[gegl/video-rejuvenation] audio: make audiofragment be multichannel

[Øyvind Kolås <ok src gnome org>]

commit 7d4c0de65e706ae5afb4d1994f05e1643de99b5a
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Nov 18 18:14:19 2015 +0100

    audio: make audiofragment be multichannel

 gegl/property-types/gegl-audio.c |    2 ++
 gegl/property-types/gegl-audio.h |   14 +++++++++-----
 operations/external/ff-load.c    |   10 ++++------
 operations/external/ff-save.c    |   10 +++++-----
 4 files changed, 20 insertions(+), 16 deletions(-)
---
diff --git a/gegl/property-types/gegl-audio.c b/gegl/property-types/gegl-audio.c
index 9223c41..e005009 100644
--- a/gegl/property-types/gegl-audio.c
+++ b/gegl/property-types/gegl-audio.c
@@ -168,6 +168,8 @@ gegl_param_audio_finalize (GParamSpec *self)
       param_audio->default_audio = NULL;
     }
 
+  g_warning ("...\n");
+
   parent_class->finalize (self);
 }
 
diff --git a/gegl/property-types/gegl-audio.h b/gegl/property-types/gegl-audio.h
index 06ad66b..41b3b58 100644
--- a/gegl/property-types/gegl-audio.h
+++ b/gegl/property-types/gegl-audio.h
@@ -33,13 +33,17 @@ G_BEGIN_DECLS
 typedef struct _GeglAudioClass   GeglAudioClass;
 typedef struct _GeglAudioPrivate GeglAudioPrivate;
 
+#define GEGL_MAX_AUDIO_CHANNELS 6
+#define GEGL_MAX_AUDIO_SAMPLES  4800
+
 struct _GeglAudio
 {
-  GObject           parent_instance;
-  float left[4000];
-  float right[4000];
-  int samples;
-  int samplerate;
+  GObject parent_instance;
+  int   sample_rate;
+  int   samples;
+  int   channels;
+  int   channel_layout;/* unused - assumed channels = 1 is mono 2 stereo */
+  float data[GEGL_MAX_AUDIO_CHANNELS][GEGL_MAX_AUDIO_SAMPLES]; 
   GeglAudioPrivate *priv;
 };
 
diff --git a/operations/external/ff-load.c b/operations/external/ff-load.c
index c1a7864..7b3b0aa 100644
--- a/operations/external/ff-load.c
+++ b/operations/external/ff-load.c
@@ -83,8 +83,6 @@ typedef struct
   glong            prevframe;      /* previously decoded frame number */
   gdouble          prevpts;        /* timestamp in seconds of last decoded frame */
 
-
-
 } Priv;
 
 #define MAX_AUDIO_CHANNELS  6
@@ -638,17 +636,17 @@ process (GeglOperation       *operation,
 
        if (p->audio_stream && p->audio_stream->codec) // XXX: remove second clause
         {
-          o->audio->samplerate = p->audio_stream->codec->sample_rate;
+          o->audio->sample_rate = p->audio_stream->codec->sample_rate;
           o->audio->samples = samples_per_frame (o->frame,
-               o->frame_rate, o->audio->samplerate,
+               o->frame_rate, o->audio->sample_rate,
                &sample_start);
          decode_audio (operation, p->prevpts, p->prevpts + 5.0);
           {
             int i;
             for (i = 0; i < o->audio->samples; i++)
             {
-              get_sample_data (p, sample_start + i, &o->audio->left[i],
-                                  &o->audio->right[i]);
+              get_sample_data (p, sample_start + i, &o->audio->data[0][i],
+                                  &o->audio->data[1][i]);
             }
           }
         }
diff --git a/operations/external/ff-save.c b/operations/external/ff-save.c
index 9771b57..232c28e 100644
--- a/operations/external/ff-save.c
+++ b/operations/external/ff-save.c
@@ -265,11 +265,11 @@ open_audio (GeglProperties *o, AVFormatContext * oc, AVStream * st)
   {
     if (o->audio)
     {
-      if (o->audio->samplerate == 0)
+      if (o->audio->sample_rate == 0)
       {
-        o->audio->samplerate = 48000; // XXX: should skip adding audiostream instead
+        o->audio->sample_rate = 48000; // XXX: should skip adding audiostream instead
       }
-      p->audio_sample_rate = o->audio->samplerate;
+      p->audio_sample_rate = o->audio->sample_rate;
     }
   }
   c->sample_rate = p->audio_sample_rate;
@@ -343,8 +343,8 @@ write_audio_frame (GeglProperties *o, AVFormatContext * oc, AVStream * st)
     af->len = o->audio->samples;
     for (i = 0; i < af->len; i++)
       {
-        af->data[0][i] = o->audio->left[i];
-        af->data[1][i] = o->audio->right[i];
+        af->data[0][i] = o->audio->data[0][i];
+        af->data[1][i] = o->audio->data[1][i];
       }
     af->pos = p->audio_pos;
     p->audio_pos += af->len;