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634
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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644
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4 * Copyright (C) Nginx, Inc.
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634
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5 */
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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12 #define NGX_HTTP_MP4_TRAK_ATOM 0
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13 #define NGX_HTTP_MP4_TKHD_ATOM 1
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14 #define NGX_HTTP_MP4_MDIA_ATOM 2
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15 #define NGX_HTTP_MP4_MDHD_ATOM 3
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16 #define NGX_HTTP_MP4_HDLR_ATOM 4
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17 #define NGX_HTTP_MP4_MINF_ATOM 5
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18 #define NGX_HTTP_MP4_VMHD_ATOM 6
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19 #define NGX_HTTP_MP4_SMHD_ATOM 7
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20 #define NGX_HTTP_MP4_DINF_ATOM 8
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21 #define NGX_HTTP_MP4_STBL_ATOM 9
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22 #define NGX_HTTP_MP4_STSD_ATOM 10
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23 #define NGX_HTTP_MP4_STTS_ATOM 11
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24 #define NGX_HTTP_MP4_STTS_DATA 12
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25 #define NGX_HTTP_MP4_STSS_ATOM 13
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26 #define NGX_HTTP_MP4_STSS_DATA 14
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27 #define NGX_HTTP_MP4_CTTS_ATOM 15
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28 #define NGX_HTTP_MP4_CTTS_DATA 16
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29 #define NGX_HTTP_MP4_STSC_ATOM 17
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30 #define NGX_HTTP_MP4_STSC_CHUNK 18
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31 #define NGX_HTTP_MP4_STSC_DATA 19
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32 #define NGX_HTTP_MP4_STSZ_ATOM 20
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33 #define NGX_HTTP_MP4_STSZ_DATA 21
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34 #define NGX_HTTP_MP4_STCO_ATOM 22
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35 #define NGX_HTTP_MP4_STCO_DATA 23
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36 #define NGX_HTTP_MP4_CO64_ATOM 24
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37 #define NGX_HTTP_MP4_CO64_DATA 25
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38
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39 #define NGX_HTTP_MP4_LAST_ATOM NGX_HTTP_MP4_CO64_DATA
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40
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41
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42 typedef struct {
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43 size_t buffer_size;
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44 size_t max_buffer_size;
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45 } ngx_http_mp4_conf_t;
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46
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47
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48 typedef struct {
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49 u_char chunk[4];
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50 u_char samples[4];
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51 u_char id[4];
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52 } ngx_mp4_stsc_entry_t;
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53
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54
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55 typedef struct {
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56 uint32_t timescale;
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57 uint32_t time_to_sample_entries;
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58 uint32_t sample_to_chunk_entries;
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59 uint32_t sync_samples_entries;
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60 uint32_t composition_offset_entries;
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61 uint32_t sample_sizes_entries;
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62 uint32_t chunks;
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63
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64 ngx_uint_t start_sample;
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65 ngx_uint_t start_chunk;
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66 ngx_uint_t chunk_samples;
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67 uint64_t chunk_samples_size;
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68 off_t start_offset;
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69
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70 size_t tkhd_size;
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71 size_t mdhd_size;
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72 size_t hdlr_size;
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73 size_t vmhd_size;
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74 size_t smhd_size;
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75 size_t dinf_size;
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76 size_t size;
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77
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78 ngx_chain_t out[NGX_HTTP_MP4_LAST_ATOM + 1];
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79
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80 ngx_buf_t trak_atom_buf;
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81 ngx_buf_t tkhd_atom_buf;
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82 ngx_buf_t mdia_atom_buf;
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83 ngx_buf_t mdhd_atom_buf;
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84 ngx_buf_t hdlr_atom_buf;
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85 ngx_buf_t minf_atom_buf;
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86 ngx_buf_t vmhd_atom_buf;
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87 ngx_buf_t smhd_atom_buf;
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88 ngx_buf_t dinf_atom_buf;
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89 ngx_buf_t stbl_atom_buf;
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90 ngx_buf_t stsd_atom_buf;
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91 ngx_buf_t stts_atom_buf;
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92 ngx_buf_t stts_data_buf;
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93 ngx_buf_t stss_atom_buf;
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94 ngx_buf_t stss_data_buf;
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95 ngx_buf_t ctts_atom_buf;
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96 ngx_buf_t ctts_data_buf;
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97 ngx_buf_t stsc_atom_buf;
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98 ngx_buf_t stsc_chunk_buf;
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99 ngx_buf_t stsc_data_buf;
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100 ngx_buf_t stsz_atom_buf;
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101 ngx_buf_t stsz_data_buf;
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102 ngx_buf_t stco_atom_buf;
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103 ngx_buf_t stco_data_buf;
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104 ngx_buf_t co64_atom_buf;
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105 ngx_buf_t co64_data_buf;
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106
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107 ngx_mp4_stsc_entry_t stsc_chunk_entry;
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108 } ngx_http_mp4_trak_t;
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109
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110
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111 typedef struct {
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112 ngx_file_t file;
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113
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114 u_char *buffer;
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115 u_char *buffer_start;
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116 u_char *buffer_pos;
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117 u_char *buffer_end;
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118 size_t buffer_size;
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119
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120 off_t offset;
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121 off_t end;
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122 off_t content_length;
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123 ngx_uint_t start;
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124 uint32_t timescale;
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125 ngx_http_request_t *request;
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126 ngx_array_t trak;
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127 ngx_http_mp4_trak_t traks[2];
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128
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129 size_t ftyp_size;
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130 size_t moov_size;
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131
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132 ngx_chain_t *out;
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133 ngx_chain_t ftyp_atom;
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134 ngx_chain_t moov_atom;
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135 ngx_chain_t mvhd_atom;
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136 ngx_chain_t mdat_atom;
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137 ngx_chain_t mdat_data;
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138
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139 ngx_buf_t ftyp_atom_buf;
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140 ngx_buf_t moov_atom_buf;
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141 ngx_buf_t mvhd_atom_buf;
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142 ngx_buf_t mdat_atom_buf;
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143 ngx_buf_t mdat_data_buf;
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144
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145 u_char moov_atom_header[8];
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146 u_char mdat_atom_header[16];
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147 } ngx_http_mp4_file_t;
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148
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149
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150 typedef struct {
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151 char *name;
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152 ngx_int_t (*handler)(ngx_http_mp4_file_t *mp4,
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153 uint64_t atom_data_size);
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154 } ngx_http_mp4_atom_handler_t;
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155
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156
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157 #define ngx_mp4_atom_header(mp4) (mp4->buffer_pos - 8)
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158 #define ngx_mp4_atom_data(mp4) mp4->buffer_pos
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650
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159 #define ngx_mp4_atom_data_size(t) (uint64_t) (sizeof(t) - 8)
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634
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160 #define ngx_mp4_atom_next(mp4, n) mp4->buffer_pos += n; mp4->offset += n
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161
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162
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163 #define ngx_mp4_set_atom_name(p, n1, n2, n3, n4) \
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164 ((u_char *) (p))[4] = n1; \
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165 ((u_char *) (p))[5] = n2; \
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166 ((u_char *) (p))[6] = n3; \
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167 ((u_char *) (p))[7] = n4
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168
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169 #define ngx_mp4_get_32value(p) \
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644
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170 ( ((uint32_t) ((u_char *) (p))[0] << 24) \
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171 + ( ((u_char *) (p))[1] << 16) \
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172 + ( ((u_char *) (p))[2] << 8) \
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173 + ( ((u_char *) (p))[3]) )
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634
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174
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175 #define ngx_mp4_set_32value(p, n) \
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176 ((u_char *) (p))[0] = (u_char) ((n) >> 24); \
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177 ((u_char *) (p))[1] = (u_char) ((n) >> 16); \
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178 ((u_char *) (p))[2] = (u_char) ((n) >> 8); \
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179 ((u_char *) (p))[3] = (u_char) (n)
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180
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181 #define ngx_mp4_get_64value(p) \
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182 ( ((uint64_t) ((u_char *) (p))[0] << 56) \
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183 + ((uint64_t) ((u_char *) (p))[1] << 48) \
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184 + ((uint64_t) ((u_char *) (p))[2] << 40) \
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185 + ((uint64_t) ((u_char *) (p))[3] << 32) \
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186 + ((uint64_t) ((u_char *) (p))[4] << 24) \
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187 + ( ((u_char *) (p))[5] << 16) \
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188 + ( ((u_char *) (p))[6] << 8) \
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189 + ( ((u_char *) (p))[7]) )
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190
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191 #define ngx_mp4_set_64value(p, n) \
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192 ((u_char *) (p))[0] = (u_char) ((uint64_t) (n) >> 56); \
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193 ((u_char *) (p))[1] = (u_char) ((uint64_t) (n) >> 48); \
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194 ((u_char *) (p))[2] = (u_char) ((uint64_t) (n) >> 40); \
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195 ((u_char *) (p))[3] = (u_char) ((uint64_t) (n) >> 32); \
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196 ((u_char *) (p))[4] = (u_char) ( (n) >> 24); \
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197 ((u_char *) (p))[5] = (u_char) ( (n) >> 16); \
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198 ((u_char *) (p))[6] = (u_char) ( (n) >> 8); \
