gstffmpegutils: Add the files :)

2 files changed, 488 insertions, 0 deletions

diff --git a/ext/ffmpeg/gstffmpegutils.c b/ext/ffmpeg/gstffmpegutils.c
new file mode 100644
index 0000000..988cc1c
--- /dev/null
+++ b/ext/ffmpeg/gstffmpegutils.c
@@ -0,0 +1,398 @@
+/* GStreamer
+ * Copyright (c) 2009 Edward Hervey <bilboed@bilboed.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "gstffmpegutils.h"
+
+G_CONST_RETURN gchar *
+gst_ffmpeg_get_codecid_longname (enum CodecID codec_id)
+{
+  AVCodec *codec;
+  /* Let's use what ffmpeg can provide us */
+
+  if ((codec = avcodec_find_decoder (codec_id)) ||
+      (codec = avcodec_find_encoder (codec_id)))
+    return codec->long_name;
+  return NULL;
+}
+
+gint
+av_smp_format_depth (enum SampleFormat smp_fmt)
+{
+  gint depth = -1;
+  switch (smp_fmt) {
+    case SAMPLE_FMT_U8:
+      depth = 1;
+      break;
+    case SAMPLE_FMT_S16:
+      depth = 2;
+      break;
+    case SAMPLE_FMT_S32:
+    case SAMPLE_FMT_FLT:
+      depth = 4;
+      break;
+    case SAMPLE_FMT_DBL:
+      depth = 8;
+      break;
+    default:
+      GST_ERROR ("UNHANDLED SAMPLE FORMAT !");
+      break;
+  }
+  return depth;
+}
+
+
+/*
+ * Fill in pointers to memory in a AVPicture, where
+ * everything is aligned by 4 (as required by X).
+ * This is mostly a copy from imgconvert.c with some
+ * small changes.
+ */
+
+#define FF_COLOR_RGB      0     /* RGB color space */
+#define FF_COLOR_GRAY     1     /* gray color space */
+#define FF_COLOR_YUV      2     /* YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
+#define FF_COLOR_YUV_JPEG 3     /* YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
+
+#define FF_PIXEL_PLANAR   0     /* each channel has one component in AVPicture */
+#define FF_PIXEL_PACKED   1     /* only one components containing all the channels */
+#define FF_PIXEL_PALETTE  2     /* one components containing indexes for a palette */
+
+typedef struct PixFmtInfo
+{
+  const char *name;
+  uint8_t nb_channels;          /* number of channels (including alpha) */
+  uint8_t color_type;           /* color type (see FF_COLOR_xxx constants) */
+  uint8_t pixel_type;           /* pixel storage type (see FF_PIXEL_xxx constants) */
+  uint8_t is_alpha:1;           /* true if alpha can be specified */
+  uint8_t x_chroma_shift;       /* X chroma subsampling factor is 2 ^ shift */
+  uint8_t y_chroma_shift;       /* Y chroma subsampling factor is 2 ^ shift */
+  uint8_t depth;                /* bit depth of the color components */
+} PixFmtInfo;
+
+
+/* this table gives more information about formats */
+static PixFmtInfo pix_fmt_info[PIX_FMT_NB];
+void
+gst_ffmpeg_init_pix_fmt_info ()
+{
+  /* YUV formats */
+  pix_fmt_info[PIX_FMT_YUV420P].name = g_strdup ("yuv420p");
+  pix_fmt_info[PIX_FMT_YUV420P].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_YUV420P].color_type = FF_COLOR_YUV;
+  pix_fmt_info[PIX_FMT_YUV420P].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_YUV420P].depth = 8,
+      pix_fmt_info[PIX_FMT_YUV420P].x_chroma_shift = 1,
+      pix_fmt_info[PIX_FMT_YUV420P].y_chroma_shift = 1;
+
+  pix_fmt_info[PIX_FMT_YUV422P].name = g_strdup ("yuv422p");
+  pix_fmt_info[PIX_FMT_YUV422P].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_YUV422P].color_type = FF_COLOR_YUV;
