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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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642
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190 ((u_char *) (p))[0] = (u_char) ((uint64_t) (n) >> 56); \
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191 ((u_char *) (p))[1] = (u_char) ((uint64_t) (n) >> 48); \
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192 ((u_char *) (p))[2] = (u_char) ((uint64_t) (n) >> 40); \
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193 ((u_char *) (p))[3] = (u_char) ((uint64_t) (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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638
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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,
|
|
|
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
|
|
642
|
502 /*
|
|
|
503 * A Flash player may send start value with a lot of digits
|
|
|
504 * after dot so strtod() is used instead of atofp(). NaNs and
|
|
|
505 * infinities become negative numbers after (int) conversion.
|
|
|
506 */
|
|
|
507
|
|
|
508 ngx_set_errno(0);
|
|
|
509 start = (int) (strtod((char *) value.data, NULL) * 1000);
|
|
|
510
|
|
|
511 if (ngx_errno == 0 && start >= 0) {
|
|
638
|
512 r->allow_ranges = 0;
|
|
|
513
|
|
|
514 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t));
|
|
|
515 if (mp4 == NULL) {
|
|
|
516 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
517 }
|
|
|
518
|
|
|
519 mp4->file.fd = of.fd;
|
|
|
520 mp4->file.name = path;
|
|
|
521 mp4->file.log = r->connection->log;;
|
|
|
522 mp4->end = of.size;
|
|
|
523 mp4->start = (ngx_uint_t) start;
|
|
|
524 mp4->request = r;
|
|
|
525
|
|
|
526 switch (ngx_http_mp4_process(mp4)) {
|
|
|
527
|
|
|
528 case NGX_DECLINED:
|
|
|
529 if (mp4->buffer) {
|
|
|
530 ngx_pfree(r->pool, mp4->buffer);
|
|
|
531 }
|
|
|
532
|
|
|
533 ngx_pfree(r->pool, mp4);
|
|
|
534 mp4 = NULL;
|
|
|
535
|
|
|
536 break;
|
|
|
537
|
|
|
538 case NGX_OK:
|
|
|
539 r->headers_out.content_length_n = mp4->content_length;
|
|
|
540 break;
|
|
|
541
|
|
|
542 default: /* NGX_ERROR */
|
|
|
543 if (mp4->buffer) {
|
|
|
544 ngx_pfree(r->pool, mp4->buffer);
|
|
|
545 }
|
|
|
546
|
|
|
547 ngx_pfree(r->pool, mp4);
|
|
|
548
|
|
|
549 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
550 }
|
|
|
551 }
|
|
|
552 }
|
|
|
553 }
|
|
|
554
|
|
|
555 log->action = "sending mp4 to client";
|
|
|
556
|
|
|
557 if (clcf->directio <= of.size) {
|
|
|
558
|
|
|
559 /*
|
|
|
560 * DIRECTIO is set on transfer only
|
|
|
561 * to allow kernel to cache "moov" atom
|
|
|
562 */
|
|
|
563
|
|
|
564 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) {
|
|
|
565 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
566 ngx_directio_on_n " \"%s\" failed", path.data);
|
|
|
567 }
|
|
|
568
|
|
|
569 of.is_directio = 1;
|
|
|
570
|
|
|
571 if (mp4) {
|
|
|
572 mp4->file.directio = 1;
|
|
|
573 }
|
|
|
574 }
|
|
|
575
|
|
|
576 r->headers_out.status = NGX_HTTP_OK;
|
|
|
577 r->headers_out.last_modified_time = of.mtime;
|
|
|
578
|
|
|
579 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
|
580 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
581 }
|
|
|
582
|
|
|
583 if (mp4 == NULL) {
|
|
|
584 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
585 if (b == NULL) {
|
|
|
586 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
587 }
|
|
|
588
|
|
|
589 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
590 if (b->file == NULL) {
|
|
|
591 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
592 }
|
|
|
593 }
|
|
|
594
|
|
|
595 rc = ngx_http_send_header(r);
|
|
|
596
|
|
|
597 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
598 return rc;
|
|
|
599 }
|
|
|
600
|
|
|
601 if (mp4) {
|
|
|
602 return ngx_http_output_filter(r, mp4->out);
|
|
|
603 }
|
|
|
604
|
|
|
605 b->file_pos = 0;
|
|
|
606 b->file_last = of.size;
|
|
|
607
|
|
|
608 b->in_file = b->file_last ? 1 : 0;
|
|
|
609 b->last_buf = 1;
|
|
|
610 b->last_in_chain = 1;
|
|
|
611
|
|
|
612 b->file->fd = of.fd;
|
|
|
613 b->file->name = path;
|
|
|
614 b->file->log = log;
|
|
|
615 b->file->directio = of.is_directio;
|
|
|
616
|
|
|
617 out.buf = b;
|
|
|
618 out.next = NULL;
|
|
|
619
|
|
|
620 return ngx_http_output_filter(r, &out);
|
|
|
621 }
|
|
|
622
|
|
|
623
|
|
|
624 static ngx_int_t
|
|
|
625 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
|
626 {
|
|
|
627 off_t start_offset, adjustment;
|
|
|
628 ngx_int_t rc;
|
|
|
629 ngx_uint_t i, j;
|
|
|
630 ngx_chain_t **prev;
|
|
|
631 ngx_http_mp4_trak_t *trak;
|
|
|
632 ngx_http_mp4_conf_t *conf;
|
|
|
633
|
|
|
634 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
635 "mp4 start:%ui", mp4->start);
|
|
|
636
|
|
|
637 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
638
|
|
|
639 mp4->buffer_size = conf->buffer_size;
|
|
|
640
|
|
|
641 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
|
642 if (rc != NGX_OK) {
|
|
|
643 return rc;
|
|
|
644 }
|
|
|
645
|
|
|
646 if (mp4->trak.nelts == 0) {
|
|
|
647 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
648 "no mp4 trak atoms were found in \"%s\"",
|
|
|
649 mp4->file.name.data);
|
|
|
650 return NGX_ERROR;
|
|
|
651 }
|
|
|
652
|
|
|
653 if (mp4->mdat_atom.buf == NULL) {
|
|
|
654 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
655 "no mp4 mdat atom was found in \"%s\"",
|
|
|
656 mp4->file.name.data);
|
|
|
657 return NGX_ERROR;
|
|
|
658 }
|
|
|
659
|
|
|
660 prev = &mp4->out;
|
|
|
661
|
|
|
662 if (mp4->ftyp_atom.buf) {
|
|
|
663 *prev = &mp4->ftyp_atom;
|
|
|
664 prev = &mp4->ftyp_atom.next;
|
|
|
665 }
|
|
|
666
|
|
|
667 *prev = &mp4->moov_atom;
|
|
|
668 prev = &mp4->moov_atom.next;
|
|
|
669
|
|
|
670 if (mp4->mvhd_atom.buf) {
|
|
|
671 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
|
672 *prev = &mp4->mvhd_atom;
|
|
|
673 prev = &mp4->mvhd_atom.next;
|
|
|
674 }
|
|
|
675
|
|
|
676 start_offset = mp4->end;
|
|
|
677 trak = mp4->trak.elts;
|
|
|
678
|
|
|
679 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
|
680
|
|
|
681 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
682 return NGX_ERROR;
|
|
|
683 }
|
|
|
684
|
|
|
685 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
686 return NGX_ERROR;
|
|
|
687 }
|
|
|
688
|
|
|
689 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
|
690
|
|
|
691 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
692 return NGX_ERROR;
|
|
|
693 }
|
|
|
694
|
|
|
695 ngx_http_mp4_update_stsz_atom(mp4, &trak[i]);
|
|
|
696
|
|
640
|
697 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
698 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
699 return NGX_ERROR;
|
|
|
700 }
|
|
|
701
|
|
|
702 } else {
|
|
|
703 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
704 return NGX_ERROR;
|
|
|
705 }
|
|
638
|
706 }
|
|
|
707
|
|
|
708 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
|
709 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
|
710 trak[i].size += trak[i].mdhd_size;
|
|
|
711 trak[i].size += trak[i].hdlr_size;
|
|
|
712 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
|
713 trak[i].size += trak[i].tkhd_size;
|
|
|
714 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
|
715
|
|
|
716 mp4->moov_size += trak[i].size;
|
|
|
717
|
|
|
718 if (start_offset > trak[i].start_offset) {
|
|
|
719 start_offset = trak[i].start_offset;
|
|
|
720 }
|
|
|
721
|
|
|
722 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
|
723 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
|
724
|
|
|
725 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
|
726 if (trak[i].out[j].buf) {
|
|
|
727 *prev = &trak[i].out[j];
|
|
|
728 prev = &trak[i].out[j].next;
|
|
|
729 }
|
|
|
730 }
|
|
|
731 }
|
|
|
732
|
|
|
733 mp4->moov_size += 8;
|
|
|
734
|
|
|
735 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
|
736 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
|
737 mp4->content_length += mp4->moov_size;
|
|
|
738
|
|
|
739 *prev = &mp4->mdat_atom;
|
|
|
740
|
|
|
741 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
|
742 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
|
743 - start_offset;
|
|
|
744
|
|
|
745 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
746 "mp4 adjustment:%D", adjustment);
|
|
|
747
|
|
|
748 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
640
|
749 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
750 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
|
751 } else {
|
|
|
752 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
|
753 }
|
|
638
|
754 }
|
|
|
755
|
|
|
756 return NGX_OK;
|
|
|
757 }
|
|
|
758
|
|
|
759
|
|
|
760 typedef struct {
|
|
|
761 u_char size[4];
|
|
|
762 u_char name[4];
|
|
|
763 } ngx_mp4_atom_header_t;
|
|
|
764
|
|
|
765 typedef struct {
|
|
|
766 u_char size[4];
|
|
|
767 u_char name[4];
|
|
|
768 u_char size64[8];
|
|
|
769 } ngx_mp4_atom_header64_t;
|
|
|
770
|
|
|
771
|
|
|
772 static ngx_int_t
|
|
|
773 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
|
774 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
|
775 {
|
|
|
776 off_t end;
|
|
|
777 size_t atom_header_size;
|
|
|
778 u_char *atom_header, *atom_name;
|
|
|
779 uint64_t atom_size;
|
|
|
780 ngx_int_t rc;
|
|
|
781 ngx_uint_t n;
|
|
|
782
|
|
|
783 end = mp4->offset + atom_data_size;
|
|
|
784
|
|
|
785 while (mp4->offset < end) {
|
|
|
786
|
|
|
787 if (mp4->buffer_pos + sizeof(uint32_t) > mp4->buffer_end) {
|
|
|
788 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
789 return NGX_ERROR;
|
|
|
790 }
|
|
|
791 }
|
|
|
792
|
|
|
793 atom_header = mp4->buffer_pos;
|
|
|
794 atom_size = ngx_mp4_get_32value(atom_header);
|
|
|
795 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
