gstreamer/sys/dxr3/gstdxr3videosink.c

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/* GStreamer DXR3 Hardware MPEG video decoder plugin
* Copyright (C) <2002> Rehan Khwaja <rehankhwaja@yahoo.com>
*
* 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.
*/
#include <string.h>
#include <fcntl.h>
#include "gstdxr3videosink.h"
#include <sys/ioctl.h>
#include <linux/em8300.h>
enum {
ARG_0,
ARG_TV_MODE,
ARG_DEVICE,
ARG_ASPECT_RATIO
/* TODO -
* DIGITAL/ANALOG AUDIO OUT
* OVERLAY MODE
* SET BCS?? what's that?
* OVERLAY ATTRIBUTES - where on the screen to put image
* OVERLAY WINDOW - as above
* OVERLAY KEYCOLOR
* OVERLAY SIGNAL MODE
* PLAYMODE - pausing, playing, slow forward etc
*/
};
static void gst_dxr3_video_sink_class_init (GstDxr3VideoSinkClass *klass);
static void gst_dxr3_video_sink_init (GstDxr3VideoSink *example);
static void gst_dxr3_video_sink_chain (GstPad *pad, GstBuffer *buf);
static void gst_dxr3_video_sink_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_dxr3_video_sink_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static gboolean gst_dxr3_video_sink_handle_event (GstPad *pad, GstEvent *event);
static void gst_dxr3_video_sink_set_clock (GstElement *element, GstClock *clock);
static GstElementClass *parent_class = NULL;
#define GST_TYPE_DXR3_VIDEO_SINK_ASPECT_RATIOS (gst_dxr3_video_sink_aspect_ratios_get_type())
static GType
gst_dxr3_video_sink_aspect_ratios_get_type(void) {
static GType dxr3_video_sink_aspect_ratio_type = 0;
static GEnumValue dxr3_video_sink_aspect_ratios[] = {
{0, "0", "4:3"},
{1, "1", "16:9"},
{0, NULL, NULL},
};
if (!dxr3_video_sink_aspect_ratio_type) {
dxr3_video_sink_aspect_ratio_type = g_enum_register_static("GstDxr3VideoSinkAspectRatios", dxr3_video_sink_aspect_ratios);
}
return dxr3_video_sink_aspect_ratio_type;
}
#define GST_TYPE_DXR3_VIDEO_SINK_TV_MODES (gst_dxr3_video_sink_tv_modes_get_type())
static GType
gst_dxr3_video_sink_tv_modes_get_type(void) {
static GType dxr3_video_sink_tv_mode_type = 0;
static GEnumValue dxr3_video_sink_tv_modes[] = {
{0, "0", "NTSC"},
{1, "1", "PAL"},
{0, NULL, NULL},
};
if (!dxr3_video_sink_tv_mode_type) {
dxr3_video_sink_tv_mode_type = g_enum_register_static("GstDxr3VideoSinkTvModes", dxr3_video_sink_tv_modes);
}
return dxr3_video_sink_tv_mode_type;
}
static void
gst_dxr3_video_sink_set_clock(GstElement *element, GstClock *clock)
{
GstDxr3VideoSink *dxr3_video_sink;
dxr3_video_sink = GST_DXR3_VIDEO_SINK(element);
dxr3_video_sink->clock = clock;
}
GType
gst_dxr3_video_sink_get_type(void)
{
static GType dxr3_video_sink_type = 0;
if (!dxr3_video_sink_type) {
static const GTypeInfo dxr3_video_sink_info = {
sizeof(GstDxr3VideoSinkClass), NULL,
NULL,
(GClassInitFunc)gst_dxr3_video_sink_class_init,
NULL,
NULL,
sizeof(GstDxr3VideoSink),
0,
(GInstanceInitFunc)gst_dxr3_video_sink_init,
};
dxr3_video_sink_type = g_type_register_static(GST_TYPE_ELEMENT, "GstDxr3VideoSink", &dxr3_video_sink_info, 0);
}
return dxr3_video_sink_type;
