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sdi: Add raw SDI muxing/demuxing elements

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This commit is contained in:
David Schleef 2010-09-14 11:30:33 -07:00
parent 9ed93db1d0
commit ec6e7c42e2
7 changed files with 1067 additions and 0 deletions
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2
configure.ac
View file

@ -340,6 +340,7 @@ AG_GST_CHECK_PLUGIN(real)
AG_GST_CHECK_PLUGIN(rtpmux)
AG_GST_CHECK_PLUGIN(rtpvp8)
AG_GST_CHECK_PLUGIN(scaletempo)
AG_GST_CHECK_PLUGIN(sdi)
AG_GST_CHECK_PLUGIN(sdp)
AG_GST_CHECK_PLUGIN(segmentclip)
AG_GST_CHECK_PLUGIN(siren)
@ -1763,6 +1764,7 @@ gst/real/Makefile
gst/rtpmux/Makefile
gst/rtpvp8/Makefile
gst/scaletempo/Makefile
gst/sdi/Makefile
gst/sdp/Makefile
gst/segmentclip/Makefile
gst/siren/Makefile

14
gst/sdi/Makefile.am Normal file
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@ -0,0 +1,14 @@
plugin_LTLIBRARIES = libgstsdi.la
libgstsdi_la_SOURCES = gstsdi.c \
gstsdidemux.c \
gstsdimux.c
libgstsdi_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
libgstsdi_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) \
$(GST_LIBS)
libgstsdi_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstsdi_la_LIBTOOLFLAGS = --tag=disable-static
noinst_HEADERS = gstsdidemux.h gstsdimux.h

44
gst/sdi/gstsdi.c Normal file
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@ -0,0 +1,44 @@
/* GStreamer
* Copyright (C) 2010 David Schleef <ds@schleef.org>
*
* 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 "gstsdidemux.h"
#include "gstsdimux.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
gst_element_register (plugin, "sdidemux", GST_RANK_NONE,
gst_sdi_demux_get_type ());
gst_element_register (plugin, "sdimux", GST_RANK_NONE,
gst_sdi_mux_get_type ());
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"sdi",
"SDI elements", plugin_init, VERSION, "LGPL", PACKAGE_NAME,
GST_PACKAGE_ORIGIN)

553
gst/sdi/gstsdidemux.c Normal file
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@ -0,0 +1,553 @@
/* GStreamer
* Copyright (C) 2010 David Schleef <ds@schleef.org>
*
* 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.
*/
/**
* SECTION:element-gstsdidemux
*
* The gstsdidemux element does FIXME stuff.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v fakesrc ! gstsdidemux ! FIXME ! fakesink
* ]|
* FIXME Describe what the pipeline does.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/gst.h>
#include <string.h>
#include "gstsdidemux.h"
/* prototypes */
static void gst_sdi_demux_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec);
static void gst_sdi_demux_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec);
static void gst_sdi_demux_dispose (GObject * object);
static void gst_sdi_demux_finalize (GObject * object);
static GstStateChangeReturn
gst_sdi_demux_change_state (GstElement * element, GstStateChange transition);
static GstFlowReturn gst_sdi_demux_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_sdi_demux_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_sdi_demux_src_event (GstPad * pad, GstEvent * event);
static GstCaps *gst_sdi_demux_src_getcaps (GstPad * pad);
enum
{
PROP_0
};
/* pad templates */
#define GST_VIDEO_CAPS_NTSC(fourcc) \
