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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,
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|
|
305 NGX_HTTP_LOC_CONF_OFFSET,
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|
|
306 offsetof(ngx_http_mp4_conf_t, max_buffer_size),
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|
|
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 */
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|
|
322
|
|
|
323 ngx_http_mp4_create_conf, /* create location configuration */
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|
|
324 ngx_http_mp4_merge_conf /* merge location configuration */
|
|
|
325 };
|
|
|
326
|
|
|
327
|
|
|
328 ngx_module_t ngx_http_mp4_module = {
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|
|
329 NGX_MODULE_V1,
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|
|
330 &ngx_http_mp4_module_ctx, /* module context */
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|
|
331 ngx_http_mp4_commands, /* module directives */
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|
|
332 NGX_HTTP_MODULE, /* module type */
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|
|
333 NULL, /* init master */
|
|
|
334 NULL, /* init module */
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|
|
335 NULL, /* init process */
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|
|
336 NULL, /* init thread */
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|
|
337 NULL, /* exit thread */
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|
|
338 NULL, /* exit process */
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|
|
339 NULL, /* exit master */
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|
|
340 NGX_MODULE_V1_PADDING
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|
|
341 };
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|
|
342
|
|
|
343
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|
|
344 static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = {
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345 { "ftyp", ngx_http_mp4_read_ftyp_atom },
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346 { "moov", ngx_http_mp4_read_moov_atom },
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|
347 { "mdat", ngx_http_mp4_read_mdat_atom },
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|
|
348 { NULL, NULL }
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|
|
349 };
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|
|
350
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|
|
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 };
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|
357
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|
|
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 },
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|
|
361 { NULL, NULL }
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|
|
362 };
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|
|
363
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|
|
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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|
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366 { "hdlr", ngx_http_mp4_read_hdlr_atom },
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|
367 { "minf", ngx_http_mp4_read_minf_atom },
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|
|
368 { NULL, NULL }
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|
|
369 };
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|
|
370
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|
|
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 },
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|
|
373 { "smhd", ngx_http_mp4_read_smhd_atom },
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|
|
374 { "dinf", ngx_http_mp4_read_dinf_atom },
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|
|
375 { "stbl", ngx_http_mp4_read_stbl_atom },
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|
|
376 { NULL, NULL }
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|
|
377 };
|
|
|
378
|
|
|
379 static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = {
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|
|
380 { "stsd", ngx_http_mp4_read_stsd_atom },
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|
|
381 { "stts", ngx_http_mp4_read_stts_atom },
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|
|
382 { "stss", ngx_http_mp4_read_stss_atom },
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|
|
383 { "ctts", ngx_http_mp4_read_ctts_atom },
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|
|
384 { "stsc", ngx_http_mp4_read_stsc_atom },
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|
|
385 { "stsz", ngx_http_mp4_read_stsz_atom },
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|
|
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;
|
|
|
443
|
|
|
444 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
|
|
|
445 != NGX_OK)
|
|
|
446 {
|
|
|
447 switch (of.err) {
|
|
|
448
|
|
|
449 case 0:
|
|
|
450 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
451
|
|
|
452 case NGX_ENOENT:
|
|
|
453 case NGX_ENOTDIR:
|
|
|
454 case NGX_ENAMETOOLONG:
|
|
|
455
|
|
|
456 level = NGX_LOG_ERR;
|
|
|
457 rc = NGX_HTTP_NOT_FOUND;
|
|
|
458 break;
|
|
|
459
|
|
|
460 case NGX_EACCES:
|
|
|
461
|
|
|
462 level = NGX_LOG_ERR;
|
|
|
463 rc = NGX_HTTP_FORBIDDEN;
|
|
|
464 break;
|
|
|
465
|
|
|
466 default:
|
|
|
467
|
|
|
468 level = NGX_LOG_CRIT;
|
|
|
469 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
470 break;
|
|
|
471 }
|
|
|
472
|
|
|
473 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
|
|
|
474 ngx_log_error(level, log, of.err,
|
|
|
475 "%s \"%s\" failed", of.failed, path.data);
|
|
|
476 }
|
|
|
477
|
|
|
478 return rc;
|
|
|
479 }
|
|
|
480
|
|
|
481 if (!of.is_file) {
|
|
|
482
|
|
|
483 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
|
|
|
484 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
485 ngx_close_file_n " \"%s\" failed", path.data);
|
|
|
486 }
|
|
|
487
|
|
|
488 return NGX_DECLINED;
|
|
|
489 }
|
|
|
490
|
|
|
491 r->root_tested = !r->error_page;
|
|
|
492 r->allow_ranges = 1;
|
|
|
493
|
|
|
494 start = -1;
|
|
|
495 r->headers_out.content_length_n = of.size;
|
|
|
496 mp4 = NULL;
|
|
|
497 b = NULL;
|
|
|
498
|
|
|
499 if (r->args.len) {
|
|
|
500
|
|
|
501 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
|
|
|
502
|
|
642
|
503 /*
|
|
|
504 * A Flash player may send start value with a lot of digits
|
|
|
505 * after dot so strtod() is used instead of atofp(). NaNs and
|
|
|
506 * infinities become negative numbers after (int) conversion.
|
|
|
507 */
|
|
|
508
|
|
|
509 ngx_set_errno(0);
|
|
|
510 start = (int) (strtod((char *) value.data, NULL) * 1000);
|
|
|
511
|
|
|
512 if (ngx_errno == 0 && start >= 0) {
|
|
638
|
513 r->allow_ranges = 0;
|
|
|
514
|
|
|
515 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t));
|
|
|
516 if (mp4 == NULL) {
|
|
|
517 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
518 }
|
|
|
519
|
|
|
520 mp4->file.fd = of.fd;
|
|
|
521 mp4->file.name = path;
|
|
|
522 mp4->file.log = r->connection->log;;
|
|
|
523 mp4->end = of.size;
|
|
|
524 mp4->start = (ngx_uint_t) start;
|
|
|
525 mp4->request = r;
|
|
|
526
|
|
|
527 switch (ngx_http_mp4_process(mp4)) {
|
|
|
528
|
|
|
529 case NGX_DECLINED:
|
|
|
530 if (mp4->buffer) {
|
|
|
531 ngx_pfree(r->pool, mp4->buffer);
|
|
|
532 }
|
|
|
533
|
|
|
534 ngx_pfree(r->pool, mp4);
|
|
|
535 mp4 = NULL;
|
|
|
536
|
|
|
537 break;
|
|
|
538
|
|
|
539 case NGX_OK:
|
|
|
540 r->headers_out.content_length_n = mp4->content_length;
|
|
|
541 break;
|
|
|
542
|
|
|
543 default: /* NGX_ERROR */
|
|
|
544 if (mp4->buffer) {
|
|
|
545 ngx_pfree(r->pool, mp4->buffer);
|
|
|
546 }
|
|
|
547
|
|
|
548 ngx_pfree(r->pool, mp4);
|
|
|
549
|
|
|
550 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
551 }
|
|
|
552 }
|
|
|
553 }
|
|
|
554 }
|
|
|
555
|
|
|
556 log->action = "sending mp4 to client";
|
|
|
557
|
|
|
558 if (clcf->directio <= of.size) {
|
|
|
559
|
|
|
560 /*
|
|
|
561 * DIRECTIO is set on transfer only
|
|
|
562 * to allow kernel to cache "moov" atom
|
|
|
563 */
|
|
|
564
|
|
|
565 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) {
|
|
|
566 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
567 ngx_directio_on_n " \"%s\" failed", path.data);
|
|
|
568 }
|
|
|
569
|
|
|
570 of.is_directio = 1;
|
|
|
571
|
|
|
572 if (mp4) {
|
|
|
573 mp4->file.directio = 1;
|
|
|
574 }
|
|
|
575 }
|
|
|
576
|
|
|
577 r->headers_out.status = NGX_HTTP_OK;
|
|
|
578 r->headers_out.last_modified_time = of.mtime;
|
|
|
579
|
|
|
580 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
|
581 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
582 }
|
|
|
583
|
|
|
584 if (mp4 == NULL) {
|
|
|
585 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
586 if (b == NULL) {
|
|
|
587 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
588 }
|
|
|
589
|
|
|
590 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
591 if (b->file == NULL) {
|
|
|
592 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
593 }
|
|
|
594 }
|
|
|
595
|
|
|
596 rc = ngx_http_send_header(r);
|
|
|
597
|
|
|
598 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
599 return rc;
|
|
|
600 }
|
|
|
601
|
|
|
602 if (mp4) {
|
|
|
603 return ngx_http_output_filter(r, mp4->out);
|
|
|
604 }
|
|
|
605
|
|
|
606 b->file_pos = 0;
|
|
|
607 b->file_last = of.size;
|
|
|
608
|
|
|
609 b->in_file = b->file_last ? 1 : 0;
|
|
|
610 b->last_buf = 1;
|
|
|
611 b->last_in_chain = 1;
|
|
|
612
|
|
|
613 b->file->fd = of.fd;
|
|
|
614 b->file->name = path;
|
|
|
615 b->file->log = log;
|
|
|
616 b->file->directio = of.is_directio;
|
|
|
617
|
|
|
618 out.buf = b;
|
|
|
619 out.next = NULL;
|
|
|
620
|
|
|
621 return ngx_http_output_filter(r, &out);
|
|
|
622 }
|
|
|
623
|
|
|
624
|
|
|
625 static ngx_int_t
|
|
|