}
static gchar *
gst_dxr3_video_sink_get_control_device(GstDxr3VideoSink *dxr3_video_sink)
{
return g_strdup_printf("/dev/em8300-%d", dxr3_video_sink->device_number);
}
static gchar *
gst_dxr3_video_sink_get_video_device(GstDxr3VideoSink *dxr3_video_sink)
{
return g_strdup_printf("/dev/em8300_mv-%d", dxr3_video_sink->device_number);
}
static void
gst_dxr3_video_sink_class_init (GstDxr3VideoSinkClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TV_MODE,
g_param_spec_enum("tv-mode","tv-mode","sets NTSC/PAL output format",
GST_TYPE_DXR3_VIDEO_SINK_TV_MODES, 0, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE,
g_param_spec_int("device","device","sets/returns board number",
0,3,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ASPECT_RATIO,
g_param_spec_enum("aspect-ratio", "aspect-ratio", "sets/returns aspect ratio",
GST_TYPE_DXR3_VIDEO_SINK_ASPECT_RATIOS, 0, G_PARAM_READWRITE));
gobject_class->set_property = gst_dxr3_video_sink_set_property;
gobject_class->get_property = gst_dxr3_video_sink_get_property;
}
static void
gst_dxr3_video_sink_open_device(GstDxr3VideoSink *dxr3_video_sink)
{
gchar *video_device_path;
video_device_path = gst_dxr3_video_sink_get_video_device(dxr3_video_sink);
if (dxr3_video_sink->device){
fclose(dxr3_video_sink->device);
}
/* this is what disksink uses */
dxr3_video_sink->device = fopen(video_device_path, "w");
g_free(video_device_path);
}
static void
gst_dxr3_video_sink_init(GstDxr3VideoSink *dxr3_video_sink)
{
dxr3_video_sink->sinkpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (dxr3_video_sink_factory), "video_sink");
gst_pad_set_chain_function(dxr3_video_sink->sinkpad, gst_dxr3_video_sink_chain);
gst_element_add_pad(GST_ELEMENT(dxr3_video_sink),dxr3_video_sink->sinkpad);
dxr3_video_sink->device_number = 0;
dxr3_video_sink->device = 0;
/* FIXME - should only have device open when necessary
* which probably requires handling events?
* also, when is this device closed?
*/
gst_dxr3_video_sink_open_device(dxr3_video_sink);
GST_FLAG_SET (GST_ELEMENT(dxr3_video_sink), GST_ELEMENT_EVENT_AWARE);
gst_pad_set_event_function(dxr3_video_sink->sinkpad, gst_dxr3_video_sink_handle_event);
dxr3_video_sink->clock = NULL;
GST_ELEMENT(dxr3_video_sink)->setclockfunc = gst_dxr3_video_sink_set_clock;
}
static gboolean
gst_dxr3_video_sink_handle_event(GstPad *pad, GstEvent *event)
{
GstEventType type;
type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
switch (type) {
case GST_EVENT_SEEK:
g_print("seek event\n\n");
break;
case GST_EVENT_NEW_MEDIA:
g_print("new media event\n\n");
break;
case GST_EVENT_FLUSH:
g_print("flush event\n\n");
break;
default:
g_print("event\n\n");
gst_pad_event_default (pad, event);
break;
}
return TRUE;
}
static void
gst_dxr3_video_sink_chain (GstPad *pad, GstBuffer *buf)
{
GstDxr3VideoSink *dxr3_video_sink;
long pts;
/* Some of these checks are of dubious value, since if there were not
* already true, the chain function would never be called.
