mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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267 lines
7.2 KiB
C
267 lines
7.2 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* This file:
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* Copyright (c) 2002-2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <avcodec.h>
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#include <string.h>
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#include "gstffmpegcodecmap.h"
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/* this macro makes a caps width fixed or unfixed width/height
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* properties depending on whether we've got a context.
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*
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* See below for why we use this.
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*/
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#ifdef G_HAVE_ISO_VARARGS
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#define GST_FF_VID_CAPS_NEW(mimetype, ...) \
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gst_caps_new_simple (mimetype, \
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"width", GST_TYPE_INT_RANGE, 16, 4096, \
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"height", GST_TYPE_INT_RANGE, 16, 4096, \
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"framerate", GST_TYPE_DOUBLE_RANGE, 0., G_MAXDOUBLE, \
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__VA_ARGS__)
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#elif defined(G_HAVE_GNUC_VARARGS)
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#define GST_FF_VID_CAPS_NEW(mimetype, props...) \
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gst_caps_new_simple (mimetype, \
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"width", GST_TYPE_INT_RANGE, 16, 4096, \
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"height", GST_TYPE_INT_RANGE, 16, 4096, \
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"framerate", GST_TYPE_DOUBLE_RANGE, 0., G_MAXDOUBLE, \
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##props, NULL)
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#else
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#error FIXME
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#endif
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/* Convert a FFMPEG Pixel Format and optional AVCodecContext
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* to a GstCaps. If the context is ommitted, no fixed values
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* for video/audio size will be included in the GstCaps
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*
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* See below for usefullness
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*/
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static GstCaps *
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gst_ffmpeg_pixfmt_to_caps (enum PixelFormat pix_fmt)
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{
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GstCaps *caps = NULL;
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int bpp = 0, depth = 0, endianness = 0;
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gulong g_mask = 0, r_mask = 0, b_mask = 0;
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guint32 fmt = 0;
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switch (pix_fmt) {
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case PIX_FMT_YUV420P:
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fmt = GST_MAKE_FOURCC ('I', '4', '2', '0');
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break;
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case PIX_FMT_YUV422:
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fmt = GST_MAKE_FOURCC ('Y', 'U', 'Y', '2');
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break;
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case PIX_FMT_RGB24:
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bpp = depth = 24;
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endianness = G_BIG_ENDIAN;
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r_mask = 0xff0000;
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g_mask = 0x00ff00;
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b_mask = 0x0000ff;
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break;
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case PIX_FMT_BGR24:
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bpp = depth = 24;
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endianness = G_BIG_ENDIAN;
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r_mask = 0x0000ff;
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g_mask = 0x00ff00;
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b_mask = 0xff0000;
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break;
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case PIX_FMT_YUV422P:
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fmt = GST_MAKE_FOURCC ('Y', '4', '2', 'B');
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break;
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case PIX_FMT_YUV444P:
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/* .. */
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break;
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case PIX_FMT_RGBA32:
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bpp = 32;
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depth = 24;
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endianness = G_BIG_ENDIAN;
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#if (G_BYTE_ORDER == G_BIG_ENDIAN)
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r_mask = 0x00ff0000;
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g_mask = 0x0000ff00;
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b_mask = 0x000000ff;
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#else
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r_mask = 0x0000ff00;
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g_mask = 0x00ff0000;
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b_mask = 0xff000000;
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#endif
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break;
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case PIX_FMT_YUV410P:
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fmt = GST_MAKE_FOURCC ('Y', 'U', 'V', '9');
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break;
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case PIX_FMT_YUV411P:
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fmt = GST_MAKE_FOURCC ('Y', '4', '1', 'B');
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break;
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case PIX_FMT_RGB565:
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bpp = depth = 16;
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endianness = G_BYTE_ORDER;
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r_mask = 0xf800;
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g_mask = 0x07e0;
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b_mask = 0x001f;
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break;
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case PIX_FMT_RGB555:
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bpp = 16;
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depth = 15;
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endianness = G_BYTE_ORDER;
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r_mask = 0x7c00;
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g_mask = 0x03e0;
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b_mask = 0x001f;
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break;
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default:
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/* give up ... */
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break;
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}
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if (bpp != 0) {
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caps = GST_FF_VID_CAPS_NEW ("video/x-raw-rgb",
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"bpp", G_TYPE_INT, bpp,
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"depth", G_TYPE_INT, depth,
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"red_mask", G_TYPE_INT, r_mask,
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"green_mask", G_TYPE_INT, g_mask,
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"blue_mask", G_TYPE_INT, b_mask,
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"endianness", G_TYPE_INT, endianness, NULL);
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} else if (fmt) {
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caps = GST_FF_VID_CAPS_NEW ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, fmt, NULL);
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}
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if (caps != NULL) {
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char *str = gst_caps_to_string (caps);
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GST_DEBUG ("caps for pix_fmt=%d: %s", pix_fmt, str);
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g_free (str);
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} else {
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GST_WARNING ("No caps found for pix_fmt=%d", pix_fmt);
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}
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return caps;
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}
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/* Convert a FFMPEG codec Type and optional AVCodecContext
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* to a GstCaps. If the context is ommitted, no fixed values
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* for video/audio size will be included in the GstCaps
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*
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* CodecType is primarily meant for uncompressed data GstCaps!