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199 ((u_char *) (p))[7] = (u_char) (n)
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200
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201 #define ngx_mp4_last_trak(mp4) \
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202 &((ngx_http_mp4_trak_t *) mp4->trak.elts)[mp4->trak.nelts - 1]
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203
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204
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205 static ngx_int_t ngx_http_mp4_process(ngx_http_mp4_file_t *mp4);
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206 static ngx_int_t ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
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207 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size);
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650
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208 static ngx_int_t ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size);
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634
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209 static ngx_int_t ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4,
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210 uint64_t atom_data_size);
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211 static ngx_int_t ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4,
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212 uint64_t atom_data_size);
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213 static ngx_int_t ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4,
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214 uint64_t atom_data_size);
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215 static size_t ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4,
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216 off_t start_offset);
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217 static ngx_int_t ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4,
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218 uint64_t atom_data_size);
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219 static ngx_int_t ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4,
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220 uint64_t atom_data_size);
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221 static void ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
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222 ngx_http_mp4_trak_t *trak);
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223 static ngx_int_t ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4,
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224 uint64_t atom_data_size);
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225 static ngx_int_t ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4,
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226 uint64_t atom_data_size);
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227 static ngx_int_t ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4,
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228 uint64_t atom_data_size);
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229 static void ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
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230 ngx_http_mp4_trak_t *trak);
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231 static ngx_int_t ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4,
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232 uint64_t atom_data_size);
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233 static ngx_int_t ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4,
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234 uint64_t atom_data_size);
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235 static ngx_int_t ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4,
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236 uint64_t atom_data_size);
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237 static void ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
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238 ngx_http_mp4_trak_t *trak);
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239 static ngx_int_t ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4,
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240 uint64_t atom_data_size);
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241 static ngx_int_t ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4,
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242 uint64_t atom_data_size);
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243 static ngx_int_t ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4,
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244 uint64_t atom_data_size);
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245 static ngx_int_t ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4,
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246 uint64_t atom_data_size);
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247 static void ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
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248 ngx_http_mp4_trak_t *trak);
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249 static ngx_int_t ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4,
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250 uint64_t atom_data_size);
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251 static ngx_int_t ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4,
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252 uint64_t atom_data_size);
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253 static ngx_int_t ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
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254 ngx_http_mp4_trak_t *trak);
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255 static ngx_int_t ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4,
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256 uint64_t atom_data_size);
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257 static ngx_int_t ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
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258 ngx_http_mp4_trak_t *trak);
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259 static ngx_int_t ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4,
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260 uint64_t atom_data_size);
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261 static void ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
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262 ngx_http_mp4_trak_t *trak);
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263 static ngx_int_t ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4,
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264 uint64_t atom_data_size);
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265 static ngx_int_t ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
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266 ngx_http_mp4_trak_t *trak);
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267 static ngx_int_t ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4,
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268 uint64_t atom_data_size);
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650
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269 static ngx_int_t ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
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634
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270 ngx_http_mp4_trak_t *trak);
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271 static ngx_int_t ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4,
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272 uint64_t atom_data_size);
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273 static ngx_int_t ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
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274 ngx_http_mp4_trak_t *trak);
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275 static void ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
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276 ngx_http_mp4_trak_t *trak, int32_t adjustment);
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277 static ngx_int_t ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4,
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278 uint64_t atom_data_size);
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279 static ngx_int_t ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
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280 ngx_http_mp4_trak_t *trak);
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281 static void ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
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282 ngx_http_mp4_trak_t *trak, off_t adjustment);
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283 static char *ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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284 static void *ngx_http_mp4_create_conf(ngx_conf_t *cf);
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285 static char *ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child);
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286
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287 static ngx_command_t ngx_http_mp4_commands[] = {
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288
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289 { ngx_string("mp4"),
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290 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
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291 ngx_http_mp4,
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292 0,
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293 0,
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294 NULL },
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295
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296 { ngx_string("mp4_buffer_size"),
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297 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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298 ngx_conf_set_size_slot,
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299 NGX_HTTP_LOC_CONF_OFFSET,
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300 offsetof(ngx_http_mp4_conf_t, buffer_size),
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301 NULL },
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302
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303 { ngx_string("mp4_max_buffer_size"),
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304 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
305 ngx_conf_set_size_slot,
|
|
|
306 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
307 offsetof(ngx_http_mp4_conf_t, max_buffer_size),
|
|
|
308 NULL },
|
|
|
309
|
|
|
310 ngx_null_command
|
|
|
311 };
|
|
|
312
|
|
|
313
|
|
|
314 static ngx_http_module_t ngx_http_mp4_module_ctx = {
|
|
|
315 NULL, /* preconfiguration */
|
|
|
316 NULL, /* postconfiguration */
|
|
|
317
|
|
|
318 NULL, /* create main configuration */
|
|
|
319 NULL, /* init main configuration */
|
|
|
320
|
|
|
321 NULL, /* create server configuration */
|
|
|
322 NULL, /* merge server configuration */
|
|
|
323
|
|
|
324 ngx_http_mp4_create_conf, /* create location configuration */
|
|
|
325 ngx_http_mp4_merge_conf /* merge location configuration */
|
|
|
326 };
|
|
|
327
|
|
|
328
|
|
|
329 ngx_module_t ngx_http_mp4_module = {
|
|
|
330 NGX_MODULE_V1,
|
|
|
331 &ngx_http_mp4_module_ctx, /* module context */
|
|
|
332 ngx_http_mp4_commands, /* module directives */
|
|
|
333 NGX_HTTP_MODULE, /* module type */
|
|
|
334 NULL, /* init master */
|
|
|
335 NULL, /* init module */
|
|
|
336 NULL, /* init process */
|
|
|
337 NULL, /* init thread */
|
|
|
338 NULL, /* exit thread */
|
|
|
339 NULL, /* exit process */
|
|
|
340 NULL, /* exit master */
|
|
|
341 NGX_MODULE_V1_PADDING
|
|
|
342 };
|
|
|
343
|
|
|
344
|
|
|
345 static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = {
|
|
|
346 { "ftyp", ngx_http_mp4_read_ftyp_atom },
|
|
|
347 { "moov", ngx_http_mp4_read_moov_atom },
|
|
|
348 { "mdat", ngx_http_mp4_read_mdat_atom },
|
|
|
349 { NULL, NULL }
|
|
|
350 };
|
|
|
351
|
|
|
352 static ngx_http_mp4_atom_handler_t ngx_http_mp4_moov_atoms[] = {
|
|
|
353 { "mvhd", ngx_http_mp4_read_mvhd_atom },
|
|
|
354 { "trak", ngx_http_mp4_read_trak_atom },
|
|
|
355 { "cmov", ngx_http_mp4_read_cmov_atom },
|
|
|
356 { NULL, NULL }
|
|
|
357 };
|
|
|
358
|
|
|
359 static ngx_http_mp4_atom_handler_t ngx_http_mp4_trak_atoms[] = {
|
|
|
360 { "tkhd", ngx_http_mp4_read_tkhd_atom },
|
|
|
361 { "mdia", ngx_http_mp4_read_mdia_atom },
|
|
|
362 { NULL, NULL }
|
|
|
363 };
|
|
|
364
|
|
|
365 static ngx_http_mp4_atom_handler_t ngx_http_mp4_mdia_atoms[] = {
|
|
|
366 { "mdhd", ngx_http_mp4_read_mdhd_atom },
|
|
|
367 { "hdlr", ngx_http_mp4_read_hdlr_atom },
|
|
|
368 { "minf", ngx_http_mp4_read_minf_atom },
|
|
|
369 { NULL, NULL }
|
|
|
370 };
|
|
|
371
|
|
|
372 static ngx_http_mp4_atom_handler_t ngx_http_mp4_minf_atoms[] = {
|
|
|
373 { "vmhd", ngx_http_mp4_read_vmhd_atom },
|
|
|
374 { "smhd", ngx_http_mp4_read_smhd_atom },
|
|
|
375 { "dinf", ngx_http_mp4_read_dinf_atom },
|
|
|
376 { "stbl", ngx_http_mp4_read_stbl_atom },
|
|
|
377 { NULL, NULL }
|
|
|
378 };
|
|
|
379
|
|
|
380 static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = {
|
|
|
381 { "stsd", ngx_http_mp4_read_stsd_atom },
|
|
|
382 { "stts", ngx_http_mp4_read_stts_atom },
|
|
|
383 { "stss", ngx_http_mp4_read_stss_atom },
|
|
|
384 { "ctts", ngx_http_mp4_read_ctts_atom },
|
|
|
385 { "stsc", ngx_http_mp4_read_stsc_atom },
|
|
|
386 { "stsz", ngx_http_mp4_read_stsz_atom },
|
|
|
387 { "stco", ngx_http_mp4_read_stco_atom },
|
|
|
388 { "co64", ngx_http_mp4_read_co64_atom },
|
|
|
389 { NULL, NULL }
|
|
|
390 };
|
|
|
391
|
|
|
392
|
|
|
393 static ngx_int_t
|
|
|
394 ngx_http_mp4_handler(ngx_http_request_t *r)
|
|
|
395 {
|
|
|
396 u_char *last;
|
|
|
397 size_t root;
|
|
|
398 ngx_int_t rc, start;
|
|
|
399 ngx_uint_t level;
|
|
|
400 ngx_str_t path, value;
|
|
|
401 ngx_log_t *log;
|
|
|
402 ngx_buf_t *b;
|
|
|
403 ngx_chain_t out;
|
|
|
404 ngx_http_mp4_file_t *mp4;
|
|
|
405 ngx_open_file_info_t of;
|
|
|
406 ngx_http_core_loc_conf_t *clcf;
|
|
|
407
|
|
|
408 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
|
|
409 return NGX_HTTP_NOT_ALLOWED;
|
|
|
410 }
|
|
|
411
|
|
|
412 if (r->uri.data[r->uri.len - 1] == '/') {
|
|
|
413 return NGX_DECLINED;
|
|
|
414 }
|
|
|
415
|
|
|
416 rc = ngx_http_discard_request_body(r);
|
|
|
417
|
|
|
418 if (rc != NGX_OK) {
|
|
|
419 return rc;
|
|
|
420 }
|
|
|
421
|
|
|
422 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
423 if (last == NULL) {
|
|
|
424 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
425 }
|
|
|
426
|
|
|
427 log = r->connection->log;
|
|
|
428
|
|
|
429 path.len = last - path.data;
|
|
|
430
|
|
|
431 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
|
|
|
432 "http mp4 filename: \"%V\"", &path);
|
|
|
433
|
|
|
434 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
435
|
|
|
436 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
|
|
|
437
|
|
|
438 of.read_ahead = clcf->read_ahead;
|
|
|
439 of.directio = NGX_MAX_OFF_T_VALUE;
|
|
|
440 of.valid = clcf->open_file_cache_valid;
|
|
|
441 of.min_uses = clcf->open_file_cache_min_uses;
|
|
|
442 of.errors = clcf->open_file_cache_errors;
|
|
|
443 of.events = clcf->open_file_cache_events;
|
|
|
444
|
|
|
445 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
