| 138 | } FLVContext; |
| 139 | |
| 140 | static int get_audio_flags(AVFormatContext *s, AVCodecParameters *par) |
| 141 | { |
| 142 | int flags = (par->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT |
| 143 | : FLV_SAMPLESSIZE_8BIT; |
| 144 | |
| 145 | if (par->codec_id == AV_CODEC_ID_AAC) // specs force these parameters |
| 146 | return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ | |
| 147 | FLV_SAMPLESSIZE_16BIT | FLV_STEREO; |
| 148 | if (par->codec_id == AV_CODEC_ID_OPUS || par->codec_id == AV_CODEC_ID_FLAC |
| 149 | || par->codec_id == AV_CODEC_ID_AC3 || par->codec_id == AV_CODEC_ID_EAC3) |
| 150 | return FLV_CODECID_EX_HEADER; // only needed for codec support check |
| 151 | else if (par->codec_id == AV_CODEC_ID_SPEEX) { |
| 152 | if (par->sample_rate != 16000) { |
| 153 | av_log(s, AV_LOG_ERROR, |
| 154 | "FLV only supports wideband (16kHz) Speex audio\n"); |
| 155 | return AVERROR(EINVAL); |
| 156 | } |
| 157 | if (par->ch_layout.nb_channels != 1) { |
| 158 | av_log(s, AV_LOG_ERROR, "FLV only supports mono Speex audio\n"); |
| 159 | return AVERROR(EINVAL); |
| 160 | } |
| 161 | return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT; |
| 162 | } else { |
| 163 | switch (par->sample_rate) { |
| 164 | case 48000: |
| 165 | // 48khz mp3 is stored with 44k1 samplerate identifier |
| 166 | if (par->codec_id == AV_CODEC_ID_MP3) { |
| 167 | flags |= FLV_SAMPLERATE_44100HZ; |
| 168 | break; |
| 169 | } else { |
| 170 | goto error; |
| 171 | } |
| 172 | case 44100: |
| 173 | flags |= FLV_SAMPLERATE_44100HZ; |
| 174 | break; |
| 175 | case 22050: |
| 176 | flags |= FLV_SAMPLERATE_22050HZ; |
| 177 | break; |
| 178 | case 11025: |
| 179 | flags |= FLV_SAMPLERATE_11025HZ; |
| 180 | break; |
| 181 | case 16000: // nellymoser only |
| 182 | case 8000: // nellymoser only |
| 183 | case 5512: // not MP3 |
| 184 | if (par->codec_id != AV_CODEC_ID_MP3) { |
| 185 | flags |= FLV_SAMPLERATE_SPECIAL; |
| 186 | break; |
| 187 | } |
| 188 | default: |
| 189 | error: |
| 190 | av_log(s, AV_LOG_ERROR, |
| 191 | "FLV does not support sample rate %d, " |
| 192 | "choose from (44100, 22050, 11025)\n", par->sample_rate); |
| 193 | return AVERROR(EINVAL); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | if (par->ch_layout.nb_channels > 1) |
no test coverage detected