gstreamer/gst/ffmpegcolorspace/gstffmpegcodecmap.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* This file:
* Copyright (c) 2002-2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* 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 <gst/gst.h>
#include <avcodec.h>
#include <string.h>
#include "gstffmpegcodecmap.h"
/* this macro makes a caps width fixed or unfixed width/height
* properties depending on whether we've got a context.
*
* See below for why we use this.
*/
#define GST_FF_VID_CAPS_NEW(mimetype, ...) \
gst_caps_new_simple (mimetype, \
"width", GST_TYPE_INT_RANGE, 16, 4096, \
"height", GST_TYPE_INT_RANGE, 16, 4096, \
"framerate", GST_TYPE_DOUBLE_RANGE, 0., G_MAXDOUBLE, \
__VA_ARGS__)
/* Convert a FFMPEG Pixel Format and optional AVCodecContext
* to a GstCaps. If the context is ommitted, no fixed values
* for video/audio size will be included in the GstCaps
*
* See below for usefullness
*/
static GstCaps *
gst_ffmpeg_pixfmt_to_caps (enum PixelFormat pix_fmt)
{
GstCaps *caps = NULL;
int bpp = 0, depth = 0, endianness = 0;
gulong g_mask = 0, r_mask = 0, b_mask = 0;
guint32 fmt = 0;
switch (pix_fmt) {
case PIX_FMT_YUV420P:
fmt = GST_MAKE_FOURCC ('I', '4', '2', '0');
break;
case PIX_FMT_YUV422:
fmt = GST_MAKE_FOURCC ('Y', 'U', 'Y', '2');
break;
case PIX_FMT_RGB24:
bpp = depth = 24;
endianness = G_BIG_ENDIAN;
r_mask = 0xff0000;
g_mask = 0x00ff00;
b_mask = 0x0000ff;
break;
case PIX_FMT_BGR24:
bpp = depth = 24;
endianness = G_BIG_ENDIAN;
r_mask = 0x0000ff;
g_mask = 0x00ff00;
b_mask = 0xff0000;
break;
case PIX_FMT_YUV422P:
fmt = GST_MAKE_FOURCC ('Y', '4', '2', 'B');
break;
case PIX_FMT_YUV444P:
/* .. */
break;
case PIX_FMT_RGBA32:
bpp = 32;
depth = 24;
endianness = G_BIG_ENDIAN;
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
r_mask = 0x00ff0000;
g_mask = 0x0000ff00;
b_mask = 0x000000ff;
#else
r_mask = 0x0000ff00;
g_mask = 0x00ff0000;
b_mask = 0xff000000;
#endif
break;
case PIX_FMT_YUV410P:
fmt = GST_MAKE_FOURCC ('Y', 'U', 'V', '9');
break;
case PIX_FMT_YUV411P:
fmt = GST_MAKE_FOURCC ('Y', '4', '1', 'B');
break;
case PIX_FMT_RGB565:
bpp = depth = 16;
endianness = G_BYTE_ORDER;
r_mask = 0xf800;
g_mask = 0x07e0;
b_mask = 0x001f;
break;
case PIX_FMT_RGB555:
bpp = 16;
depth = 15;
endianness = G_BYTE_ORDER;
r_mask = 0x7c00;
g_mask = 0x03e0;
b_mask = 0x001f;
break;
default:
/* give up ... */
break;
}
if (bpp != 0) {
caps = GST_FF_VID_CAPS_NEW ("video/x-raw-rgb",
"bpp", G_TYPE_INT, bpp,
"depth", G_TYPE_INT, depth,
"red_mask", G_TYPE_INT, r_mask,
"green_mask", G_TYPE_INT, g_mask,
"blue_mask", G_TYPE_INT, b_mask,
"endianness", G_TYPE_INT, endianness, NULL);
} else if (fmt) {
caps = GST_FF_VID_CAPS_NEW ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, fmt, NULL);
}
if (caps != NULL) {
char *str = gst_caps_to_string (caps);
GST_DEBUG ("caps for pix_fmt=%d: %s", pix_fmt, str);
g_free (str);
} else {
GST_WARNING ("No caps found for pix_fmt=%d", pix_fmt);
}
return caps;
}
/* Convert a FFMPEG codec Type and optional AVCodecContext
* to a GstCaps. If the context is ommitted, no fixed values
* for video/audio size will be included in the GstCaps
*
* CodecType is primarily meant for uncompressed data GstCaps!
*/
GstCaps *
gst_ffmpeg_pix_fmt_to_caps (void)
{
GstCaps *caps, *temp;
enum PixelFormat i;
caps = gst_caps_new_empty ();
for (i = 0; i < PIX_FMT_NB; i++) {
temp = gst_ffmpeg_pixfmt_to_caps (i);
if (temp != NULL) {
gst_caps_append (caps, temp);
}
}
return caps;
}
/* Convert a GstCaps (video/raw) to a FFMPEG PixFmt
* and other video properties in a AVCodecContext.
*
* For usefullness, see below
*/
enum PixelFormat
gst_ffmpeg_caps_to_pix_fmt (const GstCaps * caps,
int *width, int *height, double *framerate)
{
GstStructure *structure;
enum PixelFormat pix_fmt = PIX_FMT_NB;
g_return_val_if_fail (gst_caps_get_size (caps) == 1, PIX_FMT_NB);
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", width);
gst_structure_get_int (structure, "height", height);
gst_structure_get_double (structure, "framerate", framerate);
if (strcmp (gst_structure_get_name (structure), "video/x-raw-yuv") == 0) {
guint32 fourcc;
if (gst_structure_get_fourcc (structure, "format", &fourcc)) {
switch (fourcc) {
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
pix_fmt = PIX_FMT_YUV422;
break;
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
pix_fmt = PIX_FMT_YUV420P;
break;
case GST_MAKE_FOURCC ('Y', '4', '1', 'B'):
pix_fmt = PIX_FMT_YUV411P;
break;
case GST_MAKE_FOURCC ('Y', '4', '2', 'B'):
pix_fmt = PIX_FMT_YUV422P;
break;
case GST_MAKE_FOURCC ('Y', 'U', 'V', '9'):
pix_fmt = PIX_FMT_YUV410P;
break;
#if 0
case FIXME:
pix_fmt = PIX_FMT_YUV444P;
break;
#endif
}
}
} else if (strcmp (gst_structure_get_name (structure),
"video/x-raw-rgb") == 0) {
gint bpp = 0, rmask = 0, endianness = 0;
if (gst_structure_get_int (structure, "bpp", &bpp) &&
gst_structure_get_int (structure, "endianness", &endianness) &&
gst_structure_get_int (structure, "red_mask", &rmask)) {
switch (bpp) {
case 32:
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
if (rmask == 0x00ff0000)
#else
if (rmask == 0x0000ff00)
#endif
pix_fmt = PIX_FMT_RGBA32;
break;
case 24:
if (rmask == 0x0000FF)
pix_fmt = PIX_FMT_BGR24;
else
pix_fmt = PIX_FMT_RGB24;
break;
case 16:
if (endianness == G_BYTE_ORDER)
pix_fmt = PIX_FMT_RGB565;
break;
case 15:
if (endianness == G_BYTE_ORDER)
pix_fmt = PIX_FMT_RGB555;
break;
default:
/* nothing */
break;
}
}
}
return pix_fmt;
}