626 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
|
627 {
|
|
|
628 off_t start_offset, adjustment;
|
|
|
629 ngx_int_t rc;
|
|
|
630 ngx_uint_t i, j;
|
|
|
631 ngx_chain_t **prev;
|
|
|
632 ngx_http_mp4_trak_t *trak;
|
|
|
633 ngx_http_mp4_conf_t *conf;
|
|
|
634
|
|
|
635 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
636 "mp4 start:%ui", mp4->start);
|
|
|
637
|
|
|
638 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
639
|
|
|
640 mp4->buffer_size = conf->buffer_size;
|
|
|
641
|
|
|
642 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
|
643 if (rc != NGX_OK) {
|
|
|
644 return rc;
|
|
|
645 }
|
|
|
646
|
|
|
647 if (mp4->trak.nelts == 0) {
|
|
|
648 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
649 "no mp4 trak atoms were found in \"%s\"",
|
|
|
650 mp4->file.name.data);
|
|
|
651 return NGX_ERROR;
|
|
|
652 }
|
|
|
653
|
|
|
654 if (mp4->mdat_atom.buf == NULL) {
|
|
|
655 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
656 "no mp4 mdat atom was found in \"%s\"",
|
|
|
657 mp4->file.name.data);
|
|
|
658 return NGX_ERROR;
|
|
|
659 }
|
|
|
660
|
|
|
661 prev = &mp4->out;
|
|
|
662
|
|
|
663 if (mp4->ftyp_atom.buf) {
|
|
|
664 *prev = &mp4->ftyp_atom;
|
|
|
665 prev = &mp4->ftyp_atom.next;
|
|
|
666 }
|
|
|
667
|
|
|
668 *prev = &mp4->moov_atom;
|
|
|
669 prev = &mp4->moov_atom.next;
|
|
|
670
|
|
|
671 if (mp4->mvhd_atom.buf) {
|
|
|
672 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
|
673 *prev = &mp4->mvhd_atom;
|
|
|
674 prev = &mp4->mvhd_atom.next;
|
|
|
675 }
|
|
|
676
|
|
|
677 start_offset = mp4->end;
|
|
|
678 trak = mp4->trak.elts;
|
|
|
679
|
|
|
680 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
|
681
|
|
|
682 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
683 return NGX_ERROR;
|
|
|
684 }
|
|
|
685
|
|
|
686 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
687 return NGX_ERROR;
|
|
|
688 }
|
|
|
689
|
|
|
690 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
|
691
|
|
|
692 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
693 return NGX_ERROR;
|
|
|
694 }
|
|
|
695
|
|
|
696 ngx_http_mp4_update_stsz_atom(mp4, &trak[i]);
|
|
|
697
|
|
640
|
698 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
699 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
700 return NGX_ERROR;
|
|
|
701 }
|
|
|
702
|
|
|
703 } else {
|
|
|
704 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
705 return NGX_ERROR;
|
|
|
706 }
|
|
638
|
707 }
|
|
|
708
|
|
|
709 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
|
710 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
|
711 trak[i].size += trak[i].mdhd_size;
|
|
|
712 trak[i].size += trak[i].hdlr_size;
|
|
|
713 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
|
714 trak[i].size += trak[i].tkhd_size;
|
|
|
715 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
|
716
|
|
|
717 mp4->moov_size += trak[i].size;
|
|
|
718
|
|
|
719 if (start_offset > trak[i].start_offset) {
|
|
|
720 start_offset = trak[i].start_offset;
|
|
|
721 }
|
|
|
722
|
|
|
723 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
|
724 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
|
725
|
|
|
726 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
|
727 if (trak[i].out[j].buf) {
|
|
|
728 *prev = &trak[i].out[j];
|
|
|
729 prev = &trak[i].out[j].next;
|
|
|
730 }
|
|
|
731 }
|
|
|
732 }
|
|
|
733
|
|
|
734 mp4->moov_size += 8;
|
|
|
735
|
|
|
736 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
|
737 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
|
738 mp4->content_length += mp4->moov_size;
|
|
|
739
|
|
|
740 *prev = &mp4->mdat_atom;
|
|
|
741
|
|
|
742 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
|
743 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
|
744 - start_offset;
|
|
|
745
|
|
|
746 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
747 "mp4 adjustment:%D", adjustment);
|
|
|
748
|
|
|
749 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
640
|
750 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
751 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
|
752 } else {
|
|
|
753 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
|
754 }
|
|
638
|
755 }
|
|
|
756
|
|
|
757 return NGX_OK;
|
|
|
758 }
|
|
|
759
|
|
|
760
|
|
|
761 typedef struct {
|
|
|
762 u_char size[4];
|
|
|
763 u_char name[4];
|
|
|
764 } ngx_mp4_atom_header_t;
|
|
|
765
|
|
|
766 typedef struct {
|
|
|
767 u_char size[4];
|
|
|
768 u_char name[4];
|
|
|
769 u_char size64[8];
|
|
|
770 } ngx_mp4_atom_header64_t;
|
|
|
771
|
|
|
772
|
|
|
773 static ngx_int_t
|
|
|
774 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
|
775 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
|
776 {
|
|
|
777 off_t end;
|
|
|
778 size_t atom_header_size;
|
|
|
779 u_char *atom_header, *atom_name;
|
|
|
780 uint64_t atom_size;
|
|
|
781 ngx_int_t rc;
|
|
|
782 ngx_uint_t n;
|
|
|
783
|
|
|
784 end = mp4->offset + atom_data_size;
|
|
|
785
|
|
|
786 while (mp4->offset < end) {
|
|
|
787
|
|
|
788 if (mp4->buffer_pos + sizeof(uint32_t) > mp4->buffer_end) {
|
|
|
789 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
790 return NGX_ERROR;
|
|
|
791 }
|
|
|
792 }
|
|
|
793
|
|
|
794 atom_header = mp4->buffer_pos;
|
|
|
795 atom_size = ngx_mp4_get_32value(atom_header);
|
|
|
796 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
797
|
|
|
798 if (atom_size == 0) {
|
|
|
799 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
800 "mp4 atom end");
|
|
|
801 return NGX_OK;
|
|
|
802 }
|
|
|
803
|
|
|
804 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
|
805
|
|
|
806 if (atom_size == 1) {
|
|
|
807
|
|
|
808 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header64_t)
|
|
|
809 > mp4->buffer_end)
|
|
|
810 {
|
|
|
811 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
812 return NGX_ERROR;
|
|
|
813 }
|
|
|
814
|
|
|
815 atom_header = mp4->buffer_pos;
|
|
|
816 }
|
|
|
817
|
|
|
818 /* 64-bit atom size */
|
|
|
819 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
|
820 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
821
|
|
|
822 } else {
|
|
|
823 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
824 "\"%s\" mp4 atom is too small:%uL",
|
|
|
825 mp4->file.name.data, atom_size);
|
|
|
826 return NGX_ERROR;
|
|
|
827 }
|
|
|
828 }
|
|
|
829
|
|
|
830 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header_t) > mp4->buffer_end) {
|
|
|
831 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
832 return NGX_ERROR;
|
|
|
833 }
|
|
|
834
|
|
|
835 atom_header = mp4->buffer_pos;
|
|
|
836 }
|
|
|
837
|
|
|
838 atom_name = atom_header + sizeof(uint32_t);
|
|
|
839
|
|
|
840 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
841 "mp4 atom: %*s @%O:%uL",
|
|
|
842 4, atom_name, mp4->offset, atom_size);
|
|
|
843
|
|
|
844 for (n = 0; atom[n].name; n++) {
|
|
|
845
|
|
|
846 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
|
847
|
|
|
848 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
|
849
|
|
|
850 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
|
851 if (rc != NGX_OK) {
|
|
|
852 return rc;
|
|
|
853 }
|
|
|
854
|
|
|
855 goto next;
|
|
|
856 }
|
|
|
857 }
|
|
|
858
|
|
|
859 ngx_mp4_atom_next(mp4, atom_size);
|
|
|
860
|
|
|
861 next:
|
|
|
862 continue;
|
|
|
863 }
|
|
|
864
|
|
|
865 return NGX_OK;
|
|
|
866 }
|
|
|
867
|
|
|
868
|
|
|
869 static ngx_int_t
|
|
|
870 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4)
|
|
|
871 {
|
|
|
872 ngx_int_t n;
|
|
|
873
|
|
|
874 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
|
875 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
|
876 }
|
|
|
877
|
|
|
878 if (mp4->buffer == NULL) {
|
|
|
879 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
|
880 if (mp4->buffer == NULL) {
|
|
|
881 return NGX_ERROR;
|
|
|
882 }
|
|
|
883
|
|
|
884 mp4->buffer_start = mp4->buffer;
|
|
|
885 mp4->buffer_end = mp4->buffer + mp4->buffer_size;
|
|
|
886 }
|
|
|
887
|
|
|
888 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
|
889 mp4->offset);
|
|
|
890
|
|
|
891 if (n == NGX_ERROR) {
|
|
|
892 return NGX_ERROR;
|
|
|
893 }
|
|
|
894
|
|
|
895 if (n == 0) {
|
|
|
896 return NGX_OK;
|
|
|
897 }
|
|
|
898
|
|
|
899 mp4->buffer_pos = mp4->buffer_start;
|
|
|
900
|
|
|
901 return NGX_OK;
|
|
|
902 }
|
|
|
903
|
|
|
904
|
|
|
905 static ngx_int_t
|
|
|
906 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
907 {
|
|
|
908 u_char *ftyp_atom;
|
|
|
909 size_t atom_size;
|
|
|
910 ngx_buf_t *atom;
|
|
|
911
|
|
|
912 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
|
913
|
|
|
914 if (atom_data_size > 1024) {
|
|
|
915 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
916 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
|
917 mp4->file.name.data, atom_data_size);
|
|
|
918 return NGX_ERROR;
|
|
|
919 }
|
|
|
920
|
|
|
921 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
922
|
|
|
923 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
|
924 if (ftyp_atom == NULL) {
|
|
|
925 return NGX_ERROR;
|
|
|
926 }
|
|
|
927
|
|
|
928 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
|
929 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
|
930
|
|
|
931 /*
|
|
|
932 * only moov atom content is guaranteed to be in mp4->buffer
|
|
|
933 * during sending response, so ftyp atom content should be copied
|
|
|
934 */
|
|
|
935 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
|
936 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
|
937
|
|
|
938 atom = &mp4->ftyp_atom_buf;
|
|
|
939 atom->temporary = 1;
|
|
|
940 atom->pos = ftyp_atom;
|
|
|
941 atom->last = ftyp_atom + atom_size;
|
|
|
942
|
|
|
943 mp4->ftyp_atom.buf = atom;
|
|
|
944 mp4->ftyp_size = atom_size;
|
|
|
945 mp4->content_length = atom_size;
|
|
|
946
|
|
|
947 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
948
|
|
|
949 return NGX_OK;
|
|
|
950 }
|
|
|
951
|
|
|
952
|
|
|
953 /*
|
|
|
954 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
|
955 * will be set to this buffer part after moov atom processing.