+  pix_fmt_info[PIX_FMT_YUV422P].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_YUV422P].depth = 8;
+  pix_fmt_info[PIX_FMT_YUV422P].x_chroma_shift = 1;
+  pix_fmt_info[PIX_FMT_YUV422P].y_chroma_shift = 0;
+
+  pix_fmt_info[PIX_FMT_YUV444P].name = g_strdup ("yuv444p");
+  pix_fmt_info[PIX_FMT_YUV444P].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_YUV444P].color_type = FF_COLOR_YUV;
+  pix_fmt_info[PIX_FMT_YUV444P].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_YUV444P].depth = 8;
+  pix_fmt_info[PIX_FMT_YUV444P].x_chroma_shift = 0;
+  pix_fmt_info[PIX_FMT_YUV444P].y_chroma_shift = 0;
+
+  pix_fmt_info[PIX_FMT_YUYV422].name = g_strdup ("yuv422");
+  pix_fmt_info[PIX_FMT_YUYV422].nb_channels = 1;
+  pix_fmt_info[PIX_FMT_YUYV422].color_type = FF_COLOR_YUV;
+  pix_fmt_info[PIX_FMT_YUYV422].pixel_type = FF_PIXEL_PACKED;
+  pix_fmt_info[PIX_FMT_YUYV422].depth = 8;
+  pix_fmt_info[PIX_FMT_YUYV422].x_chroma_shift = 1;
+  pix_fmt_info[PIX_FMT_YUYV422].y_chroma_shift = 0;
+
+  pix_fmt_info[PIX_FMT_YUV410P].name = g_strdup ("yuv410p");
+  pix_fmt_info[PIX_FMT_YUV410P].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_YUV410P].color_type = FF_COLOR_YUV;
+  pix_fmt_info[PIX_FMT_YUV410P].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_YUV410P].depth = 8;
+  pix_fmt_info[PIX_FMT_YUV410P].x_chroma_shift = 2;
+  pix_fmt_info[PIX_FMT_YUV410P].y_chroma_shift = 2;
+
+  pix_fmt_info[PIX_FMT_YUV411P].name = g_strdup ("yuv411p");
+  pix_fmt_info[PIX_FMT_YUV411P].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_YUV411P].color_type = FF_COLOR_YUV;
+  pix_fmt_info[PIX_FMT_YUV411P].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_YUV411P].depth = 8;
+  pix_fmt_info[PIX_FMT_YUV411P].x_chroma_shift = 2;
+  pix_fmt_info[PIX_FMT_YUV411P].y_chroma_shift = 0;
+
+  /* JPEG YUV */
+  pix_fmt_info[PIX_FMT_YUVJ420P].name = g_strdup ("yuvj420p");
+  pix_fmt_info[PIX_FMT_YUVJ420P].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_YUVJ420P].color_type = FF_COLOR_YUV_JPEG;
+  pix_fmt_info[PIX_FMT_YUVJ420P].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_YUVJ420P].depth = 8;
+  pix_fmt_info[PIX_FMT_YUVJ420P].x_chroma_shift = 1;
+  pix_fmt_info[PIX_FMT_YUVJ420P].y_chroma_shift = 1;
+
+  pix_fmt_info[PIX_FMT_YUVJ422P].name = g_strdup ("yuvj422p");
+  pix_fmt_info[PIX_FMT_YUVJ422P].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_YUVJ422P].color_type = FF_COLOR_YUV_JPEG;
+  pix_fmt_info[PIX_FMT_YUVJ422P].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_YUVJ422P].depth = 8;
+  pix_fmt_info[PIX_FMT_YUVJ422P].x_chroma_shift = 1;
+  pix_fmt_info[PIX_FMT_YUVJ422P].y_chroma_shift = 0;
+
+  pix_fmt_info[PIX_FMT_YUVJ444P].name = g_strdup ("yuvj444p");
+  pix_fmt_info[PIX_FMT_YUVJ444P].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_YUVJ444P].color_type = FF_COLOR_YUV_JPEG;
+  pix_fmt_info[PIX_FMT_YUVJ444P].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_YUVJ444P].depth = 8;
+  pix_fmt_info[PIX_FMT_YUVJ444P].x_chroma_shift = 0;
+  pix_fmt_info[PIX_FMT_YUVJ444P].y_chroma_shift = 0;
+
+  /* RGB formats */
+  pix_fmt_info[PIX_FMT_RGB24].name = g_strdup ("rgb24");
+  pix_fmt_info[PIX_FMT_RGB24].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_RGB24].color_type = FF_COLOR_RGB;
