summaryrefslogtreecommitdiffstats
path: root/ext
diff options
context:
space:
mode:
Diffstat (limited to 'ext')
-rw-r--r--ext/swfdec/gstswfdec.c543
1 files changed, 61 insertions, 482 deletions
diff --git a/ext/swfdec/gstswfdec.c b/ext/swfdec/gstswfdec.c
index 5928c99a..666ca0ab 100644
--- a/ext/swfdec/gstswfdec.c
+++ b/ext/swfdec/gstswfdec.c
@@ -1,5 +1,6 @@
/* 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
@@ -44,22 +45,28 @@ enum {
};
GST_PAD_TEMPLATE_FACTORY (video_template_factory,
- "video_%02d",
+ "video_00",
GST_PAD_SRC,
- GST_PAD_SOMETIMES,
+ GST_PAD_ALWAYS,
GST_CAPS_NEW (
- "swfdec_src",
+ "swfdec_videosrc",
"video/raw",
- "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R','G','B',' ')),
- "width", GST_PROPS_INT_RANGE (16, 4096),
- "height", GST_PROPS_INT_RANGE (16, 4096)
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R','G','B',' ')),
+ "width", GST_PROPS_INT_RANGE (16, 4096),
+ "height", GST_PROPS_INT_RANGE (16, 4096),
+ "bpp", GST_PROPS_INT (24),
+ "depth", GST_PROPS_INT (24),
+ "endianness", GST_PROPS_INT (G_BIG_ENDIAN),
+ "red_mask", GST_PROPS_INT (0xff0000),
+ "green_mask", GST_PROPS_INT (0x00ff00),
+ "blue_mask", GST_PROPS_INT (0x0000ff)
)
);
GST_PAD_TEMPLATE_FACTORY (audio_template_factory,
- "audio_%02d",
+ "audio_00",
GST_PAD_SRC,
- GST_PAD_SOMETIMES,
+ GST_PAD_ALWAYS,
GST_CAPS_NEW (
"swfdec_audiosrc",
"audio/raw",
@@ -81,7 +88,7 @@ GST_PAD_TEMPLATE_FACTORY (sink_template_factory,
GST_CAPS_NEW (
"swfdec_sink",
"application/x-shockwave-flash",
- "format", GST_PROPS_STRING("SWF")
+ NULL
)
);
@@ -94,11 +101,6 @@ 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);
-#if 0
-static GstPad *
-gst_swfdec_request_new_pad (GstElement *element, GstPadTemplate *templ,
- const gchar *template);
-#endif
#if 0
static gboolean gst_swfdec_src_event (GstPad *pad, GstEvent *event);
@@ -113,15 +115,10 @@ static gboolean gst_swfdec_convert_src (GstPad *pad, GstFormat src_format, gint
GstFormat *dest_format, gint64 *dest_value);
#endif
-static GstElementStateReturn
- gst_swfdec_change_state (GstElement *element);
+static GstElementStateReturn gst_swfdec_change_state (GstElement *element);
-#if 0
-static void gst_swfdec_chain (GstPad *pad, GstBuffer *buffer);
-#endif
static GstElementClass *parent_class = NULL;
-/*static guint gst_swfdec_signals[LAST_SIGNAL] = { 0 };*/
GType
gst_swfdec_get_type (void)
@@ -165,302 +162,40 @@ gst_swfdec_class_init(GstSwfdecClass *klass)
gobject_class->dispose = gst_swfdec_dispose;
gstelement_class->change_state = gst_swfdec_change_state;
- //gstelement_class->request_new_pad = gst_swfdec_request_new_pad;
}
-#if 0
-static void
-gst_swfdec_vo_frame_draw (vo_frame_t * frame)
+static GstCaps *gst_swfdec_videosrc_getcaps(GstPad *pad, GstCaps *caps)
{
- gst_swfdec_vo_instance_t *_instance;
- gst_swfdec_vo_frame_t *_frame;
GstSwfdec *swfdec;
- gint64 pts = -1;
-
- g_return_if_fail (frame != NULL);
- g_return_if_fail (((gst_swfdec_vo_frame_t *)frame)->buffer != NULL);
-
- _frame = (gst_swfdec_vo_frame_t *)frame;
- _instance = (gst_swfdec_vo_instance_t *)frame->instance;
-
- swfdec = GST_SWFDEC (_instance->swfdec);