*/
g_return_if_fail(pad != NULL);
g_return_if_fail(GST_IS_PAD(pad));
g_return_if_fail(buf != NULL);
dxr3_video_sink = GST_DXR3_VIDEO_SINK(gst_pad_get_parent (pad));
g_return_if_fail(dxr3_video_sink != NULL);
g_return_if_fail(GST_IS_DXR3_VIDEO_SINK(dxr3_video_sink));
/* Copy the data in the incoming buffer onto the device. */
fwrite(GST_BUFFER_DATA (buf), 1, GST_BUFFER_SIZE (buf), dxr3_video_sink->device);
pts = (long)GST_BUFFER_TIMESTAMP(buf);
if (-1 == ioctl((int)dxr3_video_sink->device, EM8300_IOCTL_VIDEO_SETPTS, &pts)){
GST_DEBUG(0, "FAILED call to EM8300_IOCTL_VIDEO_SETPTS\n");
}
gst_buffer_unref (buf);
}
static void
gst_dxr3_video_sink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstDxr3VideoSink *dxr3_video_sink;
int device;
gchar *device_path;
int tv_mode_ioctl, aspect_ratio_ioctl;
g_return_if_fail(GST_IS_DXR3_VIDEO_SINK(object));
dxr3_video_sink = GST_DXR3_VIDEO_SINK(object);
switch (prop_id) {
case ARG_TV_MODE:
device_path = gst_dxr3_video_sink_get_control_device(dxr3_video_sink);
device = open(device_path, O_WRONLY);
if (device == -1){
GST_DEBUG(0, "failed to open control device\n");
break;
}
switch(g_value_get_int(value)){
case 0:
tv_mode_ioctl = EM8300_VIDEOMODE_NTSC;
break;
case 1:
tv_mode_ioctl = EM8300_VIDEOMODE_PAL;
break;
case 2:
tv_mode_ioctl = EM8300_VIDEOMODE_PAL60;
break;
}
if (-1 == ioctl(device, EM8300_IOCTL_SET_VIDEOMODE, &tv_mode_ioctl)){
GST_DEBUG (0,"failed to set tv-mode\n");
}
close(device);
break;
case ARG_DEVICE:
dxr3_video_sink->device_number = g_value_get_int(value);
gst_dxr3_video_sink_open_device(dxr3_video_sink);
break;
case ARG_ASPECT_RATIO:
device_path = gst_dxr3_video_sink_get_control_device(dxr3_video_sink);
device = open(device_path, O_WRONLY);
if (device == -1){
GST_DEBUG(0, "failed to open control device\n");
break;
}
switch(g_value_get_enum(value)){
case 0:
aspect_ratio_ioctl = EM8300_ASPECTRATIO_4_3;
break;
case 1:
aspect_ratio_ioctl = EM8300_ASPECTRATIO_16_9;
break;
}
if (-1 == ioctl(device, EM8300_IOCTL_SET_ASPECTRATIO, &aspect_ratio_ioctl)){
GST_DEBUG(0, "failed to set aspect-ratio\n");
}
break;
default:
break;
}
}
static void
gst_dxr3_video_sink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstDxr3VideoSink *dxr3_video_sink;
gint device;
gchar *device_path;
int tv_mode_ioctl, aspect_ratio_ioctl;
g_return_if_fail(GST_IS_DXR3_VIDEO_SINK(object));
dxr3_video_sink = GST_DXR3_VIDEO_SINK(object);
switch (prop_id) {
case ARG_TV_MODE:
device_path = gst_dxr3_video_sink_get_control_device(dxr3_video_sink);
tv_mode_ioctl = 0;
device = open(device_path, O_WRONLY);
if (-1 == device){
GST_DEBUG(0, "failed to open control device\n");
break;
}
if (-1 == ioctl(device, EM8300_IOCTL_GET_VIDEOMODE, &tv_mode_ioctl)){
GST_DEBUG(0, "failed to get tv-mode\n");
}
close(device);
switch(tv_mode_ioctl){
case EM8300_VIDEOMODE_NTSC:
g_value_set_enum(value, 0);
break;
case EM8300_VIDEOMODE_PAL:
g_value_set_enum(value, 1);
break;
case EM8300_VIDEOMODE_PAL60:
g_value_set_enum(value, 2);
break;
}
break;
case ARG_DEVICE:
g_value_set_int(value, dxr3_video_sink->device_number);
break;
case ARG_ASPECT_RATIO:
device_path = gst_dxr3_video_sink_get_control_device(dxr3_video_sink);
aspect_ratio_ioctl = 0;
device = open(device_path, O_WRONLY);
if (-1 == device){
GST_DEBUG(0, "failed to open control device\n");
break;
}
if (-1 == ioctl(device, EM8300_IOCTL_GET_ASPECTRATIO, &aspect_ratio_ioctl)){
GST_DEBUG(0, "failed to get aspect ratio\n");
}
close(device);
switch(aspect_ratio_ioctl){
case EM8300_ASPECTRATIO_4_3:
g_value_set_enum(value, 0);
break;
case EM8300_ASPECTRATIO_16_9:
g_value_set_enum(value, 1);
break;
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}