"video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=480," \
"framerate=30000/1001,interlaced=TRUE,pixel-aspect-ratio=10/11," \
"chroma-site=mpeg2,color-matrix=sdtv"
#define GST_VIDEO_CAPS_NTSC_WIDE(fourcc) \
"video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=480," \
"framerate=30000/1001,interlaced=TRUE,pixel-aspect-ratio=40/33," \
"chroma-site=mpeg2,color-matrix=sdtv"
#define GST_VIDEO_CAPS_PAL(fourcc) \
"video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=576," \
"framerate=25/1,interlaced=TRUE,pixel-aspect-ratio=12/11," \
"chroma-site=mpeg2,color-matrix=sdtv"
#define GST_VIDEO_CAPS_PAL_WIDE(fourcc) \
"video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=576," \
"framerate=25/1,interlaced=TRUE,pixel-aspect-ratio=16/11," \
"chroma-site=mpeg2,color-matrix=sdtv"
static GstStaticPadTemplate gst_sdi_demux_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-raw-sdi")
);
static GstStaticPadTemplate gst_sdi_demux_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_NTSC ("UYVY") ";"
GST_VIDEO_CAPS_PAL ("UYVY"))
);
/* class initialization */
GST_BOILERPLATE (GstSdiDemux, gst_sdi_demux, GstElement, GST_TYPE_ELEMENT);
static void
gst_sdi_demux_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 (&gst_sdi_demux_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_sdi_demux_sink_template));
gst_element_class_set_details_simple (element_class,
"SDI Demuxer",
"Demuxer",
"Demultiplex SDI streams into raw audio and video",
"David Schleef <ds@schleef.org>");
}
static void
gst_sdi_demux_class_init (GstSdiDemuxClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_sdi_demux_set_property;
gobject_class->get_property = gst_sdi_demux_get_property;
gobject_class->dispose = gst_sdi_demux_dispose;
gobject_class->finalize = gst_sdi_demux_finalize;
if (0)
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_sdi_demux_change_state);
}
static void
gst_sdi_demux_init (GstSdiDemux * sdidemux, GstSdiDemuxClass * sdidemux_class)
{
sdidemux->sinkpad =
gst_pad_new_from_static_template (&gst_sdi_demux_sink_template, "sink");
gst_pad_set_event_function (sdidemux->sinkpad,
GST_DEBUG_FUNCPTR (gst_sdi_demux_sink_event));
gst_pad_set_chain_function (sdidemux->sinkpad,
GST_DEBUG_FUNCPTR (gst_sdi_demux_chain));
gst_element_add_pad (GST_ELEMENT (sdidemux), sdidemux->sinkpad);
sdidemux->srcpad =
gst_pad_new_from_static_template (&gst_sdi_demux_src_template, "src");
gst_pad_set_event_function (sdidemux->srcpad,
GST_DEBUG_FUNCPTR (gst_sdi_demux_src_event));
gst_pad_set_getcaps_function (sdidemux->srcpad,
GST_DEBUG_FUNCPTR (gst_sdi_demux_src_getcaps));
gst_element_add_pad (GST_ELEMENT (sdidemux), sdidemux->srcpad);
}
void
gst_sdi_demux_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstSdiDemux *sdidemux;
g_return_if_fail (GST_IS_SDI_DEMUX (object));
sdidemux = GST_SDI_DEMUX (object);
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_sdi_demux_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstSdiDemux *sdidemux;
g_return_if_fail (GST_IS_SDI_DEMUX (object));
sdidemux = GST_SDI_DEMUX (object);
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_sdi_demux_dispose (GObject * object)
{
GstSdiDemux *sdidemux;
g_return_if_fail (GST_IS_SDI_DEMUX (object));
