61 static void parse_waveformatex(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)  in parse_waveformatex()  argument
68         par->bits_per_coded_sample = bps;  in parse_waveformatex()
69     par->channel_layout        = avio_rl32(pb); /* dwChannelMask */  in parse_waveformatex()
78         par->codec_tag = AV_RL32(subformat);  in parse_waveformatex()
79         par->codec_id  = ff_wav_codec_get_id(par->codec_tag,  in parse_waveformatex()
80                                              par->bits_per_coded_sample);  in parse_waveformatex()
82         par->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat);  in parse_waveformatex()
83         if (!par->codec_id)  in parse_waveformatex()
92                       AVCodecParameters *par, int size, int big_endian)  in ff_get_wav_header()  argument
102     par->codec_type  = AVMEDIA_TYPE_AUDIO;  in ff_get_wav_header()
106             par->channels    = avio_rl16(pb);  in ff_get_wav_header()
107             par->sample_rate = avio_rl32(pb);  in ff_get_wav_header()
109             par->block_align = avio_rl16(pb);  in ff_get_wav_header()
113         par->channels    = avio_rb16(pb);  in ff_get_wav_header()
114         par->sample_rate = avio_rb32(pb);  in ff_get_wav_header()
116         par->block_align = avio_rb16(pb);  in ff_get_wav_header()
119         par->bits_per_coded_sample = 8;  in ff_get_wav_header()
122             par->bits_per_coded_sample = avio_rl16(pb);  in ff_get_wav_header()
124             par->bits_per_coded_sample = avio_rb16(pb);  in ff_get_wav_header()
128         par->codec_tag = 0;  in ff_get_wav_header()
130         par->codec_tag = id;  in ff_get_wav_header()
131         par->codec_id  = ff_wav_codec_get_id(id,  in ff_get_wav_header()
132                                              par->bits_per_coded_sample);  in ff_get_wav_header()
143             parse_waveformatex(s, pb, par);  in ff_get_wav_header()
148             if (ff_get_extradata(s, par, pb, cbSize) < 0)  in ff_get_wav_header()
160         if (ff_get_extradata(s, par, pb, size) < 0)  in ff_get_wav_header()
162         nb_streams         = AV_RL16(par->extradata + 4);  in ff_get_wav_header()
163         par->sample_rate   = AV_RL32(par->extradata + 12);  in ff_get_wav_header()
164         par->channels      = 0;  in ff_get_wav_header()
169             par->channels += par->extradata[8 + i * 20 + 17];  in ff_get_wav_header()
172     par->bit_rate = bitrate;  in ff_get_wav_header()
174     if (par->sample_rate <= 0) {  in ff_get_wav_header()
176                "Invalid sample rate: %d\n", par->sample_rate);  in ff_get_wav_header()
179     if (par->codec_id == AV_CODEC_ID_AAC_LATM) {  in ff_get_wav_header()
182         par->channels    = 0;  in ff_get_wav_header()
183         par->sample_rate = 0;  in ff_get_wav_header()
186     if (par->codec_id == AV_CODEC_ID_ADPCM_G726 && par->sample_rate)  in ff_get_wav_header()
187         par->bits_per_coded_sample = par->bit_rate / par->sample_rate;  in ff_get_wav_header()