796
|
|
|
797 if (atom_size == 0) {
|
|
|
798 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
799 "mp4 atom end");
|
|
|
800 return NGX_OK;
|
|
|
801 }
|
|
|
802
|
|
|
803 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
|
804
|
|
|
805 if (atom_size == 1) {
|
|
|
806
|
|
|
807 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header64_t)
|
|
|
808 > mp4->buffer_end)
|
|
|
809 {
|
|
|
810 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
811 return NGX_ERROR;
|
|
|
812 }
|
|
|
813
|
|
|
814 atom_header = mp4->buffer_pos;
|
|
|
815 }
|
|
|
816
|
|
|
817 /* 64-bit atom size */
|
|
|
818 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
|
819 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
820
|
|
|
821 } else {
|
|
|
822 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
823 "\"%s\" mp4 atom is too small:%uL",
|
|
|
824 mp4->file.name.data, atom_size);
|
|
|
825 return NGX_ERROR;
|
|
|
826 }
|
|
|
827 }
|
|
|
828
|
|
|
829 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header_t) > mp4->buffer_end) {
|
|
|
830 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
|
831 return NGX_ERROR;
|
|
|
832 }
|
|
|
833
|
|
|
834 atom_header = mp4->buffer_pos;
|
|
|
835 }
|
|
|
836
|
|
|
837 atom_name = atom_header + sizeof(uint32_t);
|
|
|
838
|
|
|
839 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
840 "mp4 atom: %*s @%O:%uL",
|
|
|
841 4, atom_name, mp4->offset, atom_size);
|
|
|
842
|
|
|
843 for (n = 0; atom[n].name; n++) {
|
|
|
844
|
|
|
845 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
|
846
|
|
|
847 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
|
848
|
|
|
849 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
|
850 if (rc != NGX_OK) {
|
|
|
851 return rc;
|
|
|
852 }
|
|
|
853
|
|
|
854 goto next;
|
|
|
855 }
|
|
|
856 }
|
|
|
857
|
|
|
858 ngx_mp4_atom_next(mp4, atom_size);
|
|
|
859
|
|
|
860 next:
|
|
|
861 continue;
|
|
|
862 }
|
|
|
863
|
|
|
864 return NGX_OK;
|
|
|
865 }
|
|
|
866
|
|
|
867
|
|
|
868 static ngx_int_t
|
|
|
869 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4)
|
|
|
870 {
|
|
|
871 ngx_int_t n;
|
|
|
872
|
|
|
873 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
|
874 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
|
875 }
|
|
|
876
|
|
|
877 if (mp4->buffer == NULL) {
|
|
|
878 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
|
879 if (mp4->buffer == NULL) {
|
|
|
880 return NGX_ERROR;
|
|
|
881 }
|
|
|
882
|
|
|
883 mp4->buffer_start = mp4->buffer;
|
|
|
884 mp4->buffer_end = mp4->buffer + mp4->buffer_size;
|
|
|
885 }
|
|
|
886
|
|
|
887 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
|
888 mp4->offset);
|
|
|
889
|
|
|
890 if (n == NGX_ERROR) {
|
|
|
891 return NGX_ERROR;
|
|
|
892 }
|
|
|
893
|
|
|
894 if (n == 0) {
|
|
|
895 return NGX_OK;
|
|
|
896 }
|
|
|
897
|
|
|
898 mp4->buffer_pos = mp4->buffer_start;
|
|
|
899
|
|
|
900 return NGX_OK;
|
|
|
901 }
|
|
|
902
|
|
|
903
|
|
|
904 static ngx_int_t
|
|
|
905 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
906 {
|
|
|
907 u_char *ftyp_atom;
|
|
|
908 size_t atom_size;
|
|
|
909 ngx_buf_t *atom;
|
|
|
910
|
|
|
911 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
|
912
|
|
|
913 if (atom_data_size > 1024) {
|
|
|
914 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
915 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
|
916 mp4->file.name.data, atom_data_size);
|
|
|
917 return NGX_ERROR;
|
|
|
918 }
|
|
|
919
|
|
|
920 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
921
|
|
|
922 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
|
923 if (ftyp_atom == NULL) {
|
|
|
924 return NGX_ERROR;
|
|
|
925 }
|
|
|
926
|
|
|
927 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
|
928 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
|
929
|
|
|
930 /*
|
|
|
931 * only moov atom content is guaranteed to be in mp4->buffer
|
|
|
932 * during sending response, so ftyp atom content should be copied
|
|
|
933 */
|
|
|
934 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
|
935 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
|
936
|
|
|
937 atom = &mp4->ftyp_atom_buf;
|
|
|
938 atom->temporary = 1;
|
|
|
939 atom->pos = ftyp_atom;
|
|
|
940 atom->last = ftyp_atom + atom_size;
|
|
|
941
|
|
|
942 mp4->ftyp_atom.buf = atom;
|
|
|
943 mp4->ftyp_size = atom_size;
|
|
|
944 mp4->content_length = atom_size;
|
|
|
945
|
|
|
946 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
947
|
|
|
948 return NGX_OK;
|
|
|
949 }
|
|
|
950
|
|
|
951
|
|
|
952 /*
|
|
|
953 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
|
954 * will be set to this buffer part after moov atom processing.
|
|
|
955 */
|
|
|
956 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
|
957
|
|
|
958 static ngx_int_t
|
|
|
959 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
960 {
|
|
|
961 ngx_int_t rc;
|
|
|
962 ngx_uint_t no_mdat;
|
|
|
963 ngx_buf_t *atom;
|
|
|
964 ngx_http_mp4_conf_t *conf;
|
|
|
965
|
|
|
966 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
|
967
|
|
|
968 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
|
969
|
|
|
970 if (no_mdat && mp4->start == 0) {
|
|
|
971 /*
|
|
|
972 * send original file if moov atom resides before
|
|
|
973 * mdat atom and client requests integral file
|
|
|
974 */
|
|
|
975 return NGX_DECLINED;
|
|
|
976 }
|
|
|
977
|
|
|
978 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
979
|
|
|
980 if (atom_data_size > mp4->buffer_size) {
|
|
|
981
|
|
|
982 if (atom_data_size > conf->max_buffer_size) {
|
|
|
983 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
984 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
|
985 "you may want to increase mp4_max_buffer_size",
|
|
|
986 mp4->file.name.data, atom_data_size);
|
|
|
987 return NGX_ERROR;
|
|
|
988 }
|
|
|
989
|
|
|
990 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
|
991 mp4->buffer = NULL;
|
|
|
992 mp4->buffer_pos = NULL;
|
|
|
993 mp4->buffer_end = NULL;
|
|
|
994
|
|
|
995 mp4->buffer_size = (size_t) atom_data_size
|
|
|
996 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
|
997 }
|
|
|
998
|
|
|
999 mp4->trak.elts = &mp4->traks;
|
|
|
1000 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
|
1001 mp4->trak.nalloc = 2;
|
|
|
1002 mp4->trak.pool = mp4->request->pool;
|
|
|
1003
|
|
|
1004 atom = &mp4->moov_atom_buf;
|
|
|
1005 atom->temporary = 1;
|
|
|
1006 atom->pos = mp4->moov_atom_header;
|
|
|
1007 atom->last = mp4->moov_atom_header + 8;
|
|
|
1008
|
|
|
1009 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
|
1010
|
|
|
1011 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
|
1012
|
|
|
1013 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
|
1014
|
|
|
1015 if (no_mdat) {
|
|
|
1016 mp4->buffer_start = mp4->buffer_pos;
|
|
|
1017 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
|
1018
|
|
|
1019 } else {
|
|
|
1020 /* skip atoms after moov atom */
|
|
|
1021 mp4->offset = mp4->end;
|
|
|
1022 }
|
|
|
1023
|
|
|
1024 return rc;
|
|
|
1025 }
|
|
|
1026
|
|
|
1027
|
|
|
1028 static ngx_int_t
|
|
|
1029 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1030 {
|
|
|
1031 ngx_buf_t *data;
|
|
|
1032
|
|
|
1033 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
|
1034
|
|
|
1035 data = &mp4->mdat_data_buf;
|
|
|
1036 data->file = &mp4->file;
|
|
|
1037 data->in_file = 1;
|
|
|
1038 data->last_buf = 1;
|
|
|
1039 data->last_in_chain = 1;
|
|
|
1040 data->file_last = mp4->offset + atom_data_size;
|
|
|
1041
|
|
|
1042 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
|
1043 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
|
1044 mp4->mdat_data.buf = data;
|
|
|
1045
|
|
|
1046 if (mp4->trak.nelts) {
|
|
|
1047 /* skip atoms after mdat atom */
|
|
|
1048 mp4->offset = mp4->end;
|
|
|
1049
|
|
|
1050 } else {
|
|
|
1051 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1052 }
|
|
|
1053
|
|
|
1054 return NGX_OK;
|
|
|
1055 }
|
|
|
1056
|
|
|
1057
|
|
|
1058 static size_t
|
|
|
1059 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
|
1060 {
|
|
|
1061 off_t atom_data_size;
|
|
|
1062 u_char *atom_header;
|
|
|
1063 uint32_t atom_header_size;
|
|
|
1064 uint64_t atom_size;
|
|
|
1065 ngx_buf_t *atom;
|
|
|
1066
|
|
|
1067 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
|
1068 mp4->mdat_data.buf->file_pos = start_offset;
|
|
|
1069 mp4->content_length += atom_data_size;
|
|
|
1070
|
|
|
1071 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1072 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
|
1073
|
|
|
1074 atom_header = mp4->mdat_atom_header;
|
|
|
1075
|
|
642
|
1076 if ((uint64_t) atom_data_size > 0xffffffff) {
|
|
638
|
1077 atom_size = 1;
|
|
|
1078 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
1079 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
|
1080 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
|
1081 } else {
|
|
|
1082 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
|
1083 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
1084 }
|
|
|
1085
|
|
|
1086 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1087 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
|
1088
|
|
|
1089 atom = &mp4->mdat_atom_buf;
|
|
|
1090 atom->temporary = 1;
|
|
|
1091 atom->pos = atom_header;
|
|
|
1092 atom->last = atom_header + atom_header_size;
|
|
|
1093
|
|
|
1094 return atom_header_size;
|
|
|
1095 }
|
|
|
1096
|
|
|
1097
|
|
|
1098 typedef struct {
|
|
|
1099 u_char size[4];
|
|
|
1100 u_char name[4];
|
|
|
1101 u_char version[1];
|
|
|
1102 u_char flags[3];
|
|
|
1103 u_char creation_time[4];
|
|
|
1104 u_char modification_time[4];
|
|
|
1105 u_char timescale[4];
|
|
|
1106 u_char duration[4];
|
|
|
1107 u_char rate[4];
|
|
|
1108 u_char volume[2];
|
|
|
