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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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4 */
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5
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6 #include <ngx_config.h>
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7 #include <ngx_core.h>
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8 #include <ngx_http.h>
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9
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10
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11 #define NGX_HTTP_MP4_TRAK_ATOM 0
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12 #define NGX_HTTP_MP4_TKHD_ATOM 1
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13 #define NGX_HTTP_MP4_MDIA_ATOM 2
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14 #define NGX_HTTP_MP4_MDHD_ATOM 3
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15 #define NGX_HTTP_MP4_HDLR_ATOM 4
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16 #define NGX_HTTP_MP4_MINF_ATOM 5
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17 #define NGX_HTTP_MP4_VMHD_ATOM 6
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18 #define NGX_HTTP_MP4_SMHD_ATOM 7
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19 #define NGX_HTTP_MP4_DINF_ATOM 8
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20 #define NGX_HTTP_MP4_STBL_ATOM 9
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21 #define NGX_HTTP_MP4_STSD_ATOM 10
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22 #define NGX_HTTP_MP4_STTS_ATOM 11
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23 #define NGX_HTTP_MP4_STTS_DATA 12
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24 #define NGX_HTTP_MP4_STSS_ATOM 13
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25 #define NGX_HTTP_MP4_STSS_DATA 14
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26 #define NGX_HTTP_MP4_CTTS_ATOM 15
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27 #define NGX_HTTP_MP4_CTTS_DATA 16
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28 #define NGX_HTTP_MP4_STSC_ATOM 17
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29 #define NGX_HTTP_MP4_STSC_CHUNK 18
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30 #define NGX_HTTP_MP4_STSC_DATA 19
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31 #define NGX_HTTP_MP4_STSZ_ATOM 20
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32 #define NGX_HTTP_MP4_STSZ_DATA 21
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33 #define NGX_HTTP_MP4_STCO_ATOM 22
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34 #define NGX_HTTP_MP4_STCO_DATA 23
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640
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35 #define NGX_HTTP_MP4_CO64_ATOM 24
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36 #define NGX_HTTP_MP4_CO64_DATA 25
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37
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38 #define NGX_HTTP_MP4_LAST_ATOM NGX_HTTP_MP4_CO64_DATA
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638
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39
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40
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41 typedef struct {
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42 size_t buffer_size;
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43 size_t max_buffer_size;
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44 } ngx_http_mp4_conf_t;
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45
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46
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47 typedef struct {
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48 u_char chunk[4];
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49 u_char samples[4];
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50 u_char id[4];
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51 } ngx_mp4_stsc_entry_t;
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52
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53
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54 typedef struct {
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55 uint32_t timescale;
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56 uint32_t time_to_sample_entries;
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57 uint32_t sample_to_chunk_entries;
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58 uint32_t sync_samples_entries;
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59 uint32_t composition_offset_entries;
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60 uint32_t sample_sizes_entries;
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61 uint32_t chunks;
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62
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63 ngx_uint_t start_sample;
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64 ngx_uint_t start_chunk;
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65 ngx_uint_t chunk_samples;
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640
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66 uint64_t chunk_samples_size;
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638
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67 off_t start_offset;
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68
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69 size_t tkhd_size;
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70 size_t mdhd_size;
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71 size_t hdlr_size;
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72 size_t vmhd_size;
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73 size_t smhd_size;
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74 size_t dinf_size;
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75 size_t size;
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76
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77 ngx_chain_t out[NGX_HTTP_MP4_LAST_ATOM + 1];
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78
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79 ngx_buf_t trak_atom_buf;
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80 ngx_buf_t tkhd_atom_buf;
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81 ngx_buf_t mdia_atom_buf;
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82 ngx_buf_t mdhd_atom_buf;
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83 ngx_buf_t hdlr_atom_buf;
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84 ngx_buf_t minf_atom_buf;
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85 ngx_buf_t vmhd_atom_buf;
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86 ngx_buf_t smhd_atom_buf;
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87 ngx_buf_t dinf_atom_buf;
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88 ngx_buf_t stbl_atom_buf;
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89 ngx_buf_t stsd_atom_buf;
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90 ngx_buf_t stts_atom_buf;
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91 ngx_buf_t stts_data_buf;
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92 ngx_buf_t stss_atom_buf;
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93 ngx_buf_t stss_data_buf;
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94 ngx_buf_t ctts_atom_buf;
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95 ngx_buf_t ctts_data_buf;
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96 ngx_buf_t stsc_atom_buf;
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97 ngx_buf_t stsc_chunk_buf;
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98 ngx_buf_t stsc_data_buf;
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99 ngx_buf_t stsz_atom_buf;
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100 ngx_buf_t stsz_data_buf;
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640
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101 ngx_buf_t stco_atom_buf;
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102 ngx_buf_t stco_data_buf;
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103 ngx_buf_t co64_atom_buf;
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104 ngx_buf_t co64_data_buf;
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638
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105
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106 ngx_mp4_stsc_entry_t stsc_chunk_entry;
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107 } ngx_http_mp4_trak_t;
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108
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109
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110 typedef struct {
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111 ngx_file_t file;
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112
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113 u_char *buffer;
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114 u_char *buffer_start;
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115 u_char *buffer_pos;
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116 u_char *buffer_end;
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117 size_t buffer_size;
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118
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119 off_t offset;
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120 off_t end;
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121 off_t content_length;
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122 ngx_uint_t start;
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123 uint32_t timescale;
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124 ngx_http_request_t *request;
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125 ngx_array_t trak;
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126 ngx_http_mp4_trak_t traks[2];
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127
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128 size_t ftyp_size;
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129 size_t moov_size;
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130
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131 ngx_chain_t *out;
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132 ngx_chain_t ftyp_atom;
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133 ngx_chain_t moov_atom;
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134 ngx_chain_t mvhd_atom;
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135 ngx_chain_t mdat_atom;
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136 ngx_chain_t mdat_data;
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137
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138 ngx_buf_t ftyp_atom_buf;
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139 ngx_buf_t moov_atom_buf;
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140 ngx_buf_t mvhd_atom_buf;
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141 ngx_buf_t mdat_atom_buf;
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142 ngx_buf_t mdat_data_buf;
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143
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144 u_char moov_atom_header[8];
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145 u_char mdat_atom_header[16];
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146 } ngx_http_mp4_file_t;
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147
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148
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149 typedef struct {
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150 char *name;
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151 ngx_int_t (*handler)(ngx_http_mp4_file_t *mp4,
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152 uint64_t atom_data_size);
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153 } ngx_http_mp4_atom_handler_t;
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154
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155
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156 #define ngx_mp4_atom_header(mp4) (mp4->buffer_pos - 8)
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157 #define ngx_mp4_atom_data(mp4) mp4->buffer_pos
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158 #define ngx_mp4_atom_next(mp4, n) mp4->buffer_pos += n; mp4->offset += n
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159
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160
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161 #define ngx_mp4_set_atom_name(p, n1, n2, n3, n4) \
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162 ((u_char *) (p))[4] = n1; \
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163 ((u_char *) (p))[5] = n2; \
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164 ((u_char *) (p))[6] = n3; \
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165 ((u_char *) (p))[7] = n4
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166
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167 #define ngx_mp4_get_32value(p) \
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168 ( (((u_char *) (p))[0] << 24) \
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169 + (((u_char *) (p))[1] << 16) \
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170 + (((u_char *) (p))[2] << 8) \
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171 + (((u_char *) (p))[3]) )
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172
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173 #define ngx_mp4_set_32value(p, n) \
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174 ((u_char *) (p))[0] = (u_char) ((n) >> 24); \
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175 ((u_char *) (p))[1] = (u_char) ((n) >> 16); \
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176 ((u_char *) (p))[2] = (u_char) ((n) >> 8); \
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177 ((u_char *) (p))[3] = (u_char) (n)
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178
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179 #define ngx_mp4_get_64value(p) \
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180 ( ((uint64_t) ((u_char *) (p))[0] << 56) \
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181 + ((uint64_t) ((u_char *) (p))[1] << 48) \
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182 + ((uint64_t) ((u_char *) (p))[2] << 40) \
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183 + ((uint64_t) ((u_char *) (p))[3] << 32) \
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184 + ((uint64_t) ((u_char *) (p))[4] << 24) \
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185 + ( ((u_char *) (p))[5] << 16) \
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186 + ( ((u_char *) (p))[6] << 8) \
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187 + ( ((u_char *) (p))[7]) )
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188
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189 #define ngx_mp4_set_64value(p, n) \
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190 ((u_char *) (p))[0] = (u_char) ((n) >> 56); \
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191 ((u_char *) (p))[1] = (u_char) ((n) >> 48); \
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192 ((u_char *) (p))[2] = (u_char) ((n) >> 40); \