|
|
|
956 */
|
|
|
957 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
|
958
|
|
|
959 static ngx_int_t
|
|
|
960 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
961 {
|
|
|
962 ngx_int_t rc;
|
|
|
963 ngx_uint_t no_mdat;
|
|
|
964 ngx_buf_t *atom;
|
|
|
965 ngx_http_mp4_conf_t *conf;
|
|
|
966
|
|
|
967 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
|
968
|
|
|
969 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
|
970
|
|
|
971 if (no_mdat && mp4->start == 0) {
|
|
|
972 /*
|
|
|
973 * send original file if moov atom resides before
|
|
|
974 * mdat atom and client requests integral file
|
|
|
975 */
|
|
|
976 return NGX_DECLINED;
|
|
|
977 }
|
|
|
978
|
|
|
979 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
980
|
|
|
981 if (atom_data_size > mp4->buffer_size) {
|
|
|
982
|
|
|
983 if (atom_data_size > conf->max_buffer_size) {
|
|
|
984 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
985 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
|
986 "you may want to increase mp4_max_buffer_size",
|
|
|
987 mp4->file.name.data, atom_data_size);
|
|
|
988 return NGX_ERROR;
|
|
|
989 }
|
|
|
990
|
|
|
991 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
|
992 mp4->buffer = NULL;
|
|
|
993 mp4->buffer_pos = NULL;
|
|
|
994 mp4->buffer_end = NULL;
|
|
|
995
|
|
|
996 mp4->buffer_size = (size_t) atom_data_size
|
|
|
997 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
|
998 }
|
|
|
999
|
|
|
1000 mp4->trak.elts = &mp4->traks;
|
|
|
1001 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
|
1002 mp4->trak.nalloc = 2;
|
|
|
1003 mp4->trak.pool = mp4->request->pool;
|
|
|
1004
|
|
|
1005 atom = &mp4->moov_atom_buf;
|
|
|
1006 atom->temporary = 1;
|
|
|
1007 atom->pos = mp4->moov_atom_header;
|
|
|
1008 atom->last = mp4->moov_atom_header + 8;
|
|
|
1009
|
|
|
1010 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
|
1011
|
|
|
1012 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
|
1013
|
|
|
1014 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
|
1015
|
|
|
1016 if (no_mdat) {
|
|
|
1017 mp4->buffer_start = mp4->buffer_pos;
|
|
|
1018 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
|
1019
|
|
|
1020 } else {
|
|
|
1021 /* skip atoms after moov atom */
|
|
|
1022 mp4->offset = mp4->end;
|
|
|
1023 }
|
|
|
1024
|
|
|
1025 return rc;
|
|
|
1026 }
|
|
|
1027
|
|
|
1028
|
|
|
1029 static ngx_int_t
|
|
|
1030 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1031 {
|
|
|
1032 ngx_buf_t *data;
|
|
|
1033
|
|
|
1034 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
|
1035
|
|
|
1036 data = &mp4->mdat_data_buf;
|
|
|
1037 data->file = &mp4->file;
|
|
|
1038 data->in_file = 1;
|
|
|
1039 data->last_buf = 1;
|
|
|
1040 data->last_in_chain = 1;
|
|
|
1041 data->file_last = mp4->offset + atom_data_size;
|
|
|
1042
|
|
|
1043 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
|
1044 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
|
1045 mp4->mdat_data.buf = data;
|
|
|
1046
|
|
|
1047 if (mp4->trak.nelts) {
|
|
|
1048 /* skip atoms after mdat atom */
|
|
|
1049 mp4->offset = mp4->end;
|
|
|
1050
|
|
|
1051 } else {
|
|
|
1052 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1053 }
|
|
|
1054
|
|
|
1055 return NGX_OK;
|
|
|
1056 }
|
|
|
1057
|
|
|
1058
|
|
|
1059 static size_t
|
|
|
1060 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
|
1061 {
|
|
|
1062 off_t atom_data_size;
|
|
|
1063 u_char *atom_header;
|
|
|
1064 uint32_t atom_header_size;
|
|
|
1065 uint64_t atom_size;
|
|
|
1066 ngx_buf_t *atom;
|
|
|
1067
|
|
|
1068 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
|
1069 mp4->mdat_data.buf->file_pos = start_offset;
|
|
|
1070
|
|
|
1071 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1072 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
|
1073
|
|
|
1074 atom_header = mp4->mdat_atom_header;
|
|
|
1075
|
|
642
|
1076 if ((uint64_t) atom_data_size > 0xffffffff) {
|
|
638
|
1077 atom_size = 1;
|
|
|
1078 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
1079 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
|
1080 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
|
1081 } else {
|
|
|
1082 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
|
1083 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
1084 }
|
|
|
1085
|
|
648
|
1086 mp4->content_length += atom_header_size + atom_data_size;
|
|
|
1087
|
|
638
|
1088 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1089 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
|
1090
|
|
|
1091 atom = &mp4->mdat_atom_buf;
|
|
|
1092 atom->temporary = 1;
|
|
|
1093 atom->pos = atom_header;
|
|
|
1094 atom->last = atom_header + atom_header_size;
|
|
|
1095
|
|
|
1096 return atom_header_size;
|
|
|
1097 }
|
|
|
1098
|
|
|
1099
|
|
|
1100 typedef struct {
|
|
|
1101 u_char size[4];
|
|
|
1102 u_char name[4];
|
|
|
1103 u_char version[1];
|
|
|
1104 u_char flags[3];
|
|
|
1105 u_char creation_time[4];
|
|
|
1106 u_char modification_time[4];
|
|
|
1107 u_char timescale[4];
|
|
|
1108 u_char duration[4];
|
|
|
1109 u_char rate[4];
|
|
|
1110 u_char volume[2];
|
|
|
1111 u_char reserved[10];
|
|
|
1112 u_char matrix[36];
|
|
|
1113 u_char preview_time[4];
|
|
|
1114 u_char preview_duration[4];
|
|
|
1115 u_char poster_time[4];
|
|
|
1116 u_char selection_time[4];
|
|
|
1117 u_char selection_duration[4];
|
|
|
1118 u_char current_time[4];
|
|
|
1119 u_char next_track_id[4];
|
|
|
1120 } ngx_mp4_mvhd_atom_t;
|
|
|
1121
|
|
|
1122 typedef struct {
|
|
|
1123 u_char size[4];
|
|
|
1124 u_char name[4];
|
|
|
1125 u_char version[1];
|
|
|
1126 u_char flags[3];
|
|
|
1127 u_char creation_time[8];
|
|
|
1128 u_char modification_time[8];
|
|
|
1129 u_char timescale[4];
|
|
|
1130 u_char duration[8];
|
|
|
1131 u_char rate[4];
|
|
|
1132 u_char volume[2];
|
|
|
1133 u_char reserved[10];
|
|
|
1134 u_char matrix[36];
|
|
|
1135 u_char preview_time[4];
|
|
|
1136 u_char preview_duration[4];
|
|
|
1137 u_char poster_time[4];
|
|
|
1138 u_char selection_time[4];
|
|
|
1139 u_char selection_duration[4];
|
|
|
1140 u_char current_time[4];
|
|
|
1141 u_char next_track_id[4];
|
|
|
1142 } ngx_mp4_mvhd64_atom_t;
|
|
|
1143
|
|
|
1144
|
|
|
1145 static ngx_int_t
|
|
|
1146 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1147 {
|
|
|
1148 u_char *atom_header;
|
|
|
1149 size_t atom_size;
|
|
|
1150 uint32_t timescale;
|
|
|
1151 uint64_t duration;
|
|
|
1152 ngx_buf_t *atom;
|
|
|
1153 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
|
1154 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
|
1155
|
|
|
1156 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
|
1157
|
|
|
1158 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1159 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
|
1160 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
|
1161 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
|
1162
|
|
|
1163 if (mvhd_atom->version[0] == 0) {
|
|
|
1164 /* version 0: 32-bit duration */
|
|
|
1165 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
|
1166 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
|
1167
|
|
|
1168 } else {
|
|
|
1169 /* version 1: 64-bit duration */
|
|
|
1170 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
|
1171 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
|
1172 }
|
|
|
1173
|
|
|
1174 mp4->timescale = timescale;
|
|
|
1175
|
|
|
1176 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1177 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1178 timescale, duration, (double) duration / timescale);
|
|
|
1179
|
|
|
1180 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1181
|
|
|
1182 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1183 "mvhd new duration:%uL, time:%.3fs",
|
|
|
1184 duration, (double) duration / timescale);
|
|
|
1185
|
|
|
1186 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1187 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
|
1188
|
|
|
1189 if (mvhd_atom->version[0] == 0) {
|
|
|
1190 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
|
1191
|
|
|
1192 } else {
|
|
|
1193 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
|
1194 }
|
|
|
1195
|
|
|
1196 atom = &mp4->mvhd_atom_buf;
|
|
|
1197 atom->temporary = 1;
|
|
|
1198 atom->pos = atom_header;
|
|
|
1199 atom->last = atom_header + atom_size;
|
|
|
1200
|
|
|
1201 mp4->mvhd_atom.buf = atom;
|
|
|
1202
|
|
|
1203 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1204
|
|
|
1205 return NGX_OK;
|
|
|
1206 }
|
|
|
1207
|
|
|
1208
|
|
|
1209 static ngx_int_t
|
|
|
1210 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1211 {
|
|
|
1212 u_char *atom_header, *atom_end;
|
|
|
1213 off_t atom_file_end;
|
|
|
1214 ngx_int_t rc;
|
|
|
1215 ngx_buf_t *atom;
|
|
|
1216 ngx_http_mp4_trak_t *trak;
|
|
|
1217
|
|
|
1218 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
|
1219
|
|
|
1220 trak = ngx_array_push(&mp4->trak);
|
|
|
1221 if (trak == NULL) {
|
|
|
1222 return NGX_ERROR;
|
|
|
1223 }
|
|
|
1224
|
|
|
1225 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1226
|
|
|
1227 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1228 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
|
1229
|
|
|
1230 atom = &trak->trak_atom_buf;
|
|
|
1231 atom->temporary = 1;
|
|
|
1232 atom->pos = atom_header;
|
|
|
1233 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1234
|
|
|
1235 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
|
1236
|
|
|
1237 atom_end = mp4->buffer_pos + atom_data_size;
|
|
|
1238 atom_file_end = mp4->offset + atom_data_size;
|
|
|
1239
|
|
|
1240 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
|
1241
|
|
|
1242 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1243 "mp4 trak atom: %i", rc);
|
|
|
1244
|
|
|
1245 if (rc == NGX_DECLINED) {
|
|
|
1246 /* skip this trak */
|
|
|
1247 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1248 mp4->trak.nelts--;
|
|
|
1249 mp4->buffer_pos = atom_end;
|
|
|
1250 mp4->offset = atom_file_end;
|
|
|
1251 return NGX_OK;
|
|
|
1252 }
|
|
|
1253
|
|
|
1254 return rc;
|
|
|
1255 }
|
|
|
1256
|
|
|
1257
|
|
|
1258 static void
|
|
|
1259 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1260 ngx_http_mp4_trak_t *trak)
|
|
|
1261 {
|
|
|
1262 ngx_buf_t *atom;
|
|
|
1263
|
|
|
1264 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1265 atom = &trak->trak_atom_buf;
|
|
|
1266 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1267 }
|
|
|
1268
|
|
|
1269
|
|
|
1270 static ngx_int_t
|
|
|
1271 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1272 {
|
|
|
1273 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1274 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
