static int decode_frame(FLACContext *s)
{
int bs_code, sr_code, bps_code, i;
- int ch_mode, bps, blocksize, samplerate;
+ int ch_mode, bps, blocksize, samplerate, channels;
GetBitContext *gb = &s->gb;
/* frame sync code */
/* channels and decorrelation */
ch_mode = get_bits(gb, 4);
if (ch_mode < FLAC_MAX_CHANNELS && s->channels == ch_mode+1) {
+ channels = ch_mode + 1;
ch_mode = FLAC_CHMODE_INDEPENDENT;
- } else if (ch_mode > FLAC_CHMODE_MID_SIDE || s->channels != 2) {
- av_log(s->avctx, AV_LOG_ERROR, "unsupported channel assignment %d (channels=%d)\n",
- ch_mode, s->channels);
+ } else if (ch_mode <= FLAC_CHMODE_MID_SIDE) {
+ channels = 2;
+ } else {
+ av_log(s->avctx, AV_LOG_ERROR, "invalid channel mode: %d\n", ch_mode);
+ return -1;
+ }
+ if (channels != s->channels) {
+ av_log(s->avctx, AV_LOG_ERROR, "switching channel layout mid-stream "
+ "is not supported\n");
return -1;
}