+  pix_fmt_info[PIX_FMT_RGB24].pixel_type = FF_PIXEL_PACKED;
+  pix_fmt_info[PIX_FMT_RGB24].depth = 8;
+  pix_fmt_info[PIX_FMT_RGB24].x_chroma_shift = 0;
+  pix_fmt_info[PIX_FMT_RGB24].y_chroma_shift = 0;
+
+  pix_fmt_info[PIX_FMT_BGR24].name = g_strdup ("bgr24");
+  pix_fmt_info[PIX_FMT_BGR24].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_BGR24].color_type = FF_COLOR_RGB;
+  pix_fmt_info[PIX_FMT_BGR24].pixel_type = FF_PIXEL_PACKED;
+  pix_fmt_info[PIX_FMT_BGR24].depth = 8;
+  pix_fmt_info[PIX_FMT_BGR24].x_chroma_shift = 0;
+  pix_fmt_info[PIX_FMT_BGR24].y_chroma_shift = 0;
+
+  pix_fmt_info[PIX_FMT_RGB32].name = g_strdup ("rgba32");
+  pix_fmt_info[PIX_FMT_RGB32].nb_channels = 4;
+  pix_fmt_info[PIX_FMT_RGB32].is_alpha = 1;
+  pix_fmt_info[PIX_FMT_RGB32].color_type = FF_COLOR_RGB;
+  pix_fmt_info[PIX_FMT_RGB32].pixel_type = FF_PIXEL_PACKED;
+  pix_fmt_info[PIX_FMT_RGB32].depth = 8;
+  pix_fmt_info[PIX_FMT_RGB32].x_chroma_shift = 0;
+  pix_fmt_info[PIX_FMT_RGB32].y_chroma_shift = 0;
+
+  pix_fmt_info[PIX_FMT_RGB565].name = g_strdup ("rgb565");
+  pix_fmt_info[PIX_FMT_RGB565].nb_channels = 3;
+  pix_fmt_info[PIX_FMT_RGB565].color_type = FF_COLOR_RGB;
+  pix_fmt_info[PIX_FMT_RGB565].pixel_type = FF_PIXEL_PACKED;
+  pix_fmt_info[PIX_FMT_RGB565].depth = 5;
+  pix_fmt_info[PIX_FMT_RGB565].x_chroma_shift = 0;
+  pix_fmt_info[PIX_FMT_RGB565].y_chroma_shift = 0;
+
+  pix_fmt_info[PIX_FMT_RGB555].name = g_strdup ("rgb555");
+  pix_fmt_info[PIX_FMT_RGB555].nb_channels = 4;
+  pix_fmt_info[PIX_FMT_RGB555].is_alpha = 1;
+  pix_fmt_info[PIX_FMT_RGB555].color_type = FF_COLOR_RGB;
+  pix_fmt_info[PIX_FMT_RGB555].pixel_type = FF_PIXEL_PACKED;
+  pix_fmt_info[PIX_FMT_RGB555].depth = 5;
+  pix_fmt_info[PIX_FMT_RGB555].x_chroma_shift = 0;
+  pix_fmt_info[PIX_FMT_RGB555].y_chroma_shift = 0;
+
+  /* gray / mono formats */
+  pix_fmt_info[PIX_FMT_GRAY8].name = g_strdup ("gray");
+  pix_fmt_info[PIX_FMT_GRAY8].nb_channels = 1;
+  pix_fmt_info[PIX_FMT_GRAY8].color_type = FF_COLOR_GRAY;
+  pix_fmt_info[PIX_FMT_GRAY8].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_GRAY8].depth = 8;
+
+  pix_fmt_info[PIX_FMT_MONOWHITE].name = g_strdup ("monow");
+  pix_fmt_info[PIX_FMT_MONOWHITE].nb_channels = 1;
+  pix_fmt_info[PIX_FMT_MONOWHITE].color_type = FF_COLOR_GRAY;
+  pix_fmt_info[PIX_FMT_MONOWHITE].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_MONOWHITE].depth = 1;
+
+  pix_fmt_info[PIX_FMT_MONOBLACK].name = g_strdup ("monob");
+  pix_fmt_info[PIX_FMT_MONOBLACK].nb_channels = 1;
+  pix_fmt_info[PIX_FMT_MONOBLACK].color_type = FF_COLOR_GRAY;
+  pix_fmt_info[PIX_FMT_MONOBLACK].pixel_type = FF_PIXEL_PLANAR;
+  pix_fmt_info[PIX_FMT_MONOBLACK].depth = 1;
+
+  /* paletted formats */
+  pix_fmt_info[PIX_FMT_PAL8].name = g_strdup ("pal8");
+  pix_fmt_info[PIX_FMT_PAL8].nb_channels = 4;
+  pix_fmt_info[PIX_FMT_PAL8].is_alpha = 1;
+  pix_fmt_info[PIX_FMT_PAL8].color_type = FF_COLOR_RGB;
+  pix_fmt_info[PIX_FMT_PAL8].pixel_type = FF_PIXEL_PALETTE;
+  pix_fmt_info[PIX_FMT_PAL8].depth = 8;
+};
+
+int
+gst_ffmpeg_avpicture_get_size (int pix_fmt, int width, int height)
+{
+  AVPicture dummy_pict;
+
+  return gst_ffmpeg_avpicture_fill (&dummy_pict, NULL, pix_fmt, width, height);
+}
+
+#define GEN_MASK(x) ((1<<(x))-1)
+#define ROUND_UP_X(v,x) (((v) + GEN_MASK(x)) & ~GEN_MASK(x))