1109 u_char reserved[10];
|
|
|
1110 u_char matrix[36];
|
|
|
1111 u_char preview_time[4];
|
|
|
1112 u_char preview_duration[4];
|
|
|
1113 u_char poster_time[4];
|
|
|
1114 u_char selection_time[4];
|
|
|
1115 u_char selection_duration[4];
|
|
|
1116 u_char current_time[4];
|
|
|
1117 u_char next_track_id[4];
|
|
|
1118 } ngx_mp4_mvhd_atom_t;
|
|
|
1119
|
|
|
1120 typedef struct {
|
|
|
1121 u_char size[4];
|
|
|
1122 u_char name[4];
|
|
|
1123 u_char version[1];
|
|
|
1124 u_char flags[3];
|
|
|
1125 u_char creation_time[8];
|
|
|
1126 u_char modification_time[8];
|
|
|
1127 u_char timescale[4];
|
|
|
1128 u_char duration[8];
|
|
|
1129 u_char rate[4];
|
|
|
1130 u_char volume[2];
|
|
|
1131 u_char reserved[10];
|
|
|
1132 u_char matrix[36];
|
|
|
1133 u_char preview_time[4];
|
|
|
1134 u_char preview_duration[4];
|
|
|
1135 u_char poster_time[4];
|
|
|
1136 u_char selection_time[4];
|
|
|
1137 u_char selection_duration[4];
|
|
|
1138 u_char current_time[4];
|
|
|
1139 u_char next_track_id[4];
|
|
|
1140 } ngx_mp4_mvhd64_atom_t;
|
|
|
1141
|
|
|
1142
|
|
|
1143 static ngx_int_t
|
|
|
1144 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1145 {
|
|
|
1146 u_char *atom_header;
|
|
|
1147 size_t atom_size;
|
|
|
1148 uint32_t timescale;
|
|
|
1149 uint64_t duration;
|
|
|
1150 ngx_buf_t *atom;
|
|
|
1151 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
|
1152 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
|
1153
|
|
|
1154 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
|
1155
|
|
|
1156 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1157 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
|
1158 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
|
1159 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
|
1160
|
|
|
1161 if (mvhd_atom->version[0] == 0) {
|
|
|
1162 /* version 0: 32-bit duration */
|
|
|
1163 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
|
1164 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
|
1165
|
|
|
1166 } else {
|
|
|
1167 /* version 1: 64-bit duration */
|
|
|
1168 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
|
1169 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
|
1170 }
|
|
|
1171
|
|
|
1172 mp4->timescale = timescale;
|
|
|
1173
|
|
|
1174 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1175 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1176 timescale, duration, (double) duration / timescale);
|
|
|
1177
|
|
|
1178 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1179
|
|
|
1180 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1181 "mvhd new duration:%uL, time:%.3fs",
|
|
|
1182 duration, (double) duration / timescale);
|
|
|
1183
|
|
|
1184 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1185 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
|
1186
|
|
|
1187 if (mvhd_atom->version[0] == 0) {
|
|
|
1188 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
|
1189
|
|
|
1190 } else {
|
|
|
1191 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
|
1192 }
|
|
|
1193
|
|
|
1194 atom = &mp4->mvhd_atom_buf;
|
|
|
1195 atom->temporary = 1;
|
|
|
1196 atom->pos = atom_header;
|
|
|
1197 atom->last = atom_header + atom_size;
|
|
|
1198
|
|
|
1199 mp4->mvhd_atom.buf = atom;
|
|
|
1200
|
|
|
1201 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1202
|
|
|
1203 return NGX_OK;
|
|
|
1204 }
|
|
|
1205
|
|
|
1206
|
|
|
1207 static ngx_int_t
|
|
|
1208 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1209 {
|
|
|
1210 u_char *atom_header, *atom_end;
|
|
|
1211 off_t atom_file_end;
|
|
|
1212 ngx_int_t rc;
|
|
|
1213 ngx_buf_t *atom;
|
|
|
1214 ngx_http_mp4_trak_t *trak;
|
|
|
1215
|
|
|
1216 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
|
1217
|
|
|
1218 trak = ngx_array_push(&mp4->trak);
|
|
|
1219 if (trak == NULL) {
|
|
|
1220 return NGX_ERROR;
|
|
|
1221 }
|
|
|
1222
|
|
|
1223 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1224
|
|
|
1225 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1226 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
|
1227
|
|
|
1228 atom = &trak->trak_atom_buf;
|
|
|
1229 atom->temporary = 1;
|
|
|
1230 atom->pos = atom_header;
|
|
|
1231 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1232
|
|
|
1233 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
|
1234
|
|
|
1235 atom_end = mp4->buffer_pos + atom_data_size;
|
|
|
1236 atom_file_end = mp4->offset + atom_data_size;
|
|
|
1237
|
|
|
1238 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
|
1239
|
|
|
1240 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1241 "mp4 trak atom: %i", rc);
|
|
|
1242
|
|
|
1243 if (rc == NGX_DECLINED) {
|
|
|
1244 /* skip this trak */
|
|
|
1245 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1246 mp4->trak.nelts--;
|
|
|
1247 mp4->buffer_pos = atom_end;
|
|
|
1248 mp4->offset = atom_file_end;
|
|
|
1249 return NGX_OK;
|
|
|
1250 }
|
|
|
1251
|
|
|
1252 return rc;
|
|
|
1253 }
|
|
|
1254
|
|
|
1255
|
|
|
1256 static void
|
|
|
1257 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1258 ngx_http_mp4_trak_t *trak)
|
|
|
1259 {
|
|
|
1260 ngx_buf_t *atom;
|
|
|
1261
|
|
|
1262 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1263 atom = &trak->trak_atom_buf;
|
|
|
1264 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1265 }
|
|
|
1266
|
|
|
1267
|
|
|
1268 static ngx_int_t
|
|
|
1269 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1270 {
|
|
|
1271 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1272 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
|
1273 mp4->file.name.data);
|
|
|
1274
|
|
|
1275 return NGX_ERROR;
|
|
|
1276 }
|
|
|
1277
|
|
|
1278
|
|
|
1279 typedef struct {
|
|
|
1280 u_char size[4];
|
|
|
1281 u_char name[4];
|
|
|
1282 u_char version[1];
|
|
|
1283 u_char flags[3];
|
|
|
1284 u_char creation_time[4];
|
|
|
1285 u_char modification_time[4];
|
|
|
1286 u_char track_id[4];
|
|
|
1287 u_char reserved1[4];
|
|
|
1288 u_char duration[4];
|
|
|
1289 u_char reserved2[8];
|
|
|
1290 u_char layer[2];
|
|
|
1291 u_char group[2];
|
|
|
1292 u_char volume[2];
|
|
|
1293 u_char reverved3[2];
|
|
|
1294 u_char matrix[36];
|
|
|
1295 u_char width[4];
|
|
|
1296 u_char heigth[4];
|
|
|
1297 } ngx_mp4_tkhd_atom_t;
|
|
|
1298
|
|
|
1299 typedef struct {
|
|
|
1300 u_char size[4];
|
|
|
1301 u_char name[4];
|
|
|
1302 u_char version[1];
|
|
|
1303 u_char flags[3];
|
|
|
1304 u_char creation_time[8];
|
|
|
1305 u_char modification_time[8];
|
|
|
1306 u_char track_id[4];
|
|
|
1307 u_char reserved1[4];
|
|
|
1308 u_char duration[8];
|
|
|
1309 u_char reserved2[8];
|
|
|
1310 u_char layer[2];
|
|
|
1311 u_char group[2];
|
|
|
1312 u_char volume[2];
|
|
|
1313 u_char reverved3[2];
|
|
|
1314 u_char matrix[36];
|
|
|
1315 u_char width[4];
|
|
|
1316 u_char heigth[4];
|
|
|
1317 } ngx_mp4_tkhd64_atom_t;
|
|
|
1318
|
|
|
1319
|
|
|
1320 static ngx_int_t
|
|
|
1321 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1322 {
|
|
|
1323 u_char *atom_header;
|
|
|
1324 size_t atom_size;
|
|
|
1325 uint64_t duration;
|
|
|
1326 ngx_buf_t *atom;
|
|
|
1327 ngx_http_mp4_trak_t *trak;
|
|
|
1328 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
|
1329 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
|
1330
|
|
|
1331 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
|
1332
|
|
|
1333 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1334 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
|
1335 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
|
1336 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
|
1337
|
|
|
1338 if (tkhd_atom->version[0] == 0) {
|
|
|
1339 /* version 0: 32-bit duration */
|
|
|
1340 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
|
1341
|
|
|
1342 } else {
|
|
|
1343 /* version 1: 64-bit duration */
|
|
|
1344 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
|
1345 }
|
|
|
1346
|
|
|
1347 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1348 "tkhd duration:%uL, time:%.3fs",
|
|
|
1349 duration, (double) duration / mp4->timescale);
|
|
|
1350
|
|
|
1351 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
|
1352
|
|
|
1353 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1354 "tkhd new duration:%uL, time:%.3fs",
|
|
|
1355 duration, (double) duration / mp4->timescale);
|
|
|
1356
|
|
|
1357 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1358
|
|
|
1359 trak = ngx_mp4_last_trak(mp4);
|
|
|
1360 trak->tkhd_size = atom_size;
|
|
|
1361
|
|
|
1362 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
|
1363
|
|
|
1364 if (tkhd_atom->version[0] == 0) {
|
|
|
1365 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
|
1366
|
|
|
1367 } else {
|
|
|
1368 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
|
1369 }
|
|
|
1370
|
|
|
1371 atom = &trak->tkhd_atom_buf;
|
|
|
1372 atom->temporary = 1;
|
|
|
1373 atom->pos = atom_header;
|
|
|
1374 atom->last = atom_header + atom_size;
|
|
|
1375
|
|
|
1376 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
|
1377
|
|
|
1378 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1379
|
|
|
1380 return NGX_OK;
|
|
|
1381 }
|
|
|
1382
|
|
|
1383
|
|
|
1384 static ngx_int_t
|
|
|
1385 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1386 {
|
|
|
1387 u_char *atom_header;
|
|
|
1388 ngx_buf_t *atom;
|
|
|
1389 ngx_http_mp4_trak_t *trak;
|
|
|
1390
|
|
|
1391 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
|
1392
|
|
|
1393 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1394 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
|
1395
|
|
|
1396 trak = ngx_mp4_last_trak(mp4);
|
|
|
1397
|
|
|
1398 atom = &trak->mdia_atom_buf;
|
|
|
1399 atom->temporary = 1;
|
|
|
1400 atom->pos = atom_header;
|
|
|
1401 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1402
