + atom_size;
|
|
|
1517
|
|
|
1518 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
|
1519
|
|
|
1520 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1521
|
|
|
1522 return NGX_OK;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525
|
|
|
1526 static ngx_int_t
|
|
|
1527 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1528 {
|
|
|
1529 u_char *atom_header;
|
|
|
1530 size_t atom_size;
|
|
|
1531 ngx_buf_t *atom;
|
|
|
1532 ngx_http_mp4_trak_t *trak;
|
|
|
1533
|
|
|
1534 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
|
1535
|
|
|
1536 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1537 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1538 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1539 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
|
1540
|
|
|
1541 trak = ngx_mp4_last_trak(mp4);
|
|
|
1542
|
|
|
1543 atom = &trak->hdlr_atom_buf;
|
|
|
1544 atom->temporary = 1;
|
|
|
1545 atom->pos = atom_header;
|
|
|
1546 atom->last = atom_header + atom_size;
|
|
|
1547
|
|
|
1548 trak->hdlr_size = atom_size;
|
|
|
1549 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
|
1550
|
|
|
1551 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1552
|
|
|
1553 return NGX_OK;
|
|
|
1554 }
|
|
|
1555
|
|
|
1556
|
|
|
1557 static ngx_int_t
|
|
|
1558 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1559 {
|
|
|
1560 u_char *atom_header;
|
|
|
1561 ngx_buf_t *atom;
|
|
|
1562 ngx_http_mp4_trak_t *trak;
|
|
|
1563
|
|
|
1564 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
|
1565
|
|
|
1566 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1567 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
|
1568
|
|
|
1569 trak = ngx_mp4_last_trak(mp4);
|
|
|
1570
|
|
|
1571 atom = &trak->minf_atom_buf;
|
|
|
1572 atom->temporary = 1;
|
|
|
1573 atom->pos = atom_header;
|
|
|
1574 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1575
|
|
|
1576 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
|
1577
|
|
|
1578 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
|
1579 }
|
|
|
1580
|
|
|
1581
|
|
|
1582 static void
|
|
|
1583 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1584 ngx_http_mp4_trak_t *trak)
|
|
|
1585 {
|
|
|
1586 ngx_buf_t *atom;
|
|
|
1587
|
|
|
1588 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
|
1589 + trak->vmhd_size
|
|
|
1590 + trak->smhd_size
|
|
|
1591 + trak->dinf_size;
|
|
|
1592 atom = &trak->minf_atom_buf;
|
|
|
1593 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1594 }
|
|
|
1595
|
|
|
1596
|
|
|
1597 static ngx_int_t
|
|
|
1598 ngx_http_mp4_read_vmhd_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 vmhd 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, 'v', 'm', 'h', 'd');
|
|
|
1611
|
|
|
1612 trak = ngx_mp4_last_trak(mp4);
|
|
|
1613
|
|
|
1614 atom = &trak->vmhd_atom_buf;
|
|
|
1615 atom->temporary = 1;
|
|
|
1616 atom->pos = atom_header;
|
|
|
1617 atom->last = atom_header + atom_size;
|
|
|
1618
|
|
|
1619 trak->vmhd_size += atom_size;
|
|
|
1620 trak->out[NGX_HTTP_MP4_VMHD_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_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1630 {
|
|
|
1631 u_char *atom_header;
|
|
|
1632 size_t atom_size;
|
|
|
1633 ngx_buf_t *atom;
|
|
|
1634 ngx_http_mp4_trak_t *trak;
|
|
|
1635
|
|
|
1636 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
|
1637
|
|
|
1638 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1639 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1640 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1641 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
|
1642
|
|
|
1643 trak = ngx_mp4_last_trak(mp4);
|
|
|
1644
|
|
|
1645 atom = &trak->smhd_atom_buf;
|
|
|
1646 atom->temporary = 1;
|
|
|
1647 atom->pos = atom_header;
|
|
|
1648 atom->last = atom_header + atom_size;
|
|
|
1649
|
|
|
1650 trak->vmhd_size += atom_size;
|
|
|
1651 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
|
1652
|
|
|
1653 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1654
|
|
|
1655 return NGX_OK;
|
|
|
1656 }
|
|
|
1657
|
|
|
1658
|
|
|
1659 static ngx_int_t
|
|
|
1660 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1661 {
|
|
|
1662 u_char *atom_header;
|
|
|
1663 size_t atom_size;
|
|
|
1664 ngx_buf_t *atom;
|
|
|
1665 ngx_http_mp4_trak_t *trak;
|
|
|
1666
|
|
|
1667 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
|
1668
|
|
|
1669 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1670 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1671 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1672 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
|
1673
|
|
|
1674 trak = ngx_mp4_last_trak(mp4);
|
|
|
1675
|
|
|
1676 atom = &trak->dinf_atom_buf;
|
|
|
1677 atom->temporary = 1;
|
|
|
1678 atom->pos = atom_header;
|
|
|
1679 atom->last = atom_header + atom_size;
|
|
|
1680
|
|
|
1681 trak->dinf_size += atom_size;
|
|
|
1682 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
|
1683
|
|
|
1684 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1685
|
|
|
1686 return NGX_OK;
|
|
|
1687 }
|
|
|
1688
|
|
|
1689
|
|
|
1690 static ngx_int_t
|
|
|
1691 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1692 {
|
|
|
1693 u_char *atom_header;
|
|
|
1694 ngx_buf_t *atom;
|
|
|
1695 ngx_http_mp4_trak_t *trak;
|
|
|
1696
|
|
|
1697 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
|
1698
|
|
|
1699 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1700 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
|
1701
|
|
|
1702 trak = ngx_mp4_last_trak(mp4);
|
|
|
1703
|
|
|
1704 atom = &trak->stbl_atom_buf;