sdidemux = GST_SDI_DEMUX (object);
/* clean up as possible. may be called multiple times */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
void
gst_sdi_demux_finalize (GObject * object)
{
GstSdiDemux *sdidemux;
g_return_if_fail (GST_IS_SDI_DEMUX (object));
sdidemux = GST_SDI_DEMUX (object);
/* clean up object here */
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstStateChangeReturn
gst_sdi_demux_change_state (GstElement * element, GstStateChange transition)
{
return GST_STATE_CHANGE_SUCCESS;
}
static GstCaps *
gst_sdi_demux_src_getcaps (GstPad * pad)
{
return gst_caps_from_string (GST_VIDEO_CAPS_NTSC ("UYVY"));
}
static void
gst_sdi_demux_get_output_buffer (GstSdiDemux * sdidemux)
{
sdidemux->output_buffer =
gst_buffer_new_and_alloc (720 * sdidemux->format->active_lines * 2);
gst_buffer_set_caps (sdidemux->output_buffer,
gst_caps_from_string (GST_VIDEO_CAPS_PAL ("UYVY")));
GST_BUFFER_TIMESTAMP (sdidemux->output_buffer) =
GST_SECOND * sdidemux->frame_number;
sdidemux->frame_number++;
}
static guint32
get_word10 (guint8 * ptr)
{
guint32 a;
a = (((ptr[0] >> 2) | (ptr[1] << 6)) & 0xff) << 24;
a |= (((ptr[1] >> 4) | (ptr[2] << 4)) & 0xff) << 16;
a |= (((ptr[2] >> 6) | (ptr[3] << 2)) & 0xff) << 8;
a |= ptr[4];
return a;
}
static void
line10_copy (guint8 * dest, guint8 * src, int n)
{
int i;
guint32 a;
for (i = 0; i < n; i++) {
a = get_word10 (src);
GST_WRITE_UINT32_BE (dest, a);
src += 5;
dest += 4;
}
}
static GstFlowReturn
copy_line (GstSdiDemux * sdidemux, guint8 * line)
{
guint8 *output_data;
GstFlowReturn ret = GST_FLOW_OK;
GstSdiFormat *format = sdidemux->format;
output_data = GST_BUFFER_DATA (sdidemux->output_buffer);
/* line is one less than the video line */
if (sdidemux->line >= format->start0 - 1 &&
sdidemux->line < format->start0 - 1 + format->active_lines / 2) {
#if 0
memcpy (output_data + 720 * 2 * ((sdidemux->line -
(format->start0 - 1)) * 2 + (!format->tff)),
line + (format->width - 720) * 2, 720 * 2);
#else
line10_copy (output_data + 720 * 2 * ((sdidemux->line -
(format->start0 - 1)) * 2 + (!format->tff)),
line + (format->width - 720) / 2 * 5, 720 / 2);
#endif
}
if (sdidemux->line >= format->start1 - 1 &&
sdidemux->line < format->start1 - 1 + format->active_lines / 2) {
#if 0
memcpy (output_data + 720 * 2 * ((sdidemux->line -
(format->start1 - 1)) * 2 + (format->tff)),
line + (format->width - 720) * 2, 720 * 2);
#else
line10_copy (output_data + 720 * 2 * ((sdidemux->line -
(format->start1 - 1)) * 2 + (format->tff)),
line + (format->width - 720) / 2 * 5, 720 / 2);
#endif
}
sdidemux->offset = 0;
sdidemux->line++;
if (sdidemux->line == format->lines) {
ret = gst_pad_push (sdidemux->srcpad, sdidemux->output_buffer);
gst_sdi_demux_get_output_buffer (sdidemux);
output_data = GST_BUFFER_DATA (sdidemux->output_buffer);
sdidemux->line = 0;
}
return ret;
}
#define SDI_IS_SYNC(a) (((a)&0xffffff80) == 0xff000080)
#define SDI_SYNC_F(a) (((a)>>6)&1)
#define SDI_SYNC_V(a) (((a)>>5)&1)
#define SDI_SYNC_H(a) (((a)>>4)&1)
GstSdiFormat sd_ntsc = { 525, 480, 858, 20, 283, 0 };
GstSdiFormat sd_pal = { 625, 576, 864, 23, 336, 1 };
static GstFlowReturn
gst_sdi_demux_chain (GstPad * pad, GstBuffer * buffer)
{
GstSdiDemux *sdidemux;
int offset = 0;
guint8 *data = GST_BUFFER_DATA (buffer);
