gstreamer/ext/ffmpeg/gstffmpegcolorspace.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* This file:
* Copyright (C) 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>
#ifdef HAVE_FFMPEG_UNINSTALLED
#include <avcodec.h>
#else
#include <ffmpeg/avcodec.h>
#endif
#include "gstffmpegcodecmap.h"
#define GST_TYPE_FFMPEGCSP \
(gst_ffmpegcsp_get_type())
#define GST_FFMPEGCSP(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGCSP,GstFFMpegCsp))
#define GST_FFMPEGCSP_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGCSP,GstFFMpegCsp))
#define GST_IS_FFMPEGCSP(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGCSP))
#define GST_IS_FFMPEGCSP_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGCSP))
typedef struct _GstFFMpegCsp GstFFMpegCsp;
typedef struct _GstFFMpegCspClass GstFFMpegCspClass;
struct _GstFFMpegCsp
{
GstElement element;
GstPad *sinkpad, *srcpad;
gint width, height;
gfloat fps;
enum PixelFormat from_pixfmt, to_pixfmt;
AVFrame *from_frame, *to_frame;
GstCaps *sinkcaps;
};
struct _GstFFMpegCspClass
{
GstElementClass parent_class;
};
/* elementfactory information */
static GstElementDetails ffmpegcsp_details = {
"FFMPEG Colorspace converter",
"Filter/Converter/Video",
"Converts video from one colorspace to another",
"Ronald Bultje <rbultje@ronald.bitfreak.net>",
};
/* Stereo signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
};
static GType gst_ffmpegcsp_get_type (void);
static void gst_ffmpegcsp_base_init (GstFFMpegCspClass * klass);
static void gst_ffmpegcsp_class_init (GstFFMpegCspClass * klass);
static void gst_ffmpegcsp_init (GstFFMpegCsp * space);
static void gst_ffmpegcsp_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_ffmpegcsp_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstPadLinkReturn
gst_ffmpegcsp_pad_link (GstPad * pad, const GstCaps * caps);
static void gst_ffmpegcsp_chain (GstPad * pad, GstData * data);
static GstElementStateReturn gst_ffmpegcsp_change_state (GstElement * element);
static GstPadTemplate *srctempl, *sinktempl;
static GstElementClass *parent_class = NULL;
/*static guint gst_ffmpegcsp_signals[LAST_SIGNAL] = { 0 }; */
static GstCaps *
gst_ffmpegcsp_caps_remove_format_info (GstCaps * caps)
{
int i;
GstStructure *structure;
GstCaps *rgbcaps;
for (i = 0; i < gst_caps_get_size (caps); i++) {
structure = gst_caps_get_structure (caps, i);
gst_structure_set_name (structure, "video/x-raw-yuv");
gst_structure_remove_field (structure, "format");
gst_structure_remove_field (structure, "endianness");
gst_structure_remove_field (structure, "depth");
gst_structure_remove_field (structure, "bpp");
gst_structure_remove_field (structure, "red_mask");
gst_structure_remove_field (structure, "green_mask");
gst_structure_remove_field (structure, "blue_mask");
}
gst_caps_do_simplify (caps);
rgbcaps = gst_caps_copy (caps);
for (i = 0; i < gst_caps_get_size (rgbcaps); i++) {
structure = gst_caps_get_structure (rgbcaps, i);
gst_structure_set_name (structure, "video/x-raw-rgb");
}
gst_caps_append (caps, rgbcaps);
return caps;
}
static GstCaps *
gst_ffmpegcsp_getcaps (GstPad * pad)
{
GstFFMpegCsp *space;
GstCaps *othercaps;
GstCaps *caps;
GstPad *otherpad;
space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
otherpad = (pad == space->srcpad) ? space->sinkpad : space->srcpad;
othercaps = gst_pad_get_allowed_caps (otherpad);
othercaps = gst_ffmpegcsp_caps_remove_format_info (othercaps);
caps = gst_caps_intersect (othercaps, gst_pad_get_pad_template_caps (pad));
gst_caps_free (othercaps);
return caps;
}
static GstPadLinkReturn
gst_ffmpegcsp_pad_link (GstPad * pad, const GstCaps * caps)
{
GstStructure *structure;
AVCodecContext *ctx;
GstFFMpegCsp *space;
const GstCaps *othercaps;
GstPad *otherpad;
GstPadLinkReturn ret;
int height, width;
double framerate;
space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
otherpad = (pad == space->srcpad) ? space->sinkpad : space->srcpad;
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);
/* FIXME attempt and/or check for passthru */
/* loop over all possibilities and select the first one we can convert and
* is accepted by the peer */
ctx = avcodec_alloc_context ();
ctx->width = width;
ctx->height = height;
ctx->pix_fmt = PIX_FMT_NB;
gst_ffmpeg_caps_with_codectype (CODEC_TYPE_VIDEO, caps, ctx);
if (ctx->pix_fmt == PIX_FMT_NB) {
av_free (ctx);
/* we disable ourself here */
if (pad == space->srcpad) {
space->to_pixfmt = PIX_FMT_NB;
} else {
space->from_pixfmt = PIX_FMT_NB;
}
return GST_PAD_LINK_REFUSED;
}
/* set the size on the otherpad */
othercaps = gst_pad_get_negotiated_caps (otherpad);
if (othercaps) {
GstCaps *caps = gst_caps_copy (othercaps);
gst_caps_set_simple (caps,
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
"framerate", G_TYPE_DOUBLE, framerate, NULL);
ret = gst_pad_try_set_caps (otherpad, caps);
if (GST_PAD_LINK_FAILED (ret)) {
return ret;
}
}
if (pad == space->srcpad) {