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193 ((u_char *) (p))[3] = (u_char) ((n) >> 32); \
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194 ((u_char *) (p))[4] = (u_char) ((n) >> 24); \
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195 ((u_char *) (p))[5] = (u_char) ((n) >> 16); \
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196 ((u_char *) (p))[6] = (u_char) ((n) >> 8); \
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197 ((u_char *) (p))[7] = (u_char) (n)
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198
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199 #define ngx_mp4_last_trak(mp4) \
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200 &((ngx_http_mp4_trak_t *) mp4->trak.elts)[mp4->trak.nelts - 1]
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201
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202
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203 static ngx_int_t ngx_http_mp4_process(ngx_http_mp4_file_t *mp4);
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204 static ngx_int_t ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
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205 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size);
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206 static ngx_int_t ngx_http_mp4_read(ngx_http_mp4_file_t *mp4);
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207 static ngx_int_t ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4,
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208 uint64_t atom_data_size);
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209 static ngx_int_t ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4,
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210 uint64_t atom_data_size);
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211 static ngx_int_t ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4,
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212 uint64_t atom_data_size);
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213 static size_t ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4,
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214 off_t start_offset);
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215 static ngx_int_t ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4,
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216 uint64_t atom_data_size);
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217 static ngx_int_t ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4,
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218 uint64_t atom_data_size);
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219 static void ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
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220 ngx_http_mp4_trak_t *trak);
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221 static ngx_int_t ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4,
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222 uint64_t atom_data_size);
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223 static ngx_int_t ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4,
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224 uint64_t atom_data_size);
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225 static ngx_int_t ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4,
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226 uint64_t atom_data_size);
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227 static void ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
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228 ngx_http_mp4_trak_t *trak);
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229 static ngx_int_t ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4,
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230 uint64_t atom_data_size);
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231 static ngx_int_t ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4,
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232 uint64_t atom_data_size);
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233 static ngx_int_t ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4,
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234 uint64_t atom_data_size);
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235 static void ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
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236 ngx_http_mp4_trak_t *trak);
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237 static ngx_int_t ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4,
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238 uint64_t atom_data_size);
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239 static ngx_int_t ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4,
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240 uint64_t atom_data_size);
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241 static ngx_int_t ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4,
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242 uint64_t atom_data_size);
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243 static ngx_int_t ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4,
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244 uint64_t atom_data_size);
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245 static void ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
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246 ngx_http_mp4_trak_t *trak);
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247 static ngx_int_t ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4,
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248 uint64_t atom_data_size);
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249 static ngx_int_t ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4,
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250 uint64_t atom_data_size);
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251 static ngx_int_t ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
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252 ngx_http_mp4_trak_t *trak);
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253 static ngx_int_t ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4,
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254 uint64_t atom_data_size);
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255 static ngx_int_t ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
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256 ngx_http_mp4_trak_t *trak);
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257 static ngx_int_t ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4,
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258 uint64_t atom_data_size);
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259 static void ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
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260 ngx_http_mp4_trak_t *trak);
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261 static ngx_int_t ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4,
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262 uint64_t atom_data_size);
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263 static ngx_int_t ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
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264 ngx_http_mp4_trak_t *trak);
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265 static ngx_int_t ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4,
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266 uint64_t atom_data_size);
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267 static void ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
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268 ngx_http_mp4_trak_t *trak);
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269 static ngx_int_t ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4,
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270 uint64_t atom_data_size);
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271 static ngx_int_t ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
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272 ngx_http_mp4_trak_t *trak);
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273 static void ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
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274 ngx_http_mp4_trak_t *trak, int32_t adjustment);
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640
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275 static ngx_int_t ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4,
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276 uint64_t atom_data_size);
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277 static ngx_int_t ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
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278 ngx_http_mp4_trak_t *trak);
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279 static void ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
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280 ngx_http_mp4_trak_t *trak, off_t adjustment);
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638
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281 static char *ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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282 static void *ngx_http_mp4_create_conf(ngx_conf_t *cf);
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283 static char *ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child);
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284
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285 static ngx_command_t ngx_http_mp4_commands[] = {
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286
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287 { ngx_string("mp4"),
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288 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
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289 ngx_http_mp4,
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290 0,
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291 0,
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292 NULL },
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293
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294 { ngx_string("mp4_buffer_size"),
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295 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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296 ngx_conf_set_size_slot,
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297 NGX_HTTP_LOC_CONF_OFFSET,
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298 offsetof(ngx_http_mp4_conf_t, buffer_size),
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299 NULL },
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300
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301 { ngx_string("mp4_max_buffer_size"),
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302 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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303 ngx_conf_set_size_slot,
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304 NGX_HTTP_LOC_CONF_OFFSET,
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305 offsetof(ngx_http_mp4_conf_t, max_buffer_size),
|
|
|
306 NULL },
|
|
|
307
|
|
|
308 ngx_null_command
|
|
|
309 };
|
|
|
310
|
|
|
311
|
|
|
312 static ngx_http_module_t ngx_http_mp4_module_ctx = {
|
|
|
313 NULL, /* preconfiguration */
|
|
|
314 NULL, /* postconfiguration */
|
|
|
315
|
|
|
316 NULL, /* create main configuration */
|
|
|
317 NULL, /* init main configuration */
|
|
|
318
|
|
|
319 NULL, /* create server configuration */
|
|
|
320 NULL, /* merge server configuration */
|
|
|
321
|
|
|
322 ngx_http_mp4_create_conf, /* create location configuration */
|
|
|
323 ngx_http_mp4_merge_conf /* merge location configuration */
|
|
|
324 };
|
|
|
325
|
|
|
326
|
|
|
327 ngx_module_t ngx_http_mp4_module = {
|
|
|
328 NGX_MODULE_V1,
|
|
|
329 &ngx_http_mp4_module_ctx, /* module context */
|
|
|
330 ngx_http_mp4_commands, /* module directives */
|
|
|
331 NGX_HTTP_MODULE, /* module type */
|
|
|
332 NULL, /* init master */
|
|
|
333 NULL, /* init module */
|
|
|
334 NULL, /* init process */
|
|
|
335 NULL, /* init thread */
|
|
|
336 NULL, /* exit thread */
|
|
|
337 NULL, /* exit process */
|
|
|
338 NULL, /* exit master */
|
|
|
339 NGX_MODULE_V1_PADDING
|
|
|
340 };
|
|
|
341
|
|
|
342
|
|
|
343 static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = {
|
|
|
344 { "ftyp", ngx_http_mp4_read_ftyp_atom },
|
|
|
345 { "moov", ngx_http_mp4_read_moov_atom },
|
|
|
346 { "mdat", ngx_http_mp4_read_mdat_atom },
|
|
|
347 { NULL, NULL }
|
|
|
348 };
|
|
|
349
|
|
|
350 static ngx_http_mp4_atom_handler_t ngx_http_mp4_moov_atoms[] = {
|
|
|
351 { "mvhd", ngx_http_mp4_read_mvhd_atom },
|
|
|
352 { "trak", ngx_http_mp4_read_trak_atom },
|
|
|
353 { "cmov", ngx_http_mp4_read_cmov_atom },
|
|
|
354 { NULL, NULL }
|
|
|
355 };
|
|
|
356
|
|
|
357 static ngx_http_mp4_atom_handler_t ngx_http_mp4_trak_atoms[] = {
|
|
|
358 { "tkhd", ngx_http_mp4_read_tkhd_atom },
|
|
|
359 { "mdia", ngx_http_mp4_read_mdia_atom },
|
|
|
360 { NULL, NULL }
|
|
|
361 };
|
|
|
362
|
|
|
363 static ngx_http_mp4_atom_handler_t ngx_http_mp4_mdia_atoms[] = {
|
|
|
364 { "mdhd", ngx_http_mp4_read_mdhd_atom },
|
|
|
365 { "hdlr", ngx_http_mp4_read_hdlr_atom },
|
|
|
366 { "minf", ngx_http_mp4_read_minf_atom },
|
|
|
367 { NULL, NULL }
|
|
|
368 };
|
|
|
369
|
|
|
370 static ngx_http_mp4_atom_handler_t ngx_http_mp4_minf_atoms[] = {
|
|
|
371 { "vmhd", ngx_http_mp4_read_vmhd_atom },
|
|
|
372 { "smhd", ngx_http_mp4_read_smhd_atom },
|
|
|
373 { "dinf", ngx_http_mp4_read_dinf_atom },
|
|
|
374 { "stbl", ngx_http_mp4_read_stbl_atom },
|
|
|
375 { NULL, NULL }
|
|
|
376 };
|
|
|
377
|
|
|
378 static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = {
|
|
|
379 { "stsd", ngx_http_mp4_read_stsd_atom },
|
|
|
380 { "stts", ngx_http_mp4_read_stts_atom },
|
|
|
381 { "stss", ngx_http_mp4_read_stss_atom },
|
|
|
382 { "ctts", ngx_http_mp4_read_ctts_atom },
|
|
|
383 { "stsc", ngx_http_mp4_read_stsc_atom },
|
|
|
384 { "stsz", ngx_http_mp4_read_stsz_atom },
|
|
|
385 { "stco", ngx_http_mp4_read_stco_atom },
|
|
640
|
386 { "co64", ngx_http_mp4_read_co64_atom },
|
|
638
|
387 { NULL, NULL }
|
|
|
388 };
|
|
|
389
|
|
|
390
|
|
|
391 static ngx_int_t
|
|
|
392 ngx_http_mp4_handler(ngx_http_request_t *r)
|
|
|
393 {
|
|
|
394 u_char *last;
|
|
|
395 size_t root;
|
|
|
396 ngx_int_t rc, start;
|
|
|
397 ngx_uint_t level;
|
|
|
398 ngx_str_t path, value;
|
|
|
399 ngx_log_t *log;
|
|
|
400 ngx_buf_t *b;
|
|
|
401 ngx_chain_t out;
|
|
|
402 ngx_http_mp4_file_t *mp4;
|
|
|
403 ngx_open_file_info_t of;
|
|
|
404 ngx_http_core_loc_conf_t *clcf;
|
|
|
405
|
|
|
406 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
|
|
407 return NGX_HTTP_NOT_ALLOWED;
|
|
|
408 }
|
|
|
409
|
|
|
410 if (r->uri.data[r->uri.len - 1] == '/') {
|
|
|
411 return NGX_DECLINED;
|
|
|
412 }
|
|
|
413
|
|
|
414 rc = ngx_http_discard_request_body(r);
|
|
|
415
|
|
|
416 if (rc != NGX_OK) {
|
|
|
417 return rc;
|
|
|
418 }
|
|
|
419
|
|
|
420 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