int size = GST_BUFFER_SIZE (buffer);
guint8 *output_data;
GstFlowReturn ret = GST_FLOW_OK;
GstSdiFormat *format;
sdidemux = GST_SDI_DEMUX (gst_pad_get_parent (pad));
sdidemux->format = &sd_pal;
format = sdidemux->format;
GST_DEBUG_OBJECT (sdidemux, "chain");
if (GST_BUFFER_IS_DISCONT (buffer)) {
sdidemux->have_hsync = FALSE;
sdidemux->have_vsync = FALSE;
}
if (!sdidemux->have_hsync) {
#if 0
for (offset = 0; offset < size; offset += 4) {
guint32 sync = READ_UINT32_BE (data + offset);
GST_ERROR ("sync value %08x", sync);
if (SDI_IS_SYNC (sync) && SDI_SYNC_H (sync)) {
sdidemux->have_hsync = TRUE;
sdidemux->line = 0;
sdidemux->offset = 0;
break;
}
}
#else
for (offset = 0; offset < size; offset += 5) {
guint32 sync = get_word10 (data + offset);
//GST_ERROR("sync value %08x", sync);
if (SDI_IS_SYNC (sync) && SDI_SYNC_H (sync)) {
sdidemux->have_hsync = TRUE;
sdidemux->line = 0;
sdidemux->offset = 0;
break;
}
}
#endif
if (!sdidemux->have_hsync) {
GST_ERROR ("no sync");
goto out;
}
}
if (sdidemux->output_buffer == NULL) {
gst_sdi_demux_get_output_buffer (sdidemux);
}
output_data = GST_BUFFER_DATA (sdidemux->output_buffer);
#if 0
if (sdidemux->offset) {
int n;
/* second half of a line */
n = MIN (size - offset, format->width * 2 - sdidemux->offset);
memcpy (sdidemux->stored_line + sdidemux->offset, data + offset, n);
offset += n;
sdidemux->offset += n;
if (sdidemux->offset == format->width * 2) {
guint32 sync =
GST_READ_UINT32_BE (data + offset + (format->width - 720 - 2) * 2);
//GST_ERROR("%08x", sync);
if (!sdidemux->have_vsync) {
//GST_ERROR("%08x", GST_READ_UINT32_BE(data+offset));
if (SDI_IS_SYNC (sync) && !SDI_SYNC_F (sync) &&
SDI_SYNC_F (sdidemux->last_sync)) {
sdidemux->have_vsync = TRUE;
}
sdidemux->line = 0;
}
ret = copy_line (sdidemux, sdidemux->stored_line);
sdidemux->last_sync = sync;
}
}
while (size - offset >= format->width * 2) {
guint32 sync =
GST_READ_UINT32_BE (data + offset + (format->width - 720 - 2) * 2);
//GST_ERROR("%08x", sync);
if (!sdidemux->have_vsync) {
if (SDI_IS_SYNC (sync) && !SDI_SYNC_F (sync) &&
SDI_SYNC_F (sdidemux->last_sync)) {
sdidemux->have_vsync = TRUE;
}
sdidemux->line = 0;
}
ret = copy_line (sdidemux, data + offset);
offset += format->width * 2;
sdidemux->last_sync = sync;
}
if (size - offset > 0) {
memcpy (sdidemux->stored_line, data + offset, size - offset);
sdidemux->offset = size - offset;
}
#else
if (sdidemux->offset) {
int n;
/* second half of a line */
n = MIN (size - offset, format->width / 2 * 5 - sdidemux->offset);
memcpy (sdidemux->stored_line + sdidemux->offset, data + offset, n);
offset += n;
sdidemux->offset += n;
if (sdidemux->offset == (format->width / 2) * 5) {
guint32 sync =
get_word10 (data + offset + ((format->width - 720 - 2) / 2) * 5);
if (!sdidemux->have_vsync) {
//GST_ERROR("%08x", GST_READ_UINT32_BE(data+offset));
if (SDI_IS_SYNC (sync) && !SDI_SYNC_F (sync) &&
SDI_SYNC_F (sdidemux->last_sync)) {
sdidemux->have_vsync = TRUE;
}
sdidemux->line = 0;
}
ret = copy_line (sdidemux, sdidemux->stored_line);
sdidemux->last_sync = sync;
}
}
while (size - offset >= format->width / 2 * 5) {
guint32 sync =
get_word10 (data + offset + ((format->width - 720 - 2) / 2) * 5);
//GST_ERROR("%08x", sync);
if (!sdidemux->have_vsync) {