space->to_pixfmt = ctx->pix_fmt;
} else {
space->from_pixfmt = ctx->pix_fmt;
}
av_free (ctx);
if (space->from_frame)
av_free (space->from_frame);
if (space->to_frame)
av_free (space->to_frame);
space->width = width;
space->height = height;
space->from_frame = avcodec_alloc_frame ();
space->to_frame = avcodec_alloc_frame ();
return GST_PAD_LINK_OK;
}
static GType
gst_ffmpegcsp_get_type (void)
{
static GType ffmpegcsp_type = 0;
if (!ffmpegcsp_type) {
static const GTypeInfo ffmpegcsp_info = {
sizeof (GstFFMpegCspClass),
(GBaseInitFunc) gst_ffmpegcsp_base_init,
NULL,
(GClassInitFunc) gst_ffmpegcsp_class_init,
NULL,
NULL,
sizeof (GstFFMpegCsp),
0,
(GInstanceInitFunc) gst_ffmpegcsp_init,
};
ffmpegcsp_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstFFMpegCsp", &ffmpegcsp_info, 0);
}
return ffmpegcsp_type;
}
static void
gst_ffmpegcsp_base_init (GstFFMpegCspClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class, srctempl);
gst_element_class_add_pad_template (element_class, sinktempl);
gst_element_class_set_details (element_class, &ffmpegcsp_details);
}
static void
gst_ffmpegcsp_class_init (GstFFMpegCspClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->set_property = gst_ffmpegcsp_set_property;
gobject_class->get_property = gst_ffmpegcsp_get_property;
gstelement_class->change_state = gst_ffmpegcsp_change_state;
}
static void
gst_ffmpegcsp_init (GstFFMpegCsp * space)
{
space->sinkpad = gst_pad_new_from_template (sinktempl, "sink");
gst_pad_set_link_function (space->sinkpad, gst_ffmpegcsp_pad_link);
gst_pad_set_getcaps_function (space->sinkpad, gst_ffmpegcsp_getcaps);
gst_pad_set_chain_function (space->sinkpad, gst_ffmpegcsp_chain);
gst_element_add_pad (GST_ELEMENT (space), space->sinkpad);
space->srcpad = gst_pad_new_from_template (srctempl, "src");
gst_element_add_pad (GST_ELEMENT (space), space->srcpad);
gst_pad_set_link_function (space->srcpad, gst_ffmpegcsp_pad_link);
gst_pad_set_getcaps_function (space->srcpad, gst_ffmpegcsp_getcaps);
space->from_pixfmt = space->to_pixfmt = PIX_FMT_NB;
space->from_frame = space->to_frame = NULL;
}
static void
gst_ffmpegcsp_chain (GstPad * pad, GstData * data)
{
GstBuffer *inbuf = GST_BUFFER (data);
GstFFMpegCsp *space;
GstBuffer *outbuf = NULL;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (inbuf != NULL);
space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
g_return_if_fail (space != NULL);
g_return_if_fail (GST_IS_FFMPEGCSP (space));
if (space->from_pixfmt == PIX_FMT_NB || space->to_pixfmt == PIX_FMT_NB) {
GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL),
("attempting to convert colorspaces between unknown formats"));
gst_buffer_unref (inbuf);
return;
}
if (space->from_pixfmt == space->to_pixfmt) {
outbuf = inbuf;
} else {
/* use bufferpool here */
guint size = avpicture_get_size (space->to_pixfmt,
space->width,
space->height);
outbuf = gst_pad_alloc_buffer (space->srcpad, GST_BUFFER_OFFSET_NONE, size);
/* convert */
avpicture_fill ((AVPicture *) space->from_frame, GST_BUFFER_DATA (inbuf),
space->from_pixfmt, space->width, space->height);
avpicture_fill ((AVPicture *) space->to_frame, GST_BUFFER_DATA (outbuf),
space->to_pixfmt, space->width, space->height);
img_convert ((AVPicture *) space->to_frame, space->to_pixfmt,
(AVPicture *) space->from_frame, space->from_pixfmt,
space->width, space->height);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (inbuf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (inbuf);
gst_buffer_unref (inbuf);
}
gst_pad_push (space->srcpad, GST_DATA (outbuf));
}
static GstElementStateReturn
gst_ffmpegcsp_change_state (GstElement * element)
{
GstFFMpegCsp *space;
space = GST_FFMPEGCSP (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_PAUSED_TO_READY:
if (space->from_frame)
av_free (space->from_frame);
if (space->to_frame)
av_free (space->to_frame);
space->from_frame = NULL;
space->to_frame = NULL;
break;
}
if (parent_class->change_state)
return parent_class->change_state (element);
return GST_STATE_SUCCESS;
}
static void
gst_ffmpegcsp_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstFFMpegCsp *space;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_FFMPEGCSP (object));
space = GST_FFMPEGCSP (object);
switch (prop_id) {
default:
break;
}
}
static void
gst_ffmpegcsp_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstFFMpegCsp *space;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_FFMPEGCSP (object));
space = GST_FFMPEGCSP (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
gboolean
gst_ffmpegcsp_register (GstPlugin * plugin)
{
GstCaps *caps;
/* template caps */
caps = gst_ffmpeg_codectype_to_caps (CODEC_TYPE_VIDEO, NULL);
/* build templates */
srctempl = gst_pad_template_new ("src",
GST_PAD_SRC, GST_PAD_ALWAYS, gst_caps_copy (caps));
sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
return gst_element_register (plugin, "ffcolorspace",
GST_RANK_NONE, GST_TYPE_FFMPEGCSP);
}