421 if (last == NULL) {
|
|
|
422 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
423 }
|
|
|
424
|
|
|
425 log = r->connection->log;
|
|
|
426
|
|
|
427 path.len = last - path.data;
|
|
|
428
|
|
|
429 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
|
|
|
430 "http mp4 filename: \"%V\"", &path);
|
|
|
431
|
|
|
432 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
433
|
|
|
434 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
|
|
|
435
|
|
|
436 of.read_ahead = clcf->read_ahead;
|
|
|
437 of.directio = NGX_MAX_OFF_T_VALUE;
|
|
|
438 of.valid = clcf->open_file_cache_valid;
|
|
|
439 of.min_uses = clcf->open_file_cache_min_uses;
|
|
|
440 of.errors = clcf->open_file_cache_errors;
|
|
|
441 of.events = clcf->open_file_cache_events;
|
|
|
442
|
|
|
443 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
|
|
|
444 != NGX_OK)
|
|
|
445 {
|
|
|
446 switch (of.err) {
|
|
|
447
|
|
|
448 case 0:
|
|
|
449 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
450
|
|
|
451 case NGX_ENOENT:
|
|
|
452 case NGX_ENOTDIR:
|
|
|
453 case NGX_ENAMETOOLONG:
|
|
|
454
|
|
|
455 level = NGX_LOG_ERR;
|
|
|
456 rc = NGX_HTTP_NOT_FOUND;
|
|
|
457 break;
|
|
|
458
|
|
|
459 case NGX_EACCES:
|
|
|
460
|
|
|
461 level = NGX_LOG_ERR;
|
|
|
462 rc = NGX_HTTP_FORBIDDEN;
|
|
|
463 break;
|
|
|
464
|
|
|
465 default:
|
|
|
466
|
|
|
467 level = NGX_LOG_CRIT;
|
|
|
468 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
469 break;
|
|
|
470 }
|
|
|
471
|
|
|
472 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
|
|
|
473 ngx_log_error(level, log, of.err,
|
|
|
474 "%s \"%s\" failed", of.failed, path.data);
|
|
|
475 }
|
|
|
476
|
|
|
477 return rc;
|
|
|
478 }
|
|
|
479
|
|
|
480 if (!of.is_file) {
|
|
|
481
|
|
|
482 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
|
|
|
483 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
484 ngx_close_file_n " \"%s\" failed", path.data);
|
|
|
485 }
|
|
|
486
|
|
|
487 return NGX_DECLINED;
|
|
|
488 }
|
|
|
489
|
|
|
490 r->root_tested = !r->error_page;
|
|
|
491 r->allow_ranges = 1;
|
|
|
492
|
|
|
493 start = -1;
|
|
|
494 r->headers_out.content_length_n = of.size;
|
|
|
495 mp4 = NULL;
|
|
|
496 b = NULL;
|
|
|
497
|
|
|
498 if (r->args.len) {
|
|
|
499
|
|
|
500 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
|
|
|
501
|
|
|
502 start = ngx_atofp(value.data, value.len, 3);
|
|
|
503
|
|
|
504 if (start != NGX_ERROR) {
|
|
|
505 r->allow_ranges = 0;
|
|
|
506
|
|
|
507 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t));
|
|
|
508 if (mp4 == NULL) {
|
|
|
509 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
510 }
|
|
|
511
|
|
|
512 mp4->file.fd = of.fd;
|
|
|
513 mp4->file.name = path;
|
|
|
514 mp4->file.log = r->connection->log;;
|
|
|
515 mp4->end = of.size;
|
|
|
516 mp4->start = (ngx_uint_t) start;
|
|
|
517 mp4->request = r;
|
|
|
518
|
|
|
519 switch (ngx_http_mp4_process(mp4)) {
|
|
|
520
|
|
|
521 case NGX_DECLINED:
|
|
|
522 if (mp4->buffer) {
|
|
|
523 ngx_pfree(r->pool, mp4->buffer);
|
|
|
524 }
|
|
|
525
|
|
|
526 ngx_pfree(r->pool, mp4);
|
|
|
527 mp4 = NULL;
|
|
|
528
|
|
|
529 break;
|
|
|
530
|
|
|
531 case NGX_OK:
|
|
|
532 r->headers_out.content_length_n = mp4->content_length;
|
|
|
533 break;
|
|
|
534
|
|
|
535 default: /* NGX_ERROR */
|
|
|
536 if (mp4->buffer) {
|
|
|
537 ngx_pfree(r->pool, mp4->buffer);
|
|
|
538 }
|
|
|
539
|
|
|
540 ngx_pfree(r->pool, mp4);
|
|
|
541
|
|
|
542 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
543 }
|
|
|
544 }
|
|
|
545 }
|
|
|
546 }
|
|
|
547
|
|
|
548 log->action = "sending mp4 to client";
|
|
|
549
|
|
|
550 if (clcf->directio <= of.size) {
|
|
|
551
|
|
|
552 /*
|
|
|
553 * DIRECTIO is set on transfer only
|
|
|
554 * to allow kernel to cache "moov" atom
|
|
|
555 */
|
|
|
556
|
|
|
557 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) {
|
|
|
558 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
559 ngx_directio_on_n " \"%s\" failed", path.data);
|
|
|
560 }
|
|
|
561
|
|
|
562 of.is_directio = 1;
|
|
|
563
|
|
|
564 if (mp4) {
|
|
|
565 mp4->file.directio = 1;
|
|
|
566 }
|
|
|
567 }
|
|
|
568
|
|
|
569 r->headers_out.status = NGX_HTTP_OK;
|
|
|
570 r->headers_out.last_modified_time = of.mtime;
|
|
|
571
|
|
|
572 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
|
573 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
574 }
|
|
|
575
|
|
|
576 if (mp4 == NULL) {
|
|
|
577 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
578 if (b == NULL) {
|
|
|
579 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
580 }
|
|
|
581
|
|
|
582 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
583 if (b->file == NULL) {
|
|
|
584 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
585 }
|
|
|
586 }
|
|
|
587
|
|
|
588 rc = ngx_http_send_header(r);
|
|
|
589
|
|
|
590 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
591 return rc;
|
|
|
592 }
|
|
|
593
|
|
|
594 if (mp4) {
|
|
|
595 return ngx_http_output_filter(r, mp4->out);
|
|
|
596 }
|
|
|
597
|
|
|
598 b->file_pos = 0;
|
|
|
599 b->file_last = of.size;
|
|
|
600
|
|
|
601 b->in_file = b->file_last ? 1 : 0;
|
|
|
602 b->last_buf = 1;
|
|
|
603 b->last_in_chain = 1;
|
|
|
604
|
|
|
605 b->file->fd = of.fd;
|
|
|
606 b->file->name = path;
|
|
|
607 b->file->log = log;
|
|
|
608 b->file->directio = of.is_directio;
|
|
|
609
|
|
|
610 out.buf = b;
|
|
|
611 out.next = NULL;
|
|
|
612
|
|
|
613 return ngx_http_output_filter(r, &out);
|
|
|
614 }
|
|
|
615
|
|
|
616
|
|
|
617 static ngx_int_t
|
|
|
618 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
|
619 {
|
|
|
620 off_t start_offset, adjustment;
|
|
|
621 ngx_int_t rc;
|
|
|
622 ngx_uint_t i, j;
|
|
|
623 ngx_chain_t **prev;
|
|
|
624 ngx_http_mp4_trak_t *trak;
|
|
|
625 ngx_http_mp4_conf_t *conf;
|
|
|
626
|
|
|
627 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
628 "mp4 start:%ui", mp4->start);
|
|
|
629
|
|
|
630 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
631
|
|
|
632 mp4->buffer_size = conf->buffer_size;
|
|
|
633
|
|
|
634 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
|
635 if (rc != NGX_OK) {
|
|
|
636 return rc;
|
|
|
637 }
|
|
|
638
|
|
|
639 if (mp4->trak.nelts == 0) {
|
|
|
640 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
641 "no mp4 trak atoms were found in \"%s\"",
|
|
|
642 mp4->file.name.data);
|
|
|
643 return NGX_ERROR;
|
|
|
644 }
|
|
|
645
|
|
|
646 if (mp4->mdat_atom.buf == NULL) {
|
|
|
647 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
648 "no mp4 mdat atom was found in \"%s\"",
|
|
|
649 mp4->file.name.data);
|
|
|
650 return NGX_ERROR;
|
|
|
651 }
|
|
|
652
|
|
|
653 prev = &mp4->out;
|
|
|
654
|
|
|
655 if (mp4->ftyp_atom.buf) {
|
|
|
656 *prev = &mp4->ftyp_atom;
|
|
|
657 prev = &mp4->ftyp_atom.next;
|
|
|
658 }
|
|
|
659
|
|
|
660 *prev = &mp4->moov_atom;
|
|
|
661 prev = &mp4->moov_atom.next;
|
|
|
662
|
|
|
663 if (mp4->mvhd_atom.buf) {
|
|
|
664 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
|
665 *prev = &mp4->mvhd_atom;
|
|
|
666 prev = &mp4->mvhd_atom.next;
|
|
|
667 }
|
|
|
668
|
|
|
669 start_offset = mp4->end;
|
|
|
670 trak = mp4->trak.elts;
|
|
|
671
|
|
|
672 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
|
673
|
|
|
674 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
675 return NGX_ERROR;
|
|
|
676 }
|
|
|
677
|
|
|
678 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
679 return NGX_ERROR;
|
|
|
680 }
|
|
|
681
|
|
|
682 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
|
683
|
|
|
684 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
685 return NGX_ERROR;
|
|
|
686 }
|
|
|
687
|
|
|
688 ngx_http_mp4_update_stsz_atom(mp4, &trak[i]);
|
|
|
689
|
|
640
|
690 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
691 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
692 return NGX_ERROR;
|
|
|
693 }
|
|
|
694
|
|
|
695 } else {
|
|
|
696 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
697 return NGX_ERROR;
|
|
|
698 }
|
|
638
|
699 }
|
|
|
700
|
|
|
701 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
|
702 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
|
703 trak[i].size += trak[i].mdhd_size;
|
|
|
704 trak[i].size += trak[i].hdlr_size;
|
|
|
705 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
|
706 trak[i].size += trak[i].tkhd_size;
|
|
|
707 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
|
708
|
|
|
709 mp4->moov_size += trak[i].size;
|
|
|
710
|
|
|
711 if (start_offset > trak[i].start_offset) {
|
|
|
712 start_offset = trak[i].start_offset;
|
|
|
713 }
|
|
|
714
|
|
|
715 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
|
716 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
|
717
|
|
|
718 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
|
719 if (trak[i].out[j].buf) {
|
|
|
720 *prev = &trak[i].out[j];
|
|
|
721 prev = &trak[i].out[j].next;
|
|
|
722 }
|
|
|
723 }
|
|
|
724 }
|
|
|
725
|
|
|
726 mp4->moov_size += 8;
|
|
|
727
|
|
|
728 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
|
729 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
|
730 mp4->content_length += mp4->moov_size;
|
|
|
731
|
|
|
732 *prev = &mp4->mdat_atom;
|
|
|
733
|
|
|
734 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
|
735 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
|
736 - start_offset;
|
|
|
737
|
|
|
738 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
739 "mp4 adjustment:%D", adjustment);
|
|
|
740
|
|
|
741 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
640
|
742 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
743 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
|
744 } else {
|
|
|
745 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
|
746 }
|
|
638
|
747 }
|
|
|
748
|
|
|
749 return NGX_OK;
|
|
|
750 }
|
|
|
751
|
|
|
752
|
|
|
753 typedef struct {
|
|
|
754 u_char size[4];
|
|
|
755 u_char name[4];
|
|
|
756 } ngx_mp4_atom_header_t;
|
|
|
757
|
|
|
758 typedef struct {
|
|
|
759 u_char size[4];
|
|
|
760 u_char name[4];
|
|
|
761 u_char size64[8];
|
|
|
762 } ngx_mp4_atom_header64_t;
|
|
|
763
|
|
|
764
|
|
|
765 static ngx_int_t
|
|
|
766 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
|
767 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
|
768 {
|
|
|
769 off_t end;
|
|
|
770 size_t atom_header_size;
|
|
|
771 u_char *atom_header, *atom_name;
|
|
|
772 uint64_t atom_size;
|
|
|
773 ngx_int_t rc;
|
|
|
774 ngx_uint_t n;
|
|
|
775
|
|
|
776 end = mp4->offset + atom_data_size;
|
|
|
777
|
|
|
778 while (mp4->offset < end) {
|
|
|
779
|
|
|
780 if (mp4->buffer_pos + sizeof(uint32_t) > mp4->buffer_end) {
|
|
|
781 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
782 return NGX_ERROR;
|
|
|
783 }
|
|
|
784 }
|
|
|
785
|
|
|
786 atom_header = mp4->buffer_pos;
|
|
|
787 atom_size = ngx_mp4_get_32value(atom_header);
|
|
|
788 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
789
|
|
|
790 if (atom_size == 0) {
|
|
|
791 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
792 "mp4 atom end");
|
|
|
793 return NGX_OK;
|
|
|
794 }
|
|
|
795
|
|
|
796 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
|
797
|
|
|
798 if (atom_size == 1) {
|
|
|
799
|
|
|
800 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header64_t)
|
|
|
801 > mp4->buffer_end)
|
|
|
802 {
|
|
|
803 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
804 return NGX_ERROR;
|
|
|
805 }
|
|
|
806
|
|
|
807 atom_header = mp4->buffer_pos;
|
|
|
808 }
|
|
|
809
|
|
|
810 /* 64-bit atom size */
|
|
|
811 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
|
812 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
813
|
|
|
814 } else {
|
|
|
815 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
816 "\"%s\" mp4 atom is too small:%uL",
|
|
|
817 mp4->file.name.data, atom_size);
|
|
|
818 return NGX_ERROR;
|
|
|
819 }
|
|
|
820 }
|
|
|
821
|
|
|
822 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header_t) > mp4->buffer_end) {
|
|
|
823 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
824 return NGX_ERROR;
|
|
|
825 }
|
|
|
826
|
|
|
827 atom_header = mp4->buffer_pos;
|
|
|
828 }
|
|
|
829
|
|
|
830 atom_name = atom_header + sizeof(uint32_t);
|
|
|
831
|
|
|
832 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
833 "mp4 atom: %*s @%O:%uL",
|
|
|
834 4, atom_name, mp4->offset, atom_size);
|
|
|
835
|
|
|
836 for (n = 0; atom[n].name; n++) {
|
|
|
837
|
|
|
838 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
|
839
|
|
|
840 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
|
841
|
|
|
842 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
|
843 if (rc != NGX_OK) {
|
|
|
844 return rc;
|
|
|
845 }
|
|
|
846
|
|
|
847 goto next;
|
|
|
848 }
|
|
|
849 }
|
|
|
850
|
|
|
851 ngx_mp4_atom_next(mp4, atom_size);
|
|
|
852
|
|
|
853 next:
|
|
|
854 continue;
|
|
|
855 }
|
|
|
856
|
|
|
857 return NGX_OK;
|
|
|
858 }
|
|
|
859
|
|
|
860
|
|
|
861 static ngx_int_t
|
|
|
862 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4)
|
|
|
863 {
|
|
|
864 ngx_int_t n;
|
|
|
865
|
|
|
866 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
|
867 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
|
868 }
|
|
|
869
|
|
|
870 if (mp4->buffer == NULL) {
|
|
|
871 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
|
872 if (mp4->buffer == NULL) {
|
|
|
873 return NGX_ERROR;
|
|
|
874 }
|
|
|
875
|
|
|
876 mp4->buffer_start = mp4->buffer;
|
|
|
877 mp4->buffer_end = mp4->buffer + mp4->buffer_size;
|
|
|
878 }
|
|
|
879
|
|
|
880 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
|
881 mp4->offset);
|
|
|
882
|
|
|
883 if (n == NGX_ERROR) {
|
|
|
884 return NGX_ERROR;
|
|
|
885 }
|
|
|
886
|
|
|
887 if (n == 0) {
|
|
|
888 return NGX_OK;
|
|
|
889 }
|
|
|
890
|
|
|
891 mp4->buffer_pos = mp4->buffer_start;
|
|
|
892
|
|
|
893 return NGX_OK;
|
|
|
894 }
|
|
|
895
|
|
|
896
|
|
|
897 static ngx_int_t
|
|
|
898 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
899 {
|
|
|
900 u_char *ftyp_atom;
|
|
|
901 size_t atom_size;
|
|
|
902 ngx_buf_t *atom;
|
|
|
903
|
|
|
904 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
|
905
|
|
|
906 if (atom_data_size > 1024) {
|
|
|
907 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
908 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
|
909 mp4->file.name.data, atom_data_size);
|
|
|
910 return NGX_ERROR;
|
|
|
911 }
|
|
|
912
|
|
|
913 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
914
|
|
|
915 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
|
916 if (ftyp_atom == NULL) {
|
|
|
917 return NGX_ERROR;
|
|
|
918 }
|
|
|
919
|
|
|
920 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
|
921 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
|
922
|
|
|
923 /*
|
|
|
924 * only moov atom content is guaranteed to be in mp4->buffer
|
|
|
925 * during sending response, so ftyp atom content should be copied
|
|
|
926 */
|
|
|
927 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
|
928 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
|
929
|
|
|
930 atom = &mp4->ftyp_atom_buf;
|
|
|
931 atom->temporary = 1;
|
|
|
932 atom->pos = ftyp_atom;
|
|
|
933 atom->last = ftyp_atom + atom_size;
|
|
|
934
|
|
|
935 mp4->ftyp_atom.buf = atom;
|
|
|
936 mp4->ftyp_size = atom_size;
|
|
|
937 mp4->content_length = atom_size;
|
|
|
938
|
|
|
939 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
940
|
|
|
941 return NGX_OK;
|
|
|
942 }
|
|
|
943
|
|
|
944
|
|
|
945 /*
|
|
|
946 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
|
947 * will be set to this buffer part after moov atom processing.
