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[gegl/video-rejuvenation: 1/30] add GeglAudio - for carrying audio of a video frame

commit 2d9db110e723a5b74d73e5561cede4536282d9d8
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Sep 30 16:05:07 2015 +0200

    add GeglAudio - for carrying audio of a video frame
    
    For now limited to holding 4000 samples of stereo floating point audio. Should
    be extended to handle up to 6 channels.

 gegl/Makefile.am                      |    1 +
 gegl/gegl-op.h                        |   31 +++++
 gegl/gegl-plugin.h                    |    2 +
 gegl/gegl-types.h                     |    1 +
 gegl/property-types/Makefile.am       |    2 +
 gegl/property-types/gegl-audio.c      |  227 +++++++++++++++++++++++++++++++++
 gegl/property-types/gegl-audio.h      |  100 +++++++++++++++
 gegl/property-types/gegl-paramspecs.c |    1 +
 operations/external/ff-load.c         |   11 +-
 9 files changed, 373 insertions(+), 3 deletions(-)
---
diff --git a/gegl/Makefile.am b/gegl/Makefile.am
index 4128504..683386e 100644
--- a/gegl/Makefile.am
+++ b/gegl/Makefile.am
@@ -66,6 +66,7 @@ GEGL_introspectable_headers = \
        process/gegl-processor.h                \
        property-types/gegl-paramspecs.h        \
        property-types/gegl-color.h             \
+       property-types/gegl-audio.h             \
        property-types/gegl-path.h              \
        property-types/gegl-curve.h
 
diff --git a/gegl/gegl-op.h b/gegl/gegl-op.h
index 6bd6913..06efa9a 100644
--- a/gegl/gegl-op.h
+++ b/gegl/gegl-op.h
@@ -268,6 +268,7 @@ gegl_module_register (GTypeModule *module)
 #define property_curve(name, label, def_val)      ITEM2(name,label,def_val,object)
 #define property_path(name, label, def_val)       ITEM2(name,label,def_val,object)
 #define property_color(name, label, def_val)      ITEM2(name,label,def_val,object)
+#define property_audio(name, label, def_val)      ITEM2(name,label,NULL,object)
 
 #define enum_start(enum_name)   typedef enum {
 #define enum_value(value, nick, name)    value ,
@@ -331,6 +332,7 @@ static GType enum_name ## _get_type (void)               \
 #undef property_seed
 #undef property_curve
 #undef property_color
+#undef property_audio
 #undef property_path
 #undef enum_start
 #undef enum_value
@@ -353,6 +355,7 @@ struct _GeglProperties
 #define property_object(name, label, def_val)          GObject    *name;
 #define property_curve(name, label, def_val)           GeglCurve  *name;
 #define property_color(name, label, def_val)           GeglColor  *name;
+#define property_audio(name, label, def_val)           GeglAudio  *name;
 #define property_path(name, label, def_val)            GeglPath   *name; gulong path_changed_handler;
 #define property_pointer(name, label, def_val)         gpointer    name;
 #define property_format(name, label, def_val)          gpointer    name;
@@ -375,6 +378,7 @@ struct _GeglProperties
 #undef property_seed
 #undef property_curve
 #undef property_color
+#undef property_audio
 #undef property_path
 };
 
