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[FFmpeg-devel] avcodec/alac: don't fail if channels aren't set during init() when extradata is valid

Message ID 20220729210816.267-1-jamrial@gmail.com
State Accepted
Commit 6ca16906439f689e4627b7cb4e6466bd45cc696f
Headers show
Series [FFmpeg-devel] avcodec/alac: don't fail if channels aren't set during init() when extradata is valid | expand

Checks

Context Check Description
andriy/make_x86 success Make finished
andriy/make_fate_x86 success Make fate finished

Commit Message

James Almer July 29, 2022, 9:08 p.m. UTC
The decoder is meant to use it as a fallback if the value in extradata is
invalid.

Regression since d199099be.

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/alac.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

Comments

Jan Ekström July 30, 2022, 9:41 a.m. UTC | #1
On Sat, Jul 30, 2022 at 12:09 AM James Almer <jamrial@gmail.com> wrote:
>
> The decoder is meant to use it as a fallback if the value in extradata is
> invalid.
>
> Regression since d199099be.
>

Had the person doing API client usage who reported this to me test the
patch, it fixes the issue.

LGTM.

Would probably be worth it to back-port this to release/5.1 .

Jan
Jean-Baptiste Kempf July 30, 2022, 10:40 a.m. UTC | #2
On Sat, 30 Jul 2022, at 11:41, Jan Ekström wrote:
> Had the person doing API client usage who reported this to me test the
> patch, it fixes the issue.
>
> LGTM.
>
> Would probably be worth it to back-port this to release/5.1 .

I agree.
James Almer July 30, 2022, 2:11 p.m. UTC | #3
On 7/30/2022 7:40 AM, Jean-Baptiste Kempf wrote:
> On Sat, 30 Jul 2022, at 11:41, Jan Ekström wrote:
>> Had the person doing API client usage who reported this to me test the
>> patch, it fixes the issue.
>>
>> LGTM.
>>
>> Would probably be worth it to back-port this to release/5.1 .
> 
> I agree.

Applied and backported, thanks.
diff mbox series

Patch

diff --git a/libavcodec/alac.c b/libavcodec/alac.c
index b232514169..8b87d78dd3 100644
--- a/libavcodec/alac.c
+++ b/libavcodec/alac.c
@@ -574,13 +574,15 @@  static av_cold int alac_decode_init(AVCodecContext * avctx)
     avctx->bits_per_raw_sample = alac->sample_size;
     avctx->sample_rate         = alac->sample_rate;
 
-    if (alac->channels < 1 || alac->channels > ALAC_MAX_CHANNELS) {
+    if (alac->channels < 1) {
         av_log(avctx, AV_LOG_WARNING, "Invalid channel count\n");
+        if (avctx->ch_layout.nb_channels < 1)
+            return AVERROR(EINVAL);
         alac->channels = avctx->ch_layout.nb_channels;
     }
-    if (avctx->ch_layout.nb_channels > ALAC_MAX_CHANNELS || avctx->ch_layout.nb_channels <= 0 ) {
+    if (alac->channels > ALAC_MAX_CHANNELS) {
         avpriv_report_missing_feature(avctx, "Channel count %d",
-                                      avctx->ch_layout.nb_channels);
+                                      alac->channels);
         return AVERROR_PATCHWELCOME;
     }
     av_channel_layout_uninit(&avctx->ch_layout);