|
1275 mp4->file.name.data);
|
|
|
1276
|
|
|
1277 return NGX_ERROR;
|
|
|
1278 }
|
|
|
1279
|
|
|
1280
|
|
|
1281 typedef struct {
|
|
|
1282 u_char size[4];
|
|
|
1283 u_char name[4];
|
|
|
1284 u_char version[1];
|
|
|
1285 u_char flags[3];
|
|
|
1286 u_char creation_time[4];
|
|
|
1287 u_char modification_time[4];
|
|
|
1288 u_char track_id[4];
|
|
|
1289 u_char reserved1[4];
|
|
|
1290 u_char duration[4];
|
|
|
1291 u_char reserved2[8];
|
|
|
1292 u_char layer[2];
|
|
|
1293 u_char group[2];
|
|
|
1294 u_char volume[2];
|
|
|
1295 u_char reverved3[2];
|
|
|
1296 u_char matrix[36];
|
|
|
1297 u_char width[4];
|
|
|
1298 u_char heigth[4];
|
|
|
1299 } ngx_mp4_tkhd_atom_t;
|
|
|
1300
|
|
|
1301 typedef struct {
|
|
|
1302 u_char size[4];
|
|
|
1303 u_char name[4];
|
|
|
1304 u_char version[1];
|
|
|
1305 u_char flags[3];
|
|
|
1306 u_char creation_time[8];
|
|
|
1307 u_char modification_time[8];
|
|
|
1308 u_char track_id[4];
|
|
|
1309 u_char reserved1[4];
|
|
|
1310 u_char duration[8];
|
|
|
1311 u_char reserved2[8];
|
|
|
1312 u_char layer[2];
|
|
|
1313 u_char group[2];
|
|
|
1314 u_char volume[2];
|
|
|
1315 u_char reverved3[2];
|
|
|
1316 u_char matrix[36];
|
|
|
1317 u_char width[4];
|
|
|
1318 u_char heigth[4];
|
|
|
1319 } ngx_mp4_tkhd64_atom_t;
|
|
|
1320
|
|
|
1321
|
|
|
1322 static ngx_int_t
|
|
|
1323 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1324 {
|
|
|
1325 u_char *atom_header;
|
|
|
1326 size_t atom_size;
|
|
|
1327 uint64_t duration;
|
|
|
1328 ngx_buf_t *atom;
|
|
|
1329 ngx_http_mp4_trak_t *trak;
|
|
|
1330 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
|
1331 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
|
1332
|
|
|
1333 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
|
1334
|
|
|
1335 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1336 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
|
1337 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
|
1338 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
|
1339
|
|
|
1340 if (tkhd_atom->version[0] == 0) {
|
|
|
1341 /* version 0: 32-bit duration */
|
|
|
1342 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
|
1343
|
|
|
1344 } else {
|
|
|
1345 /* version 1: 64-bit duration */
|
|
|
1346 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
|
1347 }
|
|
|
1348
|
|
|
1349 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1350 "tkhd duration:%uL, time:%.3fs",
|
|
|
1351 duration, (double) duration / mp4->timescale);
|
|
|
1352
|
|
|
1353 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
|
1354
|
|
|
1355 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1356 "tkhd new duration:%uL, time:%.3fs",
|
|
|
1357 duration, (double) duration / mp4->timescale);
|
|
|
1358
|
|
|
1359 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1360
|
|
|
1361 trak = ngx_mp4_last_trak(mp4);
|
|
|
1362 trak->tkhd_size = atom_size;
|
|
|
1363
|
|
|
1364 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
|
1365
|
|
|
1366 if (tkhd_atom->version[0] == 0) {
|
|
|
1367 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
|
1368
|
|
|
1369 } else {
|
|
|
1370 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
|
1371 }
|
|
|
1372
|
|
|
1373 atom = &trak->tkhd_atom_buf;
|
|
|
1374 atom->temporary = 1;
|
|
|
1375 atom->pos = atom_header;
|
|
|
1376 atom->last = atom_header + atom_size;
|
|
|
1377
|
|
|
1378 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
|
1379
|
|
|
1380 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1381
|
|
|
1382 return NGX_OK;
|
|
|
1383 }
|
|
|
1384
|
|
|
1385
|
|
|
1386 static ngx_int_t
|
|
|
1387 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1388 {
|
|
|
1389 u_char *atom_header;
|
|
|
1390 ngx_buf_t *atom;
|
|
|
1391 ngx_http_mp4_trak_t *trak;
|
|
|
1392
|
|
|
1393 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
|
1394
|
|
|
1395 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1396 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
|
1397
|
|
|
1398 trak = ngx_mp4_last_trak(mp4);
|
|
|
1399
|
|
|
1400 atom = &trak->mdia_atom_buf;
|
|
|
1401 atom->temporary = 1;
|
|
|
1402 atom->pos = atom_header;
|
|
|
1403 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1404
|
|
|
1405 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
|
1406
|
|
|
1407 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
|
1408 }
|
|
|
1409
|
|
|
1410
|
|
|
1411 static void
|
|
|
1412 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1413 ngx_http_mp4_trak_t *trak)
|
|
|
1414 {
|
|
|
1415 ngx_buf_t *atom;
|
|
|
1416
|
|
|
1417 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1418 atom = &trak->mdia_atom_buf;
|
|
|
1419 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1420 }
|
|
|
1421
|
|
|
1422
|
|
|
1423 typedef struct {
|
|
|
1424 u_char size[4];
|
|
|
1425 u_char name[4];
|
|
|
1426 u_char version[1];
|
|
|
1427 u_char flags[3];
|
|
|
1428 u_char creation_time[4];
|
|
|
1429 u_char modification_time[4];
|
|
|
1430 u_char timescale[4];
|
|
|
1431 u_char duration[4];
|
|
|
1432 u_char language[2];
|
|
|
1433 u_char quality[2];
|
|
|
1434 } ngx_mp4_mdhd_atom_t;
|
|
|
1435
|
|
|
1436 typedef struct {
|
|
|
1437 u_char size[4];
|
|
|
1438 u_char name[4];
|
|
|
1439 u_char version[1];
|
|
|
1440 u_char flags[3];
|
|
|
1441 u_char creation_time[8];
|
|
|
1442 u_char modification_time[8];
|
|
|
1443 u_char timescale[4];
|
|
|
1444 u_char duration[8];
|
|
|
1445 u_char language[2];
|
|
|
1446 u_char quality[2];
|
|
|
1447 } ngx_mp4_mdhd64_atom_t;
|
|
|
1448
|
|
|
1449
|
|
|
1450 static ngx_int_t
|
|
|
1451 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1452 {
|
|
|
1453 u_char *atom_header;
|
|
|
1454 size_t atom_size;
|
|
|
1455 uint32_t timescale;
|
|
|
1456 uint64_t duration;
|
|
|
1457 ngx_buf_t *atom;
|
|
|
1458 ngx_http_mp4_trak_t *trak;
|
|
|
1459 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
|
1460 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
|
1461
|
|
|
1462 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
|
1463
|
|
|
1464 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1465 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
|
1466 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
|
1467 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
|
1468
|
|
|
1469 if (mdhd_atom->version[0] == 0) {
|
|
|
1470 /* version 0: everything is 32-bit */
|
|
|
1471 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
|
1472 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
|
1473
|
|
|
1474 } else {
|
|
|
1475 /* version 1: 64-bit duration and 32-bit timescale */
|
|
|
1476 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
|
1477 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
|
1478 }
|
|
|
1479
|
|
|
1480 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1481 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1482 timescale, duration, (double) duration / timescale);
|
|
|
1483
|
|
|
1484 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1485
|
|
|
1486 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1487 "mdhd new duration:%uL, time:%.3fs",
|
|
|
1488 duration, (double) duration / timescale);
|
|
|
1489
|
|
|
1490 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1491
|
|
|
1492 trak = ngx_mp4_last_trak(mp4);
|
|
|
1493 trak->mdhd_size = atom_size;
|
|
|
1494 trak->timescale = timescale;
|
|
|
1495
|
|
|
1496 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
|
1497
|
|
|
1498 if (mdhd_atom->version[0] == 0) {
|
|
|
1499 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
|
1500
|
|
|
1501 } else {
|
|
|
1502 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
|
1503 }
|
|
|
1504
|
|
|
1505 atom = &trak->mdhd_atom_buf;
|
|
|
1506 atom->temporary = 1;
|
|
|
1507 atom->pos = atom_header;
|
|
|
1508 atom->last = atom_header + atom_size;
|
|
|
1509
|
|
|
1510 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
|
1511
|
|
|
1512 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1513
|
|
|
1514 return NGX_OK;
|
|
|
1515 }
|
|
|
1516
|
|
|
1517
|
|
|
1518 static ngx_int_t
|
|
|
1519 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1520 {
|
|
|
1521 u_char *atom_header;
|
|
|
1522 size_t atom_size;
|
|
|
1523 ngx_buf_t *atom;
|
|
|
1524 ngx_http_mp4_trak_t *trak;
|
|
|
1525
|
|
|
1526 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
|
1527
|
|
|
1528 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1529 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1530 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1531 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
|
1532
|
|
|
1533 trak = ngx_mp4_last_trak(mp4);
|
|
|
1534
|
|
|
1535 atom = &trak->hdlr_atom_buf;
|
|
|
1536 atom->temporary = 1;
|
|
|
1537 atom->pos = atom_header;
|
|
|
1538 atom->last = atom_header + atom_size;
|
|
|
1539
|
|
|
1540 trak->hdlr_size = atom_size;
|
|
|
1541 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
|
1542
|
|
|
1543 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1544
|
|
|
1545 return NGX_OK;
|
|
|
1546 }
|
|
|
1547
|
|
|
1548
|
|
|
1549 static ngx_int_t
|
|
|
1550 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1551 {
|
|
|
1552 u_char *atom_header;
|
|
|
1553 ngx_buf_t *atom;
|
|
|
1554 ngx_http_mp4_trak_t *trak;
|
|
|
1555
|
|
|
1556 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
|
1557
|
|
|
1558 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1559 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
|
1560
|
|
|
1561 trak = ngx_mp4_last_trak(mp4);
|
|
|
1562
|
|
|
1563 atom = &trak->minf_atom_buf;
|
|
|
1564 atom->temporary = 1;
|
|
|
1565 atom->pos = atom_header;
|
|
|
1566 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1567
|
|
|
1568 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
|
1569
|
|
|
1570 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
|
1571 }
|
|
|
1572
|
|
|
1573
|
|
|
1574 static void
|
|
|
1575 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1576 ngx_http_mp4_trak_t *trak)
|
|
|
1577 {
|
|
|
1578 ngx_buf_t *atom;
|
|
|
1579
|
|
|
1580 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
|
1581 + trak->vmhd_size
|
|
|
1582 + trak->smhd_size
|
|
|
1583 + trak->dinf_size;
|
|
|
1584 atom = &trak->minf_atom_buf;
|
|
|
1585 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1586 }
|
|
|
1587
|
|
|
1588
|
|
|
1589 static ngx_int_t
|
|
|
1590 ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1591 {
|
|
|
1592 u_char *atom_header;
|
|
|
1593 size_t atom_size;
|
|
|
1594 ngx_buf_t *atom;
|
|
|
1595 ngx_http_mp4_trak_t *trak;
|
|
|
1596
|
|
|
1597 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom");