if (SDI_IS_SYNC (sync) && !SDI_SYNC_F (sync) &&
SDI_SYNC_F (sdidemux->last_sync)) {
sdidemux->have_vsync = TRUE;
}
sdidemux->line = 0;
}
ret = copy_line (sdidemux, data + offset);
offset += (format->width / 2) * 5;
sdidemux->last_sync = sync;
}
if (size - offset > 0) {
memcpy (sdidemux->stored_line, data + offset, size - offset);
sdidemux->offset = size - offset;
}
#endif
out:
gst_buffer_unref (buffer);
gst_object_unref (sdidemux);
return ret;
}
static gboolean
gst_sdi_demux_sink_event (GstPad * pad, GstEvent * event)
{
gboolean res;
GstSdiDemux *sdidemux;
sdidemux = GST_SDI_DEMUX (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (sdidemux, "event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
res = gst_pad_push_event (sdidemux->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
res = gst_pad_push_event (sdidemux->srcpad, event);
break;
case GST_EVENT_NEWSEGMENT:
res = gst_pad_push_event (sdidemux->srcpad, event);
break;
case GST_EVENT_EOS:
res = gst_pad_push_event (sdidemux->srcpad, event);
break;
default:
res = gst_pad_push_event (sdidemux->srcpad, event);
break;
}
gst_object_unref (sdidemux);
return TRUE;
}
static gboolean
gst_sdi_demux_src_event (GstPad * pad, GstEvent * event)
{
gboolean res;
GstSdiDemux *sdidemux;
sdidemux = GST_SDI_DEMUX (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (sdidemux, "event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
res = gst_pad_push_event (sdidemux->sinkpad, event);
break;
default:
res = gst_pad_push_event (sdidemux->sinkpad, event);
break;
}
gst_object_unref (sdidemux);
return TRUE;
}

76
gst/sdi/gstsdidemux.h Normal file
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/* GStreamer
* Copyright (C) 2010 REAL_NAME <EMAIL_ADDRESS>
*
* 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.
*/
#ifndef _GST_SDI_DEMUX_H_
#define _GST_SDI_DEMUX_H_
#include <gst/gst.h>
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_SDI_DEMUX (gst_sdi_demux_get_type())
#define GST_SDI_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SDI_DEMUX,GstSdiDemux))
#define GST_SDI_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SDI_DEMUX,GstSdiDemuxClass))
#define GST_IS_SDI_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SDI_DEMUX))
#define GST_IS_SDI_DEMUX_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SDI_DEMUX))
typedef struct _GstSdiDemux GstSdiDemux;
typedef struct _GstSdiDemuxClass GstSdiDemuxClass;
typedef struct _GstSdiFormat GstSdiFormat;
struct _GstSdiDemux
{
GstElement base_sdidemux;
GstPad *sinkpad;
GstPad *srcpad;
GstBuffer *output_buffer;
int line;
int offset;
gboolean have_hsync;
gboolean have_vsync;
guchar stored_line[2160]; /* 864/2*5 */
int frame_number;
guint32 last_sync;
GstSdiFormat *format;
};
struct _GstSdiFormat
{
int lines;
int active_lines;
int width;
int start0;
int start1;
int tff;
};
struct _GstSdiDemuxClass
{
GstElementClass base_sdidemux_class;
};
GType gst_sdi_demux_get_type (void);
G_END_DECLS
#endif

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gst/sdi/gstsdimux.c Normal file
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/* GStreamer
* Copyright (C) 2010 David Schleef <ds@schleef.org>
*
* 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.