|
|
|
1403 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
|
1404
|
|
|
1405 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
|
1406 }
|
|
|
1407
|
|
|
1408
|
|
|
1409 static void
|
|
|
1410 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1411 ngx_http_mp4_trak_t *trak)
|
|
|
1412 {
|
|
|
1413 ngx_buf_t *atom;
|
|
|
1414
|
|
|
1415 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1416 atom = &trak->mdia_atom_buf;
|
|
|
1417 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1418 }
|
|
|
1419
|
|
|
1420
|
|
|
1421 typedef struct {
|
|
|
1422 u_char size[4];
|
|
|
1423 u_char name[4];
|
|
|
1424 u_char version[1];
|
|
|
1425 u_char flags[3];
|
|
|
1426 u_char creation_time[4];
|
|
|
1427 u_char modification_time[4];
|
|
|
1428 u_char timescale[4];
|
|
|
1429 u_char duration[4];
|
|
|
1430 u_char language[2];
|
|
|
1431 u_char quality[2];
|
|
|
1432 } ngx_mp4_mdhd_atom_t;
|
|
|
1433
|
|
|
1434 typedef struct {
|
|
|
1435 u_char size[4];
|
|
|
1436 u_char name[4];
|
|
|
1437 u_char version[1];
|
|
|
1438 u_char flags[3];
|
|
|
1439 u_char creation_time[8];
|
|
|
1440 u_char modification_time[8];
|
|
|
1441 u_char timescale[4];
|
|
|
1442 u_char duration[8];
|
|
|
1443 u_char language[2];
|
|
|
1444 u_char quality[2];
|
|
|
1445 } ngx_mp4_mdhd64_atom_t;
|
|
|
1446
|
|
|
1447
|
|
|
1448 static ngx_int_t
|
|
|
1449 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1450 {
|
|
|
1451 u_char *atom_header;
|
|
|
1452 size_t atom_size;
|
|
|
1453 uint32_t timescale;
|
|
|
1454 uint64_t duration;
|
|
|
1455 ngx_buf_t *atom;
|
|
|
1456 ngx_http_mp4_trak_t *trak;
|
|
|
1457 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
|
1458 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
|
1459
|
|
|
1460 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
|
1461
|
|
|
1462 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1463 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
|
1464 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
|
1465 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
|
1466
|
|
|
1467 if (mdhd_atom->version[0] == 0) {
|
|
|
1468 /* version 0: everything is 32-bit */
|
|
|
1469 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
|
1470 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
|
1471
|
|
|
1472 } else {
|
|
|
1473 /* version 1: 64-bit duration and 32-bit timescale */
|
|
|
1474 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
|
1475 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1479 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1480 timescale, duration, (double) duration / timescale);
|
|
|
1481
|
|
|
1482 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1483
|
|
|
1484 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1485 "mdhd new duration:%uL, time:%.3fs",
|
|
|
1486 duration, (double) duration / timescale);
|
|
|
1487
|
|
|
1488 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1489
|
|
|
1490 trak = ngx_mp4_last_trak(mp4);
|
|
|
1491 trak->mdhd_size = atom_size;
|
|
|
1492 trak->timescale = timescale;
|
|
|
1493
|
|
|
1494 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
|
1495
|
|
|
1496 if (mdhd_atom->version[0] == 0) {
|
|
|
1497 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
|
1498
|
|
|
1499 } else {
|
|
|
1500 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
|
1501 }
|
|
|
1502
|
|
|
1503 atom = &trak->mdhd_atom_buf;
|
|
|
1504 atom->temporary = 1;
|
|
|
1505 atom->pos = atom_header;
|
|
|
1506 atom->last = atom_header + atom_size;
|
|
|
1507
|
|
|
1508 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
|
1509
|
|
|
1510 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1511
|
|
|
1512 return NGX_OK;
|
|
|
1513 }
|
|
|
1514
|
|
|
1515
|
|
|
1516 static ngx_int_t
|
|
|
1517 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1518 {
|
|
|
1519 u_char *atom_header;
|
|
|
1520 size_t atom_size;
|
|
|
1521 ngx_buf_t *atom;
|
|
|
1522 ngx_http_mp4_trak_t *trak;
|
|
|
1523
|
|
|
1524 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
|
1525
|
|
|
1526 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1527 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1528 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1529 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
|
1530
|
|
|
1531 trak = ngx_mp4_last_trak(mp4);
|
|
|
1532
|
|
|
1533 atom = &trak->hdlr_atom_buf;
|
|
|
1534 atom->temporary = 1;
|
|
|
1535 atom->pos = atom_header;
|
|
|
1536 atom->last = atom_header + atom_size;
|
|
|
1537
|
|
|
1538 trak->hdlr_size = atom_size;
|
|
|
1539 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
|
1540
|
|
|
1541 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1542
|
|
|
1543 return NGX_OK;
|
|
|
1544 }
|
|
|
1545
|
|
|
1546
|
|
|
1547 static ngx_int_t
|
|
|
1548 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1549 {
|
|
|
1550 u_char *atom_header;
|
|
|
1551 ngx_buf_t *atom;
|
|
|
1552 ngx_http_mp4_trak_t *trak;
|
|
|
1553
|
|
|
1554 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
|
1555
|
|
|
1556 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1557 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
|
1558
|
|
|
1559 trak = ngx_mp4_last_trak(mp4);
|
|
|
1560
|
|
|
1561 atom = &trak->minf_atom_buf;
|
|
|
1562 atom->temporary = 1;
|
|
|
1563 atom->pos = atom_header;
|
|
|
1564 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1565
|
|
|
1566 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
|
1567
|
|
|
1568 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
|
1569 }
|
|
|
1570
|
|
|
1571
|
|
|
1572 static void
|
|
|
1573 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1574 ngx_http_mp4_trak_t *trak)
|
|
|
1575 {
|
|
|
1576 ngx_buf_t *atom;
|
|
|
1577
|
|
|
1578 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
|
1579 + trak->vmhd_size
|
|
|
1580 + trak->smhd_size
|
|
|
1581 + trak->dinf_size;
|
|
|
1582 atom = &trak->minf_atom_buf;
|
|
|
1583 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1584 }
|
|
|
1585
|
|
|
1586
|
|
|
1587 static ngx_int_t
|
|
|
1588 ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1589 {
|
|
|
1590 u_char *atom_header;
|
|
|
1591 size_t atom_size;
|
|
|
1592 ngx_buf_t *atom;
|
|
|
1593 ngx_http_mp4_trak_t *trak;
|
|
|
1594
|
|
|
1595 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom");
|
|
|
1596
|
|
|
1597 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1598 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1599 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1600 ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd');
|
|
|
1601
|
|
|
1602 trak = ngx_mp4_last_trak(mp4);
|
|
|
1603
|
|
|
1604 atom = &trak->vmhd_atom_buf;
|
|
|
1605 atom->temporary = 1;
|
|
|
1606 atom->pos = atom_header;
|
|
|
1607 atom->last = atom_header + atom_size;
|
|
|
1608
|
|
|
1609 trak->vmhd_size += atom_size;
|
|
|
1610 trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom;
|
|
|
1611
|
|
|
1612 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1613
|
|
|
1614 return NGX_OK;
|
|
|
1615 }
|
|
|
1616
|
|
|
1617
|
|
|
1618 static ngx_int_t
|
|
|
1619 ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1620 {
|
|
|
1621 u_char *atom_header;
|
|
|
1622 size_t atom_size;
|
|
|
1623 ngx_buf_t *atom;
|
|
|
1624 ngx_http_mp4_trak_t *trak;
|
|
|
1625
|
|
|
1626 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
|
1627
|
|
|
1628 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1629 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1630 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1631 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
|
1632
|
|
|
1633 trak = ngx_mp4_last_trak(mp4);
|
|
|
1634
|
|
|
1635 atom = &trak->smhd_atom_buf;
|
|
|
1636 atom->temporary = 1;
|
|
|
1637 atom->pos = atom_header;
|
|
|
1638 atom->last = atom_header + atom_size;
|
|
|
1639
|
|
|
1640 trak->vmhd_size += atom_size;
|
|
|
1641 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
|
1642
|
|
|
1643 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1644
|
|
|
1645 return NGX_OK;
|
|
|
1646 }
|
|
|
1647
|
|
|
1648
|
|
|
1649 static ngx_int_t
|
|
|
1650 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1651 {
|
|
|
1652 u_char *atom_header;
|
|
|
1653 size_t atom_size;
|
|
|
1654 ngx_buf_t *atom;
|
|
|
1655 ngx_http_mp4_trak_t *trak;
|
|
|
1656
|
|
|
1657 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
|
1658
|
|
|
1659 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1660 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1661 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1662 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
|
1663
|
|
|
1664 trak = ngx_mp4_last_trak(mp4);
|
|
|
1665
|
|
|
1666 atom = &trak->dinf_atom_buf;
|
|
|
1667 atom->temporary = 1;
|
|
|
1668 atom->pos = atom_header;
|
|
|
1669 atom->last = atom_header + atom_size;
|
|
|
1670
|
|
|
1671 trak->dinf_size += atom_size;
|
|
|
1672 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
|
1673
|
|
|
1674 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1675
|
|
|
1676 return NGX_OK;
|
|
|
1677 }
|
|
|
1678
|
|
|
1679
|
|
|
1680 static ngx_int_t
|
|
|
1681 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1682 {
|
|
|
1683 u_char *atom_header;
|
|
|
1684 ngx_buf_t *atom;
|
|
|
1685 ngx_http_mp4_trak_t *trak;
|
|
|
1686
|
|
|
1687 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
|
1688
|
|
|
1689 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1690 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
|
1691
|
|
|
1692 trak = ngx_mp4_last_trak(mp4);
|
|
|
1693
|
|
|
1694 atom = &trak->stbl_atom_buf;
|
|
|
1695 atom->temporary = 1;
|
|
|
1696 atom->pos = atom_header;
|
|
|
1697 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1698
