59     AVCodecParameters *par;  in rsd_read_header()  local
68     par = st->codecpar;  in rsd_read_header()
69     par->codec_type = AVMEDIA_TYPE_AUDIO;  in rsd_read_header()
70     par->codec_tag  = avio_rl32(pb);  in rsd_read_header()
71     par->codec_id   = ff_codec_get_id(rsd_tags, par->codec_tag);  in rsd_read_header()
72     if (!par->codec_id) {  in rsd_read_header()
73         const char *tag_buf = av_fourcc2str(par->codec_tag);  in rsd_read_header()
75             if (par->codec_tag == rsd_unsupported_tags[i]) {  in rsd_read_header()
84     par->channels = avio_rl32(pb);  in rsd_read_header()
85     if (par->channels <= 0 || par->channels > INT_MAX / 36) {  in rsd_read_header()
86         av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", par->channels);  in rsd_read_header()
91     par->sample_rate = avio_rl32(pb);  in rsd_read_header()
92     if (!par->sample_rate)  in rsd_read_header()
97     switch (par->codec_id) {  in rsd_read_header()
99         par->block_align = 2048;  in rsd_read_header()
100         if ((ret = ff_alloc_extradata(par, 34)) < 0)  in rsd_read_header()
102         memset(par->extradata, 0, 34);  in rsd_read_header()
105         par->block_align = 16 * par->channels;  in rsd_read_header()
108         par->block_align = 20 * par->channels;  in rsd_read_header()
114         par->bits_per_coded_sample = 4;  in rsd_read_header()
115         par->block_align = 36 * par->channels;  in rsd_read_header()
123         if ((ret = ff_get_extradata(s, par, s->pb, 32)) < 0)  in rsd_read_header()
127         par->block_align = 8 * par->channels;  in rsd_read_header()
130         if ((ret = ff_alloc_extradata(st->codecpar, 32 * par->channels)) < 0)  in rsd_read_header()
133         for (i = 0; i < par->channels; i++) {  in rsd_read_header()
154             switch (par->codec_id) {  in rsd_read_header()
159                 st->duration = av_get_audio_frame_duration2(par, remaining - start);  in rsd_read_header()
162                 st->duration = (remaining - start) / (8 * par->channels) * 14;  in rsd_read_header()
166                 st->duration = (remaining - start) / 2 / par->channels;  in rsd_read_header()
171     if (par->codec_id == AV_CODEC_ID_XMA2) {  in rsd_read_header()
176     avpriv_set_pts_info(st, 64, 1, par->sample_rate);  in rsd_read_header()
183     AVCodecParameters *par = s->streams[0]->codecpar;  in rsd_read_packet()  local
191     if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||  in rsd_read_packet()
192         par->codec_id == AV_CODEC_ID_ADPCM_PSX     ||  in rsd_read_packet()
193         par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||  in rsd_read_packet()
194         par->codec_id == AV_CODEC_ID_XMA2) {  in rsd_read_packet()
195         ret = av_get_packet(s->pb, pkt, par->block_align);  in rsd_read_packet()
196     } else if (par->codec_tag == MKTAG('W','A','D','P') &&  in rsd_read_packet()
197                par->channels > 1) {  in rsd_read_packet()
200         ret = av_new_packet(pkt, par->block_align);  in rsd_read_packet()
204             for (ch = 0; ch < par->channels; ch++) {  in rsd_read_packet()
214     if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)  in rsd_read_packet()