-
-
- /* we have to be carefull here. we do swf_close in the READY state
- * but it can send a few frames still. We have to make sure we are playing
- * when we send frames. we do have to free those last frames though */
- if (GST_STATE (GST_ELEMENT (swfdec)) != GST_STATE_PLAYING) {
- gst_buffer_unref (_frame->buffer);
- /* pretend we have sent the frame */
- _frame->sent = TRUE;
- return;
- }
-
- if (swfdec->frame_rate_code != swfdec->decoder->frame_rate_code)
- {
- swfdec->frame_rate_code = swfdec->decoder->frame_rate_code;
-
- g_object_notify (G_OBJECT (swfdec), "frame_rate");
- }
-
- pts = swfdec->next_time - 3 * (GST_SECOND / video_rates[swfdec->decoder->frame_rate_code]);
-
- GST_BUFFER_TIMESTAMP (_frame->buffer) = pts;
-
- GST_DEBUG (0, "out: %lld %d %lld", GST_BUFFER_TIMESTAMP (_frame->buffer),
- swfdec->decoder->frame_rate_code,
- (long long)(GST_SECOND / video_rates[swfdec->decoder->frame_rate_code]));
-
- swfdec->next_time += (GST_SECOND / video_rates[swfdec->decoder->frame_rate_code]) + swfdec->adjust;
-
- GST_BUFFER_FLAG_SET (_frame->buffer, GST_BUFFER_READONLY);
- swfdec->frames_per_PTS++;
- swfdec->first = FALSE;
- _frame->sent = TRUE;
- swfdec->total_frames++;
- gst_pad_push (swfdec->videopad, _frame->buffer);
-}
-#endif
-
-#if 0
-static int
-gst_swfdec_setup (GstSwfdec *swfdec, int width, int height)
-{
- g_return_val_if_fail (swfdec != NULL, -1);
-
- GST_INFO (GST_CAT_PLUGIN_INFO, "VO: setup w=%d h=%d", width, height);
-
- swfdec->width = width;
- swfdec->height = height;
- swfdec->total_frames = 0;
-
- gst_pad_try_set_caps (swfdec->videopad,
- gst_caps_new (
- "swfdec_caps",
- "video/raw",
- gst_props_new (
- "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R','G','B',' ')),
- "width", GST_PROPS_INT (width),
- "height", GST_PROPS_INT (height),
- NULL)));
-
-
- return 0;
-}
-#endif
-
-
-#if 0
-static void
-gst_swfdec_close (GstSwfdec *swfdec)
-{
- GST_INFO (GST_CAT_PLUGIN_INFO, "VO: close");
+ GstCaps *c;
- /* FIXME */
-}
-#endif
-
-#if 0
-static vo_frame_t *
-gst_swfdec_vo_get_frame (vo_instance_t * instance, int flags)
-{
- gst_swfdec_vo_instance_t * _instance;
- gst_swfdec_vo_frame_t *frame;
- size_t size0;
- uint8_t *data = NULL;
- GstSwfdec *swfdec;
-
- g_return_val_if_fail (instance != NULL, NULL);
-
- GST_INFO (GST_CAT_PLUGIN_INFO, "VO: get_frame");
-
- _instance = (gst_swfdec_vo_instance_t *)instance;
-
- swfdec = _instance->swfdec;
-
- if (flags & VO_PREDICTION_FLAG) {
- _instance->prediction_index ^= 1;
- frame = &_instance->frames[_instance->prediction_index];
- } else {
- frame = &_instance->frames[2];
- }
-
- /* we are reusing this frame */
- if (frame->buffer != NULL) {
- /* if the frame wasn't sent, we have to unref twice */
- if (!frame->sent)
- gst_buffer_unref (frame->buffer);
- gst_buffer_unref (frame->buffer);
- frame->buffer = NULL;
- }
-
- size0 = swfdec->width * swfdec->height / 4;
-
- if (swfdec->pool) {
- frame->buffer = gst_buffer_new_from_pool (swfdec->pool, 0, 0);
- } else {
- size_t size = 6 * size0;
- size_t offset;
- GstBuffer *parent;
-
- parent = gst_buffer_new ();