|
|
|
1598
|
|
|
1599 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1600 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1601 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1602 ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd');
|
|
|
1603
|
|
|
1604 trak = ngx_mp4_last_trak(mp4);
|
|
|
1605
|
|
|
1606 atom = &trak->vmhd_atom_buf;
|
|
|
1607 atom->temporary = 1;
|
|
|
1608 atom->pos = atom_header;
|
|
|
1609 atom->last = atom_header + atom_size;
|
|
|
1610
|
|
|
1611 trak->vmhd_size += atom_size;
|
|
|
1612 trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom;
|
|
|
1613
|
|
|
1614 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1615
|
|
|
1616 return NGX_OK;
|
|
|
1617 }
|
|
|
1618
|
|
|
1619
|
|
|
1620 static ngx_int_t
|
|
|
1621 ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1622 {
|
|
|
1623 u_char *atom_header;
|
|
|
1624 size_t atom_size;
|
|
|
1625 ngx_buf_t *atom;
|
|
|
1626 ngx_http_mp4_trak_t *trak;
|
|
|
1627
|
|
|
1628 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
|
1629
|
|
|
1630 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1631 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1632 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1633 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
|
1634
|
|
|
1635 trak = ngx_mp4_last_trak(mp4);
|
|
|
1636
|
|
|
1637 atom = &trak->smhd_atom_buf;
|
|
|
1638 atom->temporary = 1;
|
|
|
1639 atom->pos = atom_header;
|
|
|
1640 atom->last = atom_header + atom_size;
|
|
|
1641
|
|
|
1642 trak->vmhd_size += atom_size;
|
|
|
1643 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
|
1644
|
|
|
1645 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1646
|
|
|
1647 return NGX_OK;
|
|
|
1648 }
|
|
|
1649
|
|
|
1650
|
|
|
1651 static ngx_int_t
|
|
|
1652 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1653 {
|
|
|
1654 u_char *atom_header;
|
|
|
1655 size_t atom_size;
|
|
|
1656 ngx_buf_t *atom;
|
|
|
1657 ngx_http_mp4_trak_t *trak;
|
|
|
1658
|
|
|
1659 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
|
1660
|
|
|
1661 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1662 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1663 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1664 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
|
1665
|
|
|
1666 trak = ngx_mp4_last_trak(mp4);
|
|
|
1667
|
|
|
1668 atom = &trak->dinf_atom_buf;
|
|
|
1669 atom->temporary = 1;
|
|
|
1670 atom->pos = atom_header;
|
|
|
1671 atom->last = atom_header + atom_size;
|
|
|
1672
|
|
|
1673 trak->dinf_size += atom_size;
|
|
|
1674 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
|
1675
|
|
|
1676 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1677
|
|
|
1678 return NGX_OK;
|
|
|
1679 }
|
|
|
1680
|
|
|
1681
|
|
|
1682 static ngx_int_t
|
|
|
1683 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1684 {
|
|
|
1685 u_char *atom_header;
|
|
|
1686 ngx_buf_t *atom;
|
|
|
1687 ngx_http_mp4_trak_t *trak;
|
|
|
1688
|
|
|
1689 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
|
1690
|
|
|
1691 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1692 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
|
1693
|
|
|
1694 trak = ngx_mp4_last_trak(mp4);
|
|
|
1695
|
|
|
1696 atom = &trak->stbl_atom_buf;
|
|
|
1697 atom->temporary = 1;
|
|
|
1698 atom->pos = atom_header;
|
|
|
1699 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1700
|
|
|
1701 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
|
1702
|
|
|
1703 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
|
1704 }
|
|
|
1705
|
|
|
1706
|
|
|
1707 static void
|
|
|
1708 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1709 ngx_http_mp4_trak_t *trak)
|
|
|
1710 {
|
|
|
1711 ngx_buf_t *atom;
|
|
|
1712
|
|
|
1713 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1714 atom = &trak->stbl_atom_buf;
|
|
|
1715 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1716 }
|
|
|
1717
|
|
|
1718
|
|
|
1719 typedef struct {
|
|
|
1720 u_char size[4];
|
|
|
1721 u_char name[4];
|
|
|
1722 u_char version[1];
|
|
|
1723 u_char flags[3];
|
|
|
1724 u_char entries[4];
|
|
|
1725
|
|
|
1726 u_char media_size[4];
|
|
|
1727 u_char media_name[4];
|
|
|
1728 } ngx_mp4_stsd_atom_t;
|
|
|
1729
|
|
|
1730
|
|
|
1731 static ngx_int_t
|
|
|
1732 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1733 {
|
|
|
1734 u_char *atom_header, *atom_table;
|
|
|
1735 size_t atom_size;
|
|
|
1736 ngx_buf_t *atom;
|
|
|
1737 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
|
1738 ngx_http_mp4_trak_t *trak;
|
|
|
1739
|
|
|
1740 /* sample description atom */
|
|
|
1741
|
|
|
1742 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
|
1743
|
|
|
1744 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1745 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
|
1746 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1747 atom_table = atom_header + atom_size;
|
|
|
1748 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
|
1749 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
|
1750
|
|
|
1751 if ((uint64_t) (sizeof(ngx_mp4_stsd_atom_t) - sizeof(ngx_mp4_atom_header_t))
|
|
640
|
1752 > atom_data_size)
|
|
|
1753 {
|
|
638
|
1754 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1755 "\"%s\" mp4 stsd atom too large",
|
|
|
1756 mp4->file.name.data);
|
|
|
1757 return NGX_ERROR;
|
|
|
1758 }
|
|
|
1759
|
|
|
1760 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1761 "stsd entries:%uD, media:%*s",
|
|
|
1762 ngx_mp4_get_32value(stsd_atom->entries),
|
|
|
1763 4, stsd_atom->media_name);
|
|
|
1764
|
|
|
1765 /* supported media format: "avc1" (H.264) and "mp4a" (MPEG-4/AAC) */
|
|
|
1766
|
|
|
1767 if (ngx_strncmp(stsd_atom->media_name, "avc1", 4) != 0
|
|
|
1768 && ngx_strncmp(stsd_atom->media_name, "mp4a", 4) != 0)
|
|
|
1769 {
|
|
|
1770 return NGX_DECLINED;
|
|
|
1771 }
|
|
|
1772
|
|
|
1773 trak = ngx_mp4_last_trak(mp4);
|
|
|
1774
|
|
|
1775 atom = &trak->stsd_atom_buf;
|
|
|
1776 atom->temporary = 1;
|
|
|
1777 atom->pos = atom_header;
|
|
|
1778 atom->last = atom_table;
|
|
|
1779
|
|
|
1780 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
|
1781 trak->size += atom_size;
|
|
|
1782
|
|
|
1783 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1784
|
|
|
1785 return NGX_OK;
|
|
|
1786 }
|
|
|
1787
|
|
|
1788
|
|
|
1789 typedef struct {
|
|
|
1790 u_char size[4];
|
|
|
1791 u_char name[4];
|
|
|
1792 u_char version[1];
|
|
|
1793 u_char flags[3];
|
|
|
1794 u_char entries[4];
|
|
|
1795 } ngx_mp4_stts_atom_t;
|
|
|
1796
|
|
|
1797 typedef struct {
|
|
|
1798 u_char count[4];
|
|
|
1799 u_char duration[4];
|
|
|
1800 } ngx_mp4_stts_entry_t;
|
|
|
1801
|
|
|
1802
|
|
|
1803 static ngx_int_t
|
|
|
1804 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1805 {
|
|
|
1806 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1807 uint32_t entries;
|
|
|
1808 ngx_buf_t *atom, *data;
|
|
|
1809 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1810 ngx_http_mp4_trak_t *trak;
|
|
|
1811
|
|
|
1812 /* time-to-sample atom */
|
|
|
1813
|
|
|
1814 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
|
1815
|
|
|
1816 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1817 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
|
1818 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
|
1819
|
|
|
1820 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
|
1821
|
|
|
1822 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1823 "mp4 time-to-sample entries:%uD", entries);
|
|
|
1824
|
|
|
1825 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
|
1826 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
|
1827
|
|
|
1828 if ((uint64_t) (atom_end - stts_atom->version) > atom_data_size) {
|
|
|
1829 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1830 "\"%s\" mp4 stts atom too large",
|
|
|
1831 mp4->file.name.data);
|
|
|
1832 return NGX_ERROR;
|
|
|
1833 }
|
|
|
1834
|
|
|
1835 trak = ngx_mp4_last_trak(mp4);
|
|
|
1836 trak->time_to_sample_entries = entries;
|
|
|
1837
|
|
|
1838 atom = &trak->stts_atom_buf;
|
|
|
1839 atom->temporary = 1;
|
|
|
1840 atom->pos = atom_header;
|
|
|
1841 atom->last = atom_table;
|
|
|
1842
|
|
|
1843 data = &trak->stts_data_buf;
|
|
|
1844 data->temporary = 1;
|
|
|
1845 data->pos = atom_table;
|
|
|
1846 data->last = atom_end;
|
|
|
1847
|
|
|
1848 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
|
1849 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
|
1850
|
|
|
1851 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1852
|
|
|
1853 return NGX_OK;
|
|
|
1854 }
|
|
|
1855
|
|
|
1856
|
|
|
1857 static ngx_int_t
|
|
|
1858 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1859 ngx_http_mp4_trak_t *trak)
|
|
|
1860 {
|
|
|
1861 size_t atom_size;
|
|
|
1862 uint32_t entries, count, duration;
|
|
|
1863 uint64_t start_time;
|
|
|
1864 ngx_buf_t *atom, *data;
|
|
|
1865 ngx_uint_t start_sample;
|
|
|
1866 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1867 ngx_mp4_stts_entry_t *entry, *end;
|
|
|
1868
|
|
|
1869 /*
|
|
|
1870 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
|
1871 * from mdia.mdhd atom which may reside after mdia.minf
|
|
|
1872 */
|
|
|
1873
|
|
|
1874 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1875 "mp4 stts atom update");
|
|
|
1876
|
|
|
1877 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
|
1878
|
|
|
1879 if (data == NULL) {
|
|
|
1880 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1881 "no mp4 stts atoms were found in \"%s\"",
|
|
|
1882 mp4->file.name.data);
|
|
|
1883 return NGX_ERROR;
|
|
|
1884 }
|
|
|
1885
|
|
|
1886 entries = trak->time_to_sample_entries;
|
|
644
|
1887 start_time = (uint64_t) mp4->start * trak->timescale / 1000;
|
|
638
|
1888
|
|
|
1889 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1890 "time-to-sample start_time:%uL", start_time);
|
|
|
1891
|
|
|
1892 start_sample = 0;
|
|
|
1893 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
|
1894 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
|
1895
|
|
|
1896 while (entry < end) {
|
|
|
1897 count = ngx_mp4_get_32value(entry->count);
|
|
|
1898 duration = ngx_mp4_get_32value(entry->duration);
|
|
|
1899
|
|
|
1900 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1901 "count:%uD, duration:%uD", count, duration);
|
|
|
1902
|
|
650
|
1903 if (start_time < (uint64_t) count * duration) {
|
|
638
|
1904 start_sample += (ngx_uint_t) (start_time / duration);
|
|
|
1905 count -= start_sample;
|
|
|
1906 ngx_mp4_set_32value(entry->count, count);
|
|
|
1907 goto found;
|
|
|
1908 }
|
|
|
1909
|
|
|
1910 start_sample += count;
