Ffmeg does no Stereo Downmix for Codec AAV LATM

Do Downmix after decoding

Makefile

@@ -24,7 +24,7 @@ DRM ?= 0
 
 # use libplacebo -
 # available for all decoders but for DRM you need LIBPLACEBO_GL
-LIBPLACEBO ?= 1
+LIBPLACEBO ?= 0
 LIBPLACEBO_GL ?= 0
 
 # use YADIF deint - only available with cuvid
@@ -35,7 +35,6 @@ YADIF = 1
 
 CONFIG := -DDEBUG 		# remove '#' to enable debug output
 
-
 #--------------------- no more config needed past this point--------------------------------
 
 # sanitize selections --------
@@ -159,29 +158,29 @@ endif
 
 ifeq ($(LIBPLACEBO_GL),1)
 CONFIG += -DPLACEBO_GL -DPLACEBO
-LIBS += -lepoxy
-LIBS += -lplacebo
+_CFLAGS += $(shell pkg-config --cflags libplacebo)
+LIBS += $(shell pkg-config --libs epoxy libplacebo)
 else
-LIBS += -lEGL
+LIBS += $(shell pkg-config --libs egl)
 endif
 
 ifeq ($(LIBPLACEBO),1)
 CONFIG += -DPLACEBO
-LIBS += -lEGL
-LIBS += -lplacebo
+_CFLAGS += $(shell pkg-config --cflags libplacebo)
+LIBS += $(shell pkg-config --libs egl libplacebo)
 endif
 
 ifeq ($(DRM),1)
 PLUGIN = softhddrm
 CONFIG += -DUSE_DRM -DVAAPI
 _CFLAGS += $(shell pkg-config --cflags libdrm)
-LIBS += -lgbm -ldrm -lEGL
+LIBS += $(shell pkg-config --libs egl gbm libdrm)
 endif
 
 ifeq ($(CUVID),1)
 #CONFIG += -DUSE_PIP			# PIP support
 CONFIG += -DCUVID			# enable CUVID decoder
-LIBS += -lEGL -lGL
+LIBS += $(shell pkg-config --libs egl gl)
 ifeq ($(YADIF),1)
 CONFIG += -DYADIF			# Yadif only with CUVID
 endif
@@ -274,6 +273,7 @@ LIBS += -lcuda -lnvcuvid
 endif
 
 LIBS += -lGLEW -lGLU  -ldl -lglut
+#LIBS += -ldl $(shell pkg-config --libs glew glu glut)
 
 ### Includes and Defines (add further entries here):
 

codec.c

@@ -717,7 +717,15 @@ void CodecAudioOpen(AudioDecoder *audio_decoder, int codec_id) {
     }
 
     if (CodecDownmix) {
+#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(53,61,100)
+	    audio_decoder->AudioCtx->request_channels = 2;
+#endif
+#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(59,24,100)
 	    audio_decoder->AudioCtx->request_channel_layout = AV_CH_LAYOUT_STEREO;
+#else
+        AVChannelLayout dmlayout = AV_CHANNEL_LAYOUT_STEREO;
+        av_opt_set_chlayout(audio_decoder->AudioCtx->priv_data, "downmix", &dmlayout, 0);
+#endif
     }
     pthread_mutex_lock(&CodecLockMutex);
     // open codec
@@ -896,6 +904,10 @@ static int CodecAudioUpdateHelper(AudioDecoder *audio_decoder, int *passthrough)
         audio_decoder->SpdifCount = 0;
         *passthrough = 1;
     }
+    
+    if (audio_decoder->HwChannels > 2 && CodecDownmix) {
+        audio_decoder->HwChannels = 2;
+    }
     // channels/sample-rate not support?
     if ((err = AudioSetup(&audio_decoder->HwSampleRate, &audio_decoder->HwChannels, *passthrough))) {
 
@@ -1161,14 +1173,43 @@ static void CodecAudioUpdateFormat(AudioDecoder *audio_decoder) {
     }
 #endif
 