+#define ROUND_UP_2(x) ROUND_UP_X (x, 1)
+#define ROUND_UP_4(x) ROUND_UP_X (x, 2)
+#define ROUND_UP_8(x) ROUND_UP_X (x, 3)
+#define DIV_ROUND_UP_X(v,x) (((v) + GEN_MASK(x)) >> (x))
+
+int
+gst_ffmpeg_avpicture_fill (AVPicture * picture,
+    uint8_t * ptr, enum PixelFormat pix_fmt, int width, int height)
+{
+  int size, w2, h2, size2;
+  int stride, stride2;
+  PixFmtInfo *pinfo;
+
+  pinfo = &pix_fmt_info[pix_fmt];
+
+  switch (pix_fmt) {
+    case PIX_FMT_YUV420P:
+    case PIX_FMT_YUV422P:
+    case PIX_FMT_YUV444P:
+    case PIX_FMT_YUV410P:
+    case PIX_FMT_YUV411P:
+    case PIX_FMT_YUVJ420P:
+    case PIX_FMT_YUVJ422P:
+    case PIX_FMT_YUVJ444P:
+      stride = ROUND_UP_4 (width);
+      h2 = ROUND_UP_X (height, pinfo->y_chroma_shift);
+      size = stride * h2;
+      w2 = DIV_ROUND_UP_X (width, pinfo->x_chroma_shift);
+      stride2 = ROUND_UP_4 (w2);
+      h2 = DIV_ROUND_UP_X (height, pinfo->y_chroma_shift);
+      size2 = stride2 * h2;
+      picture->data[0] = ptr;
+      picture->data[1] = picture->data[0] + size;
+      picture->data[2] = picture->data[1] + size2;
+      picture->data[3] = NULL;
+      picture->linesize[0] = stride;
+      picture->linesize[1] = stride2;
+      picture->linesize[2] = stride2;
+      picture->linesize[3] = 0;
+      GST_DEBUG ("planes %d %d %d", 0, size, size + size2);
+      GST_DEBUG ("strides %d %d %d", stride, stride2, stride2);
+      return size + 2 * size2;
+    case PIX_FMT_RGB24:
+    case PIX_FMT_BGR24:
+      stride = ROUND_UP_4 (width * 3);
+      size = stride * height;
+      picture->data[0] = ptr;
+      picture->data[1] = NULL;
+      picture->data[2] = NULL;
+      picture->data[3] = NULL;
+      picture->linesize[0] = stride;
+      picture->linesize[1] = 0;
+      picture->linesize[2] = 0;
+      picture->linesize[3] = 0;
+      return size;
+      /*case PIX_FMT_AYUV4444:
+         case PIX_FMT_BGR32:
+         case PIX_FMT_BGRA32:
+         case PIX_FMT_RGB32: */
+    case PIX_FMT_RGB32:
+      stride = width * 4;
+      size = stride * height;
+      picture->data[0] = ptr;
+      picture->data[1] = NULL;
+      picture->data[2] = NULL;
+      picture->data[3] = NULL;
+      picture->linesize[0] = stride;
+      picture->linesize[1] = 0;
+      picture->linesize[2] = 0;
+      picture->linesize[3] = 0;
+      return size;
+    case PIX_FMT_RGB555:
+    case PIX_FMT_RGB565:
+    case PIX_FMT_YUYV422:
+    case PIX_FMT_UYVY422:
+      stride = ROUND_UP_4 (width * 2);
+      size = stride * height;
+      picture->data[0] = ptr;
+      picture->data[1] = NULL;
+      picture->data[2] = NULL;
+      picture->data[3] = NULL;
+      picture->linesize[0] = stride;
+      picture->linesize[1] = 0;
+      picture->linesize[2] = 0;
+      picture->linesize[3] = 0;
+      return size;
+    case PIX_FMT_UYYVYY411:
+      /* FIXME, probably not the right stride */
+      stride = ROUND_UP_4 (width);
+      size = stride * height;
+      picture->data[0] = ptr;
+      picture->data[1] = NULL;
+      picture->data[2] = NULL;
+      picture->data[3] = NULL;
+      picture->linesize[0] = width + width / 2;
+      picture->linesize[1] = 0;
+      picture->linesize[2] = 0;
+      picture->linesize[3] = 0;
+      return size + size / 2;
+    case PIX_FMT_GRAY8:
+      stride = ROUND_UP_4 (width);
+      size = stride * height;
+      picture->data[0] = ptr;
+      picture->data[1] = NULL;
+      picture->data[2] = NULL;
+      picture->data[3] = NULL;
+      picture->linesize[0] = stride;
+      picture->linesize[1] = 0;
+      picture->linesize[2] = 0;
+      picture->linesize[3] = 0;
+      return size;
+    case PIX_FMT_MONOWHITE:
+    case PIX_FMT_MONOBLACK:
+      stride = ROUND_UP_4 ((width + 7) >> 3);
+      size = stride * height;
+      picture->data[0] = ptr;
+      picture->data[1] = NULL;
+      picture->data[2] = NULL;
+      picture->data[3] = NULL;
+      picture->linesize[0] = stride;
+      picture->linesize[1] = 0;
+      picture->linesize[2] = 0;
+      picture->linesize[3] = 0;
+      return size;
+    case PIX_FMT_PAL8:
+      /* already forced to be with stride, so same result as other function */
+      stride = ROUND_UP_4 (width);
+      size = stride * height;
+      picture->data[0] = ptr;
+      picture->data[1] = ptr + size;    /* palette is stored here as 256 32 bit words */
+      picture->data[2] = NULL;
+      picture->data[3] = NULL;
+      picture->linesize[0] = stride;
+      picture->linesize[1] = 4;
+      picture->linesize[2] = 0;
+      picture->linesize[3] = 0;
+      return size + 256 * 4;
+    default:
+      picture->data[0] = NULL;
+      picture->data[1] = NULL;
+      picture->data[2] = NULL;
+      picture->data[3] = NULL;
+      return -1;
+  }
+
+  return 0;
+}
diff --git a/ext/ffmpeg/gstffmpegutils.h b/ext/ffmpeg/gstffmpegutils.h
new file mode 100644
index 0000000..96efd24
--- /dev/null
+++ b/ext/ffmpeg/gstffmpegutils.h
@@ -0,0 +1,90 @@
+/* GStreamer
+ * Copyright (C) <2009> Edward Hervey <bilboed@bilboed.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_FFMPEG_UTILS_H__
+#define __GST_FFMPEG_UTILS_H__
+
+#ifdef HAVE_FFMPEG_UNINSTALLED
+#include <avcodec.h>
+#else
+#include <libavcodec/avcodec.h>
+#endif
+#include <gst/gst.h>
+
+/*
+ *Get the size of an picture
+ */
+int
+gst_ffmpeg_avpicture_get_size (int pix_fmt, int width, int height);
+
+/*
+ * Fill in pointers in an AVPicture, aligned by 4 (required by X).
+ */
+
+int
+gst_ffmpeg_avpicture_fill (AVPicture * picture,
+                           uint8_t *   ptr,
+                           enum PixelFormat pix_fmt,
+                           int         width,
+                           int         height);
+
+/*
+ * Convert from/to a GStreamer <-> FFMpeg timestamp.
+ */
+static inline guint64
+gst_ffmpeg_time_ff_to_gst (gint64 pts, AVRational base)
+{
+  guint64 out;
+
+  if (pts == AV_NOPTS_VALUE){
+    out = GST_CLOCK_TIME_NONE;
+  } else {
+    AVRational bq = { 1, GST_SECOND };
+    out = av_rescale_q (pts, base, bq);
+  }
+
+  return out;
+}
+
+static inline gint64
+gst_ffmpeg_time_gst_to_ff (guint64 time, AVRational base)
+{
+  gint64 out;
+
+  if (!GST_CLOCK_TIME_IS_VALID (time) || base.num == 0) {
+    out = AV_NOPTS_VALUE;
+  } else {
+    AVRational bq = { 1, GST_SECOND };
+    out = av_rescale_q (time, bq, base);
+  }
+
+  return out;
+}
+
+void 
+gst_ffmpeg_init_pix_fmt_info();
+
+
+G_CONST_RETURN gchar *
+gst_ffmpeg_get_codecid_longname (enum CodecID codec_id);
+
+gint
+av_smp_format_depth(enum SampleFormat smp_fmt);
+
+#endif /* __GST_FFMPEG_UTILS_H__ */