|
|
|
1705 atom->temporary = 1;
|
|
|
1706 atom->pos = atom_header;
|
|
|
1707 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1708
|
|
|
1709 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
|
1710
|
|
|
1711 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
|
1712 }
|
|
|
1713
|
|
|
1714
|
|
|
1715 static void
|
|
|
1716 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1717 ngx_http_mp4_trak_t *trak)
|
|
|
1718 {
|
|
|
1719 ngx_buf_t *atom;
|
|
|
1720
|
|
|
1721 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1722 atom = &trak->stbl_atom_buf;
|
|
|
1723 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1724 }
|
|
|
1725
|
|
|
1726
|
|
|
1727 typedef struct {
|
|
|
1728 u_char size[4];
|
|
|
1729 u_char name[4];
|
|
|
1730 u_char version[1];
|
|
|
1731 u_char flags[3];
|
|
|
1732 u_char entries[4];
|
|
|
1733
|
|
|
1734 u_char media_size[4];
|
|
|
1735 u_char media_name[4];
|
|
|
1736 } ngx_mp4_stsd_atom_t;
|
|
|
1737
|
|
|
1738
|
|
|
1739 static ngx_int_t
|
|
|
1740 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1741 {
|
|
|
1742 u_char *atom_header, *atom_table;
|
|
|
1743 size_t atom_size;
|
|
|
1744 ngx_buf_t *atom;
|
|
|
1745 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
|
1746 ngx_http_mp4_trak_t *trak;
|
|
|
1747
|
|
|
1748 /* sample description atom */
|
|
|
1749
|
|
|
1750 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
|
1751
|
|
|
1752 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1753 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
|
1754 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1755 atom_table = atom_header + atom_size;
|
|
|
1756 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
|
1757 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
|
1758
|
|
|
1759 if ((uint64_t) (sizeof(ngx_mp4_stsd_atom_t) - sizeof(ngx_mp4_atom_header_t))
|
|
640
|
1760 > atom_data_size)
|
|
|
1761 {
|
|
638
|
1762 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1763 "\"%s\" mp4 stsd atom too large",
|
|
|
1764 mp4->file.name.data);
|
|
|
1765 return NGX_ERROR;
|
|
|
1766 }
|
|
|
1767
|
|
|
1768 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1769 "stsd entries:%uD, media:%*s",
|
|
|
1770 ngx_mp4_get_32value(stsd_atom->entries),
|
|
|
1771 4, stsd_atom->media_name);
|
|
|
1772
|
|
|
1773 /* supported media format: "avc1" (H.264) and "mp4a" (MPEG-4/AAC) */
|
|
|
1774
|
|
|
1775 if (ngx_strncmp(stsd_atom->media_name, "avc1", 4) != 0
|
|
|
1776 && ngx_strncmp(stsd_atom->media_name, "mp4a", 4) != 0)
|
|
|
1777 {
|
|
|
1778 return NGX_DECLINED;
|
|
|
1779 }
|
|
|
1780
|
|
|
1781 trak = ngx_mp4_last_trak(mp4);
|
|
|
1782
|
|
|
1783 atom = &trak->stsd_atom_buf;
|
|
|
1784 atom->temporary = 1;
|
|
|
1785 atom->pos = atom_header;
|
|
|
1786 atom->last = atom_table;
|
|
|
1787
|
|
|
1788 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
|
1789 trak->size += atom_size;
|
|
|
1790
|
|
|
1791 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1792
|
|
|
1793 return NGX_OK;
|
|
|
1794 }
|
|
|
1795
|
|
|
1796
|
|
|
1797 typedef struct {
|
|
|
1798 u_char size[4];
|
|
|
1799 u_char name[4];
|
|
|
1800 u_char version[1];
|
|
|
1801 u_char flags[3];
|
|
|
1802 u_char entries[4];
|
|
|
1803 } ngx_mp4_stts_atom_t;
|
|
|
1804
|
|
|
1805 typedef struct {
|
|
|
1806 u_char count[4];
|
|
|
1807 u_char duration[4];
|
|
|
1808 } ngx_mp4_stts_entry_t;
|
|
|
1809
|
|
|
1810
|
|
|
1811 static ngx_int_t
|
|
|
1812 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1813 {
|
|
|
1814 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1815 uint32_t entries;
|
|
|
1816 ngx_buf_t *atom, *data;
|
|
|
1817 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1818 ngx_http_mp4_trak_t *trak;
|
|
|
1819
|
|
|
1820 /* time-to-sample atom */
|
|
|
1821
|
|
|
1822 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
|
1823
|
|
|
1824 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1825 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
|
1826 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
|
1827
|
|
|
1828 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
|
1829
|
|
|
1830 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1831 "mp4 time-to-sample entries:%uD", entries);
|
|
|
1832
|
|
|
1833 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
|
1834 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
|
1835
|
|
|
1836 if ((uint64_t) (atom_end - stts_atom->version) > atom_data_size) {
|
|
|
1837 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1838 "\"%s\" mp4 stts atom too large",
|
|
|
1839 mp4->file.name.data);
|
|
|
1840 return NGX_ERROR;
|
|
|
1841 }
|
|
|
1842
|
|
|
1843 trak = ngx_mp4_last_trak(mp4);
|
|
|
1844 trak->time_to_sample_entries = entries;
|
|
|
1845
|
|
|
1846 atom = &trak->stts_atom_buf;
|
|
|
1847 atom->temporary = 1;
|
|
|
1848 atom->pos = atom_header;
|
|
|
1849 atom->last = atom_table;
|
|
|
1850
|
|
|
1851 data = &trak->stts_data_buf;
|
|
|
1852 data->temporary = 1;
|
|
|
1853 data->pos = atom_table;
|
|
|
1854 data->last = atom_end;
|
|
|
1855
|
|
|
1856 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
|
1857 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
|
1858
|
|
|
1859 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1860
|
|
|
1861 return NGX_OK;
|
|
|
1862 }
|
|
|
1863
|
|
|
1864
|
|
|
1865 static ngx_int_t
|
|
|
1866 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1867 ngx_http_mp4_trak_t *trak)
|
|
|
1868 {
|
|
|
1869 size_t atom_size;
|
|
|
1870 uint32_t entries, count, duration;
|
|
|
1871 uint64_t start_time;
|
|
|
1872 ngx_buf_t *atom, *data;
|
|
|