-
- GST_BUFFER_SIZE(parent) = size + 0x10;
- GST_BUFFER_DATA(parent) = data = g_new(uint8_t, size + 0x10);
-
- offset = 0x10 - (((unsigned long)data) & 0xf);
- frame->buffer = gst_buffer_create_sub(parent, offset, size);
-
- gst_buffer_unref(parent);
- }
- data = GST_BUFFER_DATA(frame->buffer);
-
- /* need ref=2 */
- /* 1 - unref when reusing this frame */
- /* 2 - unref when other elements done with buffer */
- gst_buffer_ref (frame->buffer);
-
- frame->vo.base[0] = data;
- frame->vo.base[1] = data + 4 * size0;
- frame->vo.base[2] = data + 5 * size0;
- /*printf("base[0]=%p\n", frame->vo.base[0]); */
- frame->sent = FALSE;
-
- return (vo_frame_t *)frame;
-}
-#endif
-
-#if 0
-static void
-gst_swfdec_vo_open (GstSwfdec *swfdec)
-{
- gst_swfdec_vo_instance_t * instance;
- gint i,j;
-
- GST_INFO (GST_CAT_PLUGIN_INFO, "VO: open");
-
- instance = g_new (gst_swfdec_vo_instance_t, 1);
-
- instance->vo.setup = gst_swfdec_vo_setup;
- instance->vo.close = gst_swfdec_vo_close;
- instance->vo.get_frame = gst_swfdec_vo_get_frame;
- instance->swfdec = swfdec;
-
- for (i=0; i<NUM_FRAMES; i++) {
- for (j=0; j<3; j++) {
- instance->frames[j].vo.base[j] = NULL;
- }
- instance->frames[i].vo.copy = NULL;
- instance->frames[i].vo.field = NULL;
- instance->frames[i].vo.draw = gst_swfdec_vo_frame_draw;
- instance->frames[i].vo.instance = (vo_instance_t *)instance;
- instance->frames[i].buffer = NULL;
- }
-
- swfdec->vo = (vo_instance_t *) instance;
-}
-#endif
-
-#if 0
-static void
-gst_swfdec_vo_destroy (GstSwfdec *swfdec)
-{
- gst_swfdec_vo_instance_t * instance;
- gint i;
-
- GST_INFO (GST_CAT_PLUGIN_INFO, "VO: destroy");
+ swfdec = GST_SWFDEC (gst_pad_get_parent (pad));
- instance = (gst_swfdec_vo_instance_t *) swfdec->vo;
-
- for (i=0; i<NUM_FRAMES; i++) {
- if (instance->frames[i].buffer) {
- if (!instance->frames[i].sent) {
- gst_buffer_unref (instance->frames[i].buffer);
- }
- gst_buffer_unref (instance->frames[i].buffer);
- }
+ c = GST_CAPS_NEW (
+ "swfdec_videosrc",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R','G','B',' ')),
+ "width", GST_PROPS_INT_RANGE (16, 4096),
+ "height", GST_PROPS_INT_RANGE (16, 4096),
+ "bpp", GST_PROPS_INT (24),
+ "depth", GST_PROPS_INT (24),
+ "endianness", GST_PROPS_INT (G_BIG_ENDIAN),
+ "red_mask", GST_PROPS_INT (0xff0000),
+ "green_mask", GST_PROPS_INT (0x00ff00),
+ "blue_mask", GST_PROPS_INT (0x0000ff)
+ );
+
+ if(swfdec->height){
+ gst_caps_set(c,"height",GST_PROPS_INT(swfdec->height));
+ gst_caps_set(c,"width",GST_PROPS_INT(swfdec->width));
+
+ /* FIXME: this feels like a hack or bug workaround */
+ GST_PROPS_FLAG_SET(c->properties,GST_PROPS_FIXED);
+ GST_CAPS_FLAG_SET(c,GST_CAPS_FIXED);
}
- g_free (instance);
- swfdec->vo = NULL;
+ return c;
}
-#endif
-
-#if 0
-static GstPadLinkReturn
-gst_swfdec_connect(GstPad *pad, GstCaps *caps)
-{
- return GST_PAD_LINK_DELAYED;
-}
-#endif
-
-#if 0
-static void
-src_unlinked(GstPad *srcpad, GstPad *sinkpad, GstSwfdec *plugin)
-{
- GST_DEBUG(GST_CAT_PADS, "removing pad %s:%s",
- GST_DEBUG_PAD_NAME(srcpad));
-
- gst_element_remove_pad(GST_ELEMENT(plugin), srcpad);
-