|
|
|
1911 start_time -= count * duration;
|
|
|
1912 entries--;
|
|
|
1913 entry++;
|
|
|
1914 }
|
|
|
1915
|
|
|
1916 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1917 "start time is out mp4 stts samples in \"%s\"",
|
|
|
1918 mp4->file.name.data);
|
|
|
1919
|
|
|
1920 return NGX_ERROR;
|
|
|
1921
|
|
|
1922 found:
|
|
|
1923
|
|
|
1924 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1925 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
|
1926
|
|
|
1927 trak->start_sample = start_sample;
|
|
|
1928
|
|
|
1929 data->pos = (u_char *) entry;
|
|
|
1930 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
|
1931 trak->size += atom_size;
|
|
|
1932
|
|
|
1933 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
|
1934 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
|
1935 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
|
1936 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
|
1937
|
|
|
1938 return NGX_OK;
|
|
|
1939 }
|
|
|
1940
|
|
|
1941
|
|
|
1942 typedef struct {
|
|
|
1943 u_char size[4];
|
|
|
1944 u_char name[4];
|
|
|
1945 u_char version[1];
|
|
|
1946 u_char flags[3];
|
|
|
1947 u_char entries[4];
|
|
|
1948 } ngx_http_mp4_stss_atom_t;
|
|
|
1949
|
|
|
1950
|
|
|
1951 static ngx_int_t
|
|
|
1952 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1953 {
|
|
|
1954 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1955 uint32_t entries;
|
|
|
1956 ngx_buf_t *atom, *data;
|
|
|
1957 ngx_http_mp4_trak_t *trak;
|
|
|
1958 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
1959
|
|
|
1960 /* sync samples atom */
|
|
|
1961
|
|
|
1962 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
|
1963
|
|
|
1964 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1965 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
|
1966 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
|
1967
|
|
|
1968 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
|
1969
|
|
|
1970 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1971 "sync sample entries:%uD", entries);
|
|
|
1972
|
|
|
1973 trak = ngx_mp4_last_trak(mp4);
|
|
|
1974 trak->sync_samples_entries = entries;
|
|
|
1975
|
|
|
1976 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
|
1977
|
|
|
1978 atom = &trak->stss_atom_buf;
|
|
|
1979 atom->temporary = 1;
|
|
|
1980 atom->pos = atom_header;
|
|
|
1981 atom->last = atom_table;
|
|
|
1982
|
|
|
1983 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
1984
|
|
|
1985 if ((uint64_t) (atom_end - stss_atom->version) > atom_data_size) {
|
|
|
1986 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1987 "\"%s\" mp4 stss atom too large", mp4->file.name.data);
|
|
|
1988 return NGX_ERROR;
|
|
|
1989 }
|
|
|
1990
|
|
|
1991 data = &trak->stss_data_buf;
|
|
|
1992 data->temporary = 1;
|
|
|
1993 data->pos = atom_table;
|
|
|
1994 data->last = atom_end;
|
|
|
1995
|
|
|
1996 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
|
1997 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
|
1998
|
|
|
1999 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2000
|
|
|
2001 return NGX_OK;
|
|
|
2002 }
|
|
|
2003
|
|
|
2004
|
|
|
2005 static ngx_int_t
|
|
|
2006 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2007 ngx_http_mp4_trak_t *trak)
|
|
|
2008 {
|
|
|
2009 size_t atom_size;
|
|
|
2010 uint32_t entries, sample, start_sample, *entry, *end;
|
|
|
2011 ngx_buf_t *atom, *data;
|
|
|
2012 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2013
|
|
|
2014 /*
|
|
|
2015 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
|
2016 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2017 * atom which may reside after mdia.minf
|
|
|
2018 */
|
|
|
2019
|
|
|
2020 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2021 "mp4 stss atom update");
|
|
|
2022
|
|
|
2023 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
|
2024
|
|
|
2025 if (data == NULL) {
|
|
|
2026 return NGX_OK;
|
|
|
2027 }
|
|
|
2028
|
|
|
2029 /* sync samples starts from 1 */
|
|
|
2030 start_sample = trak->start_sample + 1;
|
|
|
2031 entries = trak->sync_samples_entries;
|
|
|
2032
|
|
|
2033 entry = (uint32_t *) data->pos;
|
|
|
2034 end = (uint32_t *) data->last;
|
|
|
2035
|
|
|
2036 while (entry < end) {
|
|
|
2037 sample = ngx_mp4_get_32value(entry);
|
|
|
2038
|
|
|
2039 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2040 "start:%uD, sync:%uD", start_sample, sample);
|
|
|
2041
|
|
|
2042 if (sample >= start_sample) {
|
|
|
2043 goto found;
|
|
|
2044 }
|
|
|
2045
|
|
|
2046 entries--;
|
|
|
2047 entry++;
|
|
|
2048 }
|
|
|
2049
|
|
|
2050 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2051 "start sample is out of mp4 stss atom in \"%s\"",
|
|
|
2052 mp4->file.name.data);
|
|
|
2053
|
|
|
2054 return NGX_ERROR;
|
|
|
2055
|
|
|
2056 found:
|
|
|
2057
|
|
|
2058 data->pos = (u_char *) entry;
|
|
|
2059
|
|
|
2060 start_sample = trak->start_sample;
|
|
|
2061
|
|
|
2062 while (entry < end) {
|
|
|
2063 sample = ngx_mp4_get_32value(entry);
|
|
|
2064 sample -= start_sample;
|
|
|
2065 ngx_mp4_set_32value(entry, sample);
|
|
|
2066 entry++;
|
|
|
2067 }
|
|
|
2068
|
|
|
2069 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
|
2070 trak->size += atom_size;
|
|
|
2071
|
|
|
2072 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
|
2073 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
|
2074
|
|
|
2075 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
|
2076 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
|
2077
|
|
|
2078 return NGX_OK;
|
|
|
2079 }
|
|
|
2080
|
|
|
2081
|
|
|
2082 typedef struct {
|
|
|
2083 u_char size[4];
|
|
|
2084 u_char name[4];
|
|
|
2085 u_char version[1];
|
|
|
2086 u_char flags[3];
|
|
|
2087 u_char entries[4];
|
|
|
2088 } ngx_mp4_ctts_atom_t;
|
|
|
2089
|
|
|
2090 typedef struct {
|
|
|
2091 u_char count[4];
|
|
|
2092 u_char offset[4];
|
|
|
2093 } ngx_mp4_ctts_entry_t;
|
|
|
2094
|
|
|
2095
|
|
|
2096 static ngx_int_t
|
|
|
2097 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2098 {
|
|
|
2099 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2100 uint32_t entries;
|
|
|
2101 ngx_buf_t *atom, *data;
|
|
|
2102 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2103 ngx_http_mp4_trak_t *trak;
|
|
|
2104
|
|
|
2105 /* composition offsets atom */
|
|
|
2106
|
|
|
2107 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
|
2108
|
|
|
2109 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2110 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
|
2111 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
|
2112
|
|
|
2113 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
|
2114
|
|
|
2115 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2116 "composition offset entries:%uD", entries);
|
|
|
2117
|
|
|
2118 trak = ngx_mp4_last_trak(mp4);
|
|
|
2119 trak->composition_offset_entries = entries;
|
|
|
2120
|
|
|
2121 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
|
2122
|
|
|
2123 atom = &trak->ctts_atom_buf;
|
|
|
2124 atom->temporary = 1;
|
|
|
2125 atom->pos = atom_header;
|
|
|
2126 atom->last = atom_table;
|
|
|
2127
|
|
|
2128 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
|
2129
|
|
|
2130 if ((uint64_t) (atom_end - ctts_atom->version) > atom_data_size) {
|
|
|
2131 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2132 "\"%s\" mp4 ctts atom too large", mp4->file.name.data);
|
|
|
2133 return NGX_ERROR;
|
|
|
2134 }
|
|
|
2135
|
|
|
2136 data = &trak->ctts_data_buf;
|
|
|
2137 data->temporary = 1;
|
|
|
2138 data->pos = atom_table;
|
|
|
2139 data->last = atom_end;
|
|
|
2140
|
|
|
2141 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
|
2142 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
|
2143
|
|
|
2144 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2145
|
|
|
2146 return NGX_OK;
|
|
|
2147 }
|
|
|
2148
|
|
|
2149
|
|
|
2150 static void
|
|
|
2151 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2152 ngx_http_mp4_trak_t *trak)
|
|
|
2153 {
|
|
|
2154 size_t atom_size;
|
|
|
2155 uint32_t entries, count, start_sample;
|
|
|
2156 ngx_buf_t *atom, *data;
|
|
|
2157 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2158 ngx_mp4_ctts_entry_t *entry, *end;
|
|
|
2159
|
|
|
2160 /*
|
|
|
2161 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
|
2162 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2163 * atom which may reside after mdia.minf
|
|
|
2164 */
|
|
|
2165
|
|
|
2166 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2167 "mp4 ctts atom update");
|
|
|
2168
|
|
|
2169 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
|
2170
|
|
|
2171 if (data == NULL) {
|
|
|
2172 return;
|
|
|
2173 }
|
|
|
2174
|
|
|
2175 /* sync samples starts from 1 */
|
|
|
2176 start_sample = trak->start_sample + 1;
|
|
|
2177 entries = trak->composition_offset_entries;
|
|
|
2178 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
|
2179 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
|
2180
|
|
|
2181 while (entry < end) {
|
|
|
2182 count = ngx_mp4_get_32value(entry->count);
|
|
|
2183
|
|
|
2184 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2185 "start:%uD, count:%uD, offset:%uD",
|
|
|
2186 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
|
2187
|
|
|
2188 if (start_sample <= count) {
|
|
|
2189 count -= (start_sample - 1);
|
|
|
2190 ngx_mp4_set_32value(entry->count, count);
|
|
|
2191 goto found;
|
|
|
2192 }
|
|
|
2193
|
|
|
2194 start_sample -= count;
|
|
|
2195 entries--;
|
|
|
2196 entry++;
|
|
|
2197 }
|
|
|
2198
|
|
|
2199 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
|
2200 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
|
2201
|
|
|
2202 return;
|
|
|
2203
|
|
|
2204 found:
|
|
|
2205
|
|
|
2206 data->pos = (u_char *) entry;
|
|
|
2207 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
|
2208 trak->size += atom_size;
|
|
|
2209
|
|
|
2210 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
|
2211 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
|
2212
|
|
|
2213 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
|
2214 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
|
2215
|
|
|
2216 return;
|
|
|
2217 }
|
|
|
2218
|
|
|
2219
|
|
|
2220 typedef struct {
|
|
|
2221 u_char size[4];
|
|
|
2222 u_char name[4];
|
|
|
2223 u_char version[1];
|
|
|
2224 u_char flags[3];
|
|
|
2225 u_char entries[4];
|
|
|
2226 } ngx_mp4_stsc_atom_t;
|
|
|
2227
|
|
|
2228
|
|
|
2229 static ngx_int_t
|
|
|
2230 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2231 {
|
|
|
2232 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2233 uint32_t entries;
|
|
|
2234 ngx_buf_t *atom, *data;
|
|
|