*/
/**
* SECTION:element-gstsdimux
*
* The gstsdimux element does FIXME stuff.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v fakesrc ! gstsdimux ! FIXME ! fakesink
* ]|
* FIXME Describe what the pipeline does.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/gst.h>
#include "gstsdimux.h"
/* prototypes */
static void gst_sdi_mux_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec);
static void gst_sdi_mux_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec);
static void gst_sdi_mux_dispose (GObject * object);
static void gst_sdi_mux_finalize (GObject * object);
static GstPad *gst_sdi_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name);
static void gst_sdi_mux_release_pad (GstElement * element, GstPad * pad);
static GstStateChangeReturn
gst_sdi_mux_change_state (GstElement * element, GstStateChange transition);
static const GstQueryType *gst_sdi_mux_get_query_types (GstElement * element);
static gboolean gst_sdi_mux_query (GstElement * element, GstQuery * query);
static GstFlowReturn gst_sdi_mux_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_sdi_mux_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_sdi_mux_src_event (GstPad * pad, GstEvent * event);
enum
{
PROP_0
};
/* pad templates */
#define GST_VIDEO_CAPS_NTSC(fourcc) \
"video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=480," \
"framerate=30000/1001,interlaced=TRUE,pixel-aspect-ratio=10/11," \
"chroma-site=mpeg2,color-matrix=sdtv"
#define GST_VIDEO_CAPS_NTSC_WIDE(fourcc) \
"video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=480," \
"framerate=30000/1001,interlaced=TRUE,pixel-aspect-ratio=40/33," \
"chroma-site=mpeg2,color-matrix=sdtv"
#define GST_VIDEO_CAPS_PAL(fourcc) \
"video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=576," \
"framerate=25/1,interlaced=TRUE,pixel-aspect-ratio=12/11," \
"chroma-site=mpeg2,color-matrix=sdtv"
#define GST_VIDEO_CAPS_PAL_WIDE(fourcc) \
"video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=576," \
"framerate=25/1,interlaced=TRUE,pixel-aspect-ratio=16/11," \
"chroma-site=mpeg2,color-matrix=sdtv"
static GstStaticPadTemplate gst_sdi_mux_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_NTSC ("{UYVY,v210}") ";"
GST_VIDEO_CAPS_PAL ("{UYVY,v210}"))
);
static GstStaticPadTemplate gst_sdi_mux_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS
("application/x-raw-sdi,rate=270,format=(fourcc){UYVY,v210}")
);
/* class initialization */
GST_BOILERPLATE (GstSdiMux, gst_sdi_mux, GstElement, GST_TYPE_ELEMENT);
static void
gst_sdi_mux_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 (&gst_sdi_mux_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_sdi_mux_sink_template));
gst_element_class_set_details_simple (element_class, "SDI Muxer",
"Muxer",
"Multiplex raw audio and video into SDI",
"David Schleef <ds@schleef.org>");
}
static void
gst_sdi_mux_class_init (GstSdiMuxClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_sdi_mux_set_property;
gobject_class->get_property = gst_sdi_mux_get_property;
gobject_class->dispose = gst_sdi_mux_dispose;
gobject_class->finalize = gst_sdi_mux_finalize;
element_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_sdi_mux_request_new_pad);
element_class->release_pad = GST_DEBUG_FUNCPTR (gst_sdi_mux_release_pad);
element_class->change_state = GST_DEBUG_FUNCPTR (gst_sdi_mux_change_state);
element_class->get_query_types =
GST_DEBUG_FUNCPTR (gst_sdi_mux_get_query_types);
element_class->query = GST_DEBUG_FUNCPTR (gst_sdi_mux_query);
}
static void
gst_sdi_mux_init (GstSdiMux * sdimux, GstSdiMuxClass * sdimux_class)
{
sdimux->sinkpad =
gst_pad_new_from_static_template (&gst_sdi_mux_sink_template, "sink");
gst_pad_set_event_function (sdimux->sinkpad,
GST_DEBUG_FUNCPTR (gst_sdi_mux_sink_event));
gst_pad_set_chain_function (sdimux->sinkpad,
GST_DEBUG_FUNCPTR (gst_sdi_mux_chain));
gst_element_add_pad (GST_ELEMENT (sdimux), sdimux->sinkpad);
sdimux->srcpad = gst_pad_new_from_static_template (&gst_sdi_mux_src_template,