1873 ngx_uint_t start_sample;
|
|
|
1874 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1875 ngx_mp4_stts_entry_t *entry, *end;
|
|
|
1876
|
|
|
1877 /*
|
|
|
1878 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
|
1879 * from mdia.mdhd atom which may reside after mdia.minf
|
|
|
1880 */
|
|
|
1881
|
|
|
1882 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1883 "mp4 stts atom update");
|
|
|
1884
|
|
|
1885 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
|
1886
|
|
|
1887 if (data == NULL) {
|
|
|
1888 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1889 "no mp4 stts atoms were found in \"%s\"",
|
|
|
1890 mp4->file.name.data);
|
|
|
1891 return NGX_ERROR;
|
|
|
1892 }
|
|
|
1893
|
|
|
1894 entries = trak->time_to_sample_entries;
|
|
644
|
1895 start_time = (uint64_t) mp4->start * trak->timescale / 1000;
|
|
638
|
1896
|
|
|
1897 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1898 "time-to-sample start_time:%uL", start_time);
|
|
|
1899
|
|
|
1900 start_sample = 0;
|
|
|
1901 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
|
1902 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
|
1903
|
|
|
1904 while (entry < end) {
|
|
|
1905 count = ngx_mp4_get_32value(entry->count);
|
|
|
1906 duration = ngx_mp4_get_32value(entry->duration);
|
|
|
1907
|
|
|
1908 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1909 "count:%uD, duration:%uD", count, duration);
|
|
|
1910
|
|
650
|
1911 if (start_time < (uint64_t) count * duration) {
|
|
638
|
1912 start_sample += (ngx_uint_t) (start_time / duration);
|
|
|
1913 count -= start_sample;
|
|
|
1914 ngx_mp4_set_32value(entry->count, count);
|
|
|
1915 goto found;
|
|
|
1916 }
|
|
|
1917
|
|
|
1918 start_sample += count;
|
|
|
1919 start_time -= count * duration;
|
|
|
1920 entries--;
|
|
|
1921 entry++;
|
|
|
1922 }
|
|
|
1923
|
|
|
1924 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1925 "start time is out mp4 stts samples in \"%s\"",
|
|
|
1926 mp4->file.name.data);
|
|
|
1927
|
|
|
1928 return NGX_ERROR;
|
|
|
1929
|
|
|
1930 found:
|
|
|
1931
|
|
|
1932 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1933 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
|
1934
|
|
|
1935 trak->start_sample = start_sample;
|
|
|
1936
|
|
|
1937 data->pos = (u_char *) entry;
|
|
|
1938 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
|
1939 trak->size += atom_size;
|
|
|
1940
|
|
|
1941 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
|
1942 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
|
1943 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
|
1944 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
|
1945
|
|
|
1946 return NGX_OK;
|
|
|
1947 }
|
|
|
1948
|
|
|
1949
|
|
|
1950 typedef struct {
|
|
|
1951 u_char size[4];
|
|
|
1952 u_char name[4];
|
|
|
1953 u_char version[1];
|
|
|
1954 u_char flags[3];
|
|
|
1955 u_char entries[4];
|
|
|
1956 } ngx_http_mp4_stss_atom_t;
|
|
|
1957
|
|
|
1958
|
|
|
1959 static ngx_int_t
|
|
|
1960 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1961 {
|
|
|
1962 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1963 uint32_t entries;
|
|
|
1964 ngx_buf_t *atom, *data;
|
|
|
1965 ngx_http_mp4_trak_t *trak;
|
|
|
1966 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
1967
|
|
|
1968 /* sync samples atom */
|
|
|
1969
|
|
|
1970 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
|
1971
|
|
|
1972 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1973 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
|
1974 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
|
1975
|
|
|
1976 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
|
1977
|
|
|
1978 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1979 "sync sample entries:%uD", entries);
|
|
|
1980
|
|
|
1981 trak = ngx_mp4_last_trak(mp4);
|
|
|
1982 trak->sync_samples_entries = entries;
|
|
|
1983
|
|
|
1984 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
|
1985
|
|
|
1986 atom = &trak->stss_atom_buf;
|
|
|
1987 atom->temporary = 1;
|
|
|
1988 atom->pos = atom_header;
|
|
|
1989 atom->last = atom_table;
|
|
|
1990
|
|
|
1991 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
1992
|
|
|
1993 if ((uint64_t) (atom_end - stss_atom->version) > atom_data_size) {
|
|
|
1994 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1995 "\"%s\" mp4 stss atom too large", mp4->file.name.data);
|
|
|
1996 return NGX_ERROR;
|
|
|
1997 }
|
|
|
1998
|
|
|
1999 data = &trak->stss_data_buf;
|
|
|
2000 data->temporary = 1;
|
|
|
2001 data->pos = atom_table;
|
|
|
2002 data->last = atom_end;
|
|
|
2003
|
|
|
2004 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
|
2005 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
|
2006
|
|
|
2007 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2008
|
|
|
2009 return NGX_OK;
|
|
|
2010 }
|
|
|
2011
|
|
|
2012
|
|
|
2013 static ngx_int_t
|
|
|
2014 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2015 ngx_http_mp4_trak_t *trak)
|
|
|
2016 {
|
|
|
2017 size_t atom_size;
|
|
|
2018 uint32_t entries, sample, start_sample, *entry, *end;
|
|
|
2019 ngx_buf_t *atom, *data;
|
|
|
2020 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2021
|
|
|
2022 /*
|
|
|
2023 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
|
2024 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2025 * atom which may reside after mdia.minf
|
|
|
2026 */
|
|
|
2027
|
|
|
2028 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2029 "mp4 stss atom update");
|
|
|
2030
|
|
|
2031 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
|
2032
|
|
|
2033 if (data == NULL) {