@@ -397,6 +401,7 @@ enum
 #define property_object(name, label, def_val)     ITEM2(name,label,def_val,object)
 #define property_curve(name, label, def_val)      ITEM2(name,label,def_val,object)
 #define property_color(name, label, def_val)      ITEM2(name,label,def_val,object)
+#define property_audio(name, label, def_val)      ITEM2(name,label,def_val,object)
 #define property_path(name, label, def_val)       ITEM2(name,label,def_val,object)
 #define property_pointer(name, label, def_val)    ITEM(name,label,def_val,pointer)
 #define property_format(name, label, def_val)     ITEM(name,label,def_val,pointer)
@@ -443,6 +448,7 @@ get_property (GObject      *gobject,
 #undef property_seed
 #undef property_curve
 #undef property_color
+#undef property_audio
 #undef property_path
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);
@@ -511,6 +517,12 @@ set_property (GObject      *gobject,
          g_object_unref (properties->name);                           \
       properties->name = g_value_dup_object (value);                  \
       break;
+#define property_audio(name, label, def_val)                          \
+    case PROP_##name:                                                 \
+      if (properties->name != NULL)                                   \
+         g_object_unref (properties->name);                           \
+      properties->name = g_value_dup_object (value);                  \
+      break;
 #define property_path(name, label, def_val)                           \
     case PROP_##name:                                                 \
       if (properties->name != NULL)                                   \
@@ -562,6 +574,7 @@ set_property (GObject      *gobject,
 #undef property_pointer
 #undef property_curve
 #undef property_color
+#undef property_audio
 #undef property_path
 #undef property_format
 #undef property_enum
@@ -618,6 +631,12 @@ static void gegl_op_destroy_notify (gpointer data)
       g_object_unref (properties->name);            \
       properties->name = NULL;                      \
     }
+#define property_audio(name, label, def_val)       \
+  if (properties->name)                             \
+    {                                               \
+      g_object_unref (properties->name);            \
+      properties->name = NULL;                      \
+    }
 #define property_path(name, label, def_val)       \
   if (properties->name)                             \
     {                                               \
@@ -644,6 +663,7 @@ static void gegl_op_destroy_notify (gpointer data)
 #undef property_seed
 #undef property_curve
 #undef property_color
+#undef property_audio
 #undef property_path
 
   g_slice_free (GeglProperties, properties);
@@ -673,6 +693,9 @@ gegl_op_constructor (GType                  type,
 #define property_pointer(name, label, def_val)
 #define property_format(name, label, def_val)
 #define property_curve(name, label, def_val)
+#define property_audio(name, label, def_val)\
+    if (properties->name == NULL)                   \
+    {properties->name = gegl_audio_new();}
 #define property_color(name, label, def_val)\
     if (properties->name == NULL)                   \
     {properties->name = gegl_color_new(def_val?def_val:"black");}
@@ -697,6 +720,7 @@ gegl_op_constructor (GType                  type,
 #undef property_seed
 #undef property_curve
 #undef property_color
+#undef property_audio
 #undef property_path
 
   g_object_set_data_full (obj, "chant-data", obj, gegl_op_destroy_notify);
@@ -940,6 +964,12 @@ gegl_op_class_intern_init (gpointer klass)
        gegl_param_spec_color_from_string (#name, label, NULL, def_val, flags);\
      current_prop = PROP_##name ;
 
+#define property_audio(name, label, def_val) \
+    REGISTER_IF_ANY  \
+  }{ GParamSpec *pspec = \
+       gegl_param_spec_audio (#name, label, NULL, flags);\
+     current_prop = PROP_##name ;
+
 #define property_path(name, label, def_val) \
     REGISTER_IF_ANY  \
   }{ GParamSpec *pspec = \
@@ -989,6 +1019,7 @@ gegl_op_class_intern_init (gpointer klass)
 #undef property_path
 #undef property_curve
 #undef property_color
+#undef property_audio
 #undef property_object
 #undef property_format
 
diff --git a/gegl/gegl-plugin.h b/gegl/gegl-plugin.h
index 2c334d3..7ca428a 100644
--- a/gegl/gegl-plugin.h
+++ b/gegl/gegl-plugin.h
@@ -28,7 +28,9 @@
 #include <glib-object.h>
 #include <gmodule.h>
 #include <gegl.h>
+#include <gegl-types.h>
 #include <gegl-paramspecs.h>
+#include <gegl-audio.h>
 
