gstreamer/ext/swfdec/gstswfdec.c
Jan Schmidt d3f5bc20af Don't return SUCCESS from the state change when the parent call fails
Original commit message from CVS:
Don't return SUCCESS from the state change when the parent call fails
2005-01-16 11:07:45 +00:00

616 lines
16 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2002,2003> David A. 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 "gstswfdec.h"
#include <string.h>
#include <gst/video/video.h>
#include <swfdec_buffer.h>
/* elementfactory information */
static GstElementDetails gst_swfdec_details =
GST_ELEMENT_DETAILS ("SWF video decoder",
"Codec/Decoder/Video",
"Uses libswfdec to decode Flash video streams",
"David Schleef <ds@schleef.org>");
/* Swfdec signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
/* FILL ME */
};
static GstStaticPadTemplate video_template_factory =
GST_STATIC_PAD_TEMPLATE ("video_00",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx)
);
static GstStaticPadTemplate audio_template_factory =
GST_STATIC_PAD_TEMPLATE ("audio_00",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"rate = (int) 44100, "
"channels = (int) 2, "
"endianness = (int) BYTE_ORDER, "
"width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
);
static GstStaticPadTemplate sink_template_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-shockwave-flash")
);
static void gst_swfdec_base_init (gpointer g_class);
static void gst_swfdec_class_init (GstSwfdecClass * klass);
static void gst_swfdec_init (GstSwfdec * swfdec);
static void gst_swfdec_dispose (GObject * object);
static void gst_swfdec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_swfdec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_swfdec_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_swfdec_src_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value);
static const GstQueryType *gst_swfdec_get_query_types (GstPad * pad);
static const GstEventMask *gst_swfdec_get_event_masks (GstPad * pad);
static GstElementStateReturn gst_swfdec_change_state (GstElement * element);
static GstElementClass *parent_class = NULL;
GType
gst_swfdec_get_type (void)
{
static GType swfdec_type = 0;
if (!swfdec_type) {
static const GTypeInfo swfdec_info = {
sizeof (GstSwfdecClass),
gst_swfdec_base_init,
NULL,
(GClassInitFunc) gst_swfdec_class_init,
NULL,
NULL,
sizeof (GstSwfdec),
0,
(GInstanceInitFunc) gst_swfdec_init,
};
swfdec_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstSwfdec", &swfdec_info, 0);
}
return swfdec_type;
}
static void
gst_swfdec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &gst_swfdec_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&video_template_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&audio_template_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_template_factory));
}
static void
gst_swfdec_class_init (GstSwfdecClass * 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_swfdec_set_property;
gobject_class->get_property = gst_swfdec_get_property;
gobject_class->dispose = gst_swfdec_dispose;
gstelement_class->change_state = gst_swfdec_change_state;
}
static GstCaps *
gst_swfdec_video_getcaps (GstPad * pad)
{
GstSwfdec *swfdec;
GstCaps *caps;
swfdec = GST_SWFDEC (gst_pad_get_parent (pad));
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
if (swfdec->have_format) {
gst_caps_set_simple (caps,
"framerate", G_TYPE_DOUBLE, swfdec->frame_rate, NULL);
}
return caps;
}
static GstPadLinkReturn
gst_swfdec_video_link (GstPad * pad, const GstCaps * caps)
{
GstSwfdec *swfdec;
GstStructure *structure;
int width, height;
int ret;
swfdec = GST_SWFDEC (gst_pad_get_parent (pad));
if (!swfdec->have_format) {
return GST_PAD_LINK_DELAYED;
}
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
g_print ("setting size to %d x %d\n", width, height);
ret = swfdec_decoder_set_image_size (swfdec->decoder, width, height);
if (ret == SWF_OK) {
swfdec->width = width;
swfdec->height = height;
return GST_PAD_LINK_OK;
}
return GST_PAD_LINK_REFUSED;
}
static void
gst_swfdec_buffer_free (SwfdecBuffer * buf, void *priv)
{
gst_buffer_unref (GST_BUFFER (priv));
}
static SwfdecBuffer *
gst_swfdec_buffer_to_swf (GstBuffer * buffer)
{
SwfdecBuffer *sbuf;
sbuf = swfdec_buffer_new_with_data (GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer));
sbuf->free = gst_swfdec_buffer_free;
sbuf->priv = buffer;
return sbuf;
}
static void
gst_swfdec_loop (GstElement * element)
{
GstSwfdec *swfdec;
GstBuffer *buf = NULL;