|
|
|
2034 return NGX_OK;
|
|
|
2035 }
|
|
|
2036
|
|
|
2037 /* sync samples starts from 1 */
|
|
|
2038 start_sample = trak->start_sample + 1;
|
|
|
2039 entries = trak->sync_samples_entries;
|
|
|
2040
|
|
|
2041 entry = (uint32_t *) data->pos;
|
|
|
2042 end = (uint32_t *) data->last;
|
|
|
2043
|
|
|
2044 while (entry < end) {
|
|
|
2045 sample = ngx_mp4_get_32value(entry);
|
|
|
2046
|
|
|
2047 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2048 "start:%uD, sync:%uD", start_sample, sample);
|
|
|
2049
|
|
|
2050 if (sample >= start_sample) {
|
|
|
2051 goto found;
|
|
|
2052 }
|
|
|
2053
|
|
|
2054 entries--;
|
|
|
2055 entry++;
|
|
|
2056 }
|
|
|
2057
|
|
|
2058 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2059 "start sample is out of mp4 stss atom in \"%s\"",
|
|
|
2060 mp4->file.name.data);
|
|
|
2061
|
|
|
2062 return NGX_ERROR;
|
|
|
2063
|
|
|
2064 found:
|
|
|
2065
|
|
|
2066 data->pos = (u_char *) entry;
|
|
|
2067
|
|
|
2068 start_sample = trak->start_sample;
|
|
|
2069
|
|
|
2070 while (entry < end) {
|
|
|
2071 sample = ngx_mp4_get_32value(entry);
|
|
|
2072 sample -= start_sample;
|
|
|
2073 ngx_mp4_set_32value(entry, sample);
|
|
|
2074 entry++;
|
|
|
2075 }
|
|
|
2076
|
|
|
2077 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
|
2078 trak->size += atom_size;
|
|
|
2079
|
|
|
2080 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
|
2081 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
|
2082
|
|
|
2083 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
|
2084 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
|
2085
|
|
|
2086 return NGX_OK;
|
|
|
2087 }
|
|
|
2088
|
|
|
2089
|
|
|
2090 typedef struct {
|
|
|
2091 u_char size[4];
|
|
|
2092 u_char name[4];
|
|
|
2093 u_char version[1];
|
|
|
2094 u_char flags[3];
|
|
|
2095 u_char entries[4];
|
|
|
2096 } ngx_mp4_ctts_atom_t;
|
|
|
2097
|
|
|
2098 typedef struct {
|
|
|
2099 u_char count[4];
|
|
|
2100 u_char offset[4];
|
|
|
2101 } ngx_mp4_ctts_entry_t;
|
|
|
2102
|
|
|
2103
|
|
|
2104 static ngx_int_t
|
|
|
2105 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2106 {
|
|
|
2107 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2108 uint32_t entries;
|
|
|
2109 ngx_buf_t *atom, *data;
|
|
|
2110 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2111 ngx_http_mp4_trak_t *trak;
|
|
|
2112
|
|
|
2113 /* composition offsets atom */
|
|
|
2114
|
|
|
2115 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
|
2116
|
|
|
2117 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2118 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
|
2119 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
|
2120
|
|
|
2121 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
|
2122
|
|
|
2123 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2124 "composition offset entries:%uD", entries);
|
|
|
2125
|
|
|
2126 trak = ngx_mp4_last_trak(mp4);
|
|
|
2127 trak->composition_offset_entries = entries;
|
|
|
2128
|
|
|
2129 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
|
2130
|
|
|
2131 atom = &trak->ctts_atom_buf;
|
|
|
2132 atom->temporary = 1;
|
|
|
2133 atom->pos = atom_header;
|
|
|
2134 atom->last = atom_table;
|
|
|
2135
|
|
|
2136 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
|
2137
|
|
|
2138 if ((uint64_t) (atom_end - ctts_atom->version) > atom_data_size) {
|
|
|
2139 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2140 "\"%s\" mp4 ctts atom too large", mp4->file.name.data);
|
|
|
2141 return NGX_ERROR;
|
|
|
2142 }
|
|
|
2143
|
|
|
2144 data = &trak->ctts_data_buf;
|
|
|
2145 data->temporary = 1;
|
|
|
2146 data->pos = atom_table;
|
|
|
2147 data->last = atom_end;
|
|
|
2148
|
|
|
2149 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
|
2150 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
|
2151
|
|
|
2152 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2153
|
|
|
2154 return NGX_OK;
|
|
|
2155 }
|
|
|
2156
|
|
|
2157
|
|
|
2158 static void
|
|
|
2159 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2160 ngx_http_mp4_trak_t *trak)
|
|
|
2161 {
|
|
|
2162 size_t atom_size;
|
|
|
2163 uint32_t entries, count, start_sample;
|
|
|
2164 ngx_buf_t *atom, *data;
|
|
|
2165 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2166 ngx_mp4_ctts_entry_t *entry, *end;
|
|
|
2167
|
|
|
2168 /*
|
|
|
2169 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
|
2170 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2171 * atom which may reside after mdia.minf
|
|
|
2172 */
|
|
|
2173
|
|
|
2174 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2175 "mp4 ctts atom update");
|
|
|
2176
|
|
|
2177 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
|
2178
|
|
|
2179 if (data == NULL) {
|
|
|
2180 return;
|
|
|
2181 }
|
|
|
2182
|
|
|
2183 /* sync samples starts from 1 */
|
|
|
2184 start_sample = trak->start_sample + 1;
|
|
|
2185 entries = trak->composition_offset_entries;
|
|
|
2186 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
|
2187 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
|
2188
|
|
|
2189 while (entry < end) {
|
|
|
2190 count = ngx_mp4_get_32value(entry->count);
|
|
|
2191
|
|
|
2192 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2193 "start:%uD, count:%uD, offset:%uD",
|
|
|
2194 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
|
2195
|
|
|
2196 if (start_sample <= count) {
|
|
|
2197 count -= (start_sample - 1);
|
|
|
2198 ngx_mp4_set_32value(entry->count, count);
|
|
|
2199 goto found;
|
|
|
2200 }
|
|
|
2201
|
|
|
2202 start_sample -= count;
|
|
|
2203 entries--;
|
|
|
2204 entry++;
|
|
|
2205 }
|
|
|