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*/
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GstCaps *
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gst_ffmpeg_pix_fmt_to_caps (void)
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{
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GstCaps *caps, *temp;
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enum PixelFormat i;
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caps = gst_caps_new_empty ();
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for (i = 0; i < PIX_FMT_NB; i++) {
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temp = gst_ffmpeg_pixfmt_to_caps (i);
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if (temp != NULL) {
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gst_caps_append (caps, temp);
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}
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}
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return caps;
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}
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/* Convert a GstCaps (video/raw) to a FFMPEG PixFmt
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* and other video properties in a AVCodecContext.
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*
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* For usefullness, see below
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*/
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enum PixelFormat
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gst_ffmpeg_caps_to_pix_fmt (const GstCaps * caps)
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{
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GstStructure *structure;
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enum PixelFormat pix_fmt = PIX_FMT_NB;
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g_return_val_if_fail (gst_caps_get_size (caps) == 1, PIX_FMT_NB);
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structure = gst_caps_get_structure (caps, 0);
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if (strcmp (gst_structure_get_name (structure), "video/x-raw-yuv") == 0) {
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guint32 fourcc;
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if (gst_structure_get_fourcc (structure, "format", &fourcc)) {
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switch (fourcc) {
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case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
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pix_fmt = PIX_FMT_YUV422;
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break;
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case GST_MAKE_FOURCC ('I', '4', '2', '0'):
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pix_fmt = PIX_FMT_YUV420P;
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break;
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case GST_MAKE_FOURCC ('Y', '4', '1', 'B'):
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pix_fmt = PIX_FMT_YUV411P;
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break;
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case GST_MAKE_FOURCC ('Y', '4', '2', 'B'):
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pix_fmt = PIX_FMT_YUV422P;
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break;
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case GST_MAKE_FOURCC ('Y', 'U', 'V', '9'):
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pix_fmt = PIX_FMT_YUV410P;
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break;
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#if 0
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case FIXME:
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pix_fmt = PIX_FMT_YUV444P;
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break;
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#endif
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}
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}
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} else if (strcmp (gst_structure_get_name (structure),
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"video/x-raw-rgb") == 0) {
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gint bpp = 0, rmask = 0, endianness = 0;
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if (gst_structure_get_int (structure, "bpp", &bpp) &&
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gst_structure_get_int (structure, "endianness", &endianness) &&
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gst_structure_get_int (structure, "red_mask", &rmask)) {
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switch (bpp) {
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case 32:
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#if (G_BYTE_ORDER == G_BIG_ENDIAN)
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if (rmask == 0x00ff0000)
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#else
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if (rmask == 0x0000ff00)
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#endif
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pix_fmt = PIX_FMT_RGBA32;
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break;
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case 24:
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if (rmask == 0x0000FF)
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pix_fmt = PIX_FMT_BGR24;
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else
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pix_fmt = PIX_FMT_RGB24;
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break;
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case 16:
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if (endianness == G_BYTE_ORDER)
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pix_fmt = PIX_FMT_RGB565;
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break;
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case 15:
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if (endianness == G_BYTE_ORDER)
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pix_fmt = PIX_FMT_RGB555;
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break;
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default:
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/* nothing */
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break;
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}
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}
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}
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return pix_fmt;
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}
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