|
|
|
948 */
|
|
|
949 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
|
950
|
|
|
951 static ngx_int_t
|
|
|
952 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
953 {
|
|
|
954 ngx_int_t rc;
|
|
|
955 ngx_uint_t no_mdat;
|
|
|
956 ngx_buf_t *atom;
|
|
|
957 ngx_http_mp4_conf_t *conf;
|
|
|
958
|
|
|
959 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
|
960
|
|
|
961 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
|
962
|
|
|
963 if (no_mdat && mp4->start == 0) {
|
|
|
964 /*
|
|
|
965 * send original file if moov atom resides before
|
|
|
966 * mdat atom and client requests integral file
|
|
|
967 */
|
|
|
968 return NGX_DECLINED;
|
|
|
969 }
|
|
|
970
|
|
|
971 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
972
|
|
|
973 if (atom_data_size > mp4->buffer_size) {
|
|
|
974
|
|
|
975 if (atom_data_size > conf->max_buffer_size) {
|
|
|
976 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
977 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
|
978 "you may want to increase mp4_max_buffer_size",
|
|
|
979 mp4->file.name.data, atom_data_size);
|
|
|
980 return NGX_ERROR;
|
|
|
981 }
|
|
|
982
|
|
|
983 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
|
984 mp4->buffer = NULL;
|
|
|
985 mp4->buffer_pos = NULL;
|
|
|
986 mp4->buffer_end = NULL;
|
|
|
987
|
|
|
988 mp4->buffer_size = (size_t) atom_data_size
|
|
|
989 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
|
990 }
|
|
|
991
|
|
|
992 mp4->trak.elts = &mp4->traks;
|
|
|
993 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
|
994 mp4->trak.nalloc = 2;
|
|
|
995 mp4->trak.pool = mp4->request->pool;
|
|
|
996
|
|
|
997 atom = &mp4->moov_atom_buf;
|
|
|
998 atom->temporary = 1;
|
|
|
999 atom->pos = mp4->moov_atom_header;
|
|
|
1000 atom->last = mp4->moov_atom_header + 8;
|
|
|
1001
|
|
|
1002 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
|
1003
|
|
|
1004 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
|
1005
|
|
|
1006 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
|
1007
|
|
|
1008 if (no_mdat) {
|
|
|
1009 mp4->buffer_start = mp4->buffer_pos;
|
|
|
1010 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
|
1011
|
|
|
1012 } else {
|
|
|
1013 /* skip atoms after moov atom */
|
|
|
1014 mp4->offset = mp4->end;
|
|
|
1015 }
|
|
|
1016
|
|
|
1017 return rc;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020
|
|
|
1021 static ngx_int_t
|
|
|
1022 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1023 {
|
|
|
1024 ngx_buf_t *data;
|
|
|
1025
|
|
|
1026 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
|
1027
|
|
|
1028 data = &mp4->mdat_data_buf;
|
|
|
1029 data->file = &mp4->file;
|
|
|
1030 data->in_file = 1;
|
|
|
1031 data->last_buf = 1;
|
|
|
1032 data->last_in_chain = 1;
|
|
|
1033 data->file_last = mp4->offset + atom_data_size;
|
|
|
1034
|
|
|
1035 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
|
1036 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
|
1037 mp4->mdat_data.buf = data;
|
|
|
1038
|
|
|
1039 if (mp4->trak.nelts) {
|
|
|
1040 /* skip atoms after mdat atom */
|
|
|
1041 mp4->offset = mp4->end;
|
|
|
1042
|
|
|
1043 } else {
|
|
|
1044 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1045 }
|
|
|
1046
|
|
|
1047 return NGX_OK;
|
|
|
1048 }
|
|
|
1049
|
|
|
1050
|
|
|
1051 static size_t
|
|
|
1052 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
|
1053 {
|
|
|
1054 off_t atom_data_size;
|
|
|
1055 u_char *atom_header;
|
|
|
1056 uint32_t atom_header_size;
|
|
|
1057 uint64_t atom_size;
|
|
|
1058 ngx_buf_t *atom;
|
|
|
1059
|
|
|
1060 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
|
1061 mp4->mdat_data.buf->file_pos = start_offset;
|
|
|
1062 mp4->content_length += atom_data_size;
|
|
|
1063
|
|
|
1064 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1065 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
|
1066
|
|
|
1067 atom_header = mp4->mdat_atom_header;
|
|
|
1068
|
|
|
1069 if (atom_data_size > 0xffffffff) {
|
|
|
1070 atom_size = 1;
|
|
|
1071 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
1072 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
|
1073 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
|
1074 } else {
|
|
|
1075 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
|
1076 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
1077 }
|
|
|
1078
|
|
|
1079 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1080 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
|
1081
|
|
|
1082 atom = &mp4->mdat_atom_buf;
|
|
|
1083 atom->temporary = 1;
|
|
|
1084 atom->pos = atom_header;
|
|
|
1085 atom->last = atom_header + atom_header_size;
|
|
|
1086
|
|
|
1087 return atom_header_size;
|
|
|
1088 }
|
|
|
1089
|
|
|
1090
|
|
|
1091 typedef struct {
|
|
|
1092 u_char size[4];
|
|
|
1093 u_char name[4];
|
|
|
1094 u_char version[1];
|
|
|
1095 u_char flags[3];
|
|
|
1096 u_char creation_time[4];
|
|
|
1097 u_char modification_time[4];
|
|
|
1098 u_char timescale[4];
|
|
|
1099 u_char duration[4];
|
|
|
1100 u_char rate[4];
|
|
|
1101 u_char volume[2];
|
|
|
1102 u_char reserved[10];
|
|
|
1103 u_char matrix[36];
|
|
|
1104 u_char preview_time[4];
|
|
|
1105 u_char preview_duration[4];
|
|
|
1106 u_char poster_time[4];
|
|
|
1107 u_char selection_time[4];
|
|
|
1108 u_char selection_duration[4];
|
|
|
1109 u_char current_time[4];
|
|
|
1110 u_char next_track_id[4];
|
|
|
1111 } ngx_mp4_mvhd_atom_t;
|
|
|
1112
|
|
|
1113 typedef struct {
|
|
|
1114 u_char size[4];
|
|
|
1115 u_char name[4];
|
|
|
1116 u_char version[1];
|
|
|
1117 u_char flags[3];
|
|
|
1118 u_char creation_time[8];
|
|
|
1119 u_char modification_time[8];
|
|
|
1120 u_char timescale[4];
|
|
|
1121 u_char duration[8];
|
|
|
1122 u_char rate[4];
|
|
|
1123 u_char volume[2];
|
|
|
1124 u_char reserved[10];
|
|
|
1125 u_char matrix[36];
|
|
|
1126 u_char preview_time[4];
|
|
|
1127 u_char preview_duration[4];
|
|
|
1128 u_char poster_time[4];
|
|
|
1129 u_char selection_time[4];
|
|
|
1130 u_char selection_duration[4];
|
|
|
1131 u_char current_time[4];
|
|
|
1132 u_char next_track_id[4];
|
|
|
1133 } ngx_mp4_mvhd64_atom_t;
|
|
|
1134
|
|
|
1135
|
|
|
1136 static ngx_int_t
|
|
|
1137 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1138 {
|
|
|
1139 u_char *atom_header;
|
|
|
1140 size_t atom_size;
|
|
|
1141 uint32_t timescale;
|
|
|
1142 uint64_t duration;
|
|
|
1143 ngx_buf_t *atom;
|
|
|
1144 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
|
1145 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
|
1146
|
|
|
1147 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
|
1148
|
|
|
1149 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1150 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
|
1151 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
|
1152 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
|
1153
|
|
|
1154 if (mvhd_atom->version[0] == 0) {
|
|
|
1155 /* version 0: 32-bit duration */
|
|
|
1156 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
|
1157 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
|
1158
|
|
|
1159 } else {
|
|
|
1160 /* version 1: 64-bit duration */
|
|
|
1161 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
|
1162 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
|
1163 }
|
|
|
1164
|
|
|
1165 mp4->timescale = timescale;
|
|
|
1166
|
|
|
1167 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1168 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1169 timescale, duration, (double) duration / timescale);
|
|
|
1170
|
|
|
1171 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1172
|
|
|
1173 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1174 "mvhd new duration:%uL, time:%.3fs",
|
|
|
1175 duration, (double) duration / timescale);
|
|
|
1176
|
|
|
1177 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1178 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
|
1179
|
|
|
1180 if (mvhd_atom->version[0] == 0) {
|
|
|
1181 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
|
1182
|
|
|
1183 } else {
|
|
|
1184 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
|
1185 }
|
|
|
1186
|
|
|
1187 atom = &mp4->mvhd_atom_buf;
|
|
|
1188 atom->temporary = 1;
|
|
|
1189 atom->pos = atom_header;
|
|
|
1190 atom->last = atom_header + atom_size;
|
|
|
1191
|
|
|
1192 mp4->mvhd_atom.buf = atom;
|
|
|
1193
|
|
|
1194 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1195
|
|
|
1196 return NGX_OK;
|
|
|
1197 }
|
|
|
1198
|
|
|
1199
|
|
|
1200 static ngx_int_t
|
|
|
1201 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1202 {
|
|
|
1203 u_char *atom_header, *atom_end;
|
|
|
1204 off_t atom_file_end;
|
|
|
1205 ngx_int_t rc;
|
|
|
1206 ngx_buf_t *atom;
|
|
|
1207 ngx_http_mp4_trak_t *trak;
|
|
|
1208
|
|
|
1209 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
|
1210
|
|
|
1211 trak = ngx_array_push(&mp4->trak);
|
|
|
1212 if (trak == NULL) {
|
|
|
1213 return NGX_ERROR;
|
|
|
1214 }
|
|
|
1215
|
|
|
1216 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1217
|
|
|
1218 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1219 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
|
1220
|
|
|
1221 atom = &trak->trak_atom_buf;
|
|
|
1222 atom->temporary = 1;
|
|
|
1223 atom->pos = atom_header;
|
|
|
1224 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1225
|
|
|
1226 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
|
1227
|
|
|
1228 atom_end = mp4->buffer_pos + atom_data_size;
|
|
|
1229 atom_file_end = mp4->offset + atom_data_size;
|
|
|
1230
|
|
|
1231 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
|
1232
|
|
|
1233 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1234 "mp4 trak atom: %i", rc);
|
|
|
1235
|
|
|
1236 if (rc == NGX_DECLINED) {
|
|
|
1237 /* skip this trak */
|
|
|
1238 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1239 mp4->trak.nelts--;
|
|
|
1240 mp4->buffer_pos = atom_end;
|
|
|
1241 mp4->offset = atom_file_end;
|
|
|
1242 return NGX_OK;
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 return rc;
|
|
|
1246 }
|
|
|
1247
|
|
|
1248
|
|
|
1249 static void
|
|
|
1250 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1251 ngx_http_mp4_trak_t *trak)
|
|
|
1252 {
|
|
|
1253 ngx_buf_t *atom;
|
|
|
1254
|
|
|
1255 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1256 atom = &trak->trak_atom_buf;
|
|
|
1257 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1258 }
|
|
|
1259
|
|
|
1260
|
|
|
1261 static ngx_int_t
|
|
|
1262 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1263 {
|
|
|
1264 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1265 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
|
1266 mp4->file.name.data);
|
|
|
1267
|
|
|
1268 return NGX_ERROR;
|
|
|
1269 }
|
|
|
1270
|
|
|
1271
|
|
|
1272 typedef struct {
|
|
|
1273 u_char size[4];
|
|
|
1274 u_char name[4];
|
|
|
1275 u_char version[1];
|
|
|
1276 u_char flags[3];
|
|
|
1277 u_char creation_time[4];
|
|
|
1278 u_char modification_time[4];
|
|
|
1279 u_char track_id[4];
|
|
|
1280 u_char reserved1[4];
|
|
|
1281 u_char duration[4];
|
|
|
1282 u_char reserved2[8];
|
|
|
1283 u_char layer[2];
|
|
|
1284 u_char group[2];
|
|
|
1285 u_char volume[2];
|
|
|
1286 u_char reverved3[2];
|
|
|
1287 u_char matrix[36];
|
|
|
1288 u_char width[4];
|
|
|
1289 u_char heigth[4];
|
|
|
1290 } ngx_mp4_tkhd_atom_t;
|
|
|
1291
|
|
|
1292 typedef struct {
|
|
|
1293 u_char size[4];
|
|
|
1294 u_char name[4];
|
|
|
1295 u_char version[1];
|
|
|
1296 u_char flags[3];
|
|
|
1297 u_char creation_time[8];
|
|
|
1298 u_char modification_time[8];
|
|
|
1299 u_char track_id[4];
|
|
|
1300 u_char reserved1[4];
|
|
|
1301 u_char duration[8];
|
|
|
1302 u_char reserved2[8];
|
|
|
1303 u_char layer[2];
|
|
|
1304 u_char group[2];
|
|
|
1305 u_char volume[2];
|
|
|
1306 u_char reverved3[2];
|
|
|
1307 u_char matrix[36];
|
|
|
1308 u_char width[4];
|
|
|
1309 u_char heigth[4];
|
|
|
1310 } ngx_mp4_tkhd64_atom_t;
|
|
|
1311
|
|
|
1312
|
|
|
1313 static ngx_int_t
|
|
|
1314 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1315 {
|
|
|
1316 u_char *atom_header;
|
|
|
1317 size_t atom_size;
|
|
|
1318 uint64_t duration;
|
|
|
1319 ngx_buf_t *atom;
|
|
|
1320 ngx_http_mp4_trak_t *trak;
|
|
|
1321 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
|
1322 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
|
1323
|
|
|
1324 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
|
1325
|
|
|
1326 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1327 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
|
1328 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
|
1329 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
|
1330
|
|
|
1331 if (tkhd_atom->version[0] == 0) {
|
|
|
1332 /* version 0: 32-bit duration */
