55 static int rsd_read_header(AVFormatContext *s)  in rsd_read_header()  argument
57     AVIOContext *pb = s->pb;  in rsd_read_header()
59     AVCodecParameters *par;  in rsd_read_header()  local
60     AVStream *st = avformat_new_stream(s, NULL);  in rsd_read_header()
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()
76                 avpriv_request_sample(s, "Codec tag: %s", tag_buf);  in rsd_read_header()
80         av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf);  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()
107             st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);  in rsd_read_header()
110         par->block_align = 20 * par->channels;  in rsd_read_header()
112             st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);  in rsd_read_header()
118         par->bits_per_coded_sample = 4;  in rsd_read_header()
119         par->block_align = 36 * par->channels;  in rsd_read_header()
121             st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);  in rsd_read_header()
129         if ((ret = ff_get_extradata(s, par, s->pb, 32)) < 0)  in rsd_read_header()
132             st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);  in rsd_read_header()
135         par->block_align = 8 * par->channels;  in rsd_read_header()
136         avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));  in rsd_read_header()
138         if ((ret = ff_alloc_extradata(st->codecpar, 32 * par->channels)) < 0)  in rsd_read_header()
141         for (i = 0; i < par->channels; i++) {  in rsd_read_header()
142             avio_read(s->pb, st->codecpar->extradata + 32 * i, 32);  in rsd_read_header()
143             avio_skip(s->pb, 8);  in rsd_read_header()
146             st->duration = (avio_size(pb) - start) / (8 * par->channels) * 14;  in rsd_read_header()
154             st->duration = (avio_size(pb) - start) / 2 / par->channels;  in rsd_read_header()
159     if (par->codec_id == AV_CODEC_ID_XMA2) {  in rsd_read_header()
164     avpriv_set_pts_info(st, 64, 1, par->sample_rate);  in rsd_read_header()
169 static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)  in rsd_read_packet()  argument
171     AVCodecParameters *par = s->streams[0]->codecpar;  in rsd_read_packet()  local
175     if (avio_feof(s->pb))  in rsd_read_packet()
178     pos = avio_tell(s->pb);  in rsd_read_packet()
179     if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||  in rsd_read_packet()
180         par->codec_id == AV_CODEC_ID_ADPCM_PSX     ||  in rsd_read_packet()
181         par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||  in rsd_read_packet()
182         par->codec_id == AV_CODEC_ID_XMA2) {  in rsd_read_packet()
183         ret = av_get_packet(s->pb, pkt, par->block_align);  in rsd_read_packet()
184     } else if (par->codec_tag == MKTAG('W','A','D','P') &&  in rsd_read_packet()
185                par->channels > 1) {  in rsd_read_packet()
188         ret = av_new_packet(pkt, par->block_align);  in rsd_read_packet()
192             for (ch = 0; ch < par->channels; ch++) {  in rsd_read_packet()
193                 pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);  in rsd_read_packet()
194                 pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);  in rsd_read_packet()
199         ret = av_get_packet(s->pb, pkt, size);  in rsd_read_packet()
202     if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)  in rsd_read_packet()