|
|
|
1699 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
|
1700
|
|
|
1701 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
|
1702 }
|
|
|
1703
|
|
|
1704
|
|
|
1705 static void
|
|
|
1706 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1707 ngx_http_mp4_trak_t *trak)
|
|
|
1708 {
|
|
|
1709 ngx_buf_t *atom;
|
|
|
1710
|
|
|
1711 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1712 atom = &trak->stbl_atom_buf;
|
|
|
1713 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1714 }
|
|
|
1715
|
|
|
1716
|
|
|
1717 typedef struct {
|
|
|
1718 u_char size[4];
|
|
|
1719 u_char name[4];
|
|
|
1720 u_char version[1];
|
|
|
1721 u_char flags[3];
|
|
|
1722 u_char entries[4];
|
|
|
1723
|
|
|
1724 u_char media_size[4];
|
|
|
1725 u_char media_name[4];
|
|
|
1726 } ngx_mp4_stsd_atom_t;
|
|
|
1727
|
|
|
1728
|
|
|
1729 static ngx_int_t
|
|
|
1730 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1731 {
|
|
|
1732 u_char *atom_header, *atom_table;
|
|
|
1733 size_t atom_size;
|
|
|
1734 ngx_buf_t *atom;
|
|
|
1735 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
|
1736 ngx_http_mp4_trak_t *trak;
|
|
|
1737
|
|
|
1738 /* sample description atom */
|
|
|
1739
|
|
|
1740 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
|
1741
|
|
|
1742 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1743 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
|
1744 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1745 atom_table = atom_header + atom_size;
|
|
|
1746 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
|
1747 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
|
1748
|
|
|
1749 if ((uint64_t) (sizeof(ngx_mp4_stsd_atom_t) - sizeof(ngx_mp4_atom_header_t))
|
|
640
|
1750 > atom_data_size)
|
|
|
1751 {
|
|
638
|
1752 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1753 "\"%s\" mp4 stsd atom too large",
|
|
|
1754 mp4->file.name.data);
|
|
|
1755 return NGX_ERROR;
|
|
|
1756 }
|
|
|
1757
|
|
|
1758 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1759 "stsd entries:%uD, media:%*s",
|
|
|
1760 ngx_mp4_get_32value(stsd_atom->entries),
|
|
|
1761 4, stsd_atom->media_name);
|
|
|
1762
|
|
|
1763 /* supported media format: "avc1" (H.264) and "mp4a" (MPEG-4/AAC) */
|
|
|
1764
|
|
|
1765 if (ngx_strncmp(stsd_atom->media_name, "avc1", 4) != 0
|
|
|
1766 && ngx_strncmp(stsd_atom->media_name, "mp4a", 4) != 0)
|
|
|
1767 {
|
|
|
1768 return NGX_DECLINED;
|
|
|
1769 }
|
|
|
1770
|
|
|
1771 trak = ngx_mp4_last_trak(mp4);
|
|
|
1772
|
|
|
1773 atom = &trak->stsd_atom_buf;
|
|
|
1774 atom->temporary = 1;
|
|
|
1775 atom->pos = atom_header;
|
|
|
1776 atom->last = atom_table;
|
|
|
1777
|
|
|
1778 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
|
1779 trak->size += atom_size;
|
|
|
1780
|
|
|
1781 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1782
|
|
|
1783 return NGX_OK;
|
|
|
1784 }
|
|
|
1785
|
|
|
1786
|
|
|
1787 typedef struct {
|
|
|
1788 u_char size[4];
|
|
|
1789 u_char name[4];
|
|
|
1790 u_char version[1];
|
|
|
1791 u_char flags[3];
|
|
|
1792 u_char entries[4];
|
|
|
1793 } ngx_mp4_stts_atom_t;
|
|
|
1794
|
|
|
1795 typedef struct {
|
|
|
1796 u_char count[4];
|
|
|
1797 u_char duration[4];
|
|
|
1798 } ngx_mp4_stts_entry_t;
|
|
|
1799
|
|
|
1800
|
|
|
1801 static ngx_int_t
|
|
|
1802 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1803 {
|
|
|
1804 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1805 uint32_t entries;
|
|
|
1806 ngx_buf_t *atom, *data;
|
|
|
1807 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1808 ngx_http_mp4_trak_t *trak;
|
|
|
1809
|
|
|
1810 /* time-to-sample atom */
|
|
|
1811
|
|
|
1812 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
|
1813
|
|
|
1814 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1815 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
|
1816 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
|
1817
|
|
|
1818 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
|
1819
|
|
|
1820 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1821 "mp4 time-to-sample entries:%uD", entries);
|
|
|
1822
|
|
|
1823 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
|
1824 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
|
1825
|
|
|
1826 if ((uint64_t) (atom_end - stts_atom->version) > atom_data_size) {
|
|
|
1827 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1828 "\"%s\" mp4 stts atom too large",
|
|
|
1829 mp4->file.name.data);
|
|
|
1830 return NGX_ERROR;
|
|
|
1831 }
|
|
|
1832
|
|
|
1833 trak = ngx_mp4_last_trak(mp4);
|
|
|
1834 trak->time_to_sample_entries = entries;
|
|
|
1835
|
|
|
1836 atom = &trak->stts_atom_buf;
|
|
|
1837 atom->temporary = 1;
|
|
|
1838 atom->pos = atom_header;
|
|
|
1839 atom->last = atom_table;
|
|
|
1840
|
|
|
1841 data = &trak->stts_data_buf;
|
|
|
1842 data->temporary = 1;
|
|
|
1843 data->pos = atom_table;
|
|
|
1844 data->last = atom_end;
|
|
|
1845
|
|
|
1846 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
|
1847 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
|
1848
|
|
|
1849 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1850
|
|
|
1851 return NGX_OK;
|
|
|
1852 }
|
|
|
1853
|
|
|
1854
|
|
|
1855 static ngx_int_t
|
|
|
1856 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1857 ngx_http_mp4_trak_t *trak)
|
|
|
1858 {
|
|
|
1859 size_t atom_size;
|
|
|
1860 uint32_t entries, count, duration;
|
|
|
1861 uint64_t start_time;
|
|
|
1862 ngx_buf_t *atom, *data;
|
|
|
1863 ngx_uint_t start_sample;
|
|
|
1864 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1865 ngx_mp4_stts_entry_t *entry, *end;
|
|
|
1866
|
|
|
1867 /*
|
|
|
1868 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
|
1869 * from mdia.mdhd atom which may reside after mdia.minf
|
|
|
1870 */
|
|
|
1871
|
|
|
1872 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1873 "mp4 stts atom update");
|
|
|
1874
|
|
|
1875 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
|
1876
|
|
|
1877 if (data == NULL) {
|
|
|
1878 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1879 "no mp4 stts atoms were found in \"%s\"",
|
|
|
1880 mp4->file.name.data);
|
|
|
1881 return NGX_ERROR;
|
|
|
1882 }
|
|
|
1883
|
|
|
1884 entries = trak->time_to_sample_entries;
|
|
644
|
1885 start_time = (uint64_t) mp4->start * trak->timescale / 1000;
|
|
638
|
1886
|
|
|
1887 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1888 "time-to-sample start_time:%uL", start_time);
|
|
|
1889
|
|
|
1890 start_sample = 0;
|
|
|
1891 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
|
1892 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
|
1893
|
|
|
1894 while (entry < end) {
|
|
|
1895 count = ngx_mp4_get_32value(entry->count);
|
|
|
1896 duration = ngx_mp4_get_32value(entry->duration);
|
|
|
1897
|
|
|
1898 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1899 "count:%uD, duration:%uD", count, duration);
|
|
|
1900
|
|
|
1901 if (start_time < count * duration) {
|
|
|
1902 start_sample += (ngx_uint_t) (start_time / duration);
|
|
|
1903 count -= start_sample;
|
|
|
1904 ngx_mp4_set_32value(entry->count, count);
|
|
|
1905 goto found;
|
|
|
1906 }
|
|
|
1907
|
|
|
1908 start_sample += count;
|
|
|
1909 start_time -= count * duration;
|
|
|
1910 entries--;
|
|
|
1911 entry++;
|
|
|
1912 }
|
|
|
1913
|
|
|
1914 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1915 "start time is out mp4 stts samples in \"%s\"",
|
|
|
1916 mp4->file.name.data);
|
|
|
1917
|
|
|
1918 return NGX_ERROR;
|
|
|
1919
|
|
|
1920 found:
|
|
|
1921
|
|
|
1922 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1923 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
|
1924
|
|
|
1925 trak->start_sample = start_sample;
|
|
|
1926
|
|
|
1927 data->pos = (u_char *) entry;
|
|
|
1928 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
|
1929 trak->size += atom_size;
|
|
|
1930
|
|
|
1931 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
|
1932 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
|
1933 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
|
1934 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
|
1935
|
|
|
1936 return NGX_OK;
|
|
|
1937 }
|
|
|
1938
|
|
|
1939
|
|
|
1940 typedef struct {
|
|
|
1941 u_char size[4];
|
|
|
1942 u_char name[4];
|
|
|
1943 u_char version[1];
|
|
|
1944 u_char flags[3];
|
|
|
1945 u_char entries[4];
|
|
|
1946 } ngx_http_mp4_stss_atom_t;
|
|
|
1947
|
|
|
1948
|
|
|
1949 static ngx_int_t
|
|
|
1950 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1951 {
|
|
|
1952 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1953 uint32_t entries;
|
|
|
1954 ngx_buf_t *atom, *data;
|
|
|
1955 ngx_http_mp4_trak_t *trak;
|
|
|
1956 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
1957
|
|
|
1958 /* sync samples atom */
|
|
|
1959
|
|
|
1960 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
|
1961
|
|
|
1962 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1963 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
|
1964 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
|
1965
|
|
|
1966 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
|
1967
|
|
|
1968 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1969 "sync sample entries:%uD", entries);
|
|
|
1970
|
|
|
1971 trak = ngx_mp4_last_trak(mp4);
|
|
|
1972 trak->sync_samples_entries = entries;
|
|
|
1973
|
|
|
1974 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
|
1975
|
|
|
1976 atom = &trak->stss_atom_buf;
|
|
|
1977 atom->temporary = 1;
|
|
|
1978 atom->pos = atom_header;
|
|
|
1979 atom->last = atom_table;
|
|
|
1980
|
|
|
1981 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
1982
|
|
|
1983 if ((uint64_t) (atom_end - stss_atom->version) > atom_data_size) {
|
|
|