"src");
gst_pad_set_event_function (sdimux->srcpad,
GST_DEBUG_FUNCPTR (gst_sdi_mux_src_event));
gst_element_add_pad (GST_ELEMENT (sdimux), sdimux->srcpad);
}
void
gst_sdi_mux_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstSdiMux *sdimux;
g_return_if_fail (GST_IS_SDI_MUX (object));
sdimux = GST_SDI_MUX (object);
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_sdi_mux_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstSdiMux *sdimux;
g_return_if_fail (GST_IS_SDI_MUX (object));
sdimux = GST_SDI_MUX (object);
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_sdi_mux_dispose (GObject * object)
{
GstSdiMux *sdimux;
g_return_if_fail (GST_IS_SDI_MUX (object));
sdimux = GST_SDI_MUX (object);
/* clean up as possible. may be called multiple times */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
void
gst_sdi_mux_finalize (GObject * object)
{
GstSdiMux *sdimux;
g_return_if_fail (GST_IS_SDI_MUX (object));
sdimux = GST_SDI_MUX (object);
/* clean up object here */
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstPad *
gst_sdi_mux_request_new_pad (GstElement * element, GstPadTemplate * templ,
const gchar * name)
{
return NULL;
}
static void
gst_sdi_mux_release_pad (GstElement * element, GstPad * pad)
{
}
static GstStateChangeReturn
gst_sdi_mux_change_state (GstElement * element, GstStateChange transition)
{
return GST_STATE_CHANGE_SUCCESS;
}
static const GstQueryType *
gst_sdi_mux_get_query_types (GstElement * element)
{
return NULL;
}
static gboolean
gst_sdi_mux_query (GstElement * element, GstQuery * query)
{
return FALSE;
}
static GstFlowReturn
gst_sdi_mux_chain (GstPad * pad, GstBuffer * buffer)
{
GstSdiMux *sdimux;
sdimux = GST_SDI_MUX (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (sdimux, "chain");
gst_object_unref (sdimux);
return GST_FLOW_OK;
}
static gboolean
gst_sdi_mux_sink_event (GstPad * pad, GstEvent * event)
{
gboolean res;
GstSdiMux *sdimux;
sdimux = GST_SDI_MUX (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (sdimux, "event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
res = gst_pad_push_event (sdimux->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
res = gst_pad_push_event (sdimux->srcpad, event);
break;
case GST_EVENT_NEWSEGMENT:
res = gst_pad_push_event (sdimux->srcpad, event);
break;
case GST_EVENT_EOS:
res = gst_pad_push_event (sdimux->srcpad, event);
break;
default:
res = gst_pad_push_event (sdimux->srcpad, event);
break;
}
gst_object_unref (sdimux);
return TRUE;
}
static gboolean
gst_sdi_mux_src_event (GstPad * pad, GstEvent * event)
{
gboolean res;
GstSdiMux *sdimux;
sdimux = GST_SDI_MUX (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (sdimux, "event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
res = gst_pad_push_event (sdimux->sinkpad, event);
break;
default:
res = gst_pad_push_event (sdimux->sinkpad, event);
break;
}
gst_object_unref (sdimux);
return TRUE;
}

54
gst/sdi/gstsdimux.h Normal file
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@ -0,0 +1,54 @@
/* GStreamer
* Copyright (C) 2010 REAL_NAME <EMAIL_ADDRESS>
*
* 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.
*/
#ifndef _GST_SDI_MUX_H_
#define _GST_SDI_MUX_H_
#include <gst/gst.h>
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_SDI_MUX (gst_sdi_mux_get_type())
#define GST_SDI_MUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SDI_MUX,GstSdiMux))
#define GST_SDI_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SDI_MUX,GstSdiMuxClass))
#define GST_IS_SDI_MUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SDI_MUX))
#define GST_IS_SDI_MUX_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SDI_MUX))
typedef struct _GstSdiMux GstSdiMux;
typedef struct _GstSdiMuxClass GstSdiMuxClass;
struct _GstSdiMux
{
GstElement base_sdimux;
GstPad *srcpad;
GstPad *sinkpad;
};
struct _GstSdiMuxClass
{
GstElementClass base_sdimux_class;
};
GType gst_sdi_mux_get_type (void);
G_END_DECLS
#endif