int ret;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_SWFDEC (element));
swfdec = GST_SWFDEC (element);
if (!swfdec->videopad) {
}
ret = swfdec_decoder_parse (swfdec->decoder);
if (ret == SWF_NEEDBITS) {
buf = GST_BUFFER (gst_pad_pull (swfdec->sinkpad));
if (GST_IS_EVENT (buf)) {
switch (GST_EVENT_TYPE (buf)) {
case GST_EVENT_EOS:
swfdec_decoder_eof (swfdec->decoder);
GST_DEBUG ("got eos");
break;
default:
GST_DEBUG ("got other event");
break;
}
} else {
if (!GST_BUFFER_DATA (buf)) {
GST_DEBUG ("expected non-null buffer");
}
swfdec_decoder_add_buffer (swfdec->decoder,
gst_swfdec_buffer_to_swf (buf));
}
} else if (ret == SWF_CHANGE) {
GstCaps *caps;
GstPadLinkReturn link_ret;
swfdec_decoder_get_image_size (swfdec->decoder,
&swfdec->width, &swfdec->height);
swfdec_decoder_get_rate (swfdec->decoder, &swfdec->rate);
swfdec->interval = GST_SECOND / swfdec->rate;
caps = gst_caps_copy (gst_pad_get_pad_template_caps (swfdec->videopad));
swfdec_decoder_get_rate (swfdec->decoder, &swfdec->frame_rate);
gst_caps_set_simple (caps,
"framerate", G_TYPE_DOUBLE, swfdec->frame_rate,
"height", G_TYPE_INT, swfdec->height,
"width", G_TYPE_INT, swfdec->width, NULL);
link_ret = gst_pad_try_set_caps (swfdec->videopad, caps);
if (GST_PAD_LINK_SUCCESSFUL (link_ret)) {
/* good */
} else {
GST_ELEMENT_ERROR (swfdec, CORE, NEGOTIATION, (NULL), (NULL));
return;
}
swfdec->have_format = TRUE;
} else if (ret == SWF_EOF) {
SwfdecBuffer *audio_buffer;
SwfdecBuffer *video_buffer;
GstBuffer *videobuf;
GstBuffer *audiobuf;
gboolean ret;
ret = swfdec_render_iterate (swfdec->decoder);
if (!ret) {
gst_pad_push (swfdec->videopad, GST_DATA (gst_event_new (GST_EVENT_EOS)));
gst_pad_push (swfdec->audiopad, GST_DATA (gst_event_new (GST_EVENT_EOS)));
gst_element_set_eos (GST_ELEMENT (swfdec));
return;
}
if (swfdec->send_discont) {
GstEvent *event;
swfdec->timestamp = swfdec_render_get_frame_index (swfdec->decoder) *
swfdec->interval;
GST_DEBUG ("sending discont %" G_GINT64_FORMAT, swfdec->timestamp);
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
swfdec->timestamp, GST_FORMAT_UNDEFINED);
gst_pad_push (swfdec->videopad, GST_DATA (event));
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
swfdec->timestamp, GST_FORMAT_UNDEFINED);
gst_pad_push (swfdec->audiopad, GST_DATA (event));
swfdec->send_discont = FALSE;
}
GST_DEBUG ("pushing image/sound %" G_GINT64_FORMAT, swfdec->timestamp);
video_buffer = swfdec_render_get_image (swfdec->decoder);
videobuf = gst_buffer_new ();
GST_BUFFER_DATA (videobuf) = video_buffer->data;
GST_BUFFER_SIZE (videobuf) = video_buffer->length;
GST_BUFFER_TIMESTAMP (videobuf) = swfdec->timestamp;
gst_pad_push (swfdec->videopad, GST_DATA (videobuf));
audio_buffer = swfdec_render_get_audio (swfdec->decoder);
audiobuf = gst_buffer_new ();
GST_BUFFER_DATA (audiobuf) = audio_buffer->data;
GST_BUFFER_SIZE (audiobuf) = audio_buffer->length;
GST_BUFFER_TIMESTAMP (audiobuf) = swfdec->timestamp;
gst_pad_push (swfdec->audiopad, GST_DATA (audiobuf));
swfdec->timestamp += swfdec->interval;
}
}
static void
gst_swfdec_init (GstSwfdec * swfdec)
{
/* create the sink and src pads */
swfdec->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&sink_template_factory), "sink");
gst_element_add_pad (GST_ELEMENT (swfdec), swfdec->sinkpad);
swfdec->videopad =
gst_pad_new_from_template (gst_static_pad_template_get
(&video_template_factory), "video_00");
gst_pad_set_query_function (swfdec->videopad, gst_swfdec_src_query);
gst_pad_set_getcaps_function (swfdec->videopad, gst_swfdec_video_getcaps);
gst_pad_set_link_function (swfdec->videopad, gst_swfdec_video_link);
gst_pad_set_event_function (swfdec->videopad, gst_swfdec_src_event);
gst_pad_set_event_mask_function (swfdec->videopad,
gst_swfdec_get_event_masks);
gst_pad_set_query_type_function (swfdec->videopad,
gst_swfdec_get_query_types);
gst_element_add_pad (GST_ELEMENT (swfdec), swfdec->videopad);
swfdec->audiopad =
gst_pad_new_from_template (gst_static_pad_template_get
(&audio_template_factory), "audio_00");
gst_pad_set_query_function (swfdec->audiopad, gst_swfdec_src_query);
gst_pad_set_event_function (swfdec->audiopad, gst_swfdec_src_event);
gst_pad_set_event_mask_function (swfdec->audiopad,
gst_swfdec_get_event_masks);
gst_pad_set_query_type_function (swfdec->audiopad,
gst_swfdec_get_query_types);
gst_element_add_pad (GST_ELEMENT (swfdec), swfdec->audiopad);
gst_element_set_loop_function (GST_ELEMENT (swfdec), gst_swfdec_loop);