|
|
|
1333 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
|
1334
|
|
|
1335 } else {
|
|
|
1336 /* version 1: 64-bit duration */
|
|
|
1337 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
|
1338 }
|
|
|
1339
|
|
|
1340 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1341 "tkhd duration:%uL, time:%.3fs",
|
|
|
1342 duration, (double) duration / mp4->timescale);
|
|
|
1343
|
|
|
1344 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
|
1345
|
|
|
1346 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1347 "tkhd new duration:%uL, time:%.3fs",
|
|
|
1348 duration, (double) duration / mp4->timescale);
|
|
|
1349
|
|
|
1350 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1351
|
|
|
1352 trak = ngx_mp4_last_trak(mp4);
|
|
|
1353 trak->tkhd_size = atom_size;
|
|
|
1354
|
|
|
1355 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
|
1356
|
|
|
1357 if (tkhd_atom->version[0] == 0) {
|
|
|
1358 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
|
1359
|
|
|
1360 } else {
|
|
|
1361 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
|
1362 }
|
|
|
1363
|
|
|
1364 atom = &trak->tkhd_atom_buf;
|
|
|
1365 atom->temporary = 1;
|
|
|
1366 atom->pos = atom_header;
|
|
|
1367 atom->last = atom_header + atom_size;
|
|
|
1368
|
|
|
1369 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
|
1370
|
|
|
1371 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1372
|
|
|
1373 return NGX_OK;
|
|
|
1374 }
|
|
|
1375
|
|
|
1376
|
|
|
1377 static ngx_int_t
|
|
|
1378 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1379 {
|
|
|
1380 u_char *atom_header;
|
|
|
1381 ngx_buf_t *atom;
|
|
|
1382 ngx_http_mp4_trak_t *trak;
|
|
|
1383
|
|
|
1384 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
|
1385
|
|
|
1386 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1387 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
|
1388
|
|
|
1389 trak = ngx_mp4_last_trak(mp4);
|
|
|
1390
|
|
|
1391 atom = &trak->mdia_atom_buf;
|
|
|
1392 atom->temporary = 1;
|
|
|
1393 atom->pos = atom_header;
|
|
|
1394 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1395
|
|
|
1396 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
|
1397
|
|
|
1398 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
|
1399 }
|
|
|
1400
|
|
|
1401
|
|
|
1402 static void
|
|
|
1403 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1404 ngx_http_mp4_trak_t *trak)
|
|
|
1405 {
|
|
|
1406 ngx_buf_t *atom;
|
|
|
1407
|
|
|
1408 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1409 atom = &trak->mdia_atom_buf;
|
|
|
1410 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1411 }
|
|
|
1412
|
|
|
1413
|
|
|
1414 typedef struct {
|
|
|
1415 u_char size[4];
|
|
|
1416 u_char name[4];
|
|
|
1417 u_char version[1];
|
|
|
1418 u_char flags[3];
|
|
|
1419 u_char creation_time[4];
|
|
|
1420 u_char modification_time[4];
|
|
|
1421 u_char timescale[4];
|
|
|
1422 u_char duration[4];
|
|
|
1423 u_char language[2];
|
|
|
1424 u_char quality[2];
|
|
|
1425 } ngx_mp4_mdhd_atom_t;
|
|
|
1426
|
|
|
1427 typedef struct {
|
|
|
1428 u_char size[4];
|
|
|
1429 u_char name[4];
|
|
|
1430 u_char version[1];
|
|
|
1431 u_char flags[3];
|
|
|
1432 u_char creation_time[8];
|
|
|
1433 u_char modification_time[8];
|
|
|
1434 u_char timescale[4];
|
|
|
1435 u_char duration[8];
|
|
|
1436 u_char language[2];
|
|
|
1437 u_char quality[2];
|
|
|
1438 } ngx_mp4_mdhd64_atom_t;
|
|
|
1439
|
|
|
1440
|
|
|
1441 static ngx_int_t
|
|
|
1442 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1443 {
|
|
|
1444 u_char *atom_header;
|
|
|
1445 size_t atom_size;
|
|
|
1446 uint32_t timescale;
|
|
|
1447 uint64_t duration;
|
|
|
1448 ngx_buf_t *atom;
|
|
|
1449 ngx_http_mp4_trak_t *trak;
|
|
|
1450 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
|
1451 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
|
1452
|
|
|
1453 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
|
1454
|
|
|
1455 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1456 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
|
1457 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
|
1458 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
|
1459
|
|
|
1460 if (mdhd_atom->version[0] == 0) {
|
|
|
1461 /* version 0: everything is 32-bit */
|
|
|
1462 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
|
1463 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
|
1464
|
|
|
1465 } else {
|
|
|
1466 /* version 1: 64-bit duration and 32-bit timescale */
|
|
|
1467 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
|
1468 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
|
1469 }
|
|
|
1470
|
|
|
1471 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1472 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1473 timescale, duration, (double) duration / timescale);
|
|
|
1474
|
|
|
1475 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1476
|
|
|
1477 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1478 "mdhd new duration:%uL, time:%.3fs",
|
|
|
1479 duration, (double) duration / timescale);
|
|
|
1480
|
|
|
1481 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1482
|
|
|
1483 trak = ngx_mp4_last_trak(mp4);
|
|
|
1484 trak->mdhd_size = atom_size;
|
|
|
1485 trak->timescale = timescale;
|
|
|
1486
|
|
|
1487 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
|
1488
|
|
|
1489 if (mdhd_atom->version[0] == 0) {
|
|
|
1490 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
|
1491
|
|
|
1492 } else {
|
|
|
1493 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
|
1494 }
|
|
|
1495
|
|
|
1496 atom = &trak->mdhd_atom_buf;
|
|
|
1497 atom->temporary = 1;
|
|
|
1498 atom->pos = atom_header;
|
|
|
1499 atom->last = atom_header + atom_size;
|
|
|
1500
|
|
|
1501 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
|
1502
|
|
|
1503 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1504
|
|
|
1505 return NGX_OK;
|
|
|
1506 }
|
|
|
1507
|
|
|
1508
|
|
|
1509 static ngx_int_t
|
|
|
1510 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1511 {
|
|
|
1512 u_char *atom_header;
|
|
|
1513 size_t atom_size;
|
|
|
1514 ngx_buf_t *atom;
|
|
|
1515 ngx_http_mp4_trak_t *trak;
|
|
|
1516
|
|
|
1517 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
|
1518
|
|
|
1519 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1520 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1521 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1522 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
|
1523
|
|
|
1524 trak = ngx_mp4_last_trak(mp4);
|
|
|
1525
|
|
|
1526 atom = &trak->hdlr_atom_buf;
|
|
|
1527 atom->temporary = 1;
|
|
|
1528 atom->pos = atom_header;
|
|
|
1529 atom->last = atom_header + atom_size;
|
|
|
1530
|
|
|
1531 trak->hdlr_size = atom_size;
|
|
|
1532 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
|
1533
|
|
|
1534 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1535
|
|
|
1536 return NGX_OK;
|
|
|
1537 }
|
|
|
1538
|
|
|
1539
|
|
|
1540 static ngx_int_t
|
|
|
1541 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1542 {
|
|
|
1543 u_char *atom_header;
|
|
|
1544 ngx_buf_t *atom;
|
|
|
1545 ngx_http_mp4_trak_t *trak;
|
|
|
1546
|
|
|
1547 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
|
1548
|
|
|
1549 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1550 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
|
1551
|
|
|
1552 trak = ngx_mp4_last_trak(mp4);
|
|
|
1553
|
|
|
1554 atom = &trak->minf_atom_buf;
|
|
|
1555 atom->temporary = 1;
|
|
|
1556 atom->pos = atom_header;
|
|
|
1557 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1558
|
|
|
1559 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
|
1560
|
|
|
1561 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
|
1562 }
|
|
|
1563
|
|
|
1564
|
|
|
1565 static void
|
|
|
1566 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1567 ngx_http_mp4_trak_t *trak)
|
|
|
1568 {
|
|
|
1569 ngx_buf_t *atom;
|
|
|
1570
|
|
|
1571 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
|
1572 + trak->vmhd_size
|
|
|
1573 + trak->smhd_size
|
|
|
1574 + trak->dinf_size;
|
|
|
1575 atom = &trak->minf_atom_buf;
|
|
|
1576 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1577 }
|
|
|
1578
|
|
|
1579
|
|
|
1580 static ngx_int_t
|
|
|
1581 ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1582 {
|
|
|
1583 u_char *atom_header;
|
|
|
1584 size_t atom_size;
|
|
|
1585 ngx_buf_t *atom;
|
|
|
1586 ngx_http_mp4_trak_t *trak;
|
|
|
1587
|
|
|
1588 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom");
|
|
|
1589
|
|
|
1590 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1591 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1592 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1593 ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd');
|
|
|
1594
|
|
|
1595 trak = ngx_mp4_last_trak(mp4);
|
|
|
1596
|
|
|
1597 atom = &trak->vmhd_atom_buf;
|
|
|
1598 atom->temporary = 1;
|
|
|
1599 atom->pos = atom_header;
|
|
|
1600 atom->last = atom_header + atom_size;
|
|
|
1601
|
|
|
1602 trak->vmhd_size += atom_size;
|
|
|
1603 trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom;
|
|
|
1604
|
|
|
1605 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1606
|
|
|
1607 return NGX_OK;
|
|
|
1608 }
|
|
|
1609
|
|
|
1610
|
|
|
1611 static ngx_int_t
|
|
|
1612 ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1613 {
|
|
|
1614 u_char *atom_header;
|
|
|
1615 size_t atom_size;
|
|
|
1616 ngx_buf_t *atom;
|
|
|
1617 ngx_http_mp4_trak_t *trak;
|
|
|
1618
|
|
|
1619 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
|
1620
|
|
|
1621 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1622 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1623 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1624 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
|
1625
|
|
|
1626 trak = ngx_mp4_last_trak(mp4);
|
|
|
1627
|
|
|
1628 atom = &trak->smhd_atom_buf;
|
|
|
1629 atom->temporary = 1;
|
|
|
1630 atom->pos = atom_header;
|
|
|
1631 atom->last = atom_header + atom_size;
|
|
|
1632
|
|
|
1633 trak->vmhd_size += atom_size;
|
|
|
1634 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
|
1635
|
|
|
1636 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1637
|
|
|
1638 return NGX_OK;
|
|
|
1639 }
|
|
|
1640
|
|
|
1641
|
|
|
1642 static ngx_int_t
|
|
|
1643 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1644 {
|
|
|
1645 u_char *atom_header;
|
|
|
1646 size_t atom_size;
|
|
|
1647 ngx_buf_t *atom;
|
|
|
1648 ngx_http_mp4_trak_t *trak;
|
|
|
1649
|
|
|
1650 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
|
1651
|
|
|
1652 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1653 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1654 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1655 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
|
1656
|
|
|
1657 trak = ngx_mp4_last_trak(mp4);
|
|
|
1658
|
|
|
1659 atom = &trak->dinf_atom_buf;
|
|
|
1660 atom->temporary = 1;
|
|
|
1661 atom->pos = atom_header;
|
|
|
1662 atom->last = atom_header + atom_size;
|
|
|
1663
|
|
|
1664 trak->dinf_size += atom_size;
|
|
|
1665 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
|
1666
|
|
|
1667 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1668
|
|
|
1669 return NGX_OK;
|
|
|
1670 }
|
|
|
1671
|
|
|
1672
|
|
|
1673 static ngx_int_t
|
|
|
1674 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1675 {
|
|
|
1676 u_char *atom_header;
|
|
|
1677 ngx_buf_t *atom;
|
|
|
1678 ngx_http_mp4_trak_t *trak;
|
|
|
1679
|
|
|
1680 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
|
1681
|
|
|
1682 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1683 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
|
1684
|
|
|
1685 trak = ngx_mp4_last_trak(mp4);
|
|
|
1686
|
|
|
1687 atom = &trak->stbl_atom_buf;
|
|
|
1688 atom->temporary = 1;
|
|
|
1689 atom->pos = atom_header;
|
|
|
1690 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1691
|
|
|
1692 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
|
1693
|
|
|
1694 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
|
1695 }
|
|
|
1696
|
|
|
1697
|
|
|
1698 static void
|
|
|
1699 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1700 ngx_http_mp4_trak_t *trak)
|
|
|
1701 {
|
|
|
1702 ngx_buf_t *atom;
|
|
|
1703
|
|
|
1704 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1705 atom = &trak->stbl_atom_buf;
|
|
|
1706 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1707 }
|
|
|
1708
|
|
|
1709
|
|
|
1710 typedef struct {
|
|
|
1711 u_char size[4];
|
|
|
1712 u_char name[4];
|
|
|
1713 u_char version[1];
|
|
|
1714 u_char flags[3];
|
|
|
1715 u_char entries[4];
|
|
|
1716
|
|
|
1717 u_char media_size[4];
|
|
|
1718 u_char media_name[4];