1984 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1985 "\"%s\" mp4 stss atom too large", mp4->file.name.data);
|
|
|
1986 return NGX_ERROR;
|
|
|
1987 }
|
|
|
1988
|
|
|
1989 data = &trak->stss_data_buf;
|
|
|
1990 data->temporary = 1;
|
|
|
1991 data->pos = atom_table;
|
|
|
1992 data->last = atom_end;
|
|
|
1993
|
|
|
1994 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
|
1995 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
|
1996
|
|
|
1997 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1998
|
|
|
1999 return NGX_OK;
|
|
|
2000 }
|
|
|
2001
|
|
|
2002
|
|
|
2003 static ngx_int_t
|
|
|
2004 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2005 ngx_http_mp4_trak_t *trak)
|
|
|
2006 {
|
|
|
2007 size_t atom_size;
|
|
|
2008 uint32_t entries, sample, start_sample, *entry, *end;
|
|
|
2009 ngx_buf_t *atom, *data;
|
|
|
2010 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2011
|
|
|
2012 /*
|
|
|
2013 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
|
2014 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2015 * atom which may reside after mdia.minf
|
|
|
2016 */
|
|
|
2017
|
|
|
2018 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2019 "mp4 stss atom update");
|
|
|
2020
|
|
|
2021 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
|
2022
|
|
|
2023 if (data == NULL) {
|
|
|
2024 return NGX_OK;
|
|
|
2025 }
|
|
|
2026
|
|
|
2027 /* sync samples starts from 1 */
|
|
|
2028 start_sample = trak->start_sample + 1;
|
|
|
2029 entries = trak->sync_samples_entries;
|
|
|
2030
|
|
|
2031 entry = (uint32_t *) data->pos;
|
|
|
2032 end = (uint32_t *) data->last;
|
|
|
2033
|
|
|
2034 while (entry < end) {
|
|
|
2035 sample = ngx_mp4_get_32value(entry);
|
|
|
2036
|
|
|
2037 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2038 "start:%uD, sync:%uD", start_sample, sample);
|
|
|
2039
|
|
|
2040 if (sample >= start_sample) {
|
|
|
2041 goto found;
|
|
|
2042 }
|
|
|
2043
|
|
|
2044 entries--;
|
|
|
2045 entry++;
|
|
|
2046 }
|
|
|
2047
|
|
|
2048 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2049 "start sample is out of mp4 stss atom in \"%s\"",
|
|
|
2050 mp4->file.name.data);
|
|
|
2051
|
|
|
2052 return NGX_ERROR;
|
|
|
2053
|
|
|
2054 found:
|
|
|
2055
|
|
|
2056 data->pos = (u_char *) entry;
|
|
|
2057
|
|
|
2058 start_sample = trak->start_sample;
|
|
|
2059
|
|
|
2060 while (entry < end) {
|
|
|
2061 sample = ngx_mp4_get_32value(entry);
|
|
|
2062 sample -= start_sample;
|
|
|
2063 ngx_mp4_set_32value(entry, sample);
|
|
|
2064 entry++;
|
|
|
2065 }
|
|
|
2066
|
|
|
2067 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
|
2068 trak->size += atom_size;
|
|
|
2069
|
|
|
2070 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
|
2071 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
|
2072
|
|
|
2073 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
|
2074 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
|
2075
|
|
|
2076 return NGX_OK;
|
|
|
2077 }
|
|
|
2078
|
|
|
2079
|
|
|
2080 typedef struct {
|
|
|
2081 u_char size[4];
|
|
|
2082 u_char name[4];
|
|
|
2083 u_char version[1];
|
|
|
2084 u_char flags[3];
|
|
|
2085 u_char entries[4];
|
|
|
2086 } ngx_mp4_ctts_atom_t;
|
|
|
2087
|
|
|
2088 typedef struct {
|
|
|
2089 u_char count[4];
|
|
|
2090 u_char offset[4];
|
|
|
2091 } ngx_mp4_ctts_entry_t;
|
|
|
2092
|
|
|
2093
|
|
|
2094 static ngx_int_t
|
|
|
2095 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2096 {
|
|
|
2097 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2098 uint32_t entries;
|
|
|
2099 ngx_buf_t *atom, *data;
|
|
|
2100 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2101 ngx_http_mp4_trak_t *trak;
|
|
|
2102
|
|
|
2103 /* composition offsets atom */
|
|
|
2104
|
|
|
2105 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
|
2106
|
|
|
2107 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2108 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
|
2109 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
|
2110
|
|
|
2111 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
|
2112
|
|
|
2113 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2114 "composition offset entries:%uD", entries);
|
|
|
2115
|
|
|
2116 trak = ngx_mp4_last_trak(mp4);
|
|
|
2117 trak->composition_offset_entries = entries;
|
|
|
2118
|
|
|
2119 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
|
2120
|
|
|
2121 atom = &trak->ctts_atom_buf;
|
|
|
2122 atom->temporary = 1;
|
|
|
2123 atom->pos = atom_header;
|
|
|
2124 atom->last = atom_table;
|
|
|
2125
|
|
|
2126 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
|
2127
|
|
|
2128 if ((uint64_t) (atom_end - ctts_atom->version) > atom_data_size) {
|
|
|
2129 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2130 "\"%s\" mp4 ctts atom too large", mp4->file.name.data);
|
|
|
2131 return NGX_ERROR;
|
|
|
2132 }
|
|
|
2133
|
|
|
2134 data = &trak->ctts_data_buf;
|
|
|
2135 data->temporary = 1;
|
|
|
2136 data->pos = atom_table;
|
|
|
2137 data->last = atom_end;
|
|
|
2138
|
|
|
2139 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
|
2140 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
|
2141
|
|
|
2142 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2143
|
|
|
2144 return NGX_OK;
|
|
|
2145 }
|
|
|
2146
|
|
|
2147
|
|
|
2148 static void
|
|
|
2149 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2150 ngx_http_mp4_trak_t *trak)
|
|
|
2151 {
|
|
|
2152 size_t atom_size;
|
|
|
2153 uint32_t entries, count, start_sample;
|
|
|
2154 ngx_buf_t *atom, *data;
|
|
|
2155 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2156 ngx_mp4_ctts_entry_t *entry, *end;
|
|
|
2157
|
|
|
2158 /*
|
|
|
2159 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
|
2160 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2161 * atom which may reside after mdia.minf
|
|
|
2162 */
|
|
|
2163
|
|
|
2164 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2165 "mp4 ctts atom update");
|
|
|
2166
|
|
|
2167 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
|
2168
|
|
|
2169 if (data == NULL) {
|
|
|
2170 return;
|
|
|
2171 }
|
|
|
2172
|
|
|
2173 /* sync samples starts from 1 */
|
|
|
2174 start_sample = trak->start_sample + 1;
|
|
|
2175 entries = trak->composition_offset_entries;
|
|
|
2176 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
|
2177 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
|
2178
|
|
|
2179 while (entry < end) {
|
|
|
2180 count = ngx_mp4_get_32value(entry->count);
|
|
|
2181
|
|
|
2182 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2183 "start:%uD, count:%uD, offset:%uD",
|
|
|
2184 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
|
2185
|
|
|
2186 if (start_sample <= count) {
|
|
|
2187 count -= (start_sample - 1);
|
|
|
2188 ngx_mp4_set_32value(entry->count, count);
|
|
|
2189 goto found;
|
|
|
2190 }
|
|
|
2191
|
|
|
2192 start_sample -= count;
|
|
|
2193 entries--;
|
|
|
2194 entry++;
|
|
|
2195 }
|
|
|
2196
|
|
|
2197 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
|
2198 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
|
2199
|
|
|
2200 return;
|
|
|
2201
|
|
|
2202 found:
|
|
|
2203
|
|
|
2204 data->pos = (u_char *) entry;
|
|
|
2205 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
|
2206 trak->size += atom_size;
|
|
|
2207
|
|
|
2208 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
|
2209 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
|
2210
|
|
|
2211 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
|
2212 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
|
2213
|
|
|
2214 return;
|
|
|
2215 }
|
|
|
2216
|
|
|
2217
|
|
|
2218 typedef struct {
|
|
|
2219 u_char size[4];
|
|
|
2220 u_char name[4];
|
|
|
2221 u_char version[1];
|
|
|
2222 u_char flags[3];
|
|
|
2223 u_char entries[4];
|
|
|
2224 } ngx_mp4_stsc_atom_t;
|
|
|
2225
|
|
|
2226
|
|
|
2227 static ngx_int_t
|
|
|
2228 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2229 {
|
|
|
2230 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2231 uint32_t entries;
|
|
|
2232 ngx_buf_t *atom, *data;
|
|
|
2233 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2234 ngx_http_mp4_trak_t *trak;
|
|
|
2235
|
|
|
2236 /* sample-to-chunk atom */
|
|
|
2237
|
|
|
2238 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
|
2239
|
|
|
2240 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2241 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
|
2242 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
|
2243
|
|
|
2244 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
|
2245
|
|
|
2246 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2247 "sample-to-chunk entries:%uD", entries);
|
|
|
2248
|
|
|
2249 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
|
2250 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2251
|
|
|
2252 if ((uint64_t) (atom_end - stsc_atom->version) > atom_data_size) {
|
|
|
2253 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2254 "\"%s\" mp4 stsc atom too large",
|
|
|
2255 mp4->file.name.data);
|
|
|
2256 return NGX_ERROR;
|
|
|
2257 }
|
|
|
2258
|
|
|
2259 trak = ngx_mp4_last_trak(mp4);
|
|
|
2260 trak->sample_to_chunk_entries = entries;
|
|
|
2261
|
|
|
2262 atom = &trak->stsc_atom_buf;
|
|
|
2263 atom->temporary = 1;
|
|
|
2264 atom->pos = atom_header;
|
|
|
2265 atom->last = atom_table;
|
|
|
2266
|
|
|
2267 data = &trak->stsc_data_buf;
|
|
|
2268 data->temporary = 1;
|
|
|
2269 data->pos = atom_table;
|
|
|
2270 data->last = atom_end;
|
|
|
2271
|
|
|
2272 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
|
2273 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
|
2274
|
|
|
2275 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2276
|
|
|
2277 return NGX_OK;
|
|
|
2278 }
|
|
|
2279
|
|
|
2280
|
|
|
2281 static ngx_int_t
|
|
|
