gstreamer/gst/y4m/gsty4mencode.c
Stefan Kost bf3fd4f95d Define GstElementDetails as const and also static (when defined as global)
Original commit message from CVS:
* ext/amrwb/gstamrwbdec.c:
* ext/amrwb/gstamrwbenc.c:
* ext/amrwb/gstamrwbparse.c:
* ext/arts/gst_arts.c:
* ext/artsd/gstartsdsink.c:
* ext/audiofile/gstafparse.c:
* ext/audiofile/gstafsink.c:
* ext/audiofile/gstafsrc.c:
* ext/audioresample/gstaudioresample.c:
* ext/bz2/gstbz2dec.c:
* ext/bz2/gstbz2enc.c:
* ext/cdaudio/gstcdaudio.c:
* ext/directfb/dfbvideosink.c:
* ext/divx/gstdivxdec.c:
* ext/divx/gstdivxenc.c:
* ext/dts/gstdtsdec.c: (gst_dtsdec_base_init):
* ext/faac/gstfaac.c: (gst_faac_base_init):
* ext/faad/gstfaad.c:
* ext/gsm/gstgsmdec.c:
* ext/gsm/gstgsmenc.c:
* ext/hermes/gsthermescolorspace.c:
* ext/ivorbis/vorbisfile.c:
* ext/lcs/gstcolorspace.c:
* ext/libfame/gstlibfame.c:
* ext/libmms/gstmms.c: (gst_mms_base_init):
* ext/musepack/gstmusepackdec.c: (gst_musepackdec_base_init):
* ext/musicbrainz/gsttrm.c: (gst_musicbrainz_base_init):
* ext/nas/nassink.c: (gst_nassink_base_init):
* ext/neon/gstneonhttpsrc.c:
* ext/sdl/sdlaudiosink.c:
* ext/sdl/sdlvideosink.c:
* ext/shout/gstshout.c:
* ext/snapshot/gstsnapshot.c:
* ext/sndfile/gstsf.c:
* ext/swfdec/gstswfdec.c:
* ext/tarkin/gsttarkindec.c:
* ext/tarkin/gsttarkinenc.c:
* ext/theora/theoradec.c:
* ext/wavpack/gstwavpackdec.c: (gst_wavpack_dec_base_init):
* ext/wavpack/gstwavpackparse.c: (gst_wavpack_parse_base_init):
* ext/xvid/gstxviddec.c:
* ext/xvid/gstxvidenc.c:
* gst/cdxaparse/gstcdxaparse.c: (gst_cdxa_parse_base_init):
* gst/cdxaparse/gstcdxastrip.c: (gst_cdxastrip_base_init):
* gst/chart/gstchart.c:
* gst/colorspace/gstcolorspace.c:
* gst/deinterlace/gstdeinterlace.c:
* gst/equalizer/gstiirequalizer.c: (gst_iir_equalizer_base_init):
* gst/festival/gstfestival.c:
* gst/filter/gstbpwsinc.c:
* gst/filter/gstiir.c:
* gst/filter/gstlpwsinc.c:
* gst/freeze/gstfreeze.c:
* gst/games/gstpuzzle.c: (gst_puzzle_base_init):
* gst/librfb/gstrfbsrc.c:
* gst/mixmatrix/mixmatrix.c:
* gst/mpeg1sys/gstmpeg1systemencode.c:
* gst/mpeg1videoparse/gstmp1videoparse.c:
* gst/mpeg2sub/gstmpeg2subt.c:
* gst/mpegaudioparse/gstmpegaudioparse.c:
* gst/multifilesink/gstmultifilesink.c:
* gst/overlay/gstoverlay.c:
* gst/passthrough/gstpassthrough.c:
* gst/playondemand/gstplayondemand.c:
* gst/qtdemux/qtdemux.c:
* gst/rtjpeg/gstrtjpegdec.c:
* gst/rtjpeg/gstrtjpegenc.c:
* gst/smooth/gstsmooth.c:
* gst/smoothwave/gstsmoothwave.c:
* gst/spectrum/gstspectrum.c:
* gst/speed/gstspeed.c:
* gst/stereo/gststereo.c:
* gst/switch/gstswitch.c:
* gst/tta/gstttadec.c: (gst_tta_dec_base_init):
* gst/tta/gstttaparse.c: (gst_tta_parse_base_init):
* gst/vbidec/gstvbidec.c:
* gst/videocrop/gstvideocrop.c:
* gst/videodrop/gstvideodrop.c:
* gst/virtualdub/gstxsharpen.c:
* gst/xingheader/gstxingmux.c: (gst_xing_mux_base_init):
* gst/y4m/gsty4mencode.c:
* sys/cdrom/gstcdplayer.c:
* sys/directdraw/gstdirectdrawsink.c:
* sys/directsound/gstdirectsoundsink.c:
* sys/glsink/glimagesink.c:
* sys/qcam/gstqcamsrc.c:
* sys/v4l2/gstv4l2src.c:
* sys/vcd/vcdsrc.c: (gst_vcdsrc_base_init):
* sys/ximagesrc/ximagesrc.c:
Define GstElementDetails as const and also static (when defined as
global)
2006-04-25 21:56:38 +00:00

292 lines
7.8 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <string.h>
#include <math.h>
#include <gst/gst.h>
#include <gst/video/video.h>
#include "gsty4mencode.h"
static const GstElementDetails y4mencode_details =
GST_ELEMENT_DETAILS ("YUV4MPEG video encoder",
"Codec/Encoder/Video",
"Encodes a YUV frame into the yuv4mpeg format (mjpegtools)",
"Wim Taymans <wim.taymans@chello.be>");
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
};
static GstStaticPadTemplate y4mencode_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-yuv4mpeg, " "y4mversion = (int) 1")
);
static GstStaticPadTemplate y4mencode_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
);
static void gst_y4mencode_base_init (gpointer g_class);
static void gst_y4mencode_class_init (GstY4mEncodeClass * klass);
static void gst_y4mencode_init (GstY4mEncode * filter);
static void gst_y4mencode_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_y4mencode_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_y4mencode_chain (GstPad * pad, GstData * _data);
static GstStateChangeReturn gst_y4mencode_change_state (GstElement * element,
GstStateChange transition);
