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annotate mrjunejune/generate_hls_sample.c @ 279:b3b547563ec7
Add Google connector service and agent wiki
Implement the C/Seobeo Google Drive and Gmail connector with encrypted OAuth storage, Zenbu authentication, browser testing, AI tool discovery, chunked HTTP decoding, and Bazel coverage. Consolidate repository guidance into progressive wiki documentation and enforce arena-first allocation for new first-party C code.
Co-authored-by: Copilot <[email protected]>
Copilot-Session: 84c338fd-0939-4bb3-b7f3-1062eb213e5d
| author | MrJuneJune <me@mrjunejune.com> |
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| date | Mon, 17 Aug 2026 22:22:36 -0700 |
| parents | 543df0fe7168 |
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| rev | line source |
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1 #include "third_party/ffmpeg/ffmpeg_cli.h" |
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2 |
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3 #include <dirent.h> |
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4 #include <errno.h> |
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5 #include <stdio.h> |
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6 #include <stdlib.h> |
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7 #include <string.h> |
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8 #include <sys/stat.h> |
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9 #include <unistd.h> |
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10 |
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11 static int remove_flat_directory(const char *directory) |
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12 { |
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13 DIR *entries = opendir(directory); |
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14 if (!entries) |
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15 return errno == ENOENT ? 0 : -1; |
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16 |
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17 struct dirent *entry; |
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18 while ((entry = readdir(entries)) != NULL) |
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19 { |
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20 if (strcmp(entry->d_name, ".") == 0 || |
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21 strcmp(entry->d_name, "..") == 0) |
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22 continue; |
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23 char path[1024]; |
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24 int length = snprintf(path, sizeof(path), "%s/%s", directory, entry->d_name); |
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25 if (length < 0 || (size_t)length >= sizeof(path) || unlink(path) != 0) |
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26 { |
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27 closedir(entries); |
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28 return -1; |
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29 } |
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30 } |
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31 closedir(entries); |
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32 return rmdir(directory); |
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33 } |
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34 |
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35 static int write_master_playlist(const char *directory) |
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36 { |
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37 char path[1024]; |
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38 int length = snprintf(path, sizeof(path), "%s/master.m3u8", directory); |
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39 if (length < 0 || (size_t)length >= sizeof(path)) |
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40 return -1; |
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41 |
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42 FILE *playlist = fopen(path, "wb"); |
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43 if (!playlist) |
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44 return -1; |
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45 const char *content = |
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46 "#EXTM3U\n" |
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47 "#EXT-X-VERSION:7\n" |
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48 "#EXT-X-STREAM-INF:BANDWIDTH=1200000,AVERAGE-BANDWIDTH=1000000," |
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49 "CODECS=\"avc1.4d401f,mp4a.40.2\"\n" |
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50 "h264-stream.m3u8\n" |
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51 "#EXT-X-STREAM-INF:BANDWIDTH=900000,AVERAGE-BANDWIDTH=750000," |
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52 "CODECS=\"vp09.00.10.08,opus\"\n" |
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53 "vp9-stream.m3u8\n"; |
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54 size_t content_length = strlen(content); |
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55 int result = fwrite(content, 1, content_length, playlist) == content_length |
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56 ? 0 |
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57 : -1; |
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58 fclose(playlist); |
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59 return result; |
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60 } |
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61 |
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62 static const char *workspace_path( |
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63 const char *path, |
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64 char *buffer, |
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65 size_t buffer_size) |
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66 { |
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67 const char *workspace = getenv("BUILD_WORKSPACE_DIRECTORY"); |
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68 if (!workspace || path[0] == '/') |
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69 return path; |
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70 int length = snprintf(buffer, buffer_size, "%s/%s", workspace, path); |
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71 return length < 0 || (size_t)length >= buffer_size ? NULL : buffer; |
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72 } |
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73 |
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74 int main(int argc, char **argv) |
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75 { |
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76 if (argc != 3) |
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77 { |
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78 fprintf(stderr, "Usage: %s <input.mp4> <output-directory>\n", argv[0]); |
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79 return 2; |
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80 } |
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81 |
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82 char final_buffer[1024]; |
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83 const char *final_directory = workspace_path( |
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84 argv[2], |
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85 final_buffer, |
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86 sizeof(final_buffer)); |
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87 if (!final_directory) |
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88 { |
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89 fprintf(stderr, "HLS output path is too long.\n"); |
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90 return 1; |
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91 } |
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92 |
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93 char stage_template[1100]; |
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94 int stage_length = snprintf( |
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95 stage_template, |
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96 sizeof(stage_template), |
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97 "%s.stage-XXXXXX", |
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98 final_directory); |
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99 if (stage_length < 0 || (size_t)stage_length >= sizeof(stage_template) || |
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100 !mkdtemp(stage_template)) |
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101 { |
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102 fprintf(stderr, "Unable to create the HLS staging directory.\n"); |
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103 return 1; |
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104 } |
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105 |
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106 Fmp4HlsOpts options = ffmpeg_fmp4_hls_opts_default(); |
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107 options.codec = FFMPEG_HLS_VP9_OPUS; |
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108 FfmpegResult result = ffmpeg_video_to_fmp4_hls( |
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109 argv[1], |
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110 stage_template, |
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111 "vp9", |
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112 &options); |
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113 if (result == FFMPEG_OK) |
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114 { |
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115 options.codec = FFMPEG_HLS_H264_AAC; |
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116 options.video_bitrate = 1200; |
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117 options.audio_bitrate = 128; |
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118 result = ffmpeg_video_to_fmp4_hls( |
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119 argv[1], |
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120 stage_template, |
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121 "h264", |
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122 &options); |
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123 } |
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124 if (result == FFMPEG_OK) |
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125 { |
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126 options.use_mpeg_ts = true; |
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127 result = ffmpeg_video_to_fmp4_hls( |
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128 argv[1], |
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129 stage_template, |
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130 "h264-ts", |
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131 &options); |
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132 } |
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133 if (result != FFMPEG_OK || write_master_playlist(stage_template) != 0) |
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134 { |
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135 fprintf(stderr, "%s\n", ffmpeg_last_error()); |
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136 remove_flat_directory(stage_template); |
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137 return 1; |
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138 } |
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139 |
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140 char backup_directory[1100]; |
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141 int backup_length = snprintf( |
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142 backup_directory, |
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143 sizeof(backup_directory), |
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144 "%s.backup", |
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145 final_directory); |
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146 if (backup_length < 0 || (size_t)backup_length >= sizeof(backup_directory)) |
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147 { |
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148 remove_flat_directory(stage_template); |
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149 return 1; |
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150 } |
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151 remove_flat_directory(backup_directory); |
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152 |
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153 bool had_previous = rename(final_directory, backup_directory) == 0; |
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154 if (!had_previous && errno != ENOENT) |
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155 { |
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156 remove_flat_directory(stage_template); |
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157 return 1; |
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158 } |
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159 if (rename(stage_template, final_directory) != 0) |
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160 { |
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161 if (had_previous) |
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162 rename(backup_directory, final_directory); |
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163 remove_flat_directory(stage_template); |
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164 return 1; |
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165 } |
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166 if (had_previous && remove_flat_directory(backup_directory) != 0) |
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167 { |
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168 fprintf(stderr, "Generated HLS sample, but could not remove its backup.\n"); |
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169 return 1; |
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170 } |
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171 |
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172 printf("Generated fMP4 and MPEG-TS HLS samples from %s in %s\n", argv[1], final_directory); |
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173 return 0; |
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174 } |