|
|
|
1719 } ngx_mp4_stsd_atom_t;
|
|
|
1720
|
|
|
1721
|
|
|
1722 static ngx_int_t
|
|
|
1723 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1724 {
|
|
|
1725 u_char *atom_header, *atom_table;
|
|
|
1726 size_t atom_size;
|
|
|
1727 ngx_buf_t *atom;
|
|
|
1728 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
|
1729 ngx_http_mp4_trak_t *trak;
|
|
|
1730
|
|
|
1731 /* sample description atom */
|
|
|
1732
|
|
|
1733 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
|
1734
|
|
|
1735 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1736 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
|
1737 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1738 atom_table = atom_header + atom_size;
|
|
|
1739 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
|
1740 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
|
1741
|
|
|
1742 if ((uint64_t) (sizeof(ngx_mp4_stsd_atom_t) - sizeof(ngx_mp4_atom_header_t))
|
|
640
|
1743 > atom_data_size)
|
|
|
1744 {
|
|
638
|
1745 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1746 "\"%s\" mp4 stsd atom too large",
|
|
|
1747 mp4->file.name.data);
|
|
|
1748 return NGX_ERROR;
|
|
|
1749 }
|
|
|
1750
|
|
|
1751 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1752 "stsd entries:%uD, media:%*s",
|
|
|
1753 ngx_mp4_get_32value(stsd_atom->entries),
|
|
|
1754 4, stsd_atom->media_name);
|
|
|
1755
|
|
|
1756 /* supported media format: "avc1" (H.264) and "mp4a" (MPEG-4/AAC) */
|
|
|
1757
|
|
|
1758 if (ngx_strncmp(stsd_atom->media_name, "avc1", 4) != 0
|
|
|
1759 && ngx_strncmp(stsd_atom->media_name, "mp4a", 4) != 0)
|
|
|
1760 {
|
|
|
1761 return NGX_DECLINED;
|
|
|
1762 }
|
|
|
1763
|
|
|
1764 trak = ngx_mp4_last_trak(mp4);
|
|
|
1765
|
|
|
1766 atom = &trak->stsd_atom_buf;
|
|
|
1767 atom->temporary = 1;
|
|
|
1768 atom->pos = atom_header;
|
|
|
1769 atom->last = atom_table;
|
|
|
1770
|
|
|
1771 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
|
1772 trak->size += atom_size;
|
|
|
1773
|
|
|
1774 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1775
|
|
|
1776 return NGX_OK;
|
|
|
1777 }
|
|
|
1778
|
|
|
1779
|
|
|
1780 typedef struct {
|
|
|
1781 u_char size[4];
|
|
|
1782 u_char name[4];
|
|
|
1783 u_char version[1];
|
|
|
1784 u_char flags[3];
|
|
|
1785 u_char entries[4];
|
|
|
1786 } ngx_mp4_stts_atom_t;
|
|
|
1787
|
|
|
1788 typedef struct {
|
|
|
1789 u_char count[4];
|
|
|
1790 u_char duration[4];
|
|
|
1791 } ngx_mp4_stts_entry_t;
|
|
|
1792
|
|
|
1793
|
|
|
1794 static ngx_int_t
|
|
|
1795 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1796 {
|
|
|
1797 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1798 uint32_t entries;
|
|
|
1799 ngx_buf_t *atom, *data;
|
|
|
1800 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1801 ngx_http_mp4_trak_t *trak;
|
|
|
1802
|
|
|
1803 /* time-to-sample atom */
|
|
|
1804
|
|
|
1805 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
|
1806
|
|
|
1807 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1808 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
|
1809 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
|
1810
|
|
|
1811 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
|
1812
|
|
|
1813 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1814 "mp4 time-to-sample entries:%uD", entries);
|
|
|
1815
|
|
|
1816 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
|
1817 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
|
1818
|
|
|
1819 if ((uint64_t) (atom_end - stts_atom->version) > atom_data_size) {
|
|
|
1820 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1821 "\"%s\" mp4 stts atom too large",
|
|
|
1822 mp4->file.name.data);
|
|
|
1823 return NGX_ERROR;
|
|
|
1824 }
|
|
|
1825
|
|
|
1826 trak = ngx_mp4_last_trak(mp4);
|
|
|
1827 trak->time_to_sample_entries = entries;
|
|
|
1828
|
|
|
1829 atom = &trak->stts_atom_buf;
|
|
|
1830 atom->temporary = 1;
|
|
|
1831 atom->pos = atom_header;
|
|
|
1832 atom->last = atom_table;
|
|
|
1833
|
|
|
1834 data = &trak->stts_data_buf;
|
|
|
1835 data->temporary = 1;
|
|
|
1836 data->pos = atom_table;
|
|
|
1837 data->last = atom_end;
|
|
|
1838
|
|
|
1839 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
|
1840 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
|
1841
|
|
|
1842 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1843
|
|
|
1844 return NGX_OK;
|
|
|
1845 }
|
|
|
1846
|
|
|
1847
|
|
|
1848 static ngx_int_t
|
|
|
1849 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1850 ngx_http_mp4_trak_t *trak)
|
|
|
1851 {
|
|
|
1852 size_t atom_size;
|
|
|
1853 uint32_t entries, count, duration;
|
|
|
1854 uint64_t start_time;
|
|
|
1855 ngx_buf_t *atom, *data;
|
|
|
1856 ngx_uint_t start_sample;
|
|
|
1857 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1858 ngx_mp4_stts_entry_t *entry, *end;
|
|
|
1859
|
|
|
1860 /*
|
|
|
1861 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
|
1862 * from mdia.mdhd atom which may reside after mdia.minf
|
|
|
1863 */
|
|
|
1864
|
|
|
1865 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1866 "mp4 stts atom update");
|
|
|
1867
|
|
|
1868 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
|
1869
|
|
|
1870 if (data == NULL) {
|
|
|
1871 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1872 "no mp4 stts atoms were found in \"%s\"",
|
|
|
1873 mp4->file.name.data);
|
|
|
1874 return NGX_ERROR;
|
|
|
1875 }
|
|
|
1876
|
|
|
1877 entries = trak->time_to_sample_entries;
|
|
|
1878 start_time = mp4->start * trak->timescale / 1000;
|
|
|
1879
|
|
|
1880 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1881 "time-to-sample start_time:%uL", start_time);
|
|
|
1882
|
|
|
1883 start_sample = 0;
|
|
|
1884 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
|
1885 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
|
1886
|
|
|
1887 while (entry < end) {
|
|
|
1888 count = ngx_mp4_get_32value(entry->count);
|
|
|
1889 duration = ngx_mp4_get_32value(entry->duration);
|
|
|
1890
|
|
|
1891 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1892 "count:%uD, duration:%uD", count, duration);
|
|
|
1893
|
|
|
1894 if (start_time < count * duration) {
|
|
|
1895 start_sample += (ngx_uint_t) (start_time / duration);
|
|
|
1896 count -= start_sample;
|
|
|
1897 ngx_mp4_set_32value(entry->count, count);
|
|
|
1898 goto found;
|
|
|
1899 }
|
|
|
1900
|
|
|
1901 start_sample += count;
|
|
|
1902 start_time -= count * duration;
|
|
|
1903 entries--;
|
|
|
1904 entry++;
|
|
|
1905 }
|
|
|
1906
|
|
|
1907 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1908 "start time is out mp4 stts samples in \"%s\"",
|
|
|
1909 mp4->file.name.data);
|
|
|
1910
|
|
|
1911 return NGX_ERROR;
|
|
|
1912
|
|
|
1913 found:
|
|
|
1914
|
|
|
1915 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1916 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
|
1917
|
|
|
1918 trak->start_sample = start_sample;
|
|
|
1919
|
|
|
1920 data->pos = (u_char *) entry;
|
|
|
1921 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
|
1922 trak->size += atom_size;
|
|
|
1923
|
|
|
1924 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
|
1925 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
|
1926 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
|
1927 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
|
1928
|
|
|
1929 return NGX_OK;
|
|
|
1930 }
|
|
|
1931
|
|
|
1932
|
|
|
1933 typedef struct {
|
|
|
1934 u_char size[4];
|
|
|
1935 u_char name[4];
|
|
|
1936 u_char version[1];
|
|
|
1937 u_char flags[3];
|
|
|
1938 u_char entries[4];
|
|
|
1939 } ngx_http_mp4_stss_atom_t;
|
|
|
1940
|
|
|
1941
|
|
|
1942 static ngx_int_t
|
|
|
1943 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1944 {
|
|
|
1945 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1946 uint32_t entries;
|
|
|
1947 ngx_buf_t *atom, *data;
|
|
|
1948 ngx_http_mp4_trak_t *trak;
|
|
|
1949 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
1950
|
|
|
1951 /* sync samples atom */
|
|
|
1952
|
|
|
1953 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
|
1954
|
|
|
1955 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1956 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
|
1957 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
|
1958
|
|
|
1959 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
|
1960
|
|
|
1961 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1962 "sync sample entries:%uD", entries);
|
|
|
1963
|
|
|
1964 trak = ngx_mp4_last_trak(mp4);
|
|
|
1965 trak->sync_samples_entries = entries;
|
|
|
1966
|
|
|
1967 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
|
1968
|
|
|
1969 atom = &trak->stss_atom_buf;
|
|
|
1970 atom->temporary = 1;
|
|
|
1971 atom->pos = atom_header;
|
|
|
1972 atom->last = atom_table;
|
|
|
1973
|
|
|
1974 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
1975
|
|
|
1976 if ((uint64_t) (atom_end - stss_atom->version) > atom_data_size) {
|
|
|
1977 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1978 "\"%s\" mp4 stss atom too large", mp4->file.name.data);
|
|
|
1979 return NGX_ERROR;
|
|
|
1980 }
|
|
|
1981
|
|
|
1982 data = &trak->stss_data_buf;
|
|
|
1983 data->temporary = 1;
|
|
|
1984 data->pos = atom_table;
|
|
|
1985 data->last = atom_end;
|
|
|
1986
|
|
|
1987 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
|
1988 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
|
1989
|
|
|
1990 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1991
|
|
|
1992 return NGX_OK;
|
|
|
1993 }
|
|
|
1994
|
|
|
1995
|
|
|
1996 static ngx_int_t
|
|
|
1997 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1998 ngx_http_mp4_trak_t *trak)
|
|
|
1999 {
|
|
|
2000 size_t atom_size;
|
|
|
2001 uint32_t entries, sample, start_sample, *entry, *end;
|
|
|
2002 ngx_buf_t *atom, *data;
|
|
|
2003 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2004
|
|
|
2005 /*
|
|
|
2006 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
|
2007 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2008 * atom which may reside after mdia.minf
|
|
|
2009 */
|
|
|
2010
|
|
|
2011 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2012 "mp4 stss atom update");
|
|
|
2013
|
|
|
2014 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
|
2015
|
|
|
2016 if (data == NULL) {
|
|
|
2017 return NGX_OK;
|
|
|
2018 }
|
|
|
2019
|
|
|
2020 /* sync samples starts from 1 */
|
|
|
2021 start_sample = trak->start_sample + 1;
|
|
|
2022 entries = trak->sync_samples_entries;
|
|
|
2023
|
|
|
2024 entry = (uint32_t *) data->pos;
|
|
|
2025 end = (uint32_t *) data->last;
|
|
|
2026
|
|
|
2027 while (entry < end) {
|
|
|
2028 sample = ngx_mp4_get_32value(entry);
|
|
|
2029
|
|
|
2030 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2031 "start:%uD, sync:%uD", start_sample, sample);
|
|
|
2032
|
|
|
2033 if (sample >= start_sample) {
|
|
|
2034 goto found;
|
|
|
2035 }
|
|
|
2036
|
|
|
2037 entries--;
|
|
|
2038 entry++;
|
|
|
2039 }
|
|
|
2040
|
|
|
2041 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2042 "start sample is out of mp4 stss atom in \"%s\"",
|
|
|
2043 mp4->file.name.data);
|
|
|
2044
|
|
|
2045 return NGX_ERROR;
|
|
|
2046
|
|
|
2047 found:
|
|
|
2048
|
|
|
2049 data->pos = (u_char *) entry;
|
|
|
2050
|
|
|
2051 start_sample = trak->start_sample;
|
|
|
2052
|
|
|
2053 while (entry < end) {
|
|
|
2054 sample = ngx_mp4_get_32value(entry);
|
|
|
2055 sample -= start_sample;
|
|
|
2056 ngx_mp4_set_32value(entry, sample);
|
|
|
2057 entry++;
|
|
|
2058 }
|
|
|
2059
|
|
|
2060 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
|
2061 trak->size += atom_size;
|
|
|
2062
|
|
|
2063 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
|
2064 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
|
2065
|
|
|
2066 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
|
2067 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
|
2068
|
|
|
2069 return NGX_OK;
|
|
|
2070 }
|
|
|
2071
|
|
|
2072
|
|
|
2073 typedef struct {
|
|
|
2074 u_char size[4];
|
|
|
2075 u_char name[4];
|
|
|
2076 u_char version[1];
|
|
|
2077 u_char flags[3];
|
|
|
2078 u_char entries[4];
|
|
|
2079 } ngx_mp4_ctts_atom_t;
|
|
|
2080
|
|
|
2081 typedef struct {
|
|
|
2082 u_char count[4];
|
|
|
2083 u_char offset[4];
|
|
|
2084 } ngx_mp4_ctts_entry_t;
|
|
|
2085
|
|
|
2086
|
|
|
2087 static ngx_int_t
|
|
|
2088 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2089 {
|
|
|
2090 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2091 uint32_t entries;
|
|
|
2092 ngx_buf_t *atom, *data;
|
|
|
2093 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2094 ngx_http_mp4_trak_t *trak;
|
|
|
2095
|
|
|
2096 /* composition offsets atom */
|
|
|
2097
|
|
|
2098 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
|
2099
|
