gstreamer/ext/ffmpeg/gstffmpegcolorspace.c
Leif Johnson 579ca39de7 + checking in plugin category changes
Original commit message from CVS:
+ checking in plugin category changes
2003-11-16 22:01:30 +00:00

518 lines
14 KiB
C

/* 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;
GstBufferPool *pool;
};
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_sinkconnect (GstPad *pad,
GstCaps *caps);
static GstPadLinkReturn
gst_ffmpegcsp_srcconnect (GstPad *pad,
GstCaps *caps);
static GstPadLinkReturn
gst_ffmpegcsp_srcconnect_func (GstPad *pad,
GstCaps *caps,
gboolean newcaps);
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 GstBufferPool *
ffmpegcsp_get_bufferpool (GstPad *pad)
{
GstFFMpegCsp *space;
space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
if (space->from_pixfmt == space->to_pixfmt &&
space->from_pixfmt != PIX_FMT_NB) {
return gst_pad_get_bufferpool (space->srcpad);
}
return NULL;
}
static GstCaps *
gst_ffmpegcsp_getcaps (GstPad *pad,
GstCaps *caps)
{
GstFFMpegCsp *space;
GstCaps *result;
GstCaps *peercaps;
GstCaps *ourcaps;
space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
/* we can do everything our peer can... */
peercaps = gst_caps_copy (gst_pad_get_allowed_caps (space->srcpad));
/* and our own template of course */
ourcaps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
/* merge them together, we prefer the peercaps first */
result = gst_caps_prepend (ourcaps, peercaps);
return result;
}
static GstPadLinkReturn
gst_ffmpegcsp_srcconnect_func (GstPad *pad,
GstCaps *caps,
gboolean newcaps)
{
AVCodecContext *ctx;
GstFFMpegCsp *space;
GstCaps *peercaps;
GstCaps *ourcaps;
space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
/* we cannot operate if we didn't get src caps */
if (!(ourcaps = space->sinkcaps)) {
if (newcaps) {
gst_pad_recalc_allowed_caps (space->sinkpad);
}
return GST_PAD_LINK_DELAYED;
}
/* first see if we can do the format natively by filtering the peer caps
* with our incomming caps */
if ((peercaps = gst_caps_intersect (caps, ourcaps)) != NULL) {
/* see if the peer likes it too, it should as the caps say so.. */
if (gst_pad_try_set_caps (space->srcpad, peercaps) > 0) {
space->from_pixfmt = space->to_pixfmt = -1;
return GST_PAD_LINK_DONE;
}
}
/* then see what the peer has that matches the size */
peercaps = gst_caps_intersect (caps,
gst_caps_append (
GST_CAPS_NEW (
"ffmpegcsp_filter",
"video/x-raw-yuv",
"width", GST_PROPS_INT (space->width),
"height", GST_PROPS_INT (space->height),
"framerate", GST_PROPS_FLOAT (space->fps)
), GST_CAPS_NEW (
"ffmpegcsp_filter",
"video/x-raw-rgb",
"width", GST_PROPS_INT (space->width),
"height", GST_PROPS_INT (space->height),
"framerate", GST_PROPS_FLOAT (space->fps)
)));
/* we are looping over the caps, so we have to get rid of the lists */
peercaps = gst_caps_normalize (peercaps);
/* loop over all possibilities and select the first one we can convert and
* is accepted by the peer */
ctx = avcodec_alloc_context ();
while (peercaps) {
ctx->width = space->width;
ctx->height = space->height;
ctx->pix_fmt = PIX_FMT_NB;
gst_ffmpeg_caps_to_codectype (CODEC_TYPE_VIDEO, peercaps, ctx);
if (ctx->pix_fmt != PIX_FMT_NB) {
GstCaps *one = gst_caps_copy_1 (peercaps);
if (gst_pad_try_set_caps (space->srcpad, one) > 0) {
space->to_pixfmt = ctx->pix_fmt;
gst_caps_unref (one);
av_free (ctx);
if (space->from_frame)
av_free (space->from_frame);
if (space->to_frame)
av_free (space->to_frame);
space->from_frame = avcodec_alloc_frame ();
space->to_frame = avcodec_alloc_frame ();
return GST_PAD_LINK_DONE;
}
gst_caps_unref (one);
}
peercaps = peercaps->next;
}
av_free (ctx);
/* we disable ourself here */
space->from_pixfmt = space->to_pixfmt = PIX_FMT_NB;
return GST_PAD_LINK_REFUSED;
}
static GstPadLinkReturn
gst_ffmpegcsp_sinkconnect (GstPad *pad,
GstCaps *caps)
{
AVCodecContext *ctx;
GstFFMpegCsp *space;
GstPad *peer;
space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
if (!GST_CAPS_IS_FIXED (caps)) {
return GST_PAD_LINK_DELAYED;
}
ctx = avcodec_alloc_context ();
ctx->width = 0;
ctx->height = 0;
ctx->pix_fmt = PIX_FMT_NB;
gst_ffmpeg_caps_to_codectype (CODEC_TYPE_VIDEO, caps, ctx);
if (!ctx->width || !ctx->height || ctx->pix_fmt == PIX_FMT_NB) {
return GST_PAD_LINK_REFUSED;
}
gst_caps_get_float (caps, "framerate", &space->fps);
space->width = ctx->width;
space->height = ctx->height;
space->from_pixfmt = ctx->pix_fmt;
av_free (ctx);
GST_INFO ( "size: %dx%d", space->width, space->height);
space->sinkcaps = caps;
if ((peer = gst_pad_get_peer (pad)) != NULL) {
GstPadLinkReturn ret;
ret = gst_ffmpegcsp_srcconnect_func (pad,
gst_pad_get_allowed_caps (space->srcpad),
FALSE);
if (ret <= 0) {
space->sinkcaps = NULL;
return ret;
}
return GST_PAD_LINK_DONE;
}
return GST_PAD_LINK_OK;
}
static GstPadLinkReturn
gst_ffmpegcsp_srcconnect (GstPad *pad,
GstCaps *caps)
{
return gst_ffmpegcsp_srcconnect_func (pad, caps, TRUE);
}
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,
"GstFFMpegColorspace",
&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_sinkconnect);
gst_pad_set_getcaps_function (space->sinkpad, gst_ffmpegcsp_getcaps);
gst_pad_set_bufferpool_function (space->sinkpad, ffmpegcsp_get_bufferpool);
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_srcconnect);
space->pool = NULL;
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_buffer_unref (inbuf);
return;
}
if (space->from_pixfmt == space->to_pixfmt) {
outbuf = inbuf;
} else {
if (space->pool) {
outbuf = gst_buffer_new_from_pool (space->pool, 0, 0);
}
if (!outbuf) {
guint size = avpicture_get_size (space->to_pixfmt,
space->width,
space->height);
outbuf = gst_buffer_new_and_alloc (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_PLAYING:
space->pool = gst_pad_get_bufferpool (space->srcpad);
break;
case GST_STATE_PLAYING_TO_PAUSED:
space->pool = NULL;
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,
caps, NULL);
gst_caps_ref (caps); /* FIXME: pad_template_new refs the caps, doesn't it? */
sinktempl = gst_pad_template_new ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
caps, NULL);
return gst_element_register (plugin, "ffcolorspace",
GST_RANK_NONE, GST_TYPE_FFMPEGCSP);
}