|
|
|
446 != NGX_OK)
|
|
|
447 {
|
|
|
448 switch (of.err) {
|
|
|
449
|
|
|
450 case 0:
|
|
|
451 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
452
|
|
|
453 case NGX_ENOENT:
|
|
|
454 case NGX_ENOTDIR:
|
|
|
455 case NGX_ENAMETOOLONG:
|
|
|
456
|
|
|
457 level = NGX_LOG_ERR;
|
|
|
458 rc = NGX_HTTP_NOT_FOUND;
|
|
|
459 break;
|
|
|
460
|
|
|
461 case NGX_EACCES:
|
|
|
462
|
|
|
463 level = NGX_LOG_ERR;
|
|
|
464 rc = NGX_HTTP_FORBIDDEN;
|
|
|
465 break;
|
|
|
466
|
|
|
467 default:
|
|
|
468
|
|
|
469 level = NGX_LOG_CRIT;
|
|
|
470 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
471 break;
|
|
|
472 }
|
|
|
473
|
|
|
474 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
|
|
|
475 ngx_log_error(level, log, of.err,
|
|
|
476 "%s \"%s\" failed", of.failed, path.data);
|
|
|
477 }
|
|
|
478
|
|
|
479 return rc;
|
|
|
480 }
|
|
|
481
|
|
|
482 if (!of.is_file) {
|
|
|
483
|
|
|
484 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
|
|
|
485 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
486 ngx_close_file_n " \"%s\" failed", path.data);
|
|
|
487 }
|
|
|
488
|
|
|
489 return NGX_DECLINED;
|
|
|
490 }
|
|
|
491
|
|
|
492 r->root_tested = !r->error_page;
|
|
|
493 r->allow_ranges = 1;
|
|
|
494
|
|
|
495 start = -1;
|
|
|
496 r->headers_out.content_length_n = of.size;
|
|
|
497 mp4 = NULL;
|
|
|
498 b = NULL;
|
|
|
499
|
|
|
500 if (r->args.len) {
|
|
|
501
|
|
|
502 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
|
|
|
503
|
|
|
504 /*
|
|
|
505 * A Flash player may send start value with a lot of digits
|
|
|
506 * after dot so strtod() is used instead of atofp(). NaNs and
|
|
|
507 * infinities become negative numbers after (int) conversion.
|
|
|
508 */
|
|
|
509
|
|
|
510 ngx_set_errno(0);
|
|
|
511 start = (int) (strtod((char *) value.data, NULL) * 1000);
|
|
|
512
|
|
|
513 if (ngx_errno == 0 && start >= 0) {
|
|
|
514 r->allow_ranges = 0;
|
|
|
515
|
|
|
516 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t));
|
|
|
517 if (mp4 == NULL) {
|
|
|
518 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
519 }
|
|
|
520
|
|
|
521 mp4->file.fd = of.fd;
|
|
|
522 mp4->file.name = path;
|
|
|
523 mp4->file.log = r->connection->log;;
|
|
|
524 mp4->end = of.size;
|
|
|
525 mp4->start = (ngx_uint_t) start;
|
|
|
526 mp4->request = r;
|
|
|
527
|
|
|
528 switch (ngx_http_mp4_process(mp4)) {
|
|
|
529
|
|
|
530 case NGX_DECLINED:
|
|
|
531 if (mp4->buffer) {
|
|
|
532 ngx_pfree(r->pool, mp4->buffer);
|
|
|
533 }
|
|
|
534
|
|
|
535 ngx_pfree(r->pool, mp4);
|
|
|
536 mp4 = NULL;
|
|
|
537
|
|
|
538 break;
|
|
|
539
|
|
|
540 case NGX_OK:
|
|
|
541 r->headers_out.content_length_n = mp4->content_length;
|
|
|
542 break;
|
|
|
543
|
|
|
544 default: /* NGX_ERROR */
|
|
|
545 if (mp4->buffer) {
|
|
|
546 ngx_pfree(r->pool, mp4->buffer);
|
|
|
547 }
|
|
|
548
|
|
|
549 ngx_pfree(r->pool, mp4);
|
|
|
550
|
|
|
551 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
552 }
|
|
|
553 }
|
|
|
554 }
|
|
|
555 }
|
|
|
556
|
|
|
557 log->action = "sending mp4 to client";
|
|
|
558
|
|
|
559 if (clcf->directio <= of.size) {
|
|
|
560
|
|
|
561 /*
|
|
|
562 * DIRECTIO is set on transfer only
|
|
|
563 * to allow kernel to cache "moov" atom
|
|
|
564 */
|
|
|
565
|
|
|
566 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) {
|
|
|
567 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
568 ngx_directio_on_n " \"%s\" failed", path.data);
|
|
|
569 }
|
|
|
570
|
|
|
571 of.is_directio = 1;
|
|
|
572
|
|
|
573 if (mp4) {
|
|
|
574 mp4->file.directio = 1;
|
|
|
575 }
|
|
|
576 }
|
|
|
577
|
|
|
578 r->headers_out.status = NGX_HTTP_OK;
|
|
|
579 r->headers_out.last_modified_time = of.mtime;
|
|
|
580
|
|
|
581 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
|
582 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
583 }
|
|
|
584
|
|
|
585 if (mp4 == NULL) {
|
|
|
586 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
587 if (b == NULL) {
|
|
|
588 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
589 }
|
|
|
590
|
|
|
591 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
592 if (b->file == NULL) {
|
|
|
593 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
594 }
|
|
|
595 }
|
|
|
596
|
|
|
597 rc = ngx_http_send_header(r);
|
|
|
598
|
|
|
599 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
600 return rc;
|
|
|
601 }
|
|
|
602
|
|
|
603 if (mp4) {
|
|
|
604 return ngx_http_output_filter(r, mp4->out);
|
|
|
605 }
|
|
|
606
|
|
|
607 b->file_pos = 0;
|
|
|
608 b->file_last = of.size;
|
|
|
609
|
|
|
610 b->in_file = b->file_last ? 1 : 0;
|
|
|
611 b->last_buf = 1;
|
|
|
612 b->last_in_chain = 1;
|
|
|
613
|
|
|
614 b->file->fd = of.fd;
|
|
|
615 b->file->name = path;
|
|
|
616 b->file->log = log;
|
|
|
617 b->file->directio = of.is_directio;
|
|
|
618
|
|
|
619 out.buf = b;
|
|
|
620 out.next = NULL;
|
|
|
621
|
|
|
622 return ngx_http_output_filter(r, &out);
|
|
|
623 }
|
|
|
624
|
|
|
625
|
|
|
626 static ngx_int_t
|
|
|
627 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
|
628 {
|
|
|
629 off_t start_offset, adjustment;
|
|
|
630 ngx_int_t rc;
|
|
|
631 ngx_uint_t i, j;
|
|
|
632 ngx_chain_t **prev;
|
|
|
633 ngx_http_mp4_trak_t *trak;
|
|
|
634 ngx_http_mp4_conf_t *conf;
|
|
|
635
|
|
|
636 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
637 "mp4 start:%ui", mp4->start);
|
|
|
638
|
|
|
639 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
640
|
|
|
641 mp4->buffer_size = conf->buffer_size;
|
|
|
642
|
|
|
643 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
|
644 if (rc != NGX_OK) {
|
|
|
645 return rc;
|
|
|
646 }
|
|
|
647
|
|
|
648 if (mp4->trak.nelts == 0) {
|
|
|
649 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
650 "no mp4 trak atoms were found in \"%s\"",
|
|
|
651 mp4->file.name.data);
|
|
|
652 return NGX_ERROR;
|
|
|
653 }
|
|
|
654
|
|
|
655 if (mp4->mdat_atom.buf == NULL) {
|
|
|
656 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
657 "no mp4 mdat atom was found in \"%s\"",
|
|
|
658 mp4->file.name.data);
|
|
|
659 return NGX_ERROR;
|
|
|
660 }
|
|
|
661
|
|
|
662 prev = &mp4->out;
|
|
|
663
|
|
|
664 if (mp4->ftyp_atom.buf) {
|
|
|
665 *prev = &mp4->ftyp_atom;
|
|
|
666 prev = &mp4->ftyp_atom.next;
|
|
|
667 }
|
|
|
668
|
|
|
669 *prev = &mp4->moov_atom;
|
|
|
670 prev = &mp4->moov_atom.next;
|
|
|
671
|
|
|
672 if (mp4->mvhd_atom.buf) {
|
|
|
673 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
|
674 *prev = &mp4->mvhd_atom;
|
|
|
675 prev = &mp4->mvhd_atom.next;
|
|
|
676 }
|
|
|
677
|
|
|
678 start_offset = mp4->end;
|
|
|
679 trak = mp4->trak.elts;
|
|
|
680
|
|
|
681 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
|
682
|
|
|
683 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
684 return NGX_ERROR;
|
|
|
685 }
|
|
|
686
|
|
|
687 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
688 return NGX_ERROR;
|
|
|
689 }
|
|
|
690
|
|
|
691 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
|
692
|
|
|
693 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
694 return NGX_ERROR;
|
|
|
695 }
|
|
|
696
|
|
650
|
697 if (ngx_http_mp4_update_stsz_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
698 return NGX_ERROR;
|
|
|
699 }
|
|
634
|
700
|
|
|
701 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
702 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
703 return NGX_ERROR;
|
|
|
704 }
|
|
|
705
|
|
|
706 } else {
|
|
|
707 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
|
708 return NGX_ERROR;
|
|
|
709 }
|
|
|
710 }
|
|
|
711
|
|
|
712 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
|
713 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
|
714 trak[i].size += trak[i].mdhd_size;
|
|
|
715 trak[i].size += trak[i].hdlr_size;
|
|
|
716 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
|
717 trak[i].size += trak[i].tkhd_size;
|
|
|
718 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
|
719
|
|
|
720 mp4->moov_size += trak[i].size;
|
|
|
721
|
|
|
722 if (start_offset > trak[i].start_offset) {
|
|
|
723 start_offset = trak[i].start_offset;
|
|
|
724 }
|
|
|
725
|
|
|
726 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
|
727 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
|
728
|
|
|
729 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
|
730 if (trak[i].out[j].buf) {
|
|
|
731 *prev = &trak[i].out[j];
|
|
|
732 prev = &trak[i].out[j].next;
|
|
|
733 }
|
|
|
734 }
|
|
|
735 }
|
|
|
736
|
|
|
737 mp4->moov_size += 8;
|
|
|
738
|
|
|
739 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
|
740 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
|
741 mp4->content_length += mp4->moov_size;
|
|
|
742
|
|
|
743 *prev = &mp4->mdat_atom;
|
|
|
744
|
|
|
745 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
|
746 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
|
747 - start_offset;
|
|
|
748
|
|
636
|
749 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
650
|
750 "mp4 adjustment:%O", adjustment);
|
|
634
|
751
|
|
|
752 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
|
753 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
|
754 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
|
755 } else {
|
|
|
756 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
|
757 }
|
|
|
758 }
|
|
|
759
|
|
|
760 return NGX_OK;
|
|
|
761 }
|
|
|
762
|
|
|
763
|
|
|
764 typedef struct {
|
|
|
765 u_char size[4];
|
|
|
766 u_char name[4];
|
|
|
767 } ngx_mp4_atom_header_t;
|
|
|
768
|
|
|
769 typedef struct {
|
|
|
770 u_char size[4];
|
|
|
771 u_char name[4];
|
|
|
772 u_char size64[8];
|
|
|
773 } ngx_mp4_atom_header64_t;
|
|
|
774
|
|
|
775
|
|
|
776 static ngx_int_t
|
|
|
777 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
|
778 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
|
779 {
|
|
|
780 off_t end;
|
|
|
781 size_t atom_header_size;
|
|
|
782 u_char *atom_header, *atom_name;
|
|
|
783 uint64_t atom_size;
|
|
|
784 ngx_int_t rc;
|
|
|
785 ngx_uint_t n;
|
|
|
786
|
|
|
787 end = mp4->offset + atom_data_size;
|
|
|
788
|
|
|
789 while (mp4->offset < end) {
|
|
|
790
|
|
650
|
791 if (ngx_http_mp4_read(mp4, sizeof(uint32_t)) != NGX_OK) {
|
|
|
792 return NGX_ERROR;
|
|
634
|
793 }
|
|
|
794
|
|
|
795 atom_header = mp4->buffer_pos;
|
|
|
796 atom_size = ngx_mp4_get_32value(atom_header);
|
|
|
797 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
798
|
|
|
799 if (atom_size == 0) {
|
|
|
800 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
801 "mp4 atom end");
|
|
|
802 return NGX_OK;
|
|
|
803 }
|
|
|
804
|
|
|
805 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
|
806
|
|
|
807 if (atom_size == 1) {
|
|
|
808
|
|
650
|
809 if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header64_t))
|
|
|
810 != NGX_OK)
|
|
634
|
811 {
|
|
650
|
812 return NGX_ERROR;
|
|
634
|
813 }
|
|
|
814
|
|
|
815 /* 64-bit atom size */
|
|
650
|
816 atom_header = mp4->buffer_pos;
|
|
634
|
817 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
|
818 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
819
|
|
|
820 } else {
|
|
|
821 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
822 "\"%s\" mp4 atom is too small:%uL",
|
|
|
823 mp4->file.name.data, atom_size);
|
|
|
824 return NGX_ERROR;
|
|
|
825 }
|
|
|
826 }
|
|
|
827
|
|
650
|
828 if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header_t)) != NGX_OK) {
|
|
|
829 return NGX_ERROR;
|
|
634
|
830 }
|
|
|
831
|
|
650
|
832 atom_header = mp4->buffer_pos;
|
|
634
|
833 atom_name = atom_header + sizeof(uint32_t);
|
|
|
834
|
|
636
|
835 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
634
|
836 "mp4 atom: %*s @%O:%uL",
|
|
|
837 4, atom_name, mp4->offset, atom_size);
|
|
|
838
|
|
650
|
839 if (atom_size > (uint64_t) (NGX_MAX_OFF_T_VALUE - mp4->offset)
|
|
|
840 || mp4->offset + (off_t) atom_size > end)
|
|
|
841 {
|
|
|
842 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
843 "\"%s\" mp4 atom too large:%uL",
|
|
|
844 mp4->file.name.data, atom_size);
|
|
|
845 return NGX_ERROR;
|
|
|
846 }
|
|
|
847
|
|
634
|
848 for (n = 0; atom[n].name; n++) {
|
|
|
849
|
|
|
850 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
|
851
|
|
|
852 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
|
853
|
|
|
854 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
|
855 if (rc != NGX_OK) {
|
|
|
856 return rc;
|
|
|
857 }
|
|
|
858
|
|
|
859 goto next;
|
|
|
860 }
|
|
|
861 }
|
|
|
862
|
|
|
863 ngx_mp4_atom_next(mp4, atom_size);
|
|
|
864
|
|
|
865 next:
|
|
|
866 continue;
|
|
|
867 }
|
|
|
868
|
|
|
869 return NGX_OK;
|
|
|
870 }
|
|
|
871
|
|
|
872
|
|
|
873 static ngx_int_t
|
|
650
|
874 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size)
|
|
634
|
875 {
|
|
650
|
876 ssize_t n;
|
|
|
877
|
|
|
878 if (mp4->buffer_pos + size <= mp4->buffer_end) {
|
|
|
879 return NGX_OK;
|
|
|
880 }
|
|
634
|
881
|
|
|
882 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
|
883 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
|
884 }
|
|
|
885
|
|
650
|
886 if (mp4->buffer_size < size) {
|
|
|
887 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
888 "\"%s\" mp4 file truncated", mp4->file.name.data);
|
|
|
889 return NGX_ERROR;
|
|
|
890 }
|
|
|
891
|
|
634
|
892 if (mp4->buffer == NULL) {
|
|
|
893 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
|
894 if (mp4->buffer == NULL) {
|
|
|
895 return NGX_ERROR;
|
|
|
896 }
|
|
|
897
|
|
|
898 mp4->buffer_start = mp4->buffer;
|
|
|
899 }
|
|
|
900
|
|
|
901 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
|
902 mp4->offset);
|
|
|
903
|
|
|
904 if (n == NGX_ERROR) {
|
|
|
905 return NGX_ERROR;
|
|
|
906 }
|
|
|
907
|
|
650
|
908 if ((size_t) n != mp4->buffer_size) {
|
|
|
909 ngx_log_error(NGX_LOG_CRIT, mp4->file.log, 0,
|
|
|
910 ngx_read_file_n " read only %z of %z from \"%s\"",
|
|
|
911 n, mp4->buffer_size, mp4->file.name.data);
|
|
|
912 return NGX_ERROR;
|
|
634
|
913 }
|
|
|
914
|
|
|
915 mp4->buffer_pos = mp4->buffer_start;
|
|
650
|
916 mp4->buffer_end = mp4->buffer_start + mp4->buffer_size;
|
|
634
|
917
|
|
|
918 return NGX_OK;
|
|
|
919 }
|
|
|
920
|
|
|
921
|
|
|
922 static ngx_int_t
|
|
|
923 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
924 {
|
|
|
925 u_char *ftyp_atom;
|
|
|
926 size_t atom_size;
|
|
|
927 ngx_buf_t *atom;
|
|
|
928
|
|
|
929 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
|
930
|
|
650
|
931 if (atom_data_size > 1024
|
|
|
932 || ngx_mp4_atom_data(mp4) + atom_data_size > mp4->buffer_end)
|
|
|
933 {
|
|
634
|
934 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
935 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
|
936 mp4->file.name.data, atom_data_size);
|
|
|
937 return NGX_ERROR;
|
|
|
938 }
|
|
|
939
|
|
|
940 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
941
|
|
|
942 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
|
943 if (ftyp_atom == NULL) {
|
|
|
944 return NGX_ERROR;
|
|
|
945 }
|
|
|
946
|
|
|
947 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
|
948 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
|
949
|
|
|
950 /*
|
|
|
951 * only moov atom content is guaranteed to be in mp4->buffer
|
|
|
952 * during sending response, so ftyp atom content should be copied
|
|
|
953 */
|
|
|
954 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
|
955 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
|
956
|
|
|
957 atom = &mp4->ftyp_atom_buf;
|
|
|
958 atom->temporary = 1;
|
|
|
959 atom->pos = ftyp_atom;
|
|
|
960 atom->last = ftyp_atom + atom_size;
|
|
|
961
|
|
|
962 mp4->ftyp_atom.buf = atom;
|
|
|
963 mp4->ftyp_size = atom_size;
|
|
|
964 mp4->content_length = atom_size;
|
|
|
965
|
|
|
966 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
967
|
|
|
968 return NGX_OK;
|
|
|
969 }
|
|
|
970
|
|
|
971
|
|
|
972 /*
|
|
|
973 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
|
974 * will be set to this buffer part after moov atom processing.
