diff options
Diffstat (limited to 'gst-libs/ext/libav/libavcodec/dcadec.c')
| -rw-r--r-- | gst-libs/ext/libav/libavcodec/dcadec.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/gst-libs/ext/libav/libavcodec/dcadec.c b/gst-libs/ext/libav/libavcodec/dcadec.c index 6c240ee..ce8660d 100644 --- a/gst-libs/ext/libav/libavcodec/dcadec.c +++ b/gst-libs/ext/libav/libavcodec/dcadec.c @@ -1856,6 +1856,16 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data, if (s->amode < 16) { avctx->channel_layout = dca_core_channel_layout[s->amode]; + if (s->prim_channels + !!s->lfe > 2 && + avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) { + /* + * Neither the core's auxiliary data nor our default tables contain + * downmix coefficients for the additional channel coded in the XCh + * extension, so when we're doing a Stereo downmix, don't decode it. + */ + s->xch_disable = 1; + } + #if FF_API_REQUEST_CHANNELS FF_DISABLE_DEPRECATION_WARNINGS if (s->xch_present && !s->xch_disable && @@ -1886,7 +1896,7 @@ FF_ENABLE_DEPRECATION_WARNINGS s->channel_order_tab[channels - 1 - !!s->lfe] < 0) return AVERROR_INVALIDDATA; - if (s->prim_channels + !!s->lfe > 2 && + if (num_core_channels + !!s->lfe > 2 && avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) { channels = 2; s->output = s->prim_channels == 2 ? s->amode : DCA_STEREO; @@ -1900,7 +1910,7 @@ FF_ENABLE_DEPRECATION_WARNINGS if (s->core_downmix && (s->core_downmix_amode == DCA_STEREO || s->core_downmix_amode == DCA_STEREO_TOTAL)) { int sign, code; - for (i = 0; i < s->prim_channels + !!s->lfe; i++) { + for (i = 0; i < num_core_channels + !!s->lfe; i++) { sign = s->core_downmix_codes[i][0] & 0x100 ? 1 : -1; code = s->core_downmix_codes[i][0] & 0x0FF; s->downmix_coef[i][0] = (!code ? 0.0f : @@ -1918,19 +1928,19 @@ FF_ENABLE_DEPRECATION_WARNINGS "Invalid channel mode %d\n", am); return AVERROR_INVALIDDATA; } - if (s->prim_channels + !!s->lfe > + if (num_core_channels + !!s->lfe > FF_ARRAY_ELEMS(dca_default_coeffs[0])) { avpriv_request_sample(s->avctx, "Downmixing %d channels", s->prim_channels + !!s->lfe); return AVERROR_PATCHWELCOME; } - for (i = 0; i < s->prim_channels + !!s->lfe; i++) { + for (i = 0; i < num_core_channels + !!s->lfe; i++) { s->downmix_coef[i][0] = dca_default_coeffs[am][i][0]; s->downmix_coef[i][1] = dca_default_coeffs[am][i][1]; } } av_dlog(s->avctx, "Stereo downmix coeffs:\n"); - for (i = 0; i < s->prim_channels + !!s->lfe; i++) { + for (i = 0; i < num_core_channels + !!s->lfe; i++) { av_dlog(s->avctx, "L, input channel %d = %f\n", i, s->downmix_coef[i][0]); av_dlog(s->avctx, "R, input channel %d = %f\n", i, |