2235 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2236 ngx_http_mp4_trak_t *trak;
|
|
|
2237
|
|
|
2238 /* sample-to-chunk atom */
|
|
|
2239
|
|
|
2240 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
|
2241
|
|
|
2242 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2243 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
|
2244 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
|
2245
|
|
|
2246 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
|
2247
|
|
|
2248 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2249 "sample-to-chunk entries:%uD", entries);
|
|
|
2250
|
|
|
2251 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
|
2252 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2253
|
|
|
2254 if ((uint64_t) (atom_end - stsc_atom->version) > atom_data_size) {
|
|
|
2255 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2256 "\"%s\" mp4 stsc atom too large",
|
|
|
2257 mp4->file.name.data);
|
|
|
2258 return NGX_ERROR;
|
|
|
2259 }
|
|
|
2260
|
|
|
2261 trak = ngx_mp4_last_trak(mp4);
|
|
|
2262 trak->sample_to_chunk_entries = entries;
|
|
|
2263
|
|
|
2264 atom = &trak->stsc_atom_buf;
|
|
|
2265 atom->temporary = 1;
|
|
|
2266 atom->pos = atom_header;
|
|
|
2267 atom->last = atom_table;
|
|
|
2268
|
|
|
2269 data = &trak->stsc_data_buf;
|
|
|
2270 data->temporary = 1;
|
|
|
2271 data->pos = atom_table;
|
|
|
2272 data->last = atom_end;
|
|
|
2273
|
|
|
2274 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
|
2275 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
|
2276
|
|
|
2277 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2278
|
|
|
2279 return NGX_OK;
|
|
|
2280 }
|
|
|
2281
|
|
|
2282
|
|
|
2283 static ngx_int_t
|
|
|
2284 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2285 ngx_http_mp4_trak_t *trak)
|
|
|
2286 {
|
|
|
2287 size_t atom_size;
|
|
|
2288 uint32_t start_sample, entries, chunk, samples, id,
|
|
|
2289 next_chunk, n;
|
|
|
2290 ngx_buf_t *atom, *data, *buf;
|
|
|
2291 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2292 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
|
2293
|
|
|
2294 /*
|
|
|
2295 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
|
2296 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2297 * atom which may reside after mdia.minf
|
|
|
2298 */
|
|
|
2299
|
|
|
2300 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2301 "mp4 stsc atom update");
|
|
|
2302
|
|
|
2303 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
|
2304
|
|
|
2305 if (data == NULL) {
|
|
|
2306 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2307 "no mp4 stsc atoms were found in \"%s\"",
|
|
|
2308 mp4->file.name.data);
|
|
|
2309 return NGX_ERROR;
|
|
|
2310 }
|
|
|
2311
|
|
|
2312 start_sample = (uint32_t) trak->start_sample;
|
|
|
2313 entries = trak->sample_to_chunk_entries - 1;
|
|
|
2314
|
|
|
2315 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
|
2316 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
|
2317
|
|
|
2318 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2319 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2320 id = ngx_mp4_get_32value(entry->id);
|
|
|
2321 entry++;
|
|
|
2322
|
|
|
2323 while (entry < end) {
|
|
|
2324
|
|
|
2325 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2326
|
|
|
2327 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2328 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
|
2329 "samples:%uD, id:%uD",
|
|
|
2330 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
|
2331
|
|
|
2332 n = (next_chunk - chunk) * samples;
|
|
|
2333
|
|
|
2334 if (start_sample <= n) {
|
|
|
2335 goto found;
|
|
|
2336 }
|
|
|
2337
|
|
|
2338 start_sample -= n;
|
|
|
2339
|
|
|
2340 chunk = next_chunk;
|
|
|
2341 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2342 id = ngx_mp4_get_32value(entry->id);
|
|
|
2343 entries--;
|
|
|
2344 entry++;
|
|
|
2345 }
|
|
|
2346
|
|
|
2347 next_chunk = trak->chunks;
|
|
|
2348
|
|
|
2349 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2350 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
|
2351 start_sample, chunk, next_chunk - chunk, samples);
|
|
|
2352
|
|
|
2353 n = (next_chunk - chunk) * samples;
|
|
|
2354
|
|
|
2355 if (start_sample > n) {
|
|
|
2356 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2357 "start time is out mp4 stsc chunks in \"%s\"",
|
|
|
2358 mp4->file.name.data);
|
|
|
2359 return NGX_ERROR;
|
|
|
2360 }
|
|
|
2361
|
|
|
2362 found:
|
|
|
2363
|
|
|
2364 entries++;
|
|
|
2365 entry--;
|
|
|
2366
|
|
|
2367 if (samples == 0) {
|
|
|
2368 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2369 "zero number of samples in \"%s\"",
|
|
|
2370 mp4->file.name.data);
|
|
|
2371 return NGX_ERROR;
|
|
|
2372 }
|
|
|
2373
|
|
|
2374 trak->start_chunk = chunk - 1;
|
|
|
2375
|
|
|
2376 trak->start_chunk += start_sample / samples;
|
|
|
2377 trak->chunk_samples = start_sample % samples;
|
|
|
2378
|
|
|
2379 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2380 "start chunk:%ui, samples:%uD",
|
|
|
2381 trak->start_chunk, trak->chunk_samples);
|
|
|
2382
|
|
|
2383 data->pos = (u_char *) entry;
|
|
|
2384 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
|
2385
|
|
656
|
2386 ngx_mp4_set_32value(entry->chunk, 1);
|
|
|
2387
|
|
638
|
2388 if (trak->chunk_samples) {
|
|
|
2389
|
|
|
2390 first = &trak->stsc_chunk_entry;
|
|
|
2391 ngx_mp4_set_32value(first->chunk, 1);
|
|
|
2392 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
|
2393 ngx_mp4_set_32value(first->id, id);
|
|
|
2394
|
|
|
2395 buf = &trak->stsc_chunk_buf;
|
|
|
2396 buf->temporary = 1;
|
|
|
2397 buf->pos = (u_char *) first;
|
|
|
2398 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2399
|
|
|
2400 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
|
2401
|
|
|
2402 ngx_mp4_set_32value(entry->chunk, 2);
|
|
|
2403
|
|
|
2404 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2405 }
|
|
|
2406
|
|
|
2407 while (++entry < end) {
|
|
|
2408 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2409 chunk -= trak->start_chunk;
|
|
|
2410 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
|
2411 }
|
|
|
2412
|
|
|
2413 trak->size += atom_size;
|
|
|
2414
|
|
|
2415 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
|
2416 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
|
2417
|
|
|
2418 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
|
2419 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
|
2420
|
|
|
2421 return NGX_OK;
|
|
|
2422 }
|
|
|
2423
|
|
|
2424
|
|
|
2425 typedef struct {
|
|
|
2426 u_char size[4];
|
|
|
2427 u_char name[4];
|
|
|
2428 u_char version[1];
|
|
|
2429 u_char flags[3];
|
|
|
2430 u_char uniform_size[4];
|
|
|
2431 u_char entries[4];
|
|
|
2432 } ngx_mp4_stsz_atom_t;
|
|
|
2433
|
|
|
2434
|
|
|
2435 static ngx_int_t
|
|
|
2436 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2437 {
|
|
|
2438 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2439 size_t atom_size;
|
|
|
2440 uint32_t entries, size;
|
|
|
2441 ngx_buf_t *atom, *data;
|
|
|
2442 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2443 ngx_http_mp4_trak_t *trak;
|
|
|
2444
|
|
|
2445 /* sample sizes atom */
|
|
|
2446
|
|
|
2447 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
|
2448
|
|
|
2449 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2450 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
|
2451 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
|
2452
|
|
|
2453 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
|
2454 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
|
2455
|
|
|
2456 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2457 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
|
2458
|
|
|
2459 trak = ngx_mp4_last_trak(mp4);
|
|
|
2460 trak->sample_sizes_entries = entries;
|
|
|
2461
|
|
|
2462 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
|
2463
|
|
|
2464 atom = &trak->stsz_atom_buf;
|
|
|
2465 atom->temporary = 1;
|
|
|
2466 atom->pos = atom_header;
|
|
|
2467 atom->last = atom_table;
|
|
|
2468
|
|
|
2469 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
|
2470
|
|
|
2471 if (size == 0) {
|
|
|
2472 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2473
|
|
|
2474 if ((uint64_t) (atom_end - stsz_atom->version) > atom_data_size) {
|
|
|
2475 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2476 "\"%s\" mp4 stsz atom too large",
|
|
|
2477 mp4->file.name.data);
|
|
|
2478 return NGX_ERROR;
|
|
|
2479 }
|
|
|
2480
|
|
|
2481 data = &trak->stsz_data_buf;
|
|
|
2482 data->temporary = 1;
|
|
|
2483 data->pos = atom_table;
|
|
|
2484 data->last = atom_end;
|
|
|
2485
|
|
|
2486 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
|
2487
|
|
|
2488 } else {
|
|
|
2489 /* if size != 0 then all samples are the same size */
|
|
|
2490 /* TODO : chunk samples */
|
|
|
2491 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
2492 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
2493 trak->size += atom_size;
|
|
|
2494 }
|
|
|
2495
|
|
|
2496 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2497
|
|
|
2498 return NGX_OK;
|
|
|
2499 }
|
|
|
2500
|
|
|
2501
|
|
|
2502 static void
|
|
|
2503 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2504 ngx_http_mp4_trak_t *trak)
|
|
|
2505 {
|
|
|
2506 size_t atom_size;
|
|
|
2507 uint32_t *pos, *end;
|
|
|
2508 ngx_buf_t *atom, *data;
|
|
|
2509 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2510
|
|
|
2511 /*
|
|
|
2512 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
|
2513 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2514 * atom which may reside after mdia.minf
|
|
|
2515 */
|
|
|
2516
|
|
|
2517 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2518 "mp4 stsz atom update");
|
|
|
2519
|
|
|
2520 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
|
2521
|
|
|
2522 if (data) {
|
|
|
2523 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
|
2524 end = (uint32_t *) data->pos;
|
|
|
2525
|
|
|
2526 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
|
2527 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
|
2528 }
|
|
|
2529
|
|
|
2530 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
640
|
2531 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
|
638
|
2532
|
|
|
2533 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
|
2534 trak->size += atom_size;
|
|
|
2535
|
|
|
2536 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
|
2537 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
|
2538
|
|
|
2539 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
|
2540 ngx_mp4_set_32value(stsz_atom->entries,
|
|
|
2541 trak->sample_sizes_entries - trak->start_sample);