2206
|
|
|
2207 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
|
2208 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
|
2209
|
|
|
2210 return;
|
|
|
2211
|
|
|
2212 found:
|
|
|
2213
|
|
|
2214 data->pos = (u_char *) entry;
|
|
|
2215 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
|
2216 trak->size += atom_size;
|
|
|
2217
|
|
|
2218 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
|
2219 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
|
2220
|
|
|
2221 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
|
2222 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
|
2223
|
|
|
2224 return;
|
|
|
2225 }
|
|
|
2226
|
|
|
2227
|
|
|
2228 typedef struct {
|
|
|
2229 u_char size[4];
|
|
|
2230 u_char name[4];
|
|
|
2231 u_char version[1];
|
|
|
2232 u_char flags[3];
|
|
|
2233 u_char entries[4];
|
|
|
2234 } ngx_mp4_stsc_atom_t;
|
|
|
2235
|
|
|
2236
|
|
|
2237 static ngx_int_t
|
|
|
2238 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2239 {
|
|
|
2240 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2241 uint32_t entries;
|
|
|
2242 ngx_buf_t *atom, *data;
|
|
|
2243 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2244 ngx_http_mp4_trak_t *trak;
|
|
|
2245
|
|
|
2246 /* sample-to-chunk atom */
|
|
|
2247
|
|
|
2248 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
|
2249
|
|
|
2250 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2251 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
|
2252 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
|
2253
|
|
|
2254 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
|
2255
|
|
|
2256 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2257 "sample-to-chunk entries:%uD", entries);
|
|
|
2258
|
|
|
2259 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
|
2260 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2261
|
|
|
2262 if ((uint64_t) (atom_end - stsc_atom->version) > atom_data_size) {
|
|
|
2263 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2264 "\"%s\" mp4 stsc atom too large",
|
|
|
2265 mp4->file.name.data);
|
|
|
2266 return NGX_ERROR;
|
|
|
2267 }
|
|
|
2268
|
|
|
2269 trak = ngx_mp4_last_trak(mp4);
|
|
|
2270 trak->sample_to_chunk_entries = entries;
|
|
|
2271
|
|
|
2272 atom = &trak->stsc_atom_buf;
|
|
|
2273 atom->temporary = 1;
|
|
|
2274 atom->pos = atom_header;
|
|
|
2275 atom->last = atom_table;
|
|
|
2276
|
|
|
2277 data = &trak->stsc_data_buf;
|
|
|
2278 data->temporary = 1;
|
|
|
2279 data->pos = atom_table;
|
|
|
2280 data->last = atom_end;
|
|
|
2281
|
|
|
2282 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
|
2283 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
|
2284
|
|
|
2285 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2286
|
|
|
2287 return NGX_OK;
|
|
|
2288 }
|
|
|
2289
|
|
|
2290
|
|
|
2291 static ngx_int_t
|
|
|
2292 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2293 ngx_http_mp4_trak_t *trak)
|
|
|
2294 {
|
|
|
2295 size_t atom_size;
|
|
|
2296 uint32_t start_sample, entries, chunk, samples, id,
|
|
|
2297 next_chunk, n;
|
|
|
2298 ngx_buf_t *atom, *data, *buf;
|
|
|
2299 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2300 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
|
2301
|
|
|
2302 /*
|
|
|
2303 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
|
2304 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2305 * atom which may reside after mdia.minf
|
|
|
2306 */
|
|
|
2307
|
|
|
2308 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2309 "mp4 stsc atom update");
|
|
|
2310
|
|
|
2311 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
|
2312
|
|
|
2313 if (data == NULL) {
|
|
|
2314 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2315 "no mp4 stsc atoms were found in \"%s\"",
|
|
|
2316 mp4->file.name.data);
|
|
|
2317 return NGX_ERROR;
|
|
|
2318 }
|
|
|
2319
|
|
|
2320 start_sample = (uint32_t) trak->start_sample;
|
|
|
2321 entries = trak->sample_to_chunk_entries - 1;
|
|
|
2322
|
|
|
2323 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
|
2324 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
|
2325
|
|
|
2326 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2327 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2328 id = ngx_mp4_get_32value(entry->id);
|
|
|
2329 entry++;
|
|
|
2330
|
|
|
2331 while (entry < end) {
|
|
|
2332
|
|
|
2333 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2334
|
|
|
2335 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2336 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
|
2337 "samples:%uD, id:%uD",
|
|
|
2338 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
|
2339
|
|
|
2340 n = (next_chunk - chunk) * samples;
|
|
|
2341
|
|
|
2342 if (start_sample <= n) {
|
|
|
2343 goto found;
|
|
|
2344 }
|
|
|
2345
|
|
|
2346 start_sample -= n;
|
|
|
2347
|
|
|
2348 chunk = next_chunk;
|
|
|
2349 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2350 id = ngx_mp4_get_32value(entry->id);
|
|
|
2351 entries--;
|
|
|
2352 entry++;
|
|
|
2353 }
|
|
|
2354
|
|
|
2355 next_chunk = trak->chunks;
|
|
|
2356
|
|
|
2357 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2358 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
|
2359 start_sample, chunk, next_chunk - chunk, samples);
|
|
|
2360
|
|
|
2361 n = (next_chunk - chunk) * samples;
|
|
|
2362
|
|
|
2363 if (start_sample > n) {
|
|
|
2364 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2365 "start time is out mp4 stsc chunks in \"%s\"",
|
|
|
2366 mp4->file.name.data);
|
|
|
2367 return NGX_ERROR;
|
|
|
2368 }
|
|
|
2369
|
|
|
2370 found:
|
|
|
2371
|
|
|
