frodovdr/vdr-plugin-softhddevice
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Code Issues Releases Wiki Activity

Support downmix of AC-3 to stero.

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This commit is contained in:
Johns 2012-02-21 22:24:28 +01:00
parent 5d8dea1b6b
commit 2f869884ba
4 changed files with 36 additions and 3 deletions
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1
ChangeLog
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@ -1,6 +1,7 @@
User johns
Date:
Support downmix of AC-3 to stero.
New audio PES packet parser.
Fix bug: Grabbing a JPG image fails while suspended.
Add support for hot keys.

5
README.txt
View File

@ -139,12 +139,17 @@ Setup: /etc/vdr/setup.conf
softhddevice.AudioDelay = 0
+n or -n ms
delay audio or delay video
softhddevice.AudioPassthrough = 0
0 = none, 1 = AC-3
for AC-3 the pass-through device is used.
softhddevice.AudioDownmix = 0
0 = none, 1 = downmix
downmix AC-3 to stero.
softhddevice.AutoCrop.Interval = 0
0 disables auto-crop
n each 'n' frames auto-crop is checked.

19
codec.c
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@ -628,6 +628,7 @@ static char CodecPassthroughAC3; ///< pass ac3 through
static const int CodecPassthroughAC3 = 0;
#endif
static char CodecDownmix; ///< enable ac-3 downmix
/**
** Allocate a new audio decoder context.
@ -678,6 +679,12 @@ void CodecAudioOpen(AudioDecoder * audio_decoder, const char *name,
if (!(audio_decoder->AudioCtx = avcodec_alloc_context3(audio_codec))) {
Fatal(_("codec: can't allocate audio codec context\n"));
}
if (CodecDownmix) {
audio_decoder->AudioCtx->request_channels = 2;
audio_decoder->AudioCtx->request_channel_layout =
AV_CH_LAYOUT_STEREO_DOWNMIX;
}
pthread_mutex_lock(&CodecLockMutex);
// open codec
#if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(53,5,0)
@ -748,6 +755,16 @@ void CodecSetAudioPassthrough(int mask)
(void)mask;
}
/**
** Set audio downmix.
**
** @param onoff enable/disable downmix.
*/
void CodecSetAudioDownmix(int onoff)
{
CodecDownmix = onoff;
}
/**
** Reorder audio frame.
**
@ -889,7 +906,6 @@ void CodecAudioDecodeOld(AudioDecoder * audio_decoder, const AVPacket * avpkt)
audio_decoder->PassthroughAC3 = CodecPassthroughAC3;
// FIXME: use swr_convert from swresample (only in ffmpeg!)
// FIXME: tell ac3 decoder to use downmix
if (audio_decoder->ReSample) {
audio_resample_close(audio_decoder->ReSample);
audio_decoder->ReSample = NULL;
@ -1118,7 +1134,6 @@ void CodecAudioDecode(AudioDecoder * audio_decoder, const AVPacket * avpkt)
audio_decoder->PassthroughAC3 = CodecPassthroughAC3;
// FIXME: use swr_convert from swresample (only in ffmpeg!)
// FIXME: tell ac3 decoder to use downmix
if (audio_decoder->ReSample) {
audio_resample_close(audio_decoder->ReSample);
audio_decoder->ReSample = NULL;

12
softhddevice.cpp
View File

@ -38,6 +38,7 @@ extern "C"
#include "video.h"
extern void AudioPoller(void);
extern void CodecSetAudioPassthrough(int);
extern void CodecSetAudioDownmix(int);
}
//////////////////////////////////////////////////////////////////////////////
@ -84,6 +85,7 @@ static int ConfigVideoScaling[RESOLUTIONS];
static int ConfigVideoAudioDelay; ///< config audio delay
static int ConfigAudioPassthrough; ///< config audio pass-through
static int ConfigAudioDownmix; ///< config audio downmix
static int ConfigAutoCropInterval; ///< auto crop detection interval
static int ConfigAutoCropDelay; ///< auto crop detection delay
@ -414,6 +416,7 @@ class cMenuSetupSoft:public cMenuSetupPage
int Sharpen[RESOLUTIONS];
int AudioDelay;
int AudioPassthrough;
int AudioDownmix;
int AutoCropInterval;
int AutoCropDelay;
int AutoCropTolerance;
@ -511,6 +514,9 @@ cMenuSetupSoft::cMenuSetupSoft(void)
AudioPassthrough = ConfigAudioPassthrough;
Add(new cMenuEditStraItem(tr("Audio pass-through"), &AudioPassthrough, 2,
passthrough));
AudioDownmix = ConfigAudioDownmix;
Add(new cMenuEditBoolItem(tr("Enable AC-3 downmix"), &AudioDownmix,
trVDR("no"), trVDR("yes")));
//
// auto-crop
//
@ -581,6 +587,8 @@ void cMenuSetupSoft::Store(void)
VideoSetAudioDelay(ConfigVideoAudioDelay);
SetupStore("AudioPassthrough", ConfigAudioPassthrough = AudioPassthrough);
CodecSetAudioPassthrough(ConfigAudioPassthrough);
SetupStore("AudioDownmix", ConfigAudioDownmix = AudioDownmix);
CodecSetAudioDownmix(ConfigAudioDownmix);
SetupStore("AutoCrop.Interval", ConfigAutoCropInterval = AutoCropInterval);
SetupStore("AutoCrop.Delay", ConfigAutoCropDelay = AutoCropDelay);
@ -1527,6 +1535,10 @@ bool cPluginSoftHdDevice::SetupParse(const char *name, const char *value)
CodecSetAudioPassthrough(ConfigAudioPassthrough = atoi(value));
return true;
}
if (!strcmp(name, "AudioDownmix")) {
CodecSetAudioDownmix(ConfigAudioDownmix = atoi(value));
return true;
}
if (!strcmp(name, "AutoCrop.Interval")) {
VideoSetAutoCrop(ConfigAutoCropInterval =