|
|
|
2542 }
|
|
|
2543 }
|
|
|
2544
|
|
|
2545
|
|
|
2546 typedef struct {
|
|
|
2547 u_char size[4];
|
|
|
2548 u_char name[4];
|
|
|
2549 u_char version[1];
|
|
|
2550 u_char flags[3];
|
|
|
2551 u_char entries[4];
|
|
|
2552 } ngx_mp4_stco_atom_t;
|
|
|
2553
|
|
|
2554
|
|
|
2555 static ngx_int_t
|
|
|
2556 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2557 {
|
|
|
2558 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2559 uint32_t entries;
|
|
|
2560 ngx_buf_t *atom, *data;
|
|
|
2561 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2562 ngx_http_mp4_trak_t *trak;
|
|
|
2563
|
|
|
2564 /* chunk offsets atom */
|
|
|
2565
|
|
|
2566 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
|
2567
|
|
|
2568 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2569 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
|
2570 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
|
2571
|
|
|
2572 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
|
2573
|
|
|
2574 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2575
|
|
|
2576 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
|
2577 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2578
|
|
|
2579 if ((uint64_t) (atom_end - stco_atom->version) > atom_data_size) {
|
|
|
2580 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2581 "\"%s\" mp4 stco atom too large", mp4->file.name.data);
|
|
|
2582 return NGX_ERROR;
|
|
|
2583 }
|
|
|
2584
|
|
|
2585 trak = ngx_mp4_last_trak(mp4);
|
|
|
2586 trak->chunks = entries;
|
|
|
2587
|
|
640
|
2588 atom = &trak->stco_atom_buf;
|
|
638
|
2589 atom->temporary = 1;
|
|
|
2590 atom->pos = atom_header;
|
|
|
2591 atom->last = atom_table;
|
|
|
2592
|
|
640
|
2593 data = &trak->stco_data_buf;
|
|
638
|
2594 data->temporary = 1;
|
|
|
2595 data->pos = atom_table;
|
|
|
2596 data->last = atom_end;
|
|
|
2597
|
|
|
2598 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
|
2599 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
|
2600
|
|
|
2601 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2602
|
|
|
2603 return NGX_OK;
|
|
|
2604 }
|
|
|
2605
|
|
|
2606
|
|
|
2607 static ngx_int_t
|
|
|
2608 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2609 ngx_http_mp4_trak_t *trak)
|
|
|
2610 {
|
|
|
2611 size_t atom_size;
|
|
|
2612 ngx_buf_t *atom, *data;
|
|
|
2613 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2614
|
|
|
2615 /*
|
|
|
2616 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
|
2617 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2618 * atom which may reside after mdia.minf
|
|
|
2619 */
|
|
|
2620
|
|
|
2621 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2622 "mp4 stco atom update");
|
|
|
2623
|
|
|
2624 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2625
|
|
|
2626 if (data == NULL) {
|
|
|
2627 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2628 "no mp4 stco atoms were found in \"%s\"",
|
|
|
2629 mp4->file.name.data);
|
|
|
2630 return NGX_ERROR;
|
|
|
2631 }
|
|
|
2632
|
|
|
2633 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
|
2634 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
|
2635 trak->size += atom_size;
|
|
|
2636
|
|
|
2637 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
|
2638 trak->start_offset += trak->chunk_samples_size;
|
|
|
2639 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
|
2640
|
|
|
2641 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2642 "start chunk offset:%uD", trak->start_offset);
|
|
|
2643
|
|
|
2644 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
|
2645 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
|
2646
|
|
|
2647 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
|
2648 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2649
|
|
|
2650 return NGX_OK;
|
|
|
2651 }
|
|
|
2652
|
|
|
2653
|
|
|
2654 static void
|
|
|
2655 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2656 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
|
2657 {
|
|
|
2658 uint32_t offset, *entry, *end;
|
|
|
2659 ngx_buf_t *data;
|
|
|
2660
|
|
|
2661 /*
|
|
|
2662 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
|
2663 * minimal start offset of all traks and new moov atom size
|
|
|
2664 */
|
|
|
2665
|
|
|
2666 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2667 "mp4 stco atom adjustment");
|
|
|
2668
|
|
|
2669 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2670 entry = (uint32_t *) data->pos;
|
|
|
2671 end = (uint32_t *) data->last;
|
|
|
2672
|
|
|
2673 while (entry < end) {
|
|
|
2674 offset = ngx_mp4_get_32value(entry);
|
|
|
2675 offset += adjustment;
|
|
|
2676 ngx_mp4_set_32value(entry, offset);
|
|
|
2677 entry++;
|
|
|
2678 }
|
|
|
2679 }
|
|
|
2680
|
|
|
2681
|
|
640
|
2682 typedef struct {
|
|
|
2683 u_char size[4];
|
|
|
2684 u_char name[4];
|
|
|
2685 u_char version[1];
|
|
|
2686 u_char flags[3];
|
|
|
2687 u_char entries[4];
|
|
|
2688 } ngx_mp4_co64_atom_t;
|
|
|
2689
|
|
|
2690
|
|
|
2691 static ngx_int_t
|
|
|
2692 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2693 {
|
|
|
2694 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2695 uint32_t entries;
|
|
|
2696 ngx_buf_t *atom, *data;
|
|
|
2697 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2698 ngx_http_mp4_trak_t *trak;
|
|
|
2699
|
|
|
2700 /* chunk offsets atom */
|
|
|
2701
|
|
|
2702 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
|
|
|
2703
|
|
|
2704 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2705 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
|
|
|
2706 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
|
|
|
2707
|
|
|
2708 entries = ngx_mp4_get_32value(co64_atom->entries);
|
|
|
2709
|
|
|
2710 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2711
|
|
|
2712 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
|
|
|
2713 atom_end = atom_table + entries * sizeof(uint64_t);
|
|
|
2714
|
|
|
2715 if ((uint64_t) (atom_end - co64_atom->version) > atom_data_size) {
|
|
|
2716 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2717 "\"%s\" mp4 co64 atom too large", mp4->file.name.data);
|
|
|
2718 return NGX_ERROR;
|
|
|
2719 }
|
|
|
2720
|
|
|
2721 trak = ngx_mp4_last_trak(mp4);
|
|
|
2722 trak->chunks = entries;
|
|
|
2723
|
|
|
2724 atom = &trak->co64_atom_buf;
|
|
|
2725 atom->temporary = 1;
|
|
|
2726 atom->pos = atom_header;
|
|
|
2727 atom->last = atom_table;
|
|
|
2728
|
|
|
2729 data = &trak->co64_data_buf;
|
|
|
2730 data->temporary = 1;
|
|
|
2731 data->pos = atom_table;
|
|
|
2732 data->last = atom_end;
|
|
|
2733
|
|
|
2734 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
|
|
|
2735 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
|
|
|
2736
|
|
|
2737 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2738
|
|
|
2739 return NGX_OK;
|
|
|
2740 }
|
|
|
2741
|
|
|
2742
|
|
|
2743 static ngx_int_t
|
|
|
2744 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2745 ngx_http_mp4_trak_t *trak)
|
|
|
2746 {
|
|
|
2747 size_t atom_size;
|
|
|
2748 ngx_buf_t *atom, *data;
|
|
|
2749 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2750
|
|
|
2751 /*
|
|
|
2752 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
|
2753 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2754 * atom which may reside after mdia.minf
|
|
|
2755 */
|
|
|
2756
|
|
|
2757 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2758 "mp4 co64 atom update");
|
|
|
2759
|
|
|
2760 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2761
|
|
|
2762 if (data == NULL) {
|
|
|
2763 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2764 "no mp4 co64 atoms were found in \"%s\"",
|
|
|
2765 mp4->file.name.data);
|
|
|
2766 return NGX_ERROR;
|
|
|
2767 }
|
|
|
2768
|
|
|
2769 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
|
2770 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
|
2771 trak->size += atom_size;
|
|
|
2772
|
|
|
2773 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
|
2774 trak->start_offset += trak->chunk_samples_size;
|
|
|
2775 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
|
2776
|
|
|
2777 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2778 "start chunk offset:%uL", trak->start_offset);
|
|
|
2779
|
|
|
2780 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
|
2781 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
|
2782
|
|
|
2783 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
|
2784 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2785
|
|
|
2786 return NGX_OK;
|
|
|
2787 }
|
|
|
2788
|
|
|
2789
|
|
|
2790 static void
|
|
|
2791 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2792 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
|
2793 {
|
|
|
2794 uint64_t offset, *entry, *end;
|
|
|
2795 ngx_buf_t *data;
|
|
|
2796
|
|
|
2797 /*
|
|
|
2798 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
|
2799 * minimal start offset of all traks and new moov atom size
|
|
|
2800 */
|
|
|
2801
|
|
|
2802 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2803 "mp4 co64 atom adjustment");
|
|
|
2804
|
|
|
2805 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2806 entry = (uint64_t *) data->pos;
|
|
|
2807 end = (uint64_t *) data->last;
|
|
|
2808
|
|
|
2809 while (entry < end) {
|
|
|
2810 offset = ngx_mp4_get_64value(entry);
|
|
|
2811 offset += adjustment;
|
|
|
2812 ngx_mp4_set_64value(entry, offset);
|
|
|
2813 entry++;
|
|
|
2814 }
|
|
|
2815 }
|
|
|
2816
|
|
|
2817
|
|
638
|
2818 static char *
|
|
|
2819 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2820 {
|
|
|
2821 ngx_http_core_loc_conf_t *clcf;
|
|
|
2822
|
|
|
2823 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
2824 clcf->handler = ngx_http_mp4_handler;
|
|
|
2825
|
|
|
2826 return NGX_CONF_OK;
|
|
|
2827 }
|
|
|
2828
|
|
|
2829
|
|
|
2830 static void *
|
|
|
2831 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
|
2832 {
|
|
|
2833 ngx_http_mp4_conf_t *conf;
|
|
|
2834
|
|
|
2835 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
|
2836 if (conf == NULL) {
|
|
|
2837 return NULL;
|
|
|
2838 }
|
|
|
2839
|
|
|
2840 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2841 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2842
|
|
|
2843 return conf;
|
|
|
2844 }
|
|
|
2845
|
|
|
2846
|
|
|
2847 static char *
|
|
|
2848 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
2849 {
|
|
|
2850 ngx_http_mp4_conf_t *prev = parent;
|
|
|
2851 ngx_http_mp4_conf_t *conf = child;
|
|
|
2852
|
|
|
2853 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
|
2854 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
|
2855 10 * 1024 * 1024);
|
|
|
2856
|
|
|
2857 return NGX_CONF_OK;
|
|
|
2858 }
|