2282 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2283 ngx_http_mp4_trak_t *trak)
|
|
|
2284 {
|
|
|
2285 size_t atom_size;
|
|
|
2286 uint32_t start_sample, entries, chunk, samples, id,
|
|
|
2287 next_chunk, n;
|
|
|
2288 ngx_buf_t *atom, *data, *buf;
|
|
|
2289 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2290 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
|
2291
|
|
|
2292 /*
|
|
|
2293 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
|
2294 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2295 * atom which may reside after mdia.minf
|
|
|
2296 */
|
|
|
2297
|
|
|
2298 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2299 "mp4 stsc atom update");
|
|
|
2300
|
|
|
2301 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
|
2302
|
|
|
2303 if (data == NULL) {
|
|
|
2304 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2305 "no mp4 stsc atoms were found in \"%s\"",
|
|
|
2306 mp4->file.name.data);
|
|
|
2307 return NGX_ERROR;
|
|
|
2308 }
|
|
|
2309
|
|
|
2310 start_sample = (uint32_t) trak->start_sample;
|
|
|
2311 entries = trak->sample_to_chunk_entries - 1;
|
|
|
2312
|
|
|
2313 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
|
2314 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
|
2315
|
|
|
2316 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2317 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2318 id = ngx_mp4_get_32value(entry->id);
|
|
|
2319 entry++;
|
|
|
2320
|
|
|
2321 while (entry < end) {
|
|
|
2322
|
|
|
2323 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2324
|
|
|
2325 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2326 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
|
2327 "samples:%uD, id:%uD",
|
|
|
2328 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
|
2329
|
|
|
2330 n = (next_chunk - chunk) * samples;
|
|
|
2331
|
|
|
2332 if (start_sample <= n) {
|
|
|
2333 goto found;
|
|
|
2334 }
|
|
|
2335
|
|
|
2336 start_sample -= n;
|
|
|
2337
|
|
|
2338 chunk = next_chunk;
|
|
|
2339 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2340 id = ngx_mp4_get_32value(entry->id);
|
|
|
2341 entries--;
|
|
|
2342 entry++;
|
|
|
2343 }
|
|
|
2344
|
|
|
2345 next_chunk = trak->chunks;
|
|
|
2346
|
|
|
2347 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2348 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
|
2349 start_sample, chunk, next_chunk - chunk, samples);
|
|
|
2350
|
|
|
2351 n = (next_chunk - chunk) * samples;
|
|
|
2352
|
|
|
2353 if (start_sample > n) {
|
|
|
2354 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2355 "start time is out mp4 stsc chunks in \"%s\"",
|
|
|
2356 mp4->file.name.data);
|
|
|
2357 return NGX_ERROR;
|
|
|
2358 }
|
|
|
2359
|
|
|
2360 found:
|
|
|
2361
|
|
|
2362 entries++;
|
|
|
2363 entry--;
|
|
|
2364
|
|
|
2365 if (samples == 0) {
|
|
|
2366 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2367 "zero number of samples in \"%s\"",
|
|
|
2368 mp4->file.name.data);
|
|
|
2369 return NGX_ERROR;
|
|
|
2370 }
|
|
|
2371
|
|
|
2372 trak->start_chunk = chunk - 1;
|
|
|
2373
|
|
|
2374 trak->start_chunk += start_sample / samples;
|
|
|
2375 trak->chunk_samples = start_sample % samples;
|
|
|
2376
|
|
|
2377 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2378 "start chunk:%ui, samples:%uD",
|
|
|
2379 trak->start_chunk, trak->chunk_samples);
|
|
|
2380
|
|
|
2381 data->pos = (u_char *) entry;
|
|
|
2382 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
|
2383
|
|
|
2384 if (trak->chunk_samples) {
|
|
|
2385
|
|
|
2386 first = &trak->stsc_chunk_entry;
|
|
|
2387 ngx_mp4_set_32value(first->chunk, 1);
|
|
|
2388 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
|
2389 ngx_mp4_set_32value(first->id, id);
|
|
|
2390
|
|
|
2391 buf = &trak->stsc_chunk_buf;
|
|
|
2392 buf->temporary = 1;
|
|
|
2393 buf->pos = (u_char *) first;
|
|
|
2394 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2395
|
|
|
2396 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
|
2397
|
|
|
2398 ngx_mp4_set_32value(entry->chunk, 2);
|
|
|
2399
|
|
|
2400 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2401 }
|
|
|
2402
|
|
|
2403 while (++entry < end) {
|
|
|
2404 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2405 chunk -= trak->start_chunk;
|
|
|
2406 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
|
2407 }
|
|
|
2408
|
|
|
2409 trak->size += atom_size;
|
|
|
2410
|
|
|
2411 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
|
2412 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
|
2413
|
|
|
2414 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
|
2415 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
|
2416
|
|
|
2417 return NGX_OK;
|
|
|
2418 }
|
|
|
2419
|
|
|
2420
|
|
|
2421 typedef struct {
|
|
|
2422 u_char size[4];
|
|
|
2423 u_char name[4];
|
|
|
2424 u_char version[1];
|
|
|
2425 u_char flags[3];
|
|
|
2426 u_char uniform_size[4];
|
|
|
2427 u_char entries[4];
|
|
|
2428 } ngx_mp4_stsz_atom_t;
|
|
|
2429
|
|
|
2430
|
|
|
2431 static ngx_int_t
|
|
|
2432 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2433 {
|
|
|
2434 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2435 size_t atom_size;
|
|
|
2436 uint32_t entries, size;
|
|
|
2437 ngx_buf_t *atom, *data;
|
|
|
2438 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2439 ngx_http_mp4_trak_t *trak;
|
|
|
2440
|
|
|
2441 /* sample sizes atom */
|
|
|
2442
|
|
|
2443 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
|
2444
|
|
|
2445 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2446 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
|
2447 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
|
2448
|
|
|
2449 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
|
2450 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
|
2451
|
|
|
2452 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2453 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
|
2454
|
|
|
2455 trak = ngx_mp4_last_trak(mp4);
|
|
|
2456 trak->sample_sizes_entries = entries;
|
|
|
2457
|
|
|
2458 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
|
2459
|
|
|
2460 atom = &trak->stsz_atom_buf;
|
|
|
2461 atom->temporary = 1;
|
|
|
2462 atom->pos = atom_header;
|
|
|
2463 atom->last = atom_table;
|
|
|
2464
|
|
|
2465 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
|
2466
|
|
|
2467 if (size == 0) {
|
|
|
2468 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2469
|
|
|
2470 if ((uint64_t) (atom_end - stsz_atom->version) > atom_data_size) {
|
|
|
2471 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2472 "\"%s\" mp4 stsz atom too large",
|
|
|
2473 mp4->file.name.data);
|
|
|
2474 return NGX_ERROR;
|
|
|
2475 }
|
|
|
2476
|
|
|
2477 data = &trak->stsz_data_buf;
|
|
|
2478 data->temporary = 1;
|
|
|
2479 data->pos = atom_table;
|
|
|
2480 data->last = atom_end;
|
|
|
2481
|
|
|
2482 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
|
2483
|
|
|
2484 } else {
|
|
|
2485 /* if size != 0 then all samples are the same size */
|
|
|
2486 /* TODO : chunk samples */
|
|
|
2487 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
2488 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
2489 trak->size += atom_size;
|
|
|
2490 }
|
|
|
2491
|
|
|
2492 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2493
|
|
|
2494 return NGX_OK;
|
|
|
2495 }
|
|
|
2496
|
|
|
2497
|
|
|
2498 static void
|
|
|
2499 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2500 ngx_http_mp4_trak_t *trak)
|
|
|
2501 {
|
|
|
2502 size_t atom_size;
|
|
|
2503 uint32_t *pos, *end;
|
|
|
2504 ngx_buf_t *atom, *data;
|
|
|
2505 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2506
|
|
|
2507 /*
|
|
|
2508 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
|
2509 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2510 * atom which may reside after mdia.minf
|
|
|
2511 */
|
|
|
2512
|
|
|
2513 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2514 "mp4 stsz atom update");
|
|
|
2515
|
|
|
2516 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
|
2517
|
|
|
2518 if (data) {
|
|
|
2519 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
|
2520 end = (uint32_t *) data->pos;
|
|
|
2521
|
|
|
2522 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
|
2523 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
|
2524 }
|
|
|
2525
|
|
|
2526 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
640
|
2527 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
|
638
|
2528
|
|
|
2529 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
|
2530 trak->size += atom_size;
|
|
|
2531
|
|
|
2532 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
|
2533 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
|
2534
|
|
|
2535 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
|
2536 ngx_mp4_set_32value(stsz_atom->entries,
|
|
|
2537 trak->sample_sizes_entries - trak->start_sample);
|
|
|
2538 }
|
|
|
2539 }
|
|
|
2540
|
|
|
2541
|
|
|
2542 typedef struct {
|
|
|
2543 u_char size[4];
|
|
|
2544 u_char name[4];
|
|
|
2545 u_char version[1];
|
|
|
2546 u_char flags[3];
|
|
|
2547 u_char entries[4];
|
|
|
2548 } ngx_mp4_stco_atom_t;
|
|
|
2549
|
|
|
2550
|
|
|
2551 static ngx_int_t
|
|
|
2552 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2553 {
|
|
|
2554 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2555 uint32_t entries;
|
|
|
2556 ngx_buf_t *atom, *data;
|
|
|
2557 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2558 ngx_http_mp4_trak_t *trak;
|
|
|
2559
|
|
|
2560 /* chunk offsets atom */
|
|
|
2561
|
|
|
2562 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
|
2563
|
|
|
2564 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2565 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
|
