42     AVCodecParameters *par;  in fsb_read_header()  local
57     par = st->codecpar;  in fsb_read_header()
58     par->codec_type  = AVMEDIA_TYPE_AUDIO;  in fsb_read_header()
59     par->codec_tag   = 0;  in fsb_read_header()
67         par->sample_rate = avio_rl32(pb);  in fsb_read_header()
68         if (par->sample_rate <= 0)  in fsb_read_header()
71         par->channels    = avio_rl16(pb);  in fsb_read_header()
72         if (!par->channels)  in fsb_read_header()
76             par->codec_id    = AV_CODEC_ID_PCM_S16LE;  in fsb_read_header()
77             par->block_align = 4096 * par->channels;  in fsb_read_header()
79             par->bits_per_coded_sample = 4;  in fsb_read_header()
80             par->codec_id    = AV_CODEC_ID_ADPCM_IMA_WAV;  in fsb_read_header()
81             par->block_align = 36 * par->channels;  in fsb_read_header()
83             par->codec_id    = AV_CODEC_ID_ADPCM_PSX;  in fsb_read_header()
84             par->block_align = 16 * par->channels;  in fsb_read_header()
86             par->codec_id    = AV_CODEC_ID_ADPCM_THP;  in fsb_read_header()
87             par->block_align = 8 * par->channels;  in fsb_read_header()
88             if (par->channels > INT_MAX / 32)  in fsb_read_header()
90             ret = ff_alloc_extradata(par, 32 * par->channels);  in fsb_read_header()
94             for (c = 0; c < par->channels; c++) {  in fsb_read_header()
95                 avio_read(pb, par->extradata + 32 * c, 32);  in fsb_read_header()
113             par->codec_id = AV_CODEC_ID_XMA2;  in fsb_read_header()
116             par->codec_id = AV_CODEC_ID_ADPCM_THP;  in fsb_read_header()
123         par->sample_rate = avio_rl32(pb);  in fsb_read_header()
124         if (par->sample_rate <= 0)  in fsb_read_header()
128         par->channels    = avio_rl16(pb);  in fsb_read_header()
129         if (!par->channels)  in fsb_read_header()
132         switch (par->codec_id) {  in fsb_read_header()
134             ret = ff_alloc_extradata(par, 34);  in fsb_read_header()
137             memset(par->extradata, 0, 34);  in fsb_read_header()
138             par->block_align = 2048;  in fsb_read_header()
141             if (par->channels > INT_MAX / 32)  in fsb_read_header()
143             ret = ff_alloc_extradata(par, 32 * par->channels);  in fsb_read_header()
147             for (c = 0; c < par->channels; c++) {  in fsb_read_header()
148                 avio_read(pb, par->extradata + 32 * c, 32);  in fsb_read_header()
151             par->block_align = 8 * par->channels;  in fsb_read_header()
161     avpriv_set_pts_info(st, 64, 1, par->sample_rate);  in fsb_read_header()
168     AVCodecParameters *par = s->streams[0]->codecpar;  in fsb_read_packet()  local
176     if (par->codec_id == AV_CODEC_ID_ADPCM_THP &&  in fsb_read_packet()
177                par->channels > 1) {  in fsb_read_packet()
180         ret = av_new_packet(pkt, par->block_align);  in fsb_read_packet()
184             for (ch = 0; ch < par->channels; ch++) {  in fsb_read_packet()
191         ret = av_get_packet(s->pb, pkt, par->block_align);  in fsb_read_packet()
194     if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)  in fsb_read_packet()