- if(plugin->videopad == srcpad) plugin->videopad = NULL;
- if(plugin->audiopad == srcpad) plugin->audiopad = NULL;
-}
-#endif
-
-#if 0
-static GstPad *
-gst_swfdec_request_new_pad (GstElement *element, GstPadTemplate *templ,
- const gchar *template)
-{
- gchar *name;
- GstPad *srcpad;
- GstSwfdec *plugin;
-
- plugin = GST_SWFDEC(element);
-
- g_return_val_if_fail(plugin != NULL, NULL);
- g_return_val_if_fail(GST_IS_SWFDEC(plugin), NULL);
-
- if(templ->direction != GST_PAD_SRC){
- g_warning("swfdec: request new pad that is not SRC pad.\n");
- return NULL;
- }
-
-//printf("requesting pad %s %d\n",template,templ->name);
-#if 0
- if(strcmp("audio", template) == 0){
- g_print("swfdec adding pad audio_00\n");
-
- srcpad = gst_pad_new_from_template(templ, "audio_00");
- gst_element_add_pad(GST_ELEMENT(plugin), srcpad);
-
- g_signal_connect(G_OBJECT(srcpad), "unlinked",
- G_CALLBACK(src_unlinked), plugin);
- gst_pad_set_link_function(srcpad, gst_swfdec_connect);
- plugin->audiopad = srcpad;
- }else if(strcmp("video", template) == 0){
-#endif
- if(1){
- g_print("swfdec adding pad video_00\n");
-
- srcpad = gst_pad_new_from_template(templ, "video_00");
- gst_element_add_pad(GST_ELEMENT(plugin), srcpad);
-
- g_signal_connect(G_OBJECT(srcpad), "unlinked",
- G_CALLBACK(src_unlinked), plugin);
- gst_pad_set_link_function(srcpad, gst_swfdec_connect);
- plugin->videopad = srcpad;
- }else{
- g_warning("swfdec: request new pad with bad template\n");
- return NULL;
- }
-
- return srcpad;
-}
-#endif
-
-
static void
gst_swfdec_loop(GstElement *element)
@@ -475,53 +210,6 @@ gst_swfdec_loop(GstElement *element)
swfdec = GST_SWFDEC(element);
if(!swfdec->videopad){
- swfdec->videopad =
- gst_pad_new_from_template(
- GST_PAD_TEMPLATE_GET(video_template_factory),
- "video_00");
- gst_pad_set_query_function (swfdec->videopad,
- GST_DEBUG_FUNCPTR (gst_swfdec_src_query));
- swfdec->audiopad =
- gst_pad_new_from_template(
- GST_PAD_TEMPLATE_GET(audio_template_factory),
- "audio_00");
- gst_pad_set_query_function (swfdec->audiopad,
- GST_DEBUG_FUNCPTR (gst_swfdec_src_query));
-
-#if 0
- gst_pad_try_set_caps(swfdec->videopad,
- gst_pad_get_pad_template_caps(swfdec->videopad));
-#endif
-
- gst_pad_try_set_caps (swfdec->videopad,
- gst_caps_new (
- "swfdec_caps",
- "video/raw",
- gst_props_new (
- "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R','G','B',' ')),
- ///"width", GST_PROPS_INT (640),
- //"height", GST_PROPS_INT (480),
- "rate", GST_PROPS_INT(12),
- NULL)));
-
- gst_pad_try_set_caps (swfdec->audiopad,
- gst_caps_new (
- "swfdec_caps",
- "audio/raw",
- gst_props_new(
- "format", GST_PROPS_STRING("int"),
- "law", GST_PROPS_INT(0),
- "endianness", GST_PROPS_INT(G_BYTE_ORDER),
- "signed", GST_PROPS_BOOLEAN(TRUE),
- "width", GST_PROPS_INT(16),
- "depth", GST_PROPS_INT(16),
- "rate", GST_PROPS_INT (44100),
- "channels", GST_PROPS_INT (1),
- NULL)));
-
-printf("adding pad\n");
- gst_element_add_pad(element, swfdec->videopad);
- gst_element_add_pad(element, swfdec->audiopad);
}
ret = swfdec_decoder_parse(swfdec->state);
@@ -551,59 +239,10 @@ printf("adding pad\n");