2372 entries++;
|
|
|
2373 entry--;
|
|
|
2374
|
|
|
2375 if (samples == 0) {
|
|
|
2376 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2377 "zero number of samples in \"%s\"",
|
|
|
2378 mp4->file.name.data);
|
|
|
2379 return NGX_ERROR;
|
|
|
2380 }
|
|
|
2381
|
|
|
2382 trak->start_chunk = chunk - 1;
|
|
|
2383
|
|
|
2384 trak->start_chunk += start_sample / samples;
|
|
|
2385 trak->chunk_samples = start_sample % samples;
|
|
|
2386
|
|
|
2387 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2388 "start chunk:%ui, samples:%uD",
|
|
|
2389 trak->start_chunk, trak->chunk_samples);
|
|
|
2390
|
|
|
2391 data->pos = (u_char *) entry;
|
|
|
2392 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
|
2393
|
|
656
|
2394 ngx_mp4_set_32value(entry->chunk, 1);
|
|
|
2395
|
|
638
|
2396 if (trak->chunk_samples) {
|
|
|
2397
|
|
|
2398 first = &trak->stsc_chunk_entry;
|
|
|
2399 ngx_mp4_set_32value(first->chunk, 1);
|
|
|
2400 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
|
2401 ngx_mp4_set_32value(first->id, id);
|
|
|
2402
|
|
|
2403 buf = &trak->stsc_chunk_buf;
|
|
|
2404 buf->temporary = 1;
|
|
|
2405 buf->pos = (u_char *) first;
|
|
|
2406 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2407
|
|
|
2408 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
|
2409
|
|
|
2410 ngx_mp4_set_32value(entry->chunk, 2);
|
|
|
2411
|
|
|
2412 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2413 }
|
|
|
2414
|
|
|
2415 while (++entry < end) {
|
|
|
2416 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2417 chunk -= trak->start_chunk;
|
|
|
2418 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
|
2419 }
|
|
|
2420
|
|
|
2421 trak->size += atom_size;
|
|
|
2422
|
|
|
2423 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
|
2424 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
|
2425
|
|
|
2426 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
|
2427 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
|
2428
|
|
|
2429 return NGX_OK;
|
|
|
2430 }
|
|
|
2431
|
|
|
2432
|
|
|
2433 typedef struct {
|
|
|
2434 u_char size[4];
|
|
|
2435 u_char name[4];
|
|
|
2436 u_char version[1];
|
|
|
2437 u_char flags[3];
|
|
|
2438 u_char uniform_size[4];
|
|
|
2439 u_char entries[4];
|
|
|
2440 } ngx_mp4_stsz_atom_t;
|
|
|
2441
|
|
|
2442
|
|
|
2443 static ngx_int_t
|
|
|
2444 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2445 {
|
|
|
2446 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2447 size_t atom_size;
|
|
|
2448 uint32_t entries, size;
|
|
|
2449 ngx_buf_t *atom, *data;
|
|
|
2450 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2451 ngx_http_mp4_trak_t *trak;
|
|
|
2452
|
|
|
2453 /* sample sizes atom */
|
|
|
2454
|
|
|
2455 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
|
2456
|
|
|
2457 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2458 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
|
2459 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
|
2460
|
|
|
2461 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
|
2462 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
|
2463
|
|
|
2464 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2465 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
|
2466
|
|
|
2467 trak = ngx_mp4_last_trak(mp4);
|
|
|
2468 trak->sample_sizes_entries = entries;
|
|
|
2469
|
|
|
2470 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
|
2471
|
|
|
2472 atom = &trak->stsz_atom_buf;
|
|
|
2473 atom->temporary = 1;
|
|
|
2474 atom->pos = atom_header;
|
|
|
2475 atom->last = atom_table;
|
|
|
2476
|
|
|
2477 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
|
2478
|
|
|
2479 if (size == 0) {
|
|
|
2480 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2481
|
|
|
2482 if ((uint64_t) (atom_end - stsz_atom->version) > atom_data_size) {
|
|
|
2483 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2484 "\"%s\" mp4 stsz atom too large",
|
|
|
2485 mp4->file.name.data);
|
|
|
2486 return NGX_ERROR;
|
|
|
2487 }
|
|
|
2488
|
|
|
2489 data = &trak->stsz_data_buf;
|
|
|
2490 data->temporary = 1;
|
|
|
2491 data->pos = atom_table;
|
|
|
2492 data->last = atom_end;
|
|
|
2493
|
|
|
2494 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
|
2495
|
|
|
2496 } else {
|
|
|
2497 /* if size != 0 then all samples are the same size */
|
|
|
2498 /* TODO : chunk samples */
|
|
|
2499 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
2500 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
2501 trak->size += atom_size;
|
|
|
2502 }
|
|
|
2503
|
|
|
2504 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2505
|
|
|
2506 return NGX_OK;
|
|
|
2507 }
|
|
|
2508
|
|
|
2509
|
|
|
2510 static void
|
|
|
2511 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2512 ngx_http_mp4_trak_t *trak)
|
|
|
2513 {
|
|
|
2514 size_t atom_size;
|
|
|
2515 uint32_t *pos, *end;
|
|
|
2516 ngx_buf_t *atom, *data;
|
|
|
2517 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2518
|
|
|
2519 /*
|
|
|
2520 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
|
2521 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2522 * atom which may reside after mdia.minf
|
|
|
2523 */
|
|
|
2524
|
|
|
2525 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2526 "mp4 stsz atom update");
|
|
|
2527
|
|
|
2528 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
|
2529
|
|
|
2530 if (data) {
|
|
|
2531 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
|
2532 end = (uint32_t *) data->pos;
|
|
|
2533
|
|
|
2534 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
|
2535 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