static GstElementClass *parent_class = NULL;
/*static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_y4mencode_get_type (void)
{
static GType y4mencode_type = 0;
if (!y4mencode_type) {
static const GTypeInfo y4mencode_info = {
sizeof (GstY4mEncodeClass),
gst_y4mencode_base_init,
NULL,
(GClassInitFunc) gst_y4mencode_class_init,
NULL,
NULL,
sizeof (GstY4mEncode),
0,
(GInstanceInitFunc) gst_y4mencode_init,
};
y4mencode_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstY4mEncode", &y4mencode_info, 0);
}
return y4mencode_type;
}
static void
gst_y4mencode_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&y4mencode_src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&y4mencode_sink_factory));
gst_element_class_set_details (element_class, &y4mencode_details);
}
static void
gst_y4mencode_class_init (GstY4mEncodeClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gstelement_class->change_state = gst_y4mencode_change_state;
gobject_class->set_property = gst_y4mencode_set_property;
gobject_class->get_property = gst_y4mencode_get_property;
}
static GstPadLinkReturn
gst_y4mencode_sinkconnect (GstPad * pad, const GstCaps * caps)
{
GstY4mEncode *filter;
gint idx = -1, i;
gdouble fps;
gdouble framerates[] = {
00.000,
24000 / 1001., 24.000, /* 24fps movie */
25.000, /* PAL */
30000 / 1001., 30.000, /* NTSC */
50.000,
60000 / 1001., 60.000
};
GstStructure *structure;
filter = GST_Y4MENCODE (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "width", &filter->width) ||
!gst_structure_get_int (structure, "height", &filter->height) ||
!gst_structure_get_double (structure, "framerate", &fps))
return GST_PAD_LINK_REFUSED;
/* find fps idx */
idx = 0;
for (i = 1; i < 9; i++) {
gdouble old_diff = fabs (framerates[idx] - fps),
new_diff = fabs (framerates[i] - fps);
if (new_diff < old_diff) {
idx = i;
}
}
filter->fps_idx = idx;
return GST_PAD_LINK_OK;
}
static void
gst_y4mencode_init (GstY4mEncode * filter)
{
filter->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&y4mencode_sink_factory), "sink");
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
gst_pad_set_chain_function (filter->sinkpad, gst_y4mencode_chain);
gst_pad_set_link_function (filter->sinkpad, gst_y4mencode_sinkconnect);
filter->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&y4mencode_src_factory), "src");
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
filter->init = TRUE;
}
static void
gst_y4mencode_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstY4mEncode *filter;
GstBuffer *outbuf;
gchar *header;
gint len;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
filter = GST_Y4MENCODE (gst_pad_get_parent (pad));
g_return_if_fail (filter != NULL);
g_return_if_fail (GST_IS_Y4MENCODE (filter));
outbuf = gst_buffer_new ();
GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (buf) + 256);
if (filter->init) {
header = "YUV4MPEG W%d H%d I? %d\nFRAME\n";
filter->init = FALSE;
} else {
header = "FRAME\n";
}
snprintf (GST_BUFFER_DATA (outbuf), 255, header,
filter->width, filter->height, filter->fps_idx);
len = strlen (GST_BUFFER_DATA (outbuf));
memcpy (GST_BUFFER_DATA (outbuf) + len, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
GST_BUFFER_SIZE (outbuf) = GST_BUFFER_SIZE (buf) + len;
gst_buffer_unref (buf);
gst_pad_push (filter->srcpad, GST_DATA (outbuf));
}
static void
gst_y4mencode_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstY4mEncode *filter;
g_return_if_fail (GST_IS_Y4MENCODE (object));
filter = GST_Y4MENCODE (object);
switch (prop_id) {
default:
break;
}
}
static void
gst_y4mencode_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstY4mEncode *filter;
g_return_if_fail (GST_IS_Y4MENCODE (object));
filter = GST_Y4MENCODE (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_y4mencode_change_state (GstElement * element, GstStateChange transition)
{
GstY4mEncode *filter;
g_return_val_if_fail (GST_IS_Y4MENCODE (element), GST_STATE_CHANGE_FAILURE);
filter = GST_Y4MENCODE (element);
if (transition == GST_STATE_CHANGE_NULL_TO_READY) {
filter->init = TRUE;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return GST_STATE_CHANGE_SUCCESS;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "y4menc", GST_RANK_NONE,
GST_TYPE_Y4MENCODE);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"y4menc",
"Encodes a YUV frame into the yuv4mpeg format (mjpegtools)",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)