|
|
2100 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2101 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
|
2102 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
|
2103
|
|
|
2104 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
|
2105
|
|
|
2106 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2107 "composition offset entries:%uD", entries);
|
|
|
2108
|
|
|
2109 trak = ngx_mp4_last_trak(mp4);
|
|
|
2110 trak->composition_offset_entries = entries;
|
|
|
2111
|
|
|
2112 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
|
2113
|
|
|
2114 atom = &trak->ctts_atom_buf;
|
|
|
2115 atom->temporary = 1;
|
|
|
2116 atom->pos = atom_header;
|
|
|
2117 atom->last = atom_table;
|
|
|
2118
|
|
|
2119 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
|
2120
|
|
|
2121 if ((uint64_t) (atom_end - ctts_atom->version) > atom_data_size) {
|
|
|
2122 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2123 "\"%s\" mp4 ctts atom too large", mp4->file.name.data);
|
|
|
2124 return NGX_ERROR;
|
|
|
2125 }
|
|
|
2126
|
|
|
2127 data = &trak->ctts_data_buf;
|
|
|
2128 data->temporary = 1;
|
|
|
2129 data->pos = atom_table;
|
|
|
2130 data->last = atom_end;
|
|
|
2131
|
|
|
2132 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
|
2133 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
|
2134
|
|
|
2135 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2136
|
|
|
2137 return NGX_OK;
|
|
|
2138 }
|
|
|
2139
|
|
|
2140
|
|
|
2141 static void
|
|
|
2142 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2143 ngx_http_mp4_trak_t *trak)
|
|
|
2144 {
|
|
|
2145 size_t atom_size;
|
|
|
2146 uint32_t entries, count, start_sample;
|
|
|
2147 ngx_buf_t *atom, *data;
|
|
|
2148 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2149 ngx_mp4_ctts_entry_t *entry, *end;
|
|
|
2150
|
|
|
2151 /*
|
|
|
2152 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
|
2153 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2154 * atom which may reside after mdia.minf
|
|
|
2155 */
|
|
|
2156
|
|
|
2157 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2158 "mp4 ctts atom update");
|
|
|
2159
|
|
|
2160 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
|
2161
|
|
|
2162 if (data == NULL) {
|
|
|
2163 return;
|
|
|
2164 }
|
|
|
2165
|
|
|
2166 /* sync samples starts from 1 */
|
|
|
2167 start_sample = trak->start_sample + 1;
|
|
|
2168 entries = trak->composition_offset_entries;
|
|
|
2169 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
|
2170 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
|
2171
|
|
|
2172 while (entry < end) {
|
|
|
2173 count = ngx_mp4_get_32value(entry->count);
|
|
|
2174
|
|
|
2175 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2176 "start:%uD, count:%uD, offset:%uD",
|
|
|
2177 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
|
2178
|
|
|
2179 if (start_sample <= count) {
|
|
|
2180 count -= (start_sample - 1);
|
|
|
2181 ngx_mp4_set_32value(entry->count, count);
|
|
|
2182 goto found;
|
|
|
2183 }
|
|
|
2184
|
|
|
2185 start_sample -= count;
|
|
|
2186 entries--;
|
|
|
2187 entry++;
|
|
|
2188 }
|
|
|
2189
|
|
|
2190 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
|
2191 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
|
2192
|
|
|
2193 return;
|
|
|
2194
|
|
|
2195 found:
|
|
|
2196
|
|
|
2197 data->pos = (u_char *) entry;
|
|
|
2198 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
|
2199 trak->size += atom_size;
|
|
|
2200
|
|
|
2201 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
|
2202 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
|
2203
|
|
|
2204 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
|
2205 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
|
2206
|
|
|
2207 return;
|
|
|
2208 }
|
|
|
2209
|
|
|
2210
|
|
|
2211 typedef struct {
|
|
|
2212 u_char size[4];
|
|
|
2213 u_char name[4];
|
|
|
2214 u_char version[1];
|
|
|
2215 u_char flags[3];
|
|
|
2216 u_char entries[4];
|
|
|
2217 } ngx_mp4_stsc_atom_t;
|
|
|
2218
|
|
|
2219
|
|
|
2220 static ngx_int_t
|
|
|
2221 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2222 {
|
|
|
2223 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2224 uint32_t entries;
|
|
|
2225 ngx_buf_t *atom, *data;
|
|
|
2226 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2227 ngx_http_mp4_trak_t *trak;
|
|
|
2228
|
|
|
2229 /* sample-to-chunk atom */
|
|
|
2230
|
|
|
2231 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
|
2232
|
|
|
2233 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2234 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
|
2235 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
|
2236
|
|
|
2237 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
|
2238
|
|
|
2239 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2240 "sample-to-chunk entries:%uD", entries);
|
|
|
2241
|
|
|
2242 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
|
2243 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2244
|
|
|
2245 if ((uint64_t) (atom_end - stsc_atom->version) > atom_data_size) {
|
|
|
2246 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2247 "\"%s\" mp4 stsc atom too large",
|
|
|
2248 mp4->file.name.data);
|
|
|
2249 return NGX_ERROR;
|
|
|
2250 }
|
|
|
2251
|
|
|
2252 trak = ngx_mp4_last_trak(mp4);
|
|
|
2253 trak->sample_to_chunk_entries = entries;
|
|
|
2254
|
|
|
2255 atom = &trak->stsc_atom_buf;
|
|
|
2256 atom->temporary = 1;
|
|
|
2257 atom->pos = atom_header;
|
|
|
2258 atom->last = atom_table;
|
|
|
2259
|
|
|
2260 data = &trak->stsc_data_buf;
|
|
|
2261 data->temporary = 1;
|
|
|
2262 data->pos = atom_table;
|
|
|
2263 data->last = atom_end;
|
|
|
2264
|
|
|
2265 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
|
2266 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
|
2267
|
|
|
2268 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2269
|
|
|
2270 return NGX_OK;
|
|
|
2271 }
|
|
|
2272
|
|
|
2273
|
|
|
2274 static ngx_int_t
|
|
|
2275 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2276 ngx_http_mp4_trak_t *trak)
|
|
|
2277 {
|
|
|
2278 size_t atom_size;
|
|
|
2279 uint32_t start_sample, entries, chunk, samples, id,
|
|
|
2280 next_chunk, n;
|
|
|
2281 ngx_buf_t *atom, *data, *buf;
|
|
|
2282 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2283 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
|
2284
|
|
|
2285 /*
|
|
|
2286 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
|
2287 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2288 * atom which may reside after mdia.minf
|
|
|
2289 */
|
|
|
2290
|
|
|
2291 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2292 "mp4 stsc atom update");
|
|
|
2293
|
|
|
2294 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
|
2295
|
|
|
2296 if (data == NULL) {
|
|
|
2297 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2298 "no mp4 stsc atoms were found in \"%s\"",
|
|
|
2299 mp4->file.name.data);
|
|
|
2300 return NGX_ERROR;
|
|
|
2301 }
|
|
|
2302
|
|
|
2303 start_sample = (uint32_t) trak->start_sample;
|
|
|
2304 entries = trak->sample_to_chunk_entries - 1;
|
|
|
2305
|
|
|
2306 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
|
2307 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
|
2308
|
|
|
2309 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2310 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2311 id = ngx_mp4_get_32value(entry->id);
|
|
|
2312 entry++;
|
|
|
2313
|
|
|
2314 while (entry < end) {
|
|
|
2315
|
|
|
2316 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2317
|
|
|
2318 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2319 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
|
2320 "samples:%uD, id:%uD",
|
|
|
2321 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
|
2322
|
|
|
2323 n = (next_chunk - chunk) * samples;
|
|
|
2324
|
|
|
2325 if (start_sample <= n) {
|
|
|
2326 goto found;
|
|
|
2327 }
|
|
|
2328
|
|
|
2329 start_sample -= n;
|
|
|
2330
|
|
|
2331 chunk = next_chunk;
|
|
|
2332 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2333 id = ngx_mp4_get_32value(entry->id);
|
|
|
2334 entries--;
|
|
|
2335 entry++;
|
|
|
2336 }
|
|
|
2337
|
|
|
2338 next_chunk = trak->chunks;
|
|
|
2339
|
|
|
2340 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2341 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
|
2342 start_sample, chunk, next_chunk - chunk, samples);
|
|
|
2343
|
|
|
2344 n = (next_chunk - chunk) * samples;
|
|
|
2345
|
|
|
2346 if (start_sample > n) {
|
|
|
2347 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2348 "start time is out mp4 stsc chunks in \"%s\"",
|
|
|
2349 mp4->file.name.data);
|
|
|
2350 return NGX_ERROR;
|
|
|
2351 }
|
|
|
2352
|
|
|
2353 found:
|
|
|
2354
|
|
|
2355 entries++;
|
|
|
2356 entry--;
|
|
|
2357
|
|
|
2358 if (samples == 0) {
|
|
|
2359 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2360 "zero number of samples in \"%s\"",
|
|
|
2361 mp4->file.name.data);
|
|
|
2362 return NGX_ERROR;
|
|
|
2363 }
|
|
|
2364
|
|
|
2365 trak->start_chunk = chunk - 1;
|
|
|
2366
|
|
|
2367 trak->start_chunk += start_sample / samples;
|
|
|
2368 trak->chunk_samples = start_sample % samples;
|
|
|
2369
|
|
|
2370 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2371 "start chunk:%ui, samples:%uD",
|
|
|
2372 trak->start_chunk, trak->chunk_samples);
|
|
|
2373
|
|
|
2374 data->pos = (u_char *) entry;
|
|
|
2375 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
|
2376
|
|
|
2377 if (trak->chunk_samples) {
|
|
|
2378
|
|
|
2379 first = &trak->stsc_chunk_entry;
|
|
|
2380 ngx_mp4_set_32value(first->chunk, 1);
|
|
|
2381 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
|
2382 ngx_mp4_set_32value(first->id, id);
|
|
|
2383
|
|
|
2384 buf = &trak->stsc_chunk_buf;
|
|
|
2385 buf->temporary = 1;
|
|
|
2386 buf->pos = (u_char *) first;
|
|
|
2387 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2388
|
|
|
2389 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
|
2390
|
|
|
2391 ngx_mp4_set_32value(entry->chunk, 2);
|
|
|
2392
|
|
|
2393 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2394 }
|
|
|
2395
|
|
|
2396 while (++entry < end) {
|
|
|
2397 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2398 chunk -= trak->start_chunk;
|
|
|
2399 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
|
2400 }
|
|
|
2401
|
|
|
2402 trak->size += atom_size;
|
|
|
2403
|
|
|
2404 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
|
2405 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
|
2406
|
|
|
2407 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
|
2408 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
|
2409
|
|
|
2410 return NGX_OK;
|
|
|
2411 }
|
|
|
2412
|
|
|
2413
|
|
|
2414 typedef struct {
|
|
|
2415 u_char size[4];
|
|
|
2416 u_char name[4];
|
|
|
2417 u_char version[1];
|
|
|
2418 u_char flags[3];
|
|
|
2419 u_char uniform_size[4];
|
|
|
2420 u_char entries[4];
|
|
|
2421 } ngx_mp4_stsz_atom_t;
|
|
|
2422
|
|
|
2423
|
|
|
2424 static ngx_int_t
|
|
|
2425 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2426 {
|
|
|
2427 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2428 size_t atom_size;
|
|
|
2429 uint32_t entries, size;
|
|
|
2430 ngx_buf_t *atom, *data;
|
|
|
2431 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2432 ngx_http_mp4_trak_t *trak;
|
|
|
2433
|
|
|
2434 /* sample sizes atom */
|
|
|
2435
|
|
|
2436 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
|
2437
|
|
|
2438 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2439 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
|
2440 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
|
2441
|
|
|
2442 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
|
2443 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
|
2444
|
|
|
2445 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2446 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
|
2447
|
|
|
2448 trak = ngx_mp4_last_trak(mp4);
|
|
|
2449 trak->sample_sizes_entries = entries;
|
|
|
2450
|
|
|
2451 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
|
2452
|
|
|
2453 atom = &trak->stsz_atom_buf;
|
|
|
2454 atom->temporary = 1;
|
|
|
2455 atom->pos = atom_header;
|
|
|
2456 atom->last = atom_table;
|
|
|
2457
|
|
|
2458 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
|
2459
|
|
|
2460 if (size == 0) {
|
|
|
2461 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2462
|
|
|
2463 if ((uint64_t) (atom_end - stsz_atom->version) > atom_data_size) {
|
|
|
2464 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2465 "\"%s\" mp4 stsz atom too large",
|
|
|
2466 mp4->file.name.data);
|
|
|
2467 return NGX_ERROR;
|
|
|
2468 }
|
|
|
2469
|
|
|
2470 data = &trak->stsz_data_buf;
|
|
|
2471 data->temporary = 1;
|