 G_BEGIN_DECLS
 
diff --git a/gegl/gegl-types.h b/gegl/gegl-types.h
index 714bdd3..2c54f54 100644
--- a/gegl/gegl-types.h
+++ b/gegl/gegl-types.h
@@ -50,6 +50,7 @@ typedef struct _GeglSampler GeglSampler;
 typedef struct _GeglCurve   GeglCurve;
 typedef struct _GeglPath    GeglPath;
 typedef struct _GeglColor   GeglColor;
+typedef struct _GeglAudio   GeglAudio;
 
 typedef struct _GeglRectangle GeglRectangle;
 
diff --git a/gegl/property-types/Makefile.am b/gegl/property-types/Makefile.am
index 6e44158..1acd124 100644
--- a/gegl/property-types/Makefile.am
+++ b/gegl/property-types/Makefile.am
@@ -20,11 +20,13 @@ AM_CFLAGS = $(DEP_CFLAGS) $(BABL_CFLAGS)
 noinst_LTLIBRARIES = libpropertytypes.la
 
 libpropertytypes_la_SOURCES = \
+       gegl-audio.c \
        gegl-color.c \
        gegl-curve.c \
        gegl-path.c \
        gegl-paramspecs.c \
        \
+       gegl-audio.h            \
        gegl-color.h            \
        gegl-curve.h            \
        gegl-path.h             \
diff --git a/gegl/property-types/gegl-audio.c b/gegl/property-types/gegl-audio.c
new file mode 100644
index 0000000..9223c41
--- /dev/null
+++ b/gegl/property-types/gegl-audio.c
@@ -0,0 +1,227 @@
+/* This file is part of GEGL
+ *
+ * GEGL is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * GEGL is distributed in the hope that it will be useful,
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <glib-object.h>
+
+#include "gegl.h"
+#include "gegl-types-internal.h"
+#include "gegl-audio.h"
+
+enum
+{
+  PROP_0,
+  PROP_STRING
+};
+
+struct _GeglAudioPrivate
+{
+  int foo;
+};
+
+static void      set_property (GObject      *gobject,
+                               guint         prop_id,
+                               const GValue *value,
+                               GParamSpec   *pspec);
+static void      get_property (GObject    *gobject,
+                               guint       prop_id,
+                               GValue     *value,
+                               GParamSpec *pspec);
+
+G_DEFINE_TYPE (GeglAudio, gegl_audio, G_TYPE_OBJECT)
+
+static void
+gegl_audio_init (GeglAudio *self)
+{
+  self->priv = G_TYPE_INSTANCE_GET_PRIVATE ((self), GEGL_TYPE_AUDIO, GeglAudioPrivate);
+}
+
+static void
+gegl_audio_class_init (GeglAudioClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  gobject_class->set_property = set_property;
+  gobject_class->get_property = get_property;
+
+  g_object_class_install_property (gobject_class, PROP_STRING,
+                                   g_param_spec_string ("string",
+                                                        "String",
+                                                        "A String representation of the GeglAudio",
+                                                        "",
+                                                        G_PARAM_READWRITE));
+
+  g_type_class_add_private (klass, sizeof (GeglAudioPrivate));
+}
+
+static void
+set_property (GObject      *gobject,
+              guint         property_id,
+              const GValue *value,
+              GParamSpec   *pspec)
+{
+  //GeglAudio *audio = GEGL_AUDIO (gobject);
+
+  switch (property_id)
+    {
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);
+        break;
+    }
+}
+
+static void
+get_property (GObject    *gobject,
+              guint       property_id,
+              GValue     *value,
+              GParamSpec *pspec)
+{
+  //GeglAudio *audio = GEGL_AUDIO (gobject);
+
+  switch (property_id)
+    {
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);
+        break;
+    }
+}
+
+GeglAudio *
+gegl_audio_new (void)
+{
+  void *string = NULL;
+  if (string)
+    return g_object_new (GEGL_TYPE_AUDIO, "string", string, NULL);
+
+  return g_object_new (GEGL_TYPE_AUDIO, NULL);
+}
+
+GeglAudio *
+gegl_audio_duplicate (GeglAudio *audio)
+{
+  GeglAudio *new;
+
+  g_return_val_if_fail (GEGL_IS_AUDIO (audio), NULL);
+
+  new = g_object_new (GEGL_TYPE_AUDIO, NULL);
+
+  memcpy (new->priv, audio->priv, sizeof (GeglAudioPrivate));
+
+  return new;
+}
+
+/* --------------------------------------------------------------------------
+ * A GParamSpec class to describe behavior of GeglAudio as an object property
+ * follows.
+ * --------------------------------------------------------------------------
+ */
+
+#define GEGL_PARAM_AUDIO(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_PARAM_AUDIO, 
GeglParamAudio))
+#define GEGL_IS_PARAM_AUDIO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GEGL_TYPE_PARAM_AUDIO))
+
+typedef struct _GeglParamAudio GeglParamAudio;
+
+struct _GeglParamAudio
+{
+  GParamSpec parent_instance;
+
+  GeglAudio *default_audio;
+};
+
+static void
+gegl_param_audio_init (GParamSpec *self)
+{
+  GEGL_PARAM_AUDIO (self)->default_audio = NULL;
+}
+
+#if 0
+GeglAudio *
+gegl_param_spec_audio_get_default (GParamSpec *self)
+{
+  return GEGL_PARAM_AUDIO (self)->default_audio;
+}
+#endif
+
+static void
+gegl_param_audio_finalize (GParamSpec *self)
+{
+  GeglParamAudio  *param_audio  = GEGL_PARAM_AUDIO (self);