|
|
|
975 */
|
|
|
976 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
|
977
|
|
|
978 static ngx_int_t
|
|
|
979 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
980 {
|
|
|
981 ngx_int_t rc;
|
|
|
982 ngx_uint_t no_mdat;
|
|
|
983 ngx_buf_t *atom;
|
|
|
984 ngx_http_mp4_conf_t *conf;
|
|
|
985
|
|
|
986 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
|
987
|
|
|
988 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
|
989
|
|
|
990 if (no_mdat && mp4->start == 0) {
|
|
|
991 /*
|
|
|
992 * send original file if moov atom resides before
|
|
|
993 * mdat atom and client requests integral file
|
|
|
994 */
|
|
|
995 return NGX_DECLINED;
|
|
|
996 }
|
|
|
997
|
|
|
998 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
|
999
|
|
|
1000 if (atom_data_size > mp4->buffer_size) {
|
|
|
1001
|
|
|
1002 if (atom_data_size > conf->max_buffer_size) {
|
|
|
1003 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1004 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
|
1005 "you may want to increase mp4_max_buffer_size",
|
|
|
1006 mp4->file.name.data, atom_data_size);
|
|
|
1007 return NGX_ERROR;
|
|
|
1008 }
|
|
|
1009
|
|
|
1010 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
|
1011 mp4->buffer = NULL;
|
|
|
1012 mp4->buffer_pos = NULL;
|
|
|
1013 mp4->buffer_end = NULL;
|
|
|
1014
|
|
|
1015 mp4->buffer_size = (size_t) atom_data_size
|
|
|
1016 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
|
1017 }
|
|
|
1018
|
|
|
1019 mp4->trak.elts = &mp4->traks;
|
|
|
1020 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
|
1021 mp4->trak.nalloc = 2;
|
|
|
1022 mp4->trak.pool = mp4->request->pool;
|
|
|
1023
|
|
|
1024 atom = &mp4->moov_atom_buf;
|
|
|
1025 atom->temporary = 1;
|
|
|
1026 atom->pos = mp4->moov_atom_header;
|
|
|
1027 atom->last = mp4->moov_atom_header + 8;
|
|
|
1028
|
|
|
1029 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
|
1030
|
|
|
1031 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
|
1032
|
|
|
1033 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
|
1034
|
|
|
1035 if (no_mdat) {
|
|
|
1036 mp4->buffer_start = mp4->buffer_pos;
|
|
|
1037 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
|
1038
|
|
|
1039 } else {
|
|
|
1040 /* skip atoms after moov atom */
|
|
|
1041 mp4->offset = mp4->end;
|
|
|
1042 }
|
|
|
1043
|
|
|
1044 return rc;
|
|
|
1045 }
|
|
|
1046
|
|
|
1047
|
|
|
1048 static ngx_int_t
|
|
|
1049 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1050 {
|
|
|
1051 ngx_buf_t *data;
|
|
|
1052
|
|
|
1053 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
|
1054
|
|
|
1055 data = &mp4->mdat_data_buf;
|
|
|
1056 data->file = &mp4->file;
|
|
|
1057 data->in_file = 1;
|
|
|
1058 data->last_buf = 1;
|
|
|
1059 data->last_in_chain = 1;
|
|
|
1060 data->file_last = mp4->offset + atom_data_size;
|
|
|
1061
|
|
|
1062 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
|
1063 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
|
1064 mp4->mdat_data.buf = data;
|
|
|
1065
|
|
|
1066 if (mp4->trak.nelts) {
|
|
|
1067 /* skip atoms after mdat atom */
|
|
|
1068 mp4->offset = mp4->end;
|
|
|
1069
|
|
|
1070 } else {
|
|
|
1071 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1072 }
|
|
|
1073
|
|
|
1074 return NGX_OK;
|
|
|
1075 }
|
|
|
1076
|
|
|
1077
|
|
|
1078 static size_t
|
|
|
1079 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
|
1080 {
|
|
|
1081 off_t atom_data_size;
|
|
|
1082 u_char *atom_header;
|
|
|
1083 uint32_t atom_header_size;
|
|
|
1084 uint64_t atom_size;
|
|
|
1085 ngx_buf_t *atom;
|
|
|
1086
|
|
|
1087 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
|
1088 mp4->mdat_data.buf->file_pos = start_offset;
|
|
|
1089
|
|
636
|
1090 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
634
|
1091 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
|
1092
|
|
|
1093 atom_header = mp4->mdat_atom_header;
|
|
|
1094
|
|
|
1095 if ((uint64_t) atom_data_size > 0xffffffff) {
|
|
|
1096 atom_size = 1;
|
|
|
1097 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
|
1098 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
|
1099 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
|
1100 } else {
|
|
|
1101 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
|
1102 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
|
1103 }
|
|
|
1104
|
|
640
|
1105 mp4->content_length += atom_header_size + atom_data_size;
|
|
|
1106
|
|
634
|
1107 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1108 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
|
1109
|
|
|
1110 atom = &mp4->mdat_atom_buf;
|
|
|
1111 atom->temporary = 1;
|
|
|
1112 atom->pos = atom_header;
|
|
|
1113 atom->last = atom_header + atom_header_size;
|
|
|
1114
|
|
|
1115 return atom_header_size;
|
|
|
1116 }
|
|
|
1117
|
|
|
1118
|
|
|
1119 typedef struct {
|
|
|
1120 u_char size[4];
|
|
|
1121 u_char name[4];
|
|
|
1122 u_char version[1];
|
|
|
1123 u_char flags[3];
|
|
|
1124 u_char creation_time[4];
|
|
|
1125 u_char modification_time[4];
|
|
|
1126 u_char timescale[4];
|
|
|
1127 u_char duration[4];
|
|
|
1128 u_char rate[4];
|
|
|
1129 u_char volume[2];
|
|
|
1130 u_char reserved[10];
|
|
|
1131 u_char matrix[36];
|
|
|
1132 u_char preview_time[4];
|
|
|
1133 u_char preview_duration[4];
|
|
|
1134 u_char poster_time[4];
|
|
|
1135 u_char selection_time[4];
|
|
|
1136 u_char selection_duration[4];
|
|
|
1137 u_char current_time[4];
|
|
|
1138 u_char next_track_id[4];
|
|
|
1139 } ngx_mp4_mvhd_atom_t;
|
|
|
1140
|
|
|
1141 typedef struct {
|
|
|
1142 u_char size[4];
|
|
|
1143 u_char name[4];
|
|
|
1144 u_char version[1];
|
|
|
1145 u_char flags[3];
|
|
|
1146 u_char creation_time[8];
|
|
|
1147 u_char modification_time[8];
|
|
|
1148 u_char timescale[4];
|
|
|
1149 u_char duration[8];
|
|
|
1150 u_char rate[4];
|
|
|
1151 u_char volume[2];
|
|
|
1152 u_char reserved[10];
|
|
|
1153 u_char matrix[36];
|
|
|
1154 u_char preview_time[4];
|
|
|
1155 u_char preview_duration[4];
|
|
|
1156 u_char poster_time[4];
|
|
|
1157 u_char selection_time[4];
|
|
|
1158 u_char selection_duration[4];
|
|
|
1159 u_char current_time[4];
|
|
|
1160 u_char next_track_id[4];
|
|
|
1161 } ngx_mp4_mvhd64_atom_t;
|
|
|
1162
|
|
|
1163
|
|
|
1164 static ngx_int_t
|
|
|
1165 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1166 {
|
|
|
1167 u_char *atom_header;
|
|
|
1168 size_t atom_size;
|
|
|
1169 uint32_t timescale;
|
|
|
1170 uint64_t duration;
|
|
|
1171 ngx_buf_t *atom;
|
|
|
1172 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
|
1173 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
|
1174
|
|
|
1175 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
|
1176
|
|
|
1177 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1178 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
|
1179 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
|
1180 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
|
1181
|
|
650
|
1182 if (ngx_mp4_atom_data_size(ngx_mp4_mvhd_atom_t) > atom_data_size) {
|
|
|
1183 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1184 "\"%s\" mp4 mvhd atom too small", mp4->file.name.data);
|
|
|
1185 return NGX_ERROR;
|
|
|
1186 }
|
|
|
1187
|
|
634
|
1188 if (mvhd_atom->version[0] == 0) {
|
|
|
1189 /* version 0: 32-bit duration */
|
|
|
1190 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
|
1191 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
|
1192
|
|
|
1193 } else {
|
|
|
1194 /* version 1: 64-bit duration */
|
|
650
|
1195
|
|
|
1196 if (ngx_mp4_atom_data_size(ngx_mp4_mvhd64_atom_t) > atom_data_size) {
|
|
|
1197 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1198 "\"%s\" mp4 mvhd atom too small",
|
|
|
1199 mp4->file.name.data);
|
|
|
1200 return NGX_ERROR;
|
|
|
1201 }
|
|
|
1202
|
|
634
|
1203 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
|
1204 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
|
1205 }
|
|
|
1206
|
|
|
1207 mp4->timescale = timescale;
|
|
|
1208
|
|
|
1209 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1210 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1211 timescale, duration, (double) duration / timescale);
|
|
|
1212
|
|
|
1213 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1214
|
|
|
1215 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1216 "mvhd new duration:%uL, time:%.3fs",
|
|
|
1217 duration, (double) duration / timescale);
|
|
|
1218
|
|
|
1219 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1220 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
|
1221
|
|
|
1222 if (mvhd_atom->version[0] == 0) {
|
|
|
1223 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
|
1224
|
|
|
1225 } else {
|
|
|
1226 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
|
1227 }
|
|
|
1228
|
|
|
1229 atom = &mp4->mvhd_atom_buf;
|
|
|
1230 atom->temporary = 1;
|
|
|
1231 atom->pos = atom_header;
|
|
|
1232 atom->last = atom_header + atom_size;
|
|
|
1233
|
|
|
1234 mp4->mvhd_atom.buf = atom;
|
|
|
1235
|
|
|
1236 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1237
|
|
|
1238 return NGX_OK;
|
|
|
1239 }
|
|
|
1240
|
|
|
1241
|
|
|
1242 static ngx_int_t
|
|
|
1243 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1244 {
|
|
|
1245 u_char *atom_header, *atom_end;
|
|
|
1246 off_t atom_file_end;
|
|
|
1247 ngx_int_t rc;
|
|
|
1248 ngx_buf_t *atom;
|
|
|
1249 ngx_http_mp4_trak_t *trak;
|
|
|
1250
|
|
|
1251 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
|
1252
|
|
|
1253 trak = ngx_array_push(&mp4->trak);
|
|
|
1254 if (trak == NULL) {
|
|
|
1255 return NGX_ERROR;
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1259
|
|
|
1260 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1261 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
|
1262
|
|
|
1263 atom = &trak->trak_atom_buf;
|
|
|
1264 atom->temporary = 1;
|
|
|
1265 atom->pos = atom_header;
|
|
|
1266 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1267
|
|
|
1268 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
|
1269
|
|
|
1270 atom_end = mp4->buffer_pos + atom_data_size;
|
|
|
1271 atom_file_end = mp4->offset + atom_data_size;
|
|
|
1272
|
|
|
1273 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
|
1274
|
|
|
1275 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1276 "mp4 trak atom: %i", rc);
|
|
|
1277
|
|
|
1278 if (rc == NGX_DECLINED) {
|
|
|
1279 /* skip this trak */
|
|
|
1280 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
|
1281 mp4->trak.nelts--;
|
|
|
1282 mp4->buffer_pos = atom_end;
|
|
|
1283 mp4->offset = atom_file_end;
|
|
|
1284 return NGX_OK;
|
|
|
1285 }
|
|
|
1286
|
|
|
1287 return rc;
|
|
|
1288 }
|
|
|
1289
|
|
|
1290
|
|
|
1291 static void
|
|
|
1292 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1293 ngx_http_mp4_trak_t *trak)
|
|
|
1294 {
|
|
|
1295 ngx_buf_t *atom;
|
|
|
1296
|
|
|
1297 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1298 atom = &trak->trak_atom_buf;
|
|
|
1299 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1300 }
|
|
|
1301
|
|
|
1302
|
|
|
1303 static ngx_int_t
|
|
|
1304 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1305 {
|
|
|
1306 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1307 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
|
1308 mp4->file.name.data);
|
|
|
1309
|
|
|
1310 return NGX_ERROR;
|
|
|
1311 }
|
|
|
1312
|
|
|
1313
|
|
|
1314 typedef struct {
|
|
|
1315 u_char size[4];
|
|
|
1316 u_char name[4];
|
|
|
1317 u_char version[1];
|
|
|
1318 u_char flags[3];
|
|
|
1319 u_char creation_time[4];
|
|
|
1320 u_char modification_time[4];
|
|
|
1321 u_char track_id[4];
|
|
|
1322 u_char reserved1[4];
|
|
|
1323 u_char duration[4];
|
|
|
1324 u_char reserved2[8];
|
|
|
1325 u_char layer[2];
|
|
|
1326 u_char group[2];
|
|
|
1327 u_char volume[2];
|
|
|
1328 u_char reverved3[2];
|
|
|
1329 u_char matrix[36];
|
|
|
1330 u_char width[4];
|
|
|
1331 u_char heigth[4];
|
|
|
1332 } ngx_mp4_tkhd_atom_t;
|
|
|
1333
|
|
|
1334 typedef struct {
|
|
|
1335 u_char size[4];
|
|
|
1336 u_char name[4];
|
|
|
1337 u_char version[1];
|
|
|
1338 u_char flags[3];
|
|
|
1339 u_char creation_time[8];
|
|
|
1340 u_char modification_time[8];
|
|
|
1341 u_char track_id[4];
|
|
|
1342 u_char reserved1[4];
|
|
|
1343 u_char duration[8];
|
|
|
1344 u_char reserved2[8];
|
|
|
1345 u_char layer[2];
|
|
|
1346 u_char group[2];
|
|
|
1347 u_char volume[2];
|
|
|
1348 u_char reverved3[2];
|
|
|
1349 u_char matrix[36];
|
|
|
1350 u_char width[4];
|
|
|
1351 u_char heigth[4];
|
|
|
1352 } ngx_mp4_tkhd64_atom_t;
|
|
|
1353
|
|
|
1354
|
|
|
1355 static ngx_int_t
|
|
|
1356 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1357 {
|
|
|
1358 u_char *atom_header;
|
|
|
1359 size_t atom_size;
|
|
|
1360 uint64_t duration;
|
|
|
1361 ngx_buf_t *atom;
|
|
|
1362 ngx_http_mp4_trak_t *trak;
|
|
|
1363 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
|
1364 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
|
1365
|
|
|
1366 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
|
1367
|
|
|
1368 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1369 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
|
1370 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
|
1371 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
|
1372
|
|
650
|
1373 if (ngx_mp4_atom_data_size(ngx_mp4_tkhd_atom_t) > atom_data_size) {
|
|
|
1374 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1375 "\"%s\" mp4 tkhd atom too small", mp4->file.name.data);
|
|
|
1376 return NGX_ERROR;
|
|
|
1377 }
|
|
|
1378
|
|
634
|
1379 if (tkhd_atom->version[0] == 0) {
|
|
|
1380 /* version 0: 32-bit duration */
|
|
|
1381 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
|
1382
|
|
|
1383 } else {
|
|
|
1384 /* version 1: 64-bit duration */
|
|
650
|
1385
|
|
|
1386 if (ngx_mp4_atom_data_size(ngx_mp4_tkhd64_atom_t) > atom_data_size) {