-    audio_decoder->Resample = swr_alloc_set_opts(audio_decoder->Resample, audio_ctx->channel_layout, AV_SAMPLE_FMT_S16,
-                                                 audio_decoder->HwSampleRate, audio_ctx->channel_layout,
-                                                 audio_ctx->sample_fmt, audio_ctx->sample_rate, 0, NULL);
+#if LIBSWRESAMPLE_VERSION_INT < AV_VERSION_INT(4,5,100)
+    if (audio_decoder->Channels > 2 && CodecDownmix) { 
+        audio_decoder->Resample = swr_alloc_set_opts(audio_decoder->Resample, 
+                                    AV_CH_LAYOUT_STEREO, AV_SAMPLE_FMT_S16, audio_decoder->HwSampleRate,
+	                                audio_ctx->channel_layout, audio_ctx->sample_fmt,audio_ctx->sample_rate,
+                                    0, NULL);
+    } else {
+        audio_decoder->Resample = swr_alloc_set_opts(audio_decoder->Resample, audio_ctx->channel_layout,
+	                                            AV_SAMPLE_FMT_S16, audio_decoder->HwSampleRate,
+	                                            audio_ctx->channel_layout, audio_ctx->sample_fmt,
+                                                audio_ctx->sample_rate, 0, NULL);
+    }
+#else
+    if (audio_decoder->Channels > 2 && CodecDownmix) {  // Codec does not Support Downmix
+    //printf("last ressort downmix Layout in %lx Lyout out: %llx \n",audio_ctx->channel_layout,AV_CH_LAYOUT_STEREO);
+        audio_decoder->Resample = swr_alloc();
+        av_opt_set_channel_layout(audio_decoder->Resample, "in_channel_layout",audio_ctx->channel_layout, 0);
+        av_opt_set_channel_layout(audio_decoder->Resample, "out_channel_layout", AV_CH_LAYOUT_STEREO,  0);
+        av_opt_set_int(audio_decoder->Resample, "in_sample_rate",     audio_ctx->sample_rate,                0);
+        av_opt_set_int(audio_decoder->Resample, "out_sample_rate",    audio_ctx->sample_rate,                0);
+        av_opt_set_sample_fmt(audio_decoder->Resample, "in_sample_fmt",  audio_ctx->sample_fmt, 0);
+        av_opt_set_sample_fmt(audio_decoder->Resample, "out_sample_fmt", AV_SAMPLE_FMT_S16,  0);
+    }
+    else {
+        swr_alloc_set_opts2(&audio_decoder->Resample, &audio_ctx->ch_layout,
+                            AV_SAMPLE_FMT_S16, audio_decoder->HwSampleRate,
+                            &audio_ctx->ch_layout, audio_ctx->sample_fmt,
+                            audio_ctx->sample_rate, 0, NULL);
+    }
+#endif
     if (audio_decoder->Resample) {
 	    swr_init(audio_decoder->Resample);
     } else {
 	    Error(_("codec/audio: can't setup resample\n"));
     }
+
+
 }
 
 /**
@@ -1220,6 +1261,7 @@ void CodecAudioDecode(AudioDecoder *audio_decoder, const AVPacket *avpkt) {
             if (CodecAudioPassthroughHelper(audio_decoder, avpkt)) {
                 return;
             }
+            
             if (audio_decoder->Resample) {
                 uint8_t outbuf[8192  * 2 * 8];
                 uint8_t *out[1];
@@ -1227,6 +1269,7 @@ void CodecAudioDecode(AudioDecoder *audio_decoder, const AVPacket *avpkt) {
                 out[0] = outbuf;
                 ret = swr_convert(audio_decoder->Resample, out, sizeof(outbuf) / (2 * audio_decoder->HwChannels),
                                   (const uint8_t **)frame->extended_data, frame->nb_samples);
+                                  
                 if (ret > 0) {
                     if (!(audio_decoder->Passthrough & CodecPCM)) {
                         CodecReorderAudioFrame((int16_t *)outbuf, ret * 2 * audio_decoder->HwChannels,

softhdcuvid.cpp

@@ -61,7 +61,7 @@ extern void ToggleLUT();
 /// vdr-plugin version number.
 /// Makefile extracts the version number for generating the file name
 /// for the distribution archive.
-static const char *const VERSION = "3.16"
+static const char *const VERSION = "3.17"
 #ifdef GIT_REV
                                    "-GIT" GIT_REV
 #endif