+  GParamSpecClass *parent_class = g_type_class_peek (g_type_parent (GEGL_TYPE_PARAM_AUDIO));
+
+  if (param_audio->default_audio)
+    {
+      g_object_unref (param_audio->default_audio);
+      param_audio->default_audio = NULL;
+    }
+
+  parent_class->finalize (self);
+}
+
+static void
+gegl_param_audio_set_default (GParamSpec *param_spec,
+                              GValue     *value)
+{
+  GeglParamAudio *gegl_audio = GEGL_PARAM_AUDIO (param_spec);
+
+  if (gegl_audio->default_audio)
+    g_value_take_object (value, gegl_audio_duplicate (gegl_audio->default_audio));
+}
+
+GType
+gegl_param_audio_get_type (void)
+{
+  static GType param_audio_type = 0;
+
+  if (G_UNLIKELY (param_audio_type == 0))
+    {
+      static GParamSpecTypeInfo param_audio_type_info = {
+        sizeof (GeglParamAudio),
+        0,
+        gegl_param_audio_init,
+        0,
+        gegl_param_audio_finalize,
+        gegl_param_audio_set_default,
+        NULL,
+        NULL
+      };
+      param_audio_type_info.value_type = GEGL_TYPE_AUDIO;
+
+      param_audio_type = g_param_type_register_static ("GeglParamAudio",
+                                                       &param_audio_type_info);
+    }
+
+  return param_audio_type;
+}
+
+GParamSpec *
+gegl_param_spec_audio (const gchar *name,
+                       const gchar *nick,
+                       const gchar *blurb,
+           //            GeglAudio   *default_audio,
+                       GParamFlags  flags)
+{
+  GeglParamAudio *param_audio;
+
+  param_audio = g_param_spec_internal (GEGL_TYPE_PARAM_AUDIO,
+                                       name, nick, blurb, flags);
+
+  //param_audio->default_audio = default_audio;
+  //if (default_audio)
+  //  g_object_ref (default_audio);
+
+  return G_PARAM_SPEC (param_audio);
+}
diff --git a/gegl/property-types/gegl-audio.h b/gegl/property-types/gegl-audio.h
new file mode 100644
index 0000000..06ad66b
--- /dev/null
+++ b/gegl/property-types/gegl-audio.h
@@ -0,0 +1,100 @@
+/* This file is part of GEGL
+ *
+ * GEGL is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * GEGL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2006 Martin Nordholts <enselic hotmail com>
+ */
+
+#ifndef __GEGL_AUDIO_H__
+#define __GEGL_AUDIO_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define GEGL_TYPE_AUDIO            (gegl_audio_get_type ())
+#define GEGL_AUDIO(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_AUDIO, GeglAudio))
+#define GEGL_AUDIO_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_AUDIO, GeglAudioClass))
+#define GEGL_IS_AUDIO(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_AUDIO))
+#define GEGL_IS_AUDIO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_AUDIO))
+#define GEGL_AUDIO_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_AUDIO, GeglAudioClass))
+
+typedef struct _GeglAudioClass   GeglAudioClass;
+typedef struct _GeglAudioPrivate GeglAudioPrivate;
+
+struct _GeglAudio
+{
+  GObject           parent_instance;
+  float left[4000];
+  float right[4000];
+  int samples;
+  int samplerate;
+  GeglAudioPrivate *priv;
+};
+
+struct _GeglAudioClass
+{
+  GObjectClass parent_class;
+};
+
+GType gegl_audio_get_type (void) G_GNUC_CONST;
+
+GeglAudio *  gegl_audio_new                    (void);
+
+/**
+ * gegl_audio_duplicate:
+ * @audio: the audio to duplicate.
+ *
+ * Creates a copy of @audio.
+ *
+ * Return value: (transfer full): A new copy of @audio.
+ */
+GeglAudio *  gegl_audio_duplicate              (GeglAudio   *audio);
+
+#define GEGL_TYPE_PARAM_AUDIO           (gegl_param_audio_get_type ())
+#define GEGL_IS_PARAM_SPEC_AUDIO(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), GEGL_TYPE_PARAM_AUDIO))
+
+GType        gegl_param_audio_get_type         (void) G_GNUC_CONST;
+
+/**
+ * gegl_param_spec_audio:
+ * @name: canonical name of the property specified
+ * @nick: nick name for the property specified
+ * @blurb: description of the property specified
+ * @flags: flags for the property specified
+ *
+ * Creates a new #GParamSpec instance specifying a #GeglAudio property.
+ *
+ * Returns: (transfer full): a newly created parameter specification
+ */
+GParamSpec * gegl_param_spec_audio             (const gchar *name,
+                                                const gchar *nick,
+                                                const gchar *blurb,
+                                                GParamFlags  flags);
+#if 0
+/**
+ * gegl_param_spec_audio_get_default:
+ * @self: a #GeglAudio #GParamSpec
+ *
+ * Get the default audio value of the param spec
+ *
+ * Returns: (transfer none): the default #GeglAudio
+ */
+GeglAudio *
+gegl_param_spec_audio_get_default (GParamSpec *self);
+#endif
+
+G_END_DECLS
+
+#endif /* __GEGL_AUDIO_H__ */
diff --git a/gegl/property-types/gegl-paramspecs.c b/gegl/property-types/gegl-paramspecs.c
index 8db15ee..3e26a26 100644
--- a/gegl/property-types/gegl-paramspecs.c
+++ b/gegl/property-types/gegl-paramspecs.c
@@ -28,6 +28,7 @@
 #include "gegl-types.h"
 #include <babl/babl.h>
 #include "gegl-color.h"
+#include "gegl-audio.h"
 #include "gegl-curve.h"
 #include "gegl-path.h"
 