|
|
|
1387 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1388 "\"%s\" mp4 tkhd atom too small",
|
|
|
1389 mp4->file.name.data);
|
|
|
1390 return NGX_ERROR;
|
|
|
1391 }
|
|
|
1392
|
|
634
|
1393 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
|
1394 }
|
|
|
1395
|
|
|
1396 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1397 "tkhd duration:%uL, time:%.3fs",
|
|
|
1398 duration, (double) duration / mp4->timescale);
|
|
|
1399
|
|
|
1400 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
|
1401
|
|
|
1402 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1403 "tkhd new duration:%uL, time:%.3fs",
|
|
|
1404 duration, (double) duration / mp4->timescale);
|
|
|
1405
|
|
|
1406 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1407
|
|
|
1408 trak = ngx_mp4_last_trak(mp4);
|
|
|
1409 trak->tkhd_size = atom_size;
|
|
|
1410
|
|
|
1411 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
|
1412
|
|
|
1413 if (tkhd_atom->version[0] == 0) {
|
|
|
1414 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
|
1415
|
|
|
1416 } else {
|
|
|
1417 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
|
1418 }
|
|
|
1419
|
|
|
1420 atom = &trak->tkhd_atom_buf;
|
|
|
1421 atom->temporary = 1;
|
|
|
1422 atom->pos = atom_header;
|
|
|
1423 atom->last = atom_header + atom_size;
|
|
|
1424
|
|
|
1425 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
|
1426
|
|
|
1427 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1428
|
|
|
1429 return NGX_OK;
|
|
|
1430 }
|
|
|
1431
|
|
|
1432
|
|
|
1433 static ngx_int_t
|
|
|
1434 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1435 {
|
|
|
1436 u_char *atom_header;
|
|
|
1437 ngx_buf_t *atom;
|
|
|
1438 ngx_http_mp4_trak_t *trak;
|
|
|
1439
|
|
|
1440 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
|
1441
|
|
|
1442 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1443 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
|
1444
|
|
|
1445 trak = ngx_mp4_last_trak(mp4);
|
|
|
1446
|
|
|
1447 atom = &trak->mdia_atom_buf;
|
|
|
1448 atom->temporary = 1;
|
|
|
1449 atom->pos = atom_header;
|
|
|
1450 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1451
|
|
|
1452 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
|
1453
|
|
|
1454 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
|
1455 }
|
|
|
1456
|
|
|
1457
|
|
|
1458 static void
|
|
|
1459 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1460 ngx_http_mp4_trak_t *trak)
|
|
|
1461 {
|
|
|
1462 ngx_buf_t *atom;
|
|
|
1463
|
|
|
1464 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1465 atom = &trak->mdia_atom_buf;
|
|
|
1466 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1467 }
|
|
|
1468
|
|
|
1469
|
|
|
1470 typedef struct {
|
|
|
1471 u_char size[4];
|
|
|
1472 u_char name[4];
|
|
|
1473 u_char version[1];
|
|
|
1474 u_char flags[3];
|
|
|
1475 u_char creation_time[4];
|
|
|
1476 u_char modification_time[4];
|
|
|
1477 u_char timescale[4];
|
|
|
1478 u_char duration[4];
|
|
|
1479 u_char language[2];
|
|
|
1480 u_char quality[2];
|
|
|
1481 } ngx_mp4_mdhd_atom_t;
|
|
|
1482
|
|
|
1483 typedef struct {
|
|
|
1484 u_char size[4];
|
|
|
1485 u_char name[4];
|
|
|
1486 u_char version[1];
|
|
|
1487 u_char flags[3];
|
|
|
1488 u_char creation_time[8];
|
|
|
1489 u_char modification_time[8];
|
|
|
1490 u_char timescale[4];
|
|
|
1491 u_char duration[8];
|
|
|
1492 u_char language[2];
|
|
|
1493 u_char quality[2];
|
|
|
1494 } ngx_mp4_mdhd64_atom_t;
|
|
|
1495
|
|
|
1496
|
|
|
1497 static ngx_int_t
|
|
|
1498 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1499 {
|
|
|
1500 u_char *atom_header;
|
|
|
1501 size_t atom_size;
|
|
|
1502 uint32_t timescale;
|
|
|
1503 uint64_t duration;
|
|
|
1504 ngx_buf_t *atom;
|
|
|
1505 ngx_http_mp4_trak_t *trak;
|
|
|
1506 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
|
1507 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
|
1508
|
|
|
1509 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
|
1510
|
|
|
1511 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1512 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
|
1513 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
|
1514 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
|
1515
|
|
650
|
1516 if (ngx_mp4_atom_data_size(ngx_mp4_mdhd_atom_t) > atom_data_size) {
|
|
|
1517 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1518 "\"%s\" mp4 mdhd atom too small", mp4->file.name.data);
|
|
|
1519 return NGX_ERROR;
|
|
|
1520 }
|
|
|
1521
|
|
634
|
1522 if (mdhd_atom->version[0] == 0) {
|
|
|
1523 /* version 0: everything is 32-bit */
|
|
|
1524 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
|
1525 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
|
1526
|
|
|
1527 } else {
|
|
|
1528 /* version 1: 64-bit duration and 32-bit timescale */
|
|
650
|
1529
|
|
|
1530 if (ngx_mp4_atom_data_size(ngx_mp4_mdhd64_atom_t) > atom_data_size) {
|
|
|
1531 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1532 "\"%s\" mp4 mdhd atom too small",
|
|
|
1533 mp4->file.name.data);
|
|
|
1534 return NGX_ERROR;
|
|
|
1535 }
|
|
|
1536
|
|
634
|
1537 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
|
1538 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
|
1539 }
|
|
|
1540
|
|
|
1541 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1542 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
|
1543 timescale, duration, (double) duration / timescale);
|
|
|
1544
|
|
|
1545 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
|
1546
|
|
|
1547 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1548 "mdhd new duration:%uL, time:%.3fs",
|
|
|
1549 duration, (double) duration / timescale);
|
|
|
1550
|
|
|
1551 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1552
|
|
|
1553 trak = ngx_mp4_last_trak(mp4);
|
|
|
1554 trak->mdhd_size = atom_size;
|
|
|
1555 trak->timescale = timescale;
|
|
|
1556
|
|
|
1557 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
|
1558
|
|
|
1559 if (mdhd_atom->version[0] == 0) {
|
|
|
1560 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
|
1561
|
|
|
1562 } else {
|
|
|
1563 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
|
1564 }
|
|
|
1565
|
|
|
1566 atom = &trak->mdhd_atom_buf;
|
|
|
1567 atom->temporary = 1;
|
|
|
1568 atom->pos = atom_header;
|
|
|
1569 atom->last = atom_header + atom_size;
|
|
|
1570
|
|
|
1571 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
|
1572
|
|
|
1573 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1574
|
|
|
1575 return NGX_OK;
|
|
|
1576 }
|
|
|
1577
|
|
|
1578
|
|
|
1579 static ngx_int_t
|
|
|
1580 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1581 {
|
|
|
1582 u_char *atom_header;
|
|
|
1583 size_t atom_size;
|
|
|
1584 ngx_buf_t *atom;
|
|
|
1585 ngx_http_mp4_trak_t *trak;
|
|
|
1586
|
|
|
1587 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
|
1588
|
|
|
1589 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1590 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1591 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1592 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
|
1593
|
|
|
1594 trak = ngx_mp4_last_trak(mp4);
|
|
|
1595
|
|
|
1596 atom = &trak->hdlr_atom_buf;
|
|
|
1597 atom->temporary = 1;
|
|
|
1598 atom->pos = atom_header;
|
|
|
1599 atom->last = atom_header + atom_size;
|
|
|
1600
|
|
|
1601 trak->hdlr_size = atom_size;
|
|
|
1602 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
|
1603
|
|
|
1604 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1605
|
|
|
1606 return NGX_OK;
|
|
|
1607 }
|
|
|
1608
|
|
|
1609
|
|
|
1610 static ngx_int_t
|
|
|
1611 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1612 {
|
|
|
1613 u_char *atom_header;
|
|
|
1614 ngx_buf_t *atom;
|
|
|
1615 ngx_http_mp4_trak_t *trak;
|
|
|
1616
|
|
|
1617 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
|
1618
|
|
|
1619 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1620 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
|
1621
|
|
|
1622 trak = ngx_mp4_last_trak(mp4);
|
|
|
1623
|
|
|
1624 atom = &trak->minf_atom_buf;
|
|
|
1625 atom->temporary = 1;
|
|
|
1626 atom->pos = atom_header;
|
|
|
1627 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1628
|
|
|
1629 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
|
1630
|
|
|
1631 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
|
1632 }
|
|
|
1633
|
|
|
1634
|
|
|
1635 static void
|
|
|
1636 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1637 ngx_http_mp4_trak_t *trak)
|
|
|
1638 {
|
|
|
1639 ngx_buf_t *atom;
|
|
|
1640
|
|
|
1641 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
|
1642 + trak->vmhd_size
|
|
|
1643 + trak->smhd_size
|
|
|
1644 + trak->dinf_size;
|
|
|
1645 atom = &trak->minf_atom_buf;
|
|
|
1646 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1647 }
|
|
|
1648
|
|
|
1649
|
|
|
1650 static ngx_int_t
|
|
|
1651 ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1652 {
|
|
|
1653 u_char *atom_header;
|
|
|
1654 size_t atom_size;
|
|
|
1655 ngx_buf_t *atom;
|
|
|
1656 ngx_http_mp4_trak_t *trak;
|
|
|
1657
|
|
|
1658 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom");
|
|
|
1659
|
|
|
1660 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1661 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1662 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1663 ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd');
|
|
|
1664
|
|
|
1665 trak = ngx_mp4_last_trak(mp4);
|
|
|
1666
|
|
|
1667 atom = &trak->vmhd_atom_buf;
|
|
|
1668 atom->temporary = 1;
|
|
|
1669 atom->pos = atom_header;
|
|
|
1670 atom->last = atom_header + atom_size;
|
|
|
1671
|
|
|
1672 trak->vmhd_size += atom_size;
|
|
|
1673 trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom;
|
|
|
1674
|
|
|
1675 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1676
|
|
|
1677 return NGX_OK;
|
|
|
1678 }
|
|
|
1679
|
|
|
1680
|
|
|
1681 static ngx_int_t
|
|
|
1682 ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1683 {
|
|
|
1684 u_char *atom_header;
|
|
|
1685 size_t atom_size;
|
|
|
1686 ngx_buf_t *atom;
|
|
|
1687 ngx_http_mp4_trak_t *trak;
|
|
|
1688
|
|
|
1689 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
|
1690
|
|
|
1691 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1692 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1693 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1694 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
|
1695
|
|
|
1696 trak = ngx_mp4_last_trak(mp4);
|
|
|
1697
|
|
|
1698 atom = &trak->smhd_atom_buf;
|
|
|
1699 atom->temporary = 1;
|
|
|
1700 atom->pos = atom_header;
|
|
|
1701 atom->last = atom_header + atom_size;
|
|
|
1702
|
|
|
1703 trak->vmhd_size += atom_size;
|
|
|
1704 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
|
1705
|
|
|
1706 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1707
|
|
|
1708 return NGX_OK;
|
|
|
1709 }
|
|
|
1710
|
|
|
1711
|
|
|
1712 static ngx_int_t
|
|
|
1713 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1714 {
|
|
|
1715 u_char *atom_header;
|
|
|
1716 size_t atom_size;
|
|
|
1717 ngx_buf_t *atom;
|
|
|
1718 ngx_http_mp4_trak_t *trak;
|
|
|
1719
|
|
|
1720 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
|
1721
|
|
|
1722 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1723 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1724 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
1725 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
|
1726
|
|
|
1727 trak = ngx_mp4_last_trak(mp4);
|
|
|
1728
|
|
|
1729 atom = &trak->dinf_atom_buf;
|
|
|
1730 atom->temporary = 1;
|
|
|
1731 atom->pos = atom_header;
|
|
|
1732 atom->last = atom_header + atom_size;
|
|
|
1733
|
|
|
1734 trak->dinf_size += atom_size;
|
|
|
1735 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
|
1736
|
|
|
1737 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1738
|
|
|
1739 return NGX_OK;
|
|
|
1740 }
|
|
|
1741
|
|
|
1742
|
|
|
1743 static ngx_int_t
|
|
|
1744 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1745 {
|
|
|
1746 u_char *atom_header;
|
|
|
1747 ngx_buf_t *atom;
|
|
|
1748 ngx_http_mp4_trak_t *trak;
|
|
|
1749
|
|
|
1750 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
|
1751
|
|
|
1752 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1753 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
|
1754
|
|
|
1755 trak = ngx_mp4_last_trak(mp4);
|
|
|
1756
|
|
|
1757 atom = &trak->stbl_atom_buf;
|
|
|
1758 atom->temporary = 1;
|
|
|
1759 atom->pos = atom_header;
|
|
|
1760 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
|
1761
|
|
|
1762 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
|
1763
|
|
|
1764 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
|
1765 }
|
|
|
1766
|
|
|
1767
|
|
|
1768 static void
|
|
|
1769 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1770 ngx_http_mp4_trak_t *trak)
|
|
|
1771 {
|
|
|
1772 ngx_buf_t *atom;
|
|
|
1773
|
|
|
1774 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
|
1775 atom = &trak->stbl_atom_buf;
|
|
|
1776 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
|
1777 }
|
|
|
1778
|
|
|
1779
|
|
|
1780 typedef struct {
|
|
|
1781 u_char size[4];
|
|
|
1782 u_char name[4];
|
|
|
1783 u_char version[1];
|
|
|
1784 u_char flags[3];
|
|
|
1785 u_char entries[4];
|
|
|
1786
|
|
|
1787 u_char media_size[4];
|
|
|
1788 u_char media_name[4];
|
|
|
1789 } ngx_mp4_stsd_atom_t;
|
|
|
1790
|
|
|
1791
|
|
|
1792 static ngx_int_t
|
|
|
1793 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1794 {
|
|
|
1795 u_char *atom_header, *atom_table;
|
|
|
1796 size_t atom_size;
|
|
|
1797 ngx_buf_t *atom;
|
|
|
1798 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
|
1799 ngx_http_mp4_trak_t *trak;
|
|
|
1800
|
|
|
1801 /* sample description atom */
|
|
|
1802
|
|
|