|
|
2472 data->pos = atom_table;
|
|
|
2473 data->last = atom_end;
|
|
|
2474
|
|
|
2475 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
|
2476
|
|
|
2477 } else {
|
|
|
2478 /* if size != 0 then all samples are the same size */
|
|
|
2479 /* TODO : chunk samples */
|
|
|
2480 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
2481 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
2482 trak->size += atom_size;
|
|
|
2483 }
|
|
|
2484
|
|
|
2485 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2486
|
|
|
2487 return NGX_OK;
|
|
|
2488 }
|
|
|
2489
|
|
|
2490
|
|
|
2491 static void
|
|
|
2492 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2493 ngx_http_mp4_trak_t *trak)
|
|
|
2494 {
|
|
|
2495 size_t atom_size;
|
|
|
2496 uint32_t *pos, *end;
|
|
|
2497 ngx_buf_t *atom, *data;
|
|
|
2498 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2499
|
|
|
2500 /*
|
|
|
2501 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
|
2502 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2503 * atom which may reside after mdia.minf
|
|
|
2504 */
|
|
|
2505
|
|
|
2506 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2507 "mp4 stsz atom update");
|
|
|
2508
|
|
|
2509 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
|
2510
|
|
|
2511 if (data) {
|
|
|
2512 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
|
2513 end = (uint32_t *) data->pos;
|
|
|
2514
|
|
|
2515 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
|
2516 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
|
2517 }
|
|
|
2518
|
|
|
2519 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
640
|
2520 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
|
638
|
2521
|
|
|
2522 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
|
2523 trak->size += atom_size;
|
|
|
2524
|
|
|
2525 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
|
2526 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
|
2527
|
|
|
2528 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
|
2529 ngx_mp4_set_32value(stsz_atom->entries,
|
|
|
2530 trak->sample_sizes_entries - trak->start_sample);
|
|
|
2531 }
|
|
|
2532 }
|
|
|
2533
|
|
|
2534
|
|
|
2535 typedef struct {
|
|
|
2536 u_char size[4];
|
|
|
2537 u_char name[4];
|
|
|
2538 u_char version[1];
|
|
|
2539 u_char flags[3];
|
|
|
2540 u_char entries[4];
|
|
|
2541 } ngx_mp4_stco_atom_t;
|
|
|
2542
|
|
|
2543
|
|
|
2544 static ngx_int_t
|
|
|
2545 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2546 {
|
|
|
2547 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2548 uint32_t entries;
|
|
|
2549 ngx_buf_t *atom, *data;
|
|
|
2550 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2551 ngx_http_mp4_trak_t *trak;
|
|
|
2552
|
|
|
2553 /* chunk offsets atom */
|
|
|
2554
|
|
|
2555 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
|
2556
|
|
|
2557 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2558 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
|
2559 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
|
2560
|
|
|
2561 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
|
2562
|
|
|
2563 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2564
|
|
|
2565 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
|
2566 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2567
|
|
|
2568 if ((uint64_t) (atom_end - stco_atom->version) > atom_data_size) {
|
|
|
2569 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2570 "\"%s\" mp4 stco atom too large", mp4->file.name.data);
|
|
|
2571 return NGX_ERROR;
|
|
|
2572 }
|
|
|
2573
|
|
|
2574 trak = ngx_mp4_last_trak(mp4);
|
|
|
2575 trak->chunks = entries;
|
|
|
2576
|
|
640
|
2577 atom = &trak->stco_atom_buf;
|
|
638
|
2578 atom->temporary = 1;
|
|
|
2579 atom->pos = atom_header;
|
|
|
2580 atom->last = atom_table;
|
|
|
2581
|
|
640
|
2582 data = &trak->stco_data_buf;
|
|
638
|
2583 data->temporary = 1;
|
|
|
2584 data->pos = atom_table;
|
|
|
2585 data->last = atom_end;
|
|
|
2586
|
|
|
2587 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
|
2588 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
|
2589
|
|
|
2590 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2591
|
|
|
2592 return NGX_OK;
|
|
|
2593 }
|
|
|
2594
|
|
|
2595
|
|
|
2596 static ngx_int_t
|
|
|
2597 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2598 ngx_http_mp4_trak_t *trak)
|
|
|
2599 {
|
|
|
2600 size_t atom_size;
|
|
|
2601 ngx_buf_t *atom, *data;
|
|
|
2602 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2603
|
|
|
2604 /*
|
|
|
2605 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
|
2606 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2607 * atom which may reside after mdia.minf
|
|
|
2608 */
|
|
|
2609
|
|
|
2610 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2611 "mp4 stco atom update");
|
|
|
2612
|
|
|
2613 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2614
|
|
|
2615 if (data == NULL) {
|
|
|
2616 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2617 "no mp4 stco atoms were found in \"%s\"",
|
|
|
2618 mp4->file.name.data);
|
|
|
2619 return NGX_ERROR;
|
|
|
2620 }
|
|
|
2621
|
|
|
2622 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
|
2623 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
|
2624 trak->size += atom_size;
|
|
|
2625
|
|
|
2626 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
|
2627 trak->start_offset += trak->chunk_samples_size;
|
|
|
2628 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
|
2629
|
|
|
2630 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2631 "start chunk offset:%uD", trak->start_offset);
|
|
|
2632
|
|
|
2633 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
|
2634 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
|
2635
|
|
|
2636 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
|
2637 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2638
|
|
|
2639 return NGX_OK;
|
|
|
2640 }
|
|
|
2641
|
|
|
2642
|
|
|
2643 static void
|
|
|
2644 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2645 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
|
2646 {
|
|
|
2647 uint32_t offset, *entry, *end;
|
|
|
2648 ngx_buf_t *data;
|
|
|
2649
|
|
|
2650 /*
|
|
|
2651 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
|
2652 * minimal start offset of all traks and new moov atom size
|
|
|
2653 */
|
|
|
2654
|
|
|
2655 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2656 "mp4 stco atom adjustment");
|
|
|
2657
|
|
|
2658 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2659 entry = (uint32_t *) data->pos;
|
|
|
2660 end = (uint32_t *) data->last;
|
|
|
2661
|
|
|
2662 while (entry < end) {
|
|
|
2663 offset = ngx_mp4_get_32value(entry);
|
|
|
2664 offset += adjustment;
|
|
|
2665 ngx_mp4_set_32value(entry, offset);
|
|
|
2666 entry++;
|
|
|
2667 }
|
|
|
2668 }
|
|
|
2669
|
|
|
2670
|
|
640
|
2671 typedef struct {
|
|
|
2672 u_char size[4];
|
|
|
2673 u_char name[4];
|
|
|
2674 u_char version[1];
|
|
|
2675 u_char flags[3];
|
|
|
2676 u_char entries[4];
|
|
|
2677 } ngx_mp4_co64_atom_t;
|
|
|
2678
|
|
|
2679
|
|
|
2680 static ngx_int_t
|
|
|
2681 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2682 {
|
|
|
2683 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2684 uint32_t entries;
|
|
|
2685 ngx_buf_t *atom, *data;
|
|
|
2686 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2687 ngx_http_mp4_trak_t *trak;
|
|
|
2688
|
|
|
2689 /* chunk offsets atom */
|
|
|
2690
|
|
|
2691 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
|
|
|
2692
|
|
|
2693 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2694 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
|
|
|
2695 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
|
|
|
2696
|
|
|
2697 entries = ngx_mp4_get_32value(co64_atom->entries);
|
|
|
2698
|
|
|
2699 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2700
|
|
|
2701 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
|
|
|
2702 atom_end = atom_table + entries * sizeof(uint64_t);
|
|
|
2703
|
|
|
2704 if ((uint64_t) (atom_end - co64_atom->version) > atom_data_size) {
|
|
|
2705 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2706 "\"%s\" mp4 co64 atom too large", mp4->file.name.data);
|
|
|
2707 return NGX_ERROR;
|
|
|
2708 }
|
|
|
2709
|
|
|
2710 trak = ngx_mp4_last_trak(mp4);
|
|
|
2711 trak->chunks = entries;
|
|
|
2712
|
|
|
2713 atom = &trak->co64_atom_buf;
|
|
|
2714 atom->temporary = 1;
|
|
|
2715 atom->pos = atom_header;
|
|
|
2716 atom->last = atom_table;
|
|
|
2717
|
|
|
2718 data = &trak->co64_data_buf;
|
|
|
2719 data->temporary = 1;
|
|
|
2720 data->pos = atom_table;
|
|
|
2721 data->last = atom_end;
|
|
|
2722
|
|
|
2723 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
|
|
|
2724 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
|
|
|
2725
|
|
|
2726 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2727
|
|
|
2728 return NGX_OK;
|
|
|
2729 }
|
|
|
2730
|
|
|
2731
|
|
|
2732 static ngx_int_t
|
|
|
2733 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2734 ngx_http_mp4_trak_t *trak)
|
|
|
2735 {
|
|
|
2736 size_t atom_size;
|
|
|
2737 ngx_buf_t *atom, *data;
|
|
|
2738 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2739
|
|
|
2740 /*
|
|
|
2741 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
|
2742 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2743 * atom which may reside after mdia.minf
|
|
|
2744 */
|
|
|
2745
|
|
|
2746 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2747 "mp4 co64 atom update");
|
|
|
2748
|
|
|
2749 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2750
|
|
|
2751 if (data == NULL) {
|
|
|
2752 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2753 "no mp4 co64 atoms were found in \"%s\"",
|
|
|
2754 mp4->file.name.data);
|
|
|
2755 return NGX_ERROR;
|
|
|
2756 }
|
|
|
2757
|
|
|
2758 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
|
2759 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
|
2760 trak->size += atom_size;
|
|
|
2761
|
|
|
2762 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
|
2763 trak->start_offset += trak->chunk_samples_size;
|
|
|
2764 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
|
2765
|
|
|
2766 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2767 "start chunk offset:%uL", trak->start_offset);
|
|
|
2768
|
|
|
2769 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
|
2770 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
|
2771
|
|
|
2772 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
|
2773 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2774
|
|
|
2775 return NGX_OK;
|
|
|
2776 }
|
|
|
2777
|
|
|
2778
|
|
|
2779 static void
|
|
|
2780 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2781 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
|
2782 {
|
|
|
2783 uint64_t offset, *entry, *end;
|
|
|
2784 ngx_buf_t *data;
|
|
|
2785
|
|
|
2786 /*
|
|
|
2787 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
|
2788 * minimal start offset of all traks and new moov atom size
|
|
|
2789 */
|
|
|
2790
|
|
|
2791 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2792 "mp4 co64 atom adjustment");
|
|
|
2793
|
|
|
2794 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2795 entry = (uint64_t *) data->pos;
|
|
|
2796 end = (uint64_t *) data->last;
|
|
|
2797
|
|
|
2798 while (entry < end) {
|
|
|
2799 offset = ngx_mp4_get_64value(entry);
|
|
|
2800 offset += adjustment;
|
|
|
2801 ngx_mp4_set_64value(entry, offset);
|
|
|
2802 entry++;
|
|
|
2803 }
|
|
|
2804 }
|
|
|
2805
|
|
|
2806
|
|
638
|
2807 static char *
|
|
|
2808 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2809 {
|
|
|
2810 ngx_http_core_loc_conf_t *clcf;
|
|
|
2811
|
|
|
2812 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
2813 clcf->handler = ngx_http_mp4_handler;
|
|
|
2814
|
|
|
2815 return NGX_CONF_OK;
|
|
|
2816 }
|
|
|
2817
|
|
|
2818
|
|
|
2819 static void *
|
|
|
2820 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
|
2821 {
|
|
|
2822 ngx_http_mp4_conf_t *conf;
|
|
|
2823
|
|
|
2824 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
|
2825 if (conf == NULL) {
|
|
|
2826 return NULL;
|
|
|
2827 }
|
|
|
2828
|
|
|
2829 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2830 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2831
|
|
|
2832 return conf;
|
|
|
2833 }
|
|
|
2834
|
|
|
2835
|
|
|
2836 static char *
|
|
|
2837 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
2838 {
|
|
|
2839 ngx_http_mp4_conf_t *prev = parent;
|
|
|
2840 ngx_http_mp4_conf_t *conf = child;
|
|
|
2841
|
|
|
2842 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
|
2843 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
|
2844 10 * 1024 * 1024);
|
|
|
2845
|
|
|
2846 return NGX_CONF_OK;
|
|
|
2847 }
|