diff --git a/operations/external/ff-load.c b/operations/external/ff-load.c
index aeb2eb3..e4d1a59 100644
--- a/operations/external/ff-load.c
+++ b/operations/external/ff-load.c
@@ -33,6 +33,8 @@ property_int (frames, _("frames"), 0)
    value_range (0, G_MAXINT)
    ui_range (0, 10000)
 
+property_audio (audio, _("audio"), 0)
+
 #else
 
 #define GEGL_OP_SOURCE
@@ -215,7 +217,6 @@ decode_frame (GeglOperation *operation,
   while (decodeframe <= frame)
     {
       int       got_picture = 0;
-
       do
         {
           int       decoded_bytes;
@@ -246,7 +247,7 @@ decode_frame (GeglOperation *operation,
               return -1;
             }
 
-          p->coded_buf += decoded_bytes;
+          p->coded_buf   += decoded_bytes;
           p->coded_bytes -= decoded_bytes;
         }
       while (!got_picture);
@@ -394,7 +395,11 @@ process (GeglOperation       *operation,
         gint    pxsize;
         gint    x,y;
 
-
+       o->audio->left[0]=23;
+       o->audio->right[0]=23;
+        o->audio->samplerate = 44100;
+        o->audio->samples = 1;
+       
         g_object_get (output, "px-size", &pxsize, NULL);
         buf = g_new (guchar, p->width * p->height * pxsize);
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