1803 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
|
1804
|
|
|
1805 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1806 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
|
1807 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
1808 atom_table = atom_header + atom_size;
|
|
|
1809 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
|
1810 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
|
1811
|
|
650
|
1812 if (ngx_mp4_atom_data_size(ngx_mp4_stsd_atom_t) > atom_data_size) {
|
|
634
|
1813 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
650
|
1814 "\"%s\" mp4 stsd atom too small", mp4->file.name.data);
|
|
634
|
1815 return NGX_ERROR;
|
|
|
1816 }
|
|
|
1817
|
|
|
1818 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1819 "stsd entries:%uD, media:%*s",
|
|
|
1820 ngx_mp4_get_32value(stsd_atom->entries),
|
|
|
1821 4, stsd_atom->media_name);
|
|
|
1822
|
|
|
1823 /* supported media format: "avc1" (H.264) and "mp4a" (MPEG-4/AAC) */
|
|
|
1824
|
|
|
1825 if (ngx_strncmp(stsd_atom->media_name, "avc1", 4) != 0
|
|
|
1826 && ngx_strncmp(stsd_atom->media_name, "mp4a", 4) != 0)
|
|
|
1827 {
|
|
|
1828 return NGX_DECLINED;
|
|
|
1829 }
|
|
|
1830
|
|
|
1831 trak = ngx_mp4_last_trak(mp4);
|
|
|
1832
|
|
|
1833 atom = &trak->stsd_atom_buf;
|
|
|
1834 atom->temporary = 1;
|
|
|
1835 atom->pos = atom_header;
|
|
|
1836 atom->last = atom_table;
|
|
|
1837
|
|
|
1838 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
|
1839 trak->size += atom_size;
|
|
|
1840
|
|
|
1841 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1842
|
|
|
1843 return NGX_OK;
|
|
|
1844 }
|
|
|
1845
|
|
|
1846
|
|
|
1847 typedef struct {
|
|
|
1848 u_char size[4];
|
|
|
1849 u_char name[4];
|
|
|
1850 u_char version[1];
|
|
|
1851 u_char flags[3];
|
|
|
1852 u_char entries[4];
|
|
|
1853 } ngx_mp4_stts_atom_t;
|
|
|
1854
|
|
|
1855 typedef struct {
|
|
|
1856 u_char count[4];
|
|
|
1857 u_char duration[4];
|
|
|
1858 } ngx_mp4_stts_entry_t;
|
|
|
1859
|
|
|
1860
|
|
|
1861 static ngx_int_t
|
|
|
1862 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
1863 {
|
|
|
1864 u_char *atom_header, *atom_table, *atom_end;
|
|
|
1865 uint32_t entries;
|
|
|
1866 ngx_buf_t *atom, *data;
|
|
|
1867 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1868 ngx_http_mp4_trak_t *trak;
|
|
|
1869
|
|
|
1870 /* time-to-sample atom */
|
|
|
1871
|
|
|
1872 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
|
1873
|
|
|
1874 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
1875 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
|
1876 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
|
1877
|
|
650
|
1878 if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t) > atom_data_size) {
|
|
|
1879 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1880 "\"%s\" mp4 stts atom too small", mp4->file.name.data);
|
|
|
1881 return NGX_ERROR;
|
|
|
1882 }
|
|
|
1883
|
|
634
|
1884 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
|
1885
|
|
|
1886 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1887 "mp4 time-to-sample entries:%uD", entries);
|
|
|
1888
|
|
650
|
1889 if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t)
|
|
|
1890 + entries * sizeof(ngx_mp4_stts_entry_t) > atom_data_size)
|
|
|
1891 {
|
|
|
1892 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1893 "\"%s\" mp4 stts atom too small", mp4->file.name.data);
|
|
|
1894 return NGX_ERROR;
|
|
|
1895 }
|
|
|
1896
|
|
634
|
1897 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
|
1898 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
|
1899
|
|
|
1900 trak = ngx_mp4_last_trak(mp4);
|
|
|
1901 trak->time_to_sample_entries = entries;
|
|
|
1902
|
|
|
1903 atom = &trak->stts_atom_buf;
|
|
|
1904 atom->temporary = 1;
|
|
|
1905 atom->pos = atom_header;
|
|
|
1906 atom->last = atom_table;
|
|
|
1907
|
|
|
1908 data = &trak->stts_data_buf;
|
|
|
1909 data->temporary = 1;
|
|
|
1910 data->pos = atom_table;
|
|
|
1911 data->last = atom_end;
|
|
|
1912
|
|
|
1913 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
|
1914 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
|
1915
|
|
|
1916 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
1917
|
|
|
1918 return NGX_OK;
|
|
|
1919 }
|
|
|
1920
|
|
|
1921
|
|
|
1922 static ngx_int_t
|
|
|
1923 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
1924 ngx_http_mp4_trak_t *trak)
|
|
|
1925 {
|
|
|
1926 size_t atom_size;
|
|
|
1927 uint32_t entries, count, duration;
|
|
|
1928 uint64_t start_time;
|
|
|
1929 ngx_buf_t *atom, *data;
|
|
|
1930 ngx_uint_t start_sample;
|
|
|
1931 ngx_mp4_stts_atom_t *stts_atom;
|
|
|
1932 ngx_mp4_stts_entry_t *entry, *end;
|
|
|
1933
|
|
|
1934 /*
|
|
|
1935 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
|
1936 * from mdia.mdhd atom which may reside after mdia.minf
|
|
|
1937 */
|
|
|
1938
|
|
|
1939 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1940 "mp4 stts atom update");
|
|
|
1941
|
|
|
1942 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
|
1943
|
|
|
1944 if (data == NULL) {
|
|
|
1945 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1946 "no mp4 stts atoms were found in \"%s\"",
|
|
|
1947 mp4->file.name.data);
|
|
|
1948 return NGX_ERROR;
|
|
|
1949 }
|
|
|
1950
|
|
|
1951 entries = trak->time_to_sample_entries;
|
|
638
|
1952 start_time = (uint64_t) mp4->start * trak->timescale / 1000;
|
|
634
|
1953
|
|
|
1954 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1955 "time-to-sample start_time:%uL", start_time);
|
|
|
1956
|
|
|
1957 start_sample = 0;
|
|
|
1958 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
|
1959 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
|
1960
|
|
|
1961 while (entry < end) {
|
|
|
1962 count = ngx_mp4_get_32value(entry->count);
|
|
|
1963 duration = ngx_mp4_get_32value(entry->duration);
|
|
|
1964
|
|
|
1965 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1966 "count:%uD, duration:%uD", count, duration);
|
|
|
1967
|
|
642
|
1968 if (start_time < (uint64_t) count * duration) {
|
|
634
|
1969 start_sample += (ngx_uint_t) (start_time / duration);
|
|
650
|
1970 count -= (uint32_t) (start_time / duration);
|
|
634
|
1971 ngx_mp4_set_32value(entry->count, count);
|
|
|
1972 goto found;
|
|
|
1973 }
|
|
|
1974
|
|
|
1975 start_sample += count;
|
|
|
1976 start_time -= count * duration;
|
|
|
1977 entries--;
|
|
|
1978 entry++;
|
|
|
1979 }
|
|
|
1980
|
|
|
1981 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
1982 "start time is out mp4 stts samples in \"%s\"",
|
|
|
1983 mp4->file.name.data);
|
|
|
1984
|
|
|
1985 return NGX_ERROR;
|
|
|
1986
|
|
|
1987 found:
|
|
|
1988
|
|
|
1989 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
1990 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
|
1991
|
|
|
1992 trak->start_sample = start_sample;
|
|
|
1993
|
|
|
1994 data->pos = (u_char *) entry;
|
|
|
1995 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
|
1996 trak->size += atom_size;
|
|
|
1997
|
|
|
1998 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
|
1999 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
|
2000 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
|
2001 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
|
2002
|
|
|
2003 return NGX_OK;
|
|
|
2004 }
|
|
|
2005
|
|
|
2006
|
|
|
2007 typedef struct {
|
|
|
2008 u_char size[4];
|
|
|
2009 u_char name[4];
|
|
|
2010 u_char version[1];
|
|
|
2011 u_char flags[3];
|
|
|
2012 u_char entries[4];
|
|
|
2013 } ngx_http_mp4_stss_atom_t;
|
|
|
2014
|
|
|
2015
|
|
|
2016 static ngx_int_t
|
|
|
2017 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2018 {
|
|
|
2019 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2020 uint32_t entries;
|
|
|
2021 ngx_buf_t *atom, *data;
|
|
|
2022 ngx_http_mp4_trak_t *trak;
|
|
|
2023 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2024
|
|
|
2025 /* sync samples atom */
|
|
|
2026
|
|
|
2027 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
|
2028
|
|
|
2029 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2030 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
|
2031 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
|
2032
|
|
650
|
2033 if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t) > atom_data_size) {
|
|
|
2034 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2035 "\"%s\" mp4 stss atom too small", mp4->file.name.data);
|
|
|
2036 return NGX_ERROR;
|
|
|
2037 }
|
|
|
2038
|
|
634
|
2039 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
|
2040
|
|
|
2041 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2042 "sync sample entries:%uD", entries);
|
|
|
2043
|
|
|
2044 trak = ngx_mp4_last_trak(mp4);
|
|
|
2045 trak->sync_samples_entries = entries;
|
|
|
2046
|
|
|
2047 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
|
2048
|
|
|
2049 atom = &trak->stss_atom_buf;
|
|
|
2050 atom->temporary = 1;
|
|
|
2051 atom->pos = atom_header;
|
|
|
2052 atom->last = atom_table;
|
|
|
2053
|
|
650
|
2054 if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t)
|
|
|
2055 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2056 {
|
|
634
|
2057 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
650
|
2058 "\"%s\" mp4 stss atom too small", mp4->file.name.data);
|
|
634
|
2059 return NGX_ERROR;
|
|
|
2060 }
|
|
|
2061
|
|
650
|
2062 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2063
|
|
634
|
2064 data = &trak->stss_data_buf;
|
|
|
2065 data->temporary = 1;
|
|
|
2066 data->pos = atom_table;
|
|
|
2067 data->last = atom_end;
|
|
|
2068
|
|
|
2069 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
|
2070 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
|
2071
|
|
|
2072 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2073
|
|
|
2074 return NGX_OK;
|
|
|
2075 }
|
|
|
2076
|
|
|
2077
|
|
|
2078 static ngx_int_t
|
|
|
2079 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2080 ngx_http_mp4_trak_t *trak)
|
|
|
2081 {
|
|
|
2082 size_t atom_size;
|
|
|
2083 uint32_t entries, sample, start_sample, *entry, *end;
|
|
|
2084 ngx_buf_t *atom, *data;
|
|
|
2085 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
|
2086
|
|
|
2087 /*
|
|
|
2088 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
|
2089 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2090 * atom which may reside after mdia.minf
|
|
|
2091 */
|
|
|
2092
|
|
|
2093 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2094 "mp4 stss atom update");
|
|
|
2095
|
|
|
2096 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
|
2097
|
|
|
2098 if (data == NULL) {
|
|
|
2099 return NGX_OK;
|
|
|
2100 }
|
|
|
2101
|
|
|
2102 /* sync samples starts from 1 */
|
|
|
2103 start_sample = trak->start_sample + 1;
|
|
|
2104 entries = trak->sync_samples_entries;
|
|
|
2105
|
|
|
2106 entry = (uint32_t *) data->pos;
|
|
|
2107 end = (uint32_t *) data->last;
|
|
|
2108
|
|
|
2109 while (entry < end) {
|
|
|
2110 sample = ngx_mp4_get_32value(entry);
|
|
|
2111
|
|
|
2112 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2113 "start:%uD, sync:%uD", start_sample, sample);
|
|
|
2114
|
|
|
2115 if (sample >= start_sample) {
|
|
|
2116 goto found;
|
|
|
2117 }
|
|
|
2118
|
|
|
2119 entries--;
|
|
|
2120 entry++;
|
|
|
2121 }
|
|
|
2122
|
|
|
2123 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2124 "start sample is out of mp4 stss atom in \"%s\"",
|
|
|
2125 mp4->file.name.data);
|
|
|
2126
|
|
|
2127 return NGX_ERROR;
|
|
|
2128
|
|
|
2129 found:
|
|
|
2130
|
|
|
2131 data->pos = (u_char *) entry;
|
|
|
2132
|
|
|
2133 start_sample = trak->start_sample;
|
|
|
2134
|
|
|
2135 while (entry < end) {
|
|
|
2136 sample = ngx_mp4_get_32value(entry);
|
|
|
2137 sample -= start_sample;
|
|
|
2138 ngx_mp4_set_32value(entry, sample);
|
|
|
2139 entry++;
|
|
|
2140 }
|
|
|
2141
|
|
|
2142 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
|
2143 trak->size += atom_size;
|
|
|
2144
|
|
|
2145 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
|
2146 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
|
2147
|
|
|
2148 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
|
2149 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
|
2150
|
|
|
2151 return NGX_OK;
|
|
|
2152 }
|
|
|
2153
|
|
|
2154
|
|
|
2155 typedef struct {
|
|
|
2156 u_char size[4];
|
|
|
2157 u_char name[4];
|
|
|
2158 u_char version[1];
|
|
|
2159 u_char flags[3];
|
|
|
2160 u_char entries[4];
|
|
|
2161 } ngx_mp4_ctts_atom_t;
|
|
|
2162
|
|
|
2163 typedef struct {
|
|
|
2164 u_char count[4];
|
|
|
2165 u_char offset[4];
|
|
|
2166 } ngx_mp4_ctts_entry_t;
|
|
|
2167
|
|
|
2168
|
|
|
2169 static ngx_int_t
|
|
|
2170 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2171 {
|
|
|
2172 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2173 uint32_t entries;
|
|
|
2174 ngx_buf_t *atom, *data;
|
|
|
2175 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2176 ngx_http_mp4_trak_t *trak;
|
|
|
2177
|
|
|
2178 /* composition offsets atom */
|
|
|
2179
|
|
|
2180 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
|
2181
|
|
|
2182 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2183 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
|
2184 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
|
2185
|
|
650
|
2186 if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t) > atom_data_size) {
|
|
|
2187 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2188 "\"%s\" mp4 ctts atom too small", mp4->file.name.data);
|
|
|
2189 return NGX_ERROR;
|
|
|
2190 }
|
|
|
2191
|
|
634
|
2192 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
|
2193
|
|
|
2194 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2195 "composition offset entries:%uD", entries);
|
|
|
2196
|
|
|
2197 trak = ngx_mp4_last_trak(mp4);
|
|
|
2198 trak->composition_offset_entries = entries;
|
|
|
2199
|
|
|
2200 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