|
2536 }
|
|
|
2537
|
|
|
2538 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
640
|
2539 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
|
638
|
2540
|
|
|
2541 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
|
2542 trak->size += atom_size;
|
|
|
2543
|
|
|
2544 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
|
2545 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
|
2546
|
|
|
2547 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
|
2548 ngx_mp4_set_32value(stsz_atom->entries,
|
|
|
2549 trak->sample_sizes_entries - trak->start_sample);
|
|
|
2550 }
|
|
|
2551 }
|
|
|
2552
|
|
|
2553
|
|
|
2554 typedef struct {
|
|
|
2555 u_char size[4];
|
|
|
2556 u_char name[4];
|
|
|
2557 u_char version[1];
|
|
|
2558 u_char flags[3];
|
|
|
2559 u_char entries[4];
|
|
|
2560 } ngx_mp4_stco_atom_t;
|
|
|
2561
|
|
|
2562
|
|
|
2563 static ngx_int_t
|
|
|
2564 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2565 {
|
|
|
2566 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2567 uint32_t entries;
|
|
|
2568 ngx_buf_t *atom, *data;
|
|
|
2569 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2570 ngx_http_mp4_trak_t *trak;
|
|
|
2571
|
|
|
2572 /* chunk offsets atom */
|
|
|
2573
|
|
|
2574 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
|
2575
|
|
|
2576 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2577 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
|
2578 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
|
2579
|
|
|
2580 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
|
2581
|
|
|
2582 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2583
|
|
|
2584 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
|
2585 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2586
|
|
|
2587 if ((uint64_t) (atom_end - stco_atom->version) > atom_data_size) {
|
|
|
2588 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2589 "\"%s\" mp4 stco atom too large", mp4->file.name.data);
|
|
|
2590 return NGX_ERROR;
|
|
|
2591 }
|
|
|
2592
|
|
|
2593 trak = ngx_mp4_last_trak(mp4);
|
|
|
2594 trak->chunks = entries;
|
|
|
2595
|
|
640
|
2596 atom = &trak->stco_atom_buf;
|
|
638
|
2597 atom->temporary = 1;
|
|
|
2598 atom->pos = atom_header;
|
|
|
2599 atom->last = atom_table;
|
|
|
2600
|
|
640
|
2601 data = &trak->stco_data_buf;
|
|
638
|
2602 data->temporary = 1;
|
|
|
2603 data->pos = atom_table;
|
|
|
2604 data->last = atom_end;
|
|
|
2605
|
|
|
2606 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
|
2607 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
|
2608
|
|
|
2609 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2610
|
|
|
2611 return NGX_OK;
|
|
|
2612 }
|
|
|
2613
|
|
|
2614
|
|
|
2615 static ngx_int_t
|
|
|
2616 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2617 ngx_http_mp4_trak_t *trak)
|
|
|
2618 {
|
|
|
2619 size_t atom_size;
|
|
|
2620 ngx_buf_t *atom, *data;
|
|
|
2621 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2622
|
|
|
2623 /*
|
|
|
2624 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
|
2625 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2626 * atom which may reside after mdia.minf
|
|
|
2627 */
|
|
|
2628
|
|
|
2629 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2630 "mp4 stco atom update");
|
|
|
2631
|
|
|
2632 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2633
|
|
|
2634 if (data == NULL) {
|
|
|
2635 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2636 "no mp4 stco atoms were found in \"%s\"",
|
|
|
2637 mp4->file.name.data);
|
|
|
2638 return NGX_ERROR;
|
|
|
2639 }
|
|
|
2640
|
|
|
2641 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
|
2642 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
|
2643 trak->size += atom_size;
|
|
|
2644
|
|
|
2645 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
|
2646 trak->start_offset += trak->chunk_samples_size;
|
|
|
2647 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
|
2648
|
|
|
2649 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2650 "start chunk offset:%uD", trak->start_offset);
|
|
|
2651
|
|
|
2652 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
|
2653 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
|
2654
|
|
|
2655 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
|
2656 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2657
|
|
|
2658 return NGX_OK;
|
|
|
2659 }
|
|
|
2660
|
|
|
2661
|
|
|
2662 static void
|
|
|
2663 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2664 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
|
2665 {
|
|
|
2666 uint32_t offset, *entry, *end;
|
|
|
2667 ngx_buf_t *data;
|
|
|
2668
|
|
|
2669 /*
|
|
|
2670 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
|
2671 * minimal start offset of all traks and new moov atom size
|
|
|
2672 */
|
|
|
2673
|
|
|
2674 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2675 "mp4 stco atom adjustment");
|
|
|
2676
|
|
|
2677 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2678 entry = (uint32_t *) data->pos;
|
|
|
2679 end = (uint32_t *) data->last;
|
|
|
2680
|
|
|
2681 while (entry < end) {
|
|
|
2682 offset = ngx_mp4_get_32value(entry);
|
|
|
2683 offset += adjustment;
|
|
|
2684 ngx_mp4_set_32value(entry, offset);
|
|
|
2685 entry++;
|
|
|
2686 }
|
|
|
2687 }
|
|
|
2688
|
|
|
2689
|
|
640
|
2690 typedef struct {
|
|
|
2691 u_char size[4];
|
|
|
2692 u_char name[4];
|
|
|
2693 u_char version[1];
|
|
|
2694 u_char flags[3];
|
|
|
2695 u_char entries[4];
|
|
|
2696 } ngx_mp4_co64_atom_t;
|
|
|
2697
|
|
|
2698
|
|
|
2699 static ngx_int_t
|
|
|
2700 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2701 {