2566 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
|
2567
|
|
|
2568 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
|
2569
|
|
|
2570 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2571
|
|
|
2572 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
|
2573 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2574
|
|
|
2575 if ((uint64_t) (atom_end - stco_atom->version) > atom_data_size) {
|
|
|
2576 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2577 "\"%s\" mp4 stco atom too large", mp4->file.name.data);
|
|
|
2578 return NGX_ERROR;
|
|
|
2579 }
|
|
|
2580
|
|
|
2581 trak = ngx_mp4_last_trak(mp4);
|
|
|
2582 trak->chunks = entries;
|
|
|
2583
|
|
640
|
2584 atom = &trak->stco_atom_buf;
|
|
638
|
2585 atom->temporary = 1;
|
|
|
2586 atom->pos = atom_header;
|
|
|
2587 atom->last = atom_table;
|
|
|
2588
|
|
640
|
2589 data = &trak->stco_data_buf;
|
|
638
|
2590 data->temporary = 1;
|
|
|
2591 data->pos = atom_table;
|
|
|
2592 data->last = atom_end;
|
|
|
2593
|
|
|
2594 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
|
2595 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
|
2596
|
|
|
2597 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2598
|
|
|
2599 return NGX_OK;
|
|
|
2600 }
|
|
|
2601
|
|
|
2602
|
|
|
2603 static ngx_int_t
|
|
|
2604 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2605 ngx_http_mp4_trak_t *trak)
|
|
|
2606 {
|
|
|
2607 size_t atom_size;
|
|
|
2608 ngx_buf_t *atom, *data;
|
|
|
2609 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2610
|
|
|
2611 /*
|
|
|
2612 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
|
2613 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2614 * atom which may reside after mdia.minf
|
|
|
2615 */
|
|
|
2616
|
|
|
2617 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2618 "mp4 stco atom update");
|
|
|
2619
|
|
|
2620 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2621
|
|
|
2622 if (data == NULL) {
|
|
|
2623 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2624 "no mp4 stco atoms were found in \"%s\"",
|
|
|
2625 mp4->file.name.data);
|
|
|
2626 return NGX_ERROR;
|
|
|
2627 }
|
|
|
2628
|
|
|
2629 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
|
2630 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
|
2631 trak->size += atom_size;
|
|
|
2632
|
|
|
2633 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
|
2634 trak->start_offset += trak->chunk_samples_size;
|
|
|
2635 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
|
2636
|
|
|
2637 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2638 "start chunk offset:%uD", trak->start_offset);
|
|
|
2639
|
|
|
2640 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
|
2641 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
|
2642
|
|
|
2643 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
|
2644 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2645
|
|
|
2646 return NGX_OK;
|
|
|
2647 }
|
|
|
2648
|
|
|
2649
|
|
|
2650 static void
|
|
|
2651 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2652 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
|
2653 {
|
|
|
2654 uint32_t offset, *entry, *end;
|
|
|
2655 ngx_buf_t *data;
|
|
|
2656
|
|
|
2657 /*
|
|
|
2658 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
|
2659 * minimal start offset of all traks and new moov atom size
|
|
|
2660 */
|
|
|
2661
|
|
|
2662 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2663 "mp4 stco atom adjustment");
|
|
|
2664
|
|
|
2665 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2666 entry = (uint32_t *) data->pos;
|
|
|
2667 end = (uint32_t *) data->last;
|
|
|
2668
|
|
|
2669 while (entry < end) {
|
|
|
2670 offset = ngx_mp4_get_32value(entry);
|
|
|
2671 offset += adjustment;
|
|
|
2672 ngx_mp4_set_32value(entry, offset);
|
|
|
2673 entry++;
|
|
|
2674 }
|
|
|
2675 }
|
|
|
2676
|
|
|
2677
|
|
640
|
2678 typedef struct {
|
|
|
2679 u_char size[4];
|
|
|
2680 u_char name[4];
|
|
|
2681 u_char version[1];
|
|
|
2682 u_char flags[3];
|
|
|
2683 u_char entries[4];
|
|
|
2684 } ngx_mp4_co64_atom_t;
|
|
|
2685
|
|
|
2686
|
|
|
2687 static ngx_int_t
|
|
|
2688 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2689 {
|
|
|
2690 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2691 uint32_t entries;
|
|
|
2692 ngx_buf_t *atom, *data;
|
|
|
2693 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2694 ngx_http_mp4_trak_t *trak;
|
|
|
2695
|
|
|
2696 /* chunk offsets atom */
|
|
|
2697
|
|
|
2698 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
|
|
|
2699
|
|
|
2700 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2701 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
|
|
|
2702 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
|
|
|
2703
|
|
|
2704 entries = ngx_mp4_get_32value(co64_atom->entries);
|
|
|
2705
|
|
|
2706 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2707
|
|
|
2708 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
|
|
|
2709 atom_end = atom_table + entries * sizeof(uint64_t);
|
|
|
2710
|
|
|
2711 if ((uint64_t) (atom_end - co64_atom->version) > atom_data_size) {
|
|
|
2712 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2713 "\"%s\" mp4 co64 atom too large", mp4->file.name.data);
|
|
|
2714 return NGX_ERROR;
|
|
|
2715 }
|
|
|
2716
|
|
|
2717 trak = ngx_mp4_last_trak(mp4);
|
|
|
2718 trak->chunks = entries;
|
|
|
2719
|
|
|
2720 atom = &trak->co64_atom_buf;
|
|
|
2721 atom->temporary = 1;
|
|
|
2722 atom->pos = atom_header;
|
|
|
2723 atom->last = atom_table;
|
|
|
2724
|
|
|
2725 data = &trak->co64_data_buf;
|
|
|
2726 data->temporary = 1;
|
|
|
2727 data->pos = atom_table;
|
|
|
2728 data->last = atom_end;
|
|
|
2729
|
|
|
2730 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
|
|
|
2731 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
|
|
|
2732
|
|
|
2733 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2734
|
|
|
2735 return NGX_OK;
|
|
|
2736 }
|
|
|
2737
|
|
|
2738
|
|
|
2739 static ngx_int_t
|
|
|
2740 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2741 ngx_http_mp4_trak_t *trak)
|
|
|
2742 {
|
|
|
2743 size_t atom_size;
|
|
|
2744 ngx_buf_t *atom, *data;
|
|
|
2745 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2746
|
|
|
2747 /*
|
|
|
2748 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
|
2749 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2750 * atom which may reside after mdia.minf
|
|
|
2751 */
|
|
|
2752
|
|
|
2753 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2754 "mp4 co64 atom update");
|
|
|
2755
|
|
|
2756 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2757
|
|
|
2758 if (data == NULL) {
|
|
|
2759 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2760 "no mp4 co64 atoms were found in \"%s\"",
|
|
|
2761 mp4->file.name.data);
|
|
|
2762 return NGX_ERROR;
|
|
|
2763 }
|
|
|
2764
|
|
|
2765 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
|
2766 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
|
2767 trak->size += atom_size;
|
|
|
2768
|
|
|
2769 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
|
2770 trak->start_offset += trak->chunk_samples_size;
|
|
|
2771 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
|
2772
|
|
|
2773 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2774 "start chunk offset:%uL", trak->start_offset);
|
|
|
2775
|
|
|
2776 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
|
2777 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
|
2778
|
|
|
2779 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
|
2780 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2781
|
|
|
2782 return NGX_OK;
|
|
|
2783 }
|
|
|
2784
|
|
|
2785
|
|
|
2786 static void
|
|
|
2787 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2788 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
|
2789 {
|
|
|
2790 uint64_t offset, *entry, *end;
|
|
|
2791 ngx_buf_t *data;
|
|
|
2792
|
|
|
2793 /*
|
|
|
2794 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
|
2795 * minimal start offset of all traks and new moov atom size
|
|
|
2796 */
|
|
|
2797
|
|
|
2798 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2799 "mp4 co64 atom adjustment");
|
|
|
2800
|
|
|
2801 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2802 entry = (uint64_t *) data->pos;
|
|
|
2803 end = (uint64_t *) data->last;
|
|
|
2804
|
|
|
2805 while (entry < end) {
|
|
|
2806 offset = ngx_mp4_get_64value(entry);
|
|
|
2807 offset += adjustment;
|
|
|
2808 ngx_mp4_set_64value(entry, offset);
|
|
|
2809 entry++;
|
|
|
2810 }
|
|
|
2811 }
|
|
|
2812
|
|
|
2813
|
|
638
|
2814 static char *
|
|
|
2815 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2816 {
|
|
|
2817 ngx_http_core_loc_conf_t *clcf;
|
|
|
2818
|
|
|
2819 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
2820 clcf->handler = ngx_http_mp4_handler;
|
|
|
2821
|
|
|
2822 return NGX_CONF_OK;
|
|
|
2823 }
|
|
|
2824
|
|
|
2825
|
|
|
2826 static void *
|
|
|
2827 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
|
2828 {
|
|
|
2829 ngx_http_mp4_conf_t *conf;
|
|
|
2830
|
|
|
2831 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
|
2832 if (conf == NULL) {
|
|
|
2833 return NULL;
|
|
|
2834 }
|
|
|
2835
|
|
|
2836 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2837 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2838
|
|
|
2839 return conf;
|
|
|
2840 }
|
|
|
2841
|
|
|
2842
|
|
|
2843 static char *
|
|
|
2844 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
2845 {
|
|
|
2846 ngx_http_mp4_conf_t *prev = parent;
|
|
|
2847 ngx_http_mp4_conf_t *conf = child;
|
|
|
2848
|
|
|
2849 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
|
2850 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
|
2851 10 * 1024 * 1024);
|
|
|
2852
|
|
|
2853 return NGX_CONF_OK;
|
|
|
2854 }
|