|
2201
|
|
|
2202 atom = &trak->ctts_atom_buf;
|
|
|
2203 atom->temporary = 1;
|
|
|
2204 atom->pos = atom_header;
|
|
|
2205 atom->last = atom_table;
|
|
|
2206
|
|
650
|
2207 if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t)
|
|
|
2208 + entries * sizeof(ngx_mp4_ctts_entry_t) > atom_data_size)
|
|
|
2209 {
|
|
634
|
2210 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
650
|
2211 "\"%s\" mp4 ctts atom too small", mp4->file.name.data);
|
|
634
|
2212 return NGX_ERROR;
|
|
|
2213 }
|
|
|
2214
|
|
650
|
2215 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
|
2216
|
|
634
|
2217 data = &trak->ctts_data_buf;
|
|
|
2218 data->temporary = 1;
|
|
|
2219 data->pos = atom_table;
|
|
|
2220 data->last = atom_end;
|
|
|
2221
|
|
|
2222 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
|
2223 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
|
2224
|
|
|
2225 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2226
|
|
|
2227 return NGX_OK;
|
|
|
2228 }
|
|
|
2229
|
|
|
2230
|
|
|
2231 static void
|
|
|
2232 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2233 ngx_http_mp4_trak_t *trak)
|
|
|
2234 {
|
|
|
2235 size_t atom_size;
|
|
|
2236 uint32_t entries, count, start_sample;
|
|
|
2237 ngx_buf_t *atom, *data;
|
|
|
2238 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
|
2239 ngx_mp4_ctts_entry_t *entry, *end;
|
|
|
2240
|
|
|
2241 /*
|
|
|
2242 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
|
2243 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2244 * atom which may reside after mdia.minf
|
|
|
2245 */
|
|
|
2246
|
|
|
2247 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2248 "mp4 ctts atom update");
|
|
|
2249
|
|
|
2250 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
|
2251
|
|
|
2252 if (data == NULL) {
|
|
|
2253 return;
|
|
|
2254 }
|
|
|
2255
|
|
|
2256 /* sync samples starts from 1 */
|
|
|
2257 start_sample = trak->start_sample + 1;
|
|
|
2258 entries = trak->composition_offset_entries;
|
|
|
2259 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
|
2260 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
|
2261
|
|
|
2262 while (entry < end) {
|
|
|
2263 count = ngx_mp4_get_32value(entry->count);
|
|
|
2264
|
|
636
|
2265 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
634
|
2266 "start:%uD, count:%uD, offset:%uD",
|
|
|
2267 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
|
2268
|
|
|
2269 if (start_sample <= count) {
|
|
|
2270 count -= (start_sample - 1);
|
|
|
2271 ngx_mp4_set_32value(entry->count, count);
|
|
|
2272 goto found;
|
|
|
2273 }
|
|
|
2274
|
|
|
2275 start_sample -= count;
|
|
|
2276 entries--;
|
|
|
2277 entry++;
|
|
|
2278 }
|
|
|
2279
|
|
|
2280 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
|
2281 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
|
2282
|
|
|
2283 return;
|
|
|
2284
|
|
|
2285 found:
|
|
|
2286
|
|
|
2287 data->pos = (u_char *) entry;
|
|
|
2288 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
|
2289 trak->size += atom_size;
|
|
|
2290
|
|
|
2291 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
|
2292 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
|
2293
|
|
|
2294 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
|
2295 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
|
2296
|
|
|
2297 return;
|
|
|
2298 }
|
|
|
2299
|
|
|
2300
|
|
|
2301 typedef struct {
|
|
|
2302 u_char size[4];
|
|
|
2303 u_char name[4];
|
|
|
2304 u_char version[1];
|
|
|
2305 u_char flags[3];
|
|
|
2306 u_char entries[4];
|
|
|
2307 } ngx_mp4_stsc_atom_t;
|
|
|
2308
|
|
|
2309
|
|
|
2310 static ngx_int_t
|
|
|
2311 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2312 {
|
|
|
2313 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2314 uint32_t entries;
|
|
|
2315 ngx_buf_t *atom, *data;
|
|
|
2316 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2317 ngx_http_mp4_trak_t *trak;
|
|
|
2318
|
|
|
2319 /* sample-to-chunk atom */
|
|
|
2320
|
|
|
2321 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
|
2322
|
|
|
2323 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2324 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
|
2325 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
|
2326
|
|
650
|
2327 if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t) > atom_data_size) {
|
|
|
2328 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2329 "\"%s\" mp4 stsc atom too small", mp4->file.name.data);
|
|
|
2330 return NGX_ERROR;
|
|
|
2331 }
|
|
|
2332
|
|
634
|
2333 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
|
2334
|
|
|
2335 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2336 "sample-to-chunk entries:%uD", entries);
|
|
|
2337
|
|
650
|
2338 if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t)
|
|
|
2339 + entries * sizeof(ngx_mp4_stsc_entry_t) > atom_data_size)
|
|
|
2340 {
|
|
|
2341 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2342 "\"%s\" mp4 stsc atom too small", mp4->file.name.data);
|
|
|
2343 return NGX_ERROR;
|
|
|
2344 }
|
|
|
2345
|
|
634
|
2346 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
|
2347 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2348
|
|
|
2349 trak = ngx_mp4_last_trak(mp4);
|
|
|
2350 trak->sample_to_chunk_entries = entries;
|
|
|
2351
|
|
|
2352 atom = &trak->stsc_atom_buf;
|
|
|
2353 atom->temporary = 1;
|
|
|
2354 atom->pos = atom_header;
|
|
|
2355 atom->last = atom_table;
|
|
|
2356
|
|
|
2357 data = &trak->stsc_data_buf;
|
|
|
2358 data->temporary = 1;
|
|
|
2359 data->pos = atom_table;
|
|
|
2360 data->last = atom_end;
|
|
|
2361
|
|
|
2362 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
|
2363 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
|
2364
|
|
|
2365 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2366
|
|
|
2367 return NGX_OK;
|
|
|
2368 }
|
|
|
2369
|
|
|
2370
|
|
|
2371 static ngx_int_t
|
|
|
2372 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2373 ngx_http_mp4_trak_t *trak)
|
|
|
2374 {
|
|
|
2375 size_t atom_size;
|
|
|
2376 uint32_t start_sample, entries, chunk, samples, id,
|
|
|
2377 next_chunk, n;
|
|
|
2378 ngx_buf_t *atom, *data, *buf;
|
|
|
2379 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
|
2380 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
|
2381
|
|
|
2382 /*
|
|
|
2383 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
|
2384 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2385 * atom which may reside after mdia.minf
|
|
|
2386 */
|
|
|
2387
|
|
|
2388 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2389 "mp4 stsc atom update");
|
|
|
2390
|
|
|
2391 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
|
2392
|
|
|
2393 if (data == NULL) {
|
|
|
2394 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2395 "no mp4 stsc atoms were found in \"%s\"",
|
|
|
2396 mp4->file.name.data);
|
|
|
2397 return NGX_ERROR;
|
|
|
2398 }
|
|
|
2399
|
|
650
|
2400 if (trak->sample_to_chunk_entries == 0) {
|
|
|
2401 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2402 "zero number of entries in stsc atom in \"%s\"",
|
|
|
2403 mp4->file.name.data);
|
|
|
2404 return NGX_ERROR;
|
|
|
2405 }
|
|
|
2406
|
|
634
|
2407 start_sample = (uint32_t) trak->start_sample;
|
|
|
2408 entries = trak->sample_to_chunk_entries - 1;
|
|
|
2409
|
|
|
2410 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
|
2411 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
|
2412
|
|
|
2413 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2414 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2415 id = ngx_mp4_get_32value(entry->id);
|
|
|
2416 entry++;
|
|
|
2417
|
|
|
2418 while (entry < end) {
|
|
|
2419
|
|
|
2420 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2421
|
|
|
2422 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2423 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
|
2424 "samples:%uD, id:%uD",
|
|
|
2425 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
|
2426
|
|
|
2427 n = (next_chunk - chunk) * samples;
|
|
|
2428
|
|
|
2429 if (start_sample <= n) {
|
|
|
2430 goto found;
|
|
|
2431 }
|
|
|
2432
|
|
|
2433 start_sample -= n;
|
|
|
2434
|
|
|
2435 chunk = next_chunk;
|
|
|
2436 samples = ngx_mp4_get_32value(entry->samples);
|
|
|
2437 id = ngx_mp4_get_32value(entry->id);
|
|
|
2438 entries--;
|
|
|
2439 entry++;
|
|
|
2440 }
|
|
|
2441
|
|
|
2442 next_chunk = trak->chunks;
|
|
|
2443
|
|
|
2444 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2445 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
|
2446 start_sample, chunk, next_chunk - chunk, samples);
|
|
|
2447
|
|
|
2448 n = (next_chunk - chunk) * samples;
|
|
|
2449
|
|
|
2450 if (start_sample > n) {
|
|
|
2451 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2452 "start time is out mp4 stsc chunks in \"%s\"",
|
|
|
2453 mp4->file.name.data);
|
|
|
2454 return NGX_ERROR;
|
|
|
2455 }
|
|
|
2456
|
|
|
2457 found:
|
|
|
2458
|
|
|
2459 entries++;
|
|
|
2460 entry--;
|
|
|
2461
|
|
|
2462 if (samples == 0) {
|
|
|
2463 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2464 "zero number of samples in \"%s\"",
|
|
|
2465 mp4->file.name.data);
|
|
|
2466 return NGX_ERROR;
|
|
|
2467 }
|
|
|
2468
|
|
|
2469 trak->start_chunk = chunk - 1;
|
|
|
2470
|
|
|
2471 trak->start_chunk += start_sample / samples;
|
|
|
2472 trak->chunk_samples = start_sample % samples;
|
|
|
2473
|
|
|
2474 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2475 "start chunk:%ui, samples:%uD",
|
|
|
2476 trak->start_chunk, trak->chunk_samples);
|
|
|
2477
|
|
|
2478 data->pos = (u_char *) entry;
|
|
|
2479 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
|
2480
|
|
644
|
2481 ngx_mp4_set_32value(entry->chunk, 1);
|
|
|
2482
|
|
634
|
2483 if (trak->chunk_samples) {
|
|
|
2484
|
|
|
2485 first = &trak->stsc_chunk_entry;
|
|
|
2486 ngx_mp4_set_32value(first->chunk, 1);
|
|
|
2487 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
|
2488 ngx_mp4_set_32value(first->id, id);
|
|
|
2489
|
|
|
2490 buf = &trak->stsc_chunk_buf;
|
|
|
2491 buf->temporary = 1;
|
|
|
2492 buf->pos = (u_char *) first;
|
|
|
2493 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2494
|
|
|
2495 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
|
2496
|
|
|
2497 ngx_mp4_set_32value(entry->chunk, 2);
|
|
|
2498
|
|
|
2499 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
|
2500 }
|
|
|
2501
|
|
|
2502 while (++entry < end) {
|
|
|
2503 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
|
2504 chunk -= trak->start_chunk;
|
|
|
2505 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
|
2506 }
|
|
|
2507
|
|
|
2508 trak->size += atom_size;
|
|
|
2509
|
|
|
2510 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
|
2511 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
|
2512
|
|
|
2513 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
|
2514 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
|
2515
|
|
|
2516 return NGX_OK;
|
|
|
2517 }
|
|
|
2518
|
|
|
2519
|
|
|
2520 typedef struct {
|
|
|
2521 u_char size[4];
|
|
|
2522 u_char name[4];
|
|
|
2523 u_char version[1];
|
|
|
2524 u_char flags[3];
|
|
|
2525 u_char uniform_size[4];
|
|
|
2526 u_char entries[4];
|
|
|
2527 } ngx_mp4_stsz_atom_t;
|
|
|
2528
|
|
|
2529
|
|
|
2530 static ngx_int_t
|
|
|
2531 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2532 {
|
|
|
2533 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2534 size_t atom_size;
|
|
|
2535 uint32_t entries, size;
|
|
|
2536 ngx_buf_t *atom, *data;
|
|
|
2537 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2538 ngx_http_mp4_trak_t *trak;
|
|
|
2539
|
|
|
2540 /* sample sizes atom */
|
|
|
2541
|
|
|
2542 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
|
2543
|
|
|
2544 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2545 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
|
2546 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
|
2547
|
|
650
|
2548 if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t) > atom_data_size) {
|
|
|
2549 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2550 "\"%s\" mp4 stsz atom too small", mp4->file.name.data);
|
|
|
2551 return NGX_ERROR;
|
|
|
2552 }
|
|
|
2553
|
|
634
|
2554 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
|
2555 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
|
2556
|
|
|
2557 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2558 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
|
2559
|
|
|
2560 trak = ngx_mp4_last_trak(mp4);
|
|
|
2561 trak->sample_sizes_entries = entries;
|
|
|
2562
|
|
|
2563 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
|
2564
|
|
|
2565 atom = &trak->stsz_atom_buf;
|
|
|
2566 atom->temporary = 1;
|
|
|
2567 atom->pos = atom_header;
|
|
|
2568 atom->last = atom_table;
|
|
|
2569
|
|
|
2570 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
|
2571
|
|
|
2572 if (size == 0) {
|
|
650
|
2573 if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t)
|
|
|
2574 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2575 {
|
|
634
|
2576 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
650
|
2577 "\"%s\" mp4 stsz atom too small",
|
|
634
|
2578 mp4->file.name.data);
|
|
|
2579 return NGX_ERROR;
|
|
|
2580 }
|
|
|
2581
|
|
650
|
2582 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2583
|
|
634
|
2584 data = &trak->stsz_data_buf;
|
|
|
2585 data->temporary = 1;
|
|
|
2586 data->pos = atom_table;
|
|
|
2587 data->last = atom_end;
|
|
|
2588
|
|
|
2589 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
|
2590
|
|
|
2591 } else {
|
|
|
2592 /* if size != 0 then all samples are the same size */
|
|
|
2593 /* TODO : chunk samples */
|
|
|
2594 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
|
2595 ngx_mp4_set_32value(atom_header, atom_size);
|
|
|
2596 trak->size += atom_size;
|
|
|
2597 }