|
|
|
2702 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2703 uint32_t entries;
|
|
|
2704 ngx_buf_t *atom, *data;
|
|
|
2705 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2706 ngx_http_mp4_trak_t *trak;
|
|
|
2707
|
|
|
2708 /* chunk offsets atom */
|
|
|
2709
|
|
|
2710 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
|
|
|
2711
|
|
|
2712 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2713 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
|
|
|
2714 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
|
|
|
2715
|
|
|
2716 entries = ngx_mp4_get_32value(co64_atom->entries);
|
|
|
2717
|
|
|
2718 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2719
|
|
|
2720 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
|
|
|
2721 atom_end = atom_table + entries * sizeof(uint64_t);
|
|
|
2722
|
|
|
2723 if ((uint64_t) (atom_end - co64_atom->version) > atom_data_size) {
|
|
|
2724 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2725 "\"%s\" mp4 co64 atom too large", mp4->file.name.data);
|
|
|
2726 return NGX_ERROR;
|
|
|
2727 }
|
|
|
2728
|
|
|
2729 trak = ngx_mp4_last_trak(mp4);
|
|
|
2730 trak->chunks = entries;
|
|
|
2731
|
|
|
2732 atom = &trak->co64_atom_buf;
|
|
|
2733 atom->temporary = 1;
|
|
|
2734 atom->pos = atom_header;
|
|
|
2735 atom->last = atom_table;
|
|
|
2736
|
|
|
2737 data = &trak->co64_data_buf;
|
|
|
2738 data->temporary = 1;
|
|
|
2739 data->pos = atom_table;
|
|
|
2740 data->last = atom_end;
|
|
|
2741
|
|
|
2742 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
|
|
|
2743 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
|
|
|
2744
|
|
|
2745 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2746
|
|
|
2747 return NGX_OK;
|
|
|
2748 }
|
|
|
2749
|
|
|
2750
|
|
|
2751 static ngx_int_t
|
|
|
2752 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2753 ngx_http_mp4_trak_t *trak)
|
|
|
2754 {
|
|
|
2755 size_t atom_size;
|
|
|
2756 ngx_buf_t *atom, *data;
|
|
|
2757 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2758
|
|
|
2759 /*
|
|
|
2760 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
|
2761 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2762 * atom which may reside after mdia.minf
|
|
|
2763 */
|
|
|
2764
|
|
|
2765 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2766 "mp4 co64 atom update");
|
|
|
2767
|
|
|
2768 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2769
|
|
|
2770 if (data == NULL) {
|
|
|
2771 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2772 "no mp4 co64 atoms were found in \"%s\"",
|
|
|
2773 mp4->file.name.data);
|
|
|
2774 return NGX_ERROR;
|
|
|
2775 }
|
|
|
2776
|
|
|
2777 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
|
2778 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
|
2779 trak->size += atom_size;
|
|
|
2780
|
|
|
2781 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
|
2782 trak->start_offset += trak->chunk_samples_size;
|
|
|
2783 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
|
2784
|
|
|
2785 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2786 "start chunk offset:%uL", trak->start_offset);
|
|
|
2787
|
|
|
2788 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
|
2789 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
|
2790
|
|
|
2791 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
|
2792 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2793
|
|
|
2794 return NGX_OK;
|
|
|
2795 }
|
|
|
2796
|
|
|
2797
|
|
|
2798 static void
|
|
|
2799 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2800 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
|
2801 {
|
|
|
2802 uint64_t offset, *entry, *end;
|
|
|
2803 ngx_buf_t *data;
|
|
|
2804
|
|
|
2805 /*
|
|
|
2806 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
|
2807 * minimal start offset of all traks and new moov atom size
|
|
|
2808 */
|
|
|
2809
|
|
|
2810 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2811 "mp4 co64 atom adjustment");
|
|
|
2812
|
|
|
2813 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2814 entry = (uint64_t *) data->pos;
|
|
|
2815 end = (uint64_t *) data->last;
|
|
|
2816
|
|
|
2817 while (entry < end) {
|
|
|
2818 offset = ngx_mp4_get_64value(entry);
|
|
|
2819 offset += adjustment;
|
|
|
2820 ngx_mp4_set_64value(entry, offset);
|
|
|
2821 entry++;
|
|
|
2822 }
|
|
|
2823 }
|
|
|
2824
|
|
|
2825
|
|
638
|
2826 static char *
|
|
|
2827 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2828 {
|
|
|
2829 ngx_http_core_loc_conf_t *clcf;
|
|
|
2830
|
|
|
2831 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
2832 clcf->handler = ngx_http_mp4_handler;
|
|
|
2833
|
|
|
2834 return NGX_CONF_OK;
|
|
|
2835 }
|
|
|
2836
|
|
|
2837
|
|
|
2838 static void *
|
|
|
2839 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
|
2840 {
|
|
|
2841 ngx_http_mp4_conf_t *conf;
|
|
|
2842
|
|
|
2843 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
|
2844 if (conf == NULL) {
|
|
|
2845 return NULL;
|
|
|
2846 }
|
|
|
2847
|
|
|
2848 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2849 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2850
|
|
|
2851 return conf;
|
|
|
2852 }
|
|
|
2853
|
|
|
2854
|
|
|
2855 static char *
|
|
|
2856 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
2857 {
|
|
|
2858 ngx_http_mp4_conf_t *prev = parent;
|
|
|
2859 ngx_http_mp4_conf_t *conf = child;
|
|
|
2860
|
|
|
2861 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
|
2862 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
|
2863 10 * 1024 * 1024);
|
|
|
2864
|
|
|
2865 return NGX_CONF_OK;
|
|
|
2866 }
|