/* initialize the swfdec decoder state */
swfdec->decoder = swfdec_decoder_new ();
g_return_if_fail (swfdec->decoder != NULL);
swfdec_decoder_set_colorspace (swfdec->decoder, SWF_COLORSPACE_RGB888);
GST_FLAG_SET (GST_ELEMENT (swfdec), GST_ELEMENT_EVENT_AWARE);
swfdec->frame_rate = 0.;
}
static void
gst_swfdec_dispose (GObject * object)
{
GstSwfdec *swfdec = GST_SWFDEC (object);
swfdec_decoder_free (swfdec->decoder);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static const GstQueryType *
gst_swfdec_get_query_types (GstPad * pad)
{
static const GstQueryType gst_swfdec_query_types[] = {
GST_QUERY_TOTAL,
GST_QUERY_POSITION,
0
};
return gst_swfdec_query_types;
}
static gboolean
gst_swfdec_src_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value)
{
gboolean res = TRUE;
GstSwfdec *swfdec;
swfdec = GST_SWFDEC (gst_pad_get_parent (pad));
switch (type) {
case GST_QUERY_TOTAL:
{
switch (*format) {
case GST_FORMAT_TIME:
{
int n_frames;
int ret;
res = FALSE;
ret = swfdec_decoder_get_n_frames (swfdec->decoder, &n_frames);
if (ret == SWF_OK) {
*value = n_frames * swfdec->interval;
res = TRUE;
}
break;
}
default:
res = FALSE;
break;
}
break;
}
case GST_QUERY_POSITION:
{
switch (*format) {
case GST_FORMAT_TIME:
*value = swfdec_render_get_frame_index (swfdec->decoder) *
swfdec->interval;
res = TRUE;
default:
res = FALSE;
break;
}
break;
}
default:
res = FALSE;
break;
}
return res;
}
static const GstEventMask *
gst_swfdec_get_event_masks (GstPad * pad)
{
static const GstEventMask gst_swfdec_event_masks[] = {
{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_FLUSH},
{0,}
};
return gst_swfdec_event_masks;
}
static gboolean
gst_swfdec_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
GstSwfdec *swfdec;
//static const GstFormat formats[] = { GST_FORMAT_TIME, GST_FORMAT_BYTES };
#define MAX_SEEK_FORMATS 1 /* we can only do time seeking for now */
//gint i;
swfdec = GST_SWFDEC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
/* the all-formats seek logic */
case GST_EVENT_SEEK:
{
int new_frame;
int ret;
int n_frames;
new_frame = event->event_data.seek.offset / swfdec->interval;
ret = swfdec_decoder_get_n_frames (swfdec->decoder, &n_frames);
if (new_frame >= 0 && new_frame < n_frames) {
GstEvent *event;
GST_DEBUG ("seeking to frame %d\n", new_frame);
swfdec_render_seek (swfdec->decoder, new_frame);
GST_DEBUG ("sending flush event\n");
event = gst_event_new (GST_EVENT_FLUSH);
gst_pad_push (swfdec->videopad, GST_DATA (event));
event = gst_event_new (GST_EVENT_FLUSH);
gst_pad_push (swfdec->audiopad, GST_DATA (event));
swfdec->send_discont = TRUE;
swfdec->seek_frame = new_frame;
}
res = TRUE;
break;
}
default:
res = FALSE;
break;
}
gst_event_unref (event);
return res;
}
static GstElementStateReturn
gst_swfdec_change_state (GstElement * element)
{
GstSwfdec *swfdec = GST_SWFDEC (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
{
//gst_swfdec_vo_open (swfdec);
//swfdec_decoder_new (swfdec->decoder, swfdec->accel, swfdec->vo);
//swfdec->decoder->is_sequence_needed = 1;
//swfdec->decoder->frame_rate_code = 0;
swfdec->timestamp = 0;
swfdec->closed = FALSE;
/* reset the initial video state */
swfdec->have_format = FALSE;
swfdec->format = -1;
swfdec->width = -1;
swfdec->height = -1;
swfdec->first = TRUE;
break;
}
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
/* if we are not closed by an EOS event do so now, this cen send a few frames but
* we are prepared to not really send them (see above) */
if (!swfdec->closed) {
/*swf_close (swfdec->decoder); */
swfdec->closed = TRUE;
}
//gst_swfdec_vo_destroy (swfdec);
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
}
static void
gst_swfdec_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstSwfdec *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_SWFDEC (object));
src = GST_SWFDEC (object);
switch (prop_id) {
default:
break;
}
}
static void
gst_swfdec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstSwfdec *swfdec;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_SWFDEC (object));
swfdec = GST_SWFDEC (object);
switch (prop_id) {
default:
break;
}
}
void
art_warn (const char *fmt, ...)
{
GST_ERROR ("caught art_warn");
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "swfdec", GST_RANK_PRIMARY,
GST_TYPE_SWFDEC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"swfdec",
"Uses libswfdec to decode Flash video streams",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)