|
|
|
2598
|
|
|
2599 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2600
|
|
|
2601 return NGX_OK;
|
|
|
2602 }
|
|
|
2603
|
|
|
2604
|
|
650
|
2605 static ngx_int_t
|
|
634
|
2606 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2607 ngx_http_mp4_trak_t *trak)
|
|
|
2608 {
|
|
|
2609 size_t atom_size;
|
|
|
2610 uint32_t *pos, *end;
|
|
|
2611 ngx_buf_t *atom, *data;
|
|
|
2612 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
|
2613
|
|
|
2614 /*
|
|
|
2615 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
|
2616 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
|
2617 * atom which may reside after mdia.minf
|
|
|
2618 */
|
|
|
2619
|
|
|
2620 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2621 "mp4 stsz atom update");
|
|
|
2622
|
|
|
2623 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
|
2624
|
|
|
2625 if (data) {
|
|
650
|
2626 if (trak->start_sample > trak->sample_sizes_entries) {
|
|
|
2627 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2628 "start time is out mp4 stsz samples in \"%s\"",
|
|
|
2629 mp4->file.name.data);
|
|
|
2630 return NGX_ERROR;
|
|
|
2631 }
|
|
|
2632
|
|
634
|
2633 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
|
2634 end = (uint32_t *) data->pos;
|
|
|
2635
|
|
|
2636 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
|
2637 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
|
2638 }
|
|
|
2639
|
|
|
2640 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2641 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
|
|
2642
|
|
|
2643 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
|
2644 trak->size += atom_size;
|
|
|
2645
|
|
|
2646 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
|
2647 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
|
2648
|
|
|
2649 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
|
2650 ngx_mp4_set_32value(stsz_atom->entries,
|
|
|
2651 trak->sample_sizes_entries - trak->start_sample);
|
|
|
2652 }
|
|
650
|
2653
|
|
|
2654 return NGX_OK;
|
|
634
|
2655 }
|
|
|
2656
|
|
|
2657
|
|
|
2658 typedef struct {
|
|
|
2659 u_char size[4];
|
|
|
2660 u_char name[4];
|
|
|
2661 u_char version[1];
|
|
|
2662 u_char flags[3];
|
|
|
2663 u_char entries[4];
|
|
|
2664 } ngx_mp4_stco_atom_t;
|
|
|
2665
|
|
|
2666
|
|
|
2667 static ngx_int_t
|
|
|
2668 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2669 {
|
|
|
2670 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2671 uint32_t entries;
|
|
|
2672 ngx_buf_t *atom, *data;
|
|
|
2673 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2674 ngx_http_mp4_trak_t *trak;
|
|
|
2675
|
|
|
2676 /* chunk offsets atom */
|
|
|
2677
|
|
|
2678 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
|
2679
|
|
|
2680 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2681 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
|
2682 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
|
2683
|
|
650
|
2684 if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t) > atom_data_size) {
|
|
|
2685 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2686 "\"%s\" mp4 stco atom too small", mp4->file.name.data);
|
|
|
2687 return NGX_ERROR;
|
|
|
2688 }
|
|
|
2689
|
|
634
|
2690 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
|
2691
|
|
|
2692 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2693
|
|
650
|
2694 if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t)
|
|
|
2695 + entries * sizeof(uint32_t) > atom_data_size)
|
|
|
2696 {
|
|
|
2697 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2698 "\"%s\" mp4 stco atom too small", mp4->file.name.data);
|
|
|
2699 return NGX_ERROR;
|
|
|
2700 }
|
|
|
2701
|
|
634
|
2702 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
|
2703 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
|
2704
|
|
|
2705 trak = ngx_mp4_last_trak(mp4);
|
|
|
2706 trak->chunks = entries;
|
|
|
2707
|
|
|
2708 atom = &trak->stco_atom_buf;
|
|
|
2709 atom->temporary = 1;
|
|
|
2710 atom->pos = atom_header;
|
|
|
2711 atom->last = atom_table;
|
|
|
2712
|
|
|
2713 data = &trak->stco_data_buf;
|
|
|
2714 data->temporary = 1;
|
|
|
2715 data->pos = atom_table;
|
|
|
2716 data->last = atom_end;
|
|
|
2717
|
|
|
2718 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
|
2719 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
|
2720
|
|
|
2721 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2722
|
|
|
2723 return NGX_OK;
|
|
|
2724 }
|
|
|
2725
|
|
|
2726
|
|
|
2727 static ngx_int_t
|
|
|
2728 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2729 ngx_http_mp4_trak_t *trak)
|
|
|
2730 {
|
|
|
2731 size_t atom_size;
|
|
|
2732 ngx_buf_t *atom, *data;
|
|
|
2733 ngx_mp4_stco_atom_t *stco_atom;
|
|
|
2734
|
|
|
2735 /*
|
|
|
2736 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
|
2737 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2738 * atom which may reside after mdia.minf
|
|
|
2739 */
|
|
|
2740
|
|
|
2741 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2742 "mp4 stco atom update");
|
|
|
2743
|
|
|
2744 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2745
|
|
|
2746 if (data == NULL) {
|
|
|
2747 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2748 "no mp4 stco atoms were found in \"%s\"",
|
|
|
2749 mp4->file.name.data);
|
|
|
2750 return NGX_ERROR;
|
|
|
2751 }
|
|
|
2752
|
|
650
|
2753 if (trak->start_chunk > trak->chunks) {
|
|
|
2754 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2755 "start time is out mp4 stco chunks in \"%s\"",
|
|
|
2756 mp4->file.name.data);
|
|
|
2757 return NGX_ERROR;
|
|
|
2758 }
|
|
|
2759
|
|
634
|
2760 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
|
2761 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
|
2762 trak->size += atom_size;
|
|
|
2763
|
|
|
2764 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
|
2765 trak->start_offset += trak->chunk_samples_size;
|
|
|
2766 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
|
2767
|
|
|
2768 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2769 "start chunk offset:%uD", trak->start_offset);
|
|
|
2770
|
|
|
2771 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
|
2772 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
|
2773
|
|
|
2774 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
|
2775 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2776
|
|
|
2777 return NGX_OK;
|
|
|
2778 }
|
|
|
2779
|
|
|
2780
|
|
|
2781 static void
|
|
|
2782 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2783 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
|
2784 {
|
|
|
2785 uint32_t offset, *entry, *end;
|
|
|
2786 ngx_buf_t *data;
|
|
|
2787
|
|
|
2788 /*
|
|
|
2789 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
|
2790 * minimal start offset of all traks and new moov atom size
|
|
|
2791 */
|
|
|
2792
|
|
|
2793 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2794 "mp4 stco atom adjustment");
|
|
|
2795
|
|
|
2796 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
|
2797 entry = (uint32_t *) data->pos;
|
|
|
2798 end = (uint32_t *) data->last;
|
|
|
2799
|
|
|
2800 while (entry < end) {
|
|
|
2801 offset = ngx_mp4_get_32value(entry);
|
|
|
2802 offset += adjustment;
|
|
|
2803 ngx_mp4_set_32value(entry, offset);
|
|
|
2804 entry++;
|
|
|
2805 }
|
|
|
2806 }
|
|
|
2807
|
|
|
2808
|
|
|
2809 typedef struct {
|
|
|
2810 u_char size[4];
|
|
|
2811 u_char name[4];
|
|
|
2812 u_char version[1];
|
|
|
2813 u_char flags[3];
|
|
|
2814 u_char entries[4];
|
|
|
2815 } ngx_mp4_co64_atom_t;
|
|
|
2816
|
|
|
2817
|
|
|
2818 static ngx_int_t
|
|
|
2819 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
|
2820 {
|
|
|
2821 u_char *atom_header, *atom_table, *atom_end;
|
|
|
2822 uint32_t entries;
|
|
|
2823 ngx_buf_t *atom, *data;
|
|
|
2824 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2825 ngx_http_mp4_trak_t *trak;
|
|
|
2826
|
|
|
2827 /* chunk offsets atom */
|
|
|
2828
|
|
|
2829 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
|
|
|
2830
|
|
|
2831 atom_header = ngx_mp4_atom_header(mp4);
|
|
|
2832 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
|
|
|
2833 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
|
|
|
2834
|
|
650
|
2835 if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t) > atom_data_size) {
|
|
|
2836 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2837 "\"%s\" mp4 co64 atom too small", mp4->file.name.data);
|
|
|
2838 return NGX_ERROR;
|
|
|
2839 }
|
|
|
2840
|
|
634
|
2841 entries = ngx_mp4_get_32value(co64_atom->entries);
|
|
|
2842
|
|
|
2843 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
|
2844
|
|
650
|
2845 if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t)
|
|
|
2846 + entries * sizeof(uint64_t) > atom_data_size)
|
|
|
2847 {
|
|
|
2848 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2849 "\"%s\" mp4 co64 atom too small", mp4->file.name.data);
|
|
|
2850 return NGX_ERROR;
|
|
|
2851 }
|
|
|
2852
|
|
634
|
2853 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
|
|
|
2854 atom_end = atom_table + entries * sizeof(uint64_t);
|
|
|
2855
|
|
|
2856 trak = ngx_mp4_last_trak(mp4);
|
|
|
2857 trak->chunks = entries;
|
|
|
2858
|
|
|
2859 atom = &trak->co64_atom_buf;
|
|
|
2860 atom->temporary = 1;
|
|
|
2861 atom->pos = atom_header;
|
|
|
2862 atom->last = atom_table;
|
|
|
2863
|
|
|
2864 data = &trak->co64_data_buf;
|
|
|
2865 data->temporary = 1;
|
|
|
2866 data->pos = atom_table;
|
|
|
2867 data->last = atom_end;
|
|
|
2868
|
|
|
2869 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
|
|
|
2870 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
|
|
|
2871
|
|
|
2872 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
|
2873
|
|
|
2874 return NGX_OK;
|
|
|
2875 }
|
|
|
2876
|
|
|
2877
|
|
|
2878 static ngx_int_t
|
|
|
2879 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2880 ngx_http_mp4_trak_t *trak)
|
|
|
2881 {
|
|
|
2882 size_t atom_size;
|
|
|
2883 ngx_buf_t *atom, *data;
|
|
|
2884 ngx_mp4_co64_atom_t *co64_atom;
|
|
|
2885
|
|
|
2886 /*
|
|
|
2887 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
|
2888 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
|
2889 * atom which may reside after mdia.minf
|
|
|
2890 */
|
|
|
2891
|
|
|
2892 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2893 "mp4 co64 atom update");
|
|
|
2894
|
|
|
2895 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2896
|
|
|
2897 if (data == NULL) {
|
|
|
2898 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2899 "no mp4 co64 atoms were found in \"%s\"",
|
|
|
2900 mp4->file.name.data);
|
|
|
2901 return NGX_ERROR;
|
|
|
2902 }
|
|
|
2903
|
|
650
|
2904 if (trak->start_chunk > trak->chunks) {
|
|
|
2905 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
|
2906 "start time is out mp4 co64 chunks in \"%s\"",
|
|
|
2907 mp4->file.name.data);
|
|
|
2908 return NGX_ERROR;
|
|
|
2909 }
|
|
|
2910
|
|
634
|
2911 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
|
2912 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
|
2913 trak->size += atom_size;
|
|
|
2914
|
|
|
2915 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
|
2916 trak->start_offset += trak->chunk_samples_size;
|
|
|
2917 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
|
2918
|
|
|
2919 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2920 "start chunk offset:%uL", trak->start_offset);
|
|
|
2921
|
|
|
2922 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
|
2923 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
|
2924
|
|
|
2925 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
|
2926 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
|
2927
|
|
|
2928 return NGX_OK;
|
|
|
2929 }
|
|
|
2930
|
|
|
2931
|
|
|
2932 static void
|
|
|
2933 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
|
2934 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
|
2935 {
|
|
|
2936 uint64_t offset, *entry, *end;
|
|
|
2937 ngx_buf_t *data;
|
|
|
2938
|
|
|
2939 /*
|
|
|
2940 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
|
2941 * minimal start offset of all traks and new moov atom size
|
|
|
2942 */
|
|
|
2943
|
|
|
2944 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
|
2945 "mp4 co64 atom adjustment");
|
|
|
2946
|
|
|
2947 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
|
2948 entry = (uint64_t *) data->pos;
|
|
|
2949 end = (uint64_t *) data->last;
|
|
|
2950
|
|
|
2951 while (entry < end) {
|
|
|
2952 offset = ngx_mp4_get_64value(entry);
|
|
|
2953 offset += adjustment;
|
|
|
2954 ngx_mp4_set_64value(entry, offset);
|
|
|
2955 entry++;
|
|
|
2956 }
|
|
|
2957 }
|
|
|
2958
|
|
|
2959
|
|
|
2960 static char *
|
|
|
2961 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2962 {
|
|
|
2963 ngx_http_core_loc_conf_t *clcf;
|
|
|
2964
|
|
|
2965 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
2966 clcf->handler = ngx_http_mp4_handler;
|
|
|
2967
|
|
|
2968 return NGX_CONF_OK;
|
|
|
2969 }
|
|
|
2970
|
|
|
2971
|
|
|
2972 static void *
|
|
|
2973 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
|
2974 {
|
|
|
2975 ngx_http_mp4_conf_t *conf;
|
|
|
2976
|
|
|
2977 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
|
2978 if (conf == NULL) {
|
|
|
2979 return NULL;
|
|
|
2980 }
|
|
|
2981
|
|
|
2982 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2983 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
2984
|
|
|
2985 return conf;
|
|
|
2986 }
|
|
|
2987
|
|
|
2988
|
|
|
2989 static char *
|
|
|
2990 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
2991 {
|
|
|
2992 ngx_http_mp4_conf_t *prev = parent;
|
|
|
2993 ngx_http_mp4_conf_t *conf = child;
|
|
|
2994
|
|
|
2995 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
|
2996 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
|
2997 10 * 1024 * 1024);
|
|
|
2998
|
|
|
2999 return NGX_CONF_OK;
|
|
|
3000 }
|
