/* channel config */
ctx->out_channels = ctx->channels;
- if (avctx->channels == 0) {
- avctx->channels = ctx->out_channels;
- } else if(ctx->out_channels < avctx->channels) {
- av_log(avctx, AV_LOG_ERROR, "Cannot upmix AC3 from %d to %d channels.\n",
- ctx->out_channels, avctx->channels);
- return -1;
- }
- if(avctx->channels == 2) {
- ctx->output_mode = AC3_CHMODE_STEREO;
- } else if(avctx->channels == 1) {
- ctx->output_mode = AC3_CHMODE_MONO;
- } else if(avctx->channels != ctx->out_channels) {
- av_log(avctx, AV_LOG_ERROR, "Cannot downmix AC3 from %d to %d channels.\n",
- ctx->out_channels, avctx->channels);
- return -1;
+ if (avctx->request_channels > 0 && avctx->request_channels <= 2 &&
+ avctx->request_channels < ctx->channels) {
+ ctx->out_channels = avctx->request_channels;
+ ctx->output_mode = avctx->request_channels == 1 ? AC3_CHMODE_MONO : AC3_CHMODE_STEREO;
}
- ctx->out_channels = avctx->channels;
+ avctx->channels = ctx->out_channels;
/* parse the audio blocks */
for (blk = 0; blk < NB_BLOCKS; blk++) {