&swfdec->width, &swfdec->height);
swfdec_decoder_get_rate(swfdec->state, &swfdec->rate);
swfdec->interval = GST_SECOND / swfdec->rate;
-#if G_BYTE_ORDER == 4321
-#define RED_MASK 0xff0000
-#define GREEN_MASK 0x00ff00
-#define BLUE_MASK 0x0000ff
-#else
-#define RED_MASK 0x0000ff
-#define GREEN_MASK 0x00ff00
-#define BLUE_MASK 0xff0000
-#endif
-#if 1
- gst_pad_try_set_caps(swfdec->videopad,
- gst_caps_new(
- "swfdec_caps",
- "video/raw",
- gst_props_new(
- "format", GST_PROPS_FOURCC(GST_MAKE_FOURCC('R','G','B',' ')),
- "width", GST_PROPS_INT(swfdec->width),
- "height", GST_PROPS_INT(swfdec->height),
- "bpp", GST_PROPS_INT (24),
- "depth", GST_PROPS_INT (24),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "red_mask", GST_PROPS_INT (RED_MASK),
- "green_mask", GST_PROPS_INT (GREEN_MASK),
- "blue_mask", GST_PROPS_INT (BLUE_MASK),
- NULL)));
-#else
+
+ gst_caps_debug(gst_swfdec_videosrc_getcaps(swfdec->videopad,NULL),"ack");
gst_pad_try_set_caps(swfdec->videopad,
- gst_caps_new(
- "swfdec_caps",
- "video/raw",
- gst_props_new(
- "format", GST_PROPS_FOURCC(GST_MAKE_FOURCC('R','G','B',' ')),
- "width", GST_PROPS_INT(swfdec->width),
- "height", GST_PROPS_INT(swfdec->height),
- "bpp", GST_PROPS_INT (16),
- "depth", GST_PROPS_INT (16),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- NULL)));
-#endif
- gst_pad_try_set_caps(swfdec->audiopad,
- gst_caps_new(
- "swfdec_caps",
- "audio/raw",
- gst_props_new(
- "format", GST_PROPS_STRING("int"),
- "law", GST_PROPS_INT(0),
- "endianness", GST_PROPS_INT(G_BYTE_ORDER),
- "signed", GST_PROPS_BOOLEAN(TRUE),
- "width", GST_PROPS_INT(16),
- "depth", GST_PROPS_INT(16),
- "rate", GST_PROPS_INT (44100),
- "channels", GST_PROPS_INT (1),
- NULL)));
+ gst_swfdec_videosrc_getcaps(swfdec->videopad,NULL));
return;
}
@@ -653,23 +292,23 @@ gst_swfdec_init (GstSwfdec *swfdec)
swfdec->sinkpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (sink_template_factory), "sink");
gst_element_add_pad (GST_ELEMENT (swfdec), swfdec->sinkpad);
- //gst_pad_set_chain_function (swfdec->sinkpad, gst_swfdec_chain);
- //gst_pad_set_convert_function (swfdec->sinkpad, gst_swfdec_convert_sink);
-#if 0
- swfdec->videopad = gst_pad_new_from_template (
- GST_PAD_TEMPLATE_GET (video_template_factory), "video_00");
- gst_element_add_pad (GST_ELEMENT (swfdec), swfdec->videopad);
-#endif
- //gst_pad_set_event_function (swfdec->videopad, GST_DEBUG_FUNCPTR (gst_swfdec_src_event));
- //gst_pad_set_query_function (swfdec->videopad, GST_DEBUG_FUNCPTR (gst_swfdec_src_query));
- //gst_pad_set_convert_function (swfdec->videopad, gst_swfdec_convert_src);
-
-#if 0
- swfdec->audiopad = gst_pad_new_from_template (
- GST_PAD_TEMPLATE_GET (audio_template_factory), "audio_00");
- gst_element_add_pad (GST_ELEMENT (swfdec), swfdec->audiopad);
-#endif
+ swfdec->videopad = gst_pad_new_from_template(
+ GST_PAD_TEMPLATE_GET(video_template_factory),
+ "video_00");
+ gst_pad_set_query_function (swfdec->videopad,
+ GST_DEBUG_FUNCPTR (gst_swfdec_src_query));
+ gst_pad_set_getcaps_function (swfdec->videopad,
+ GST_DEBUG_FUNCPTR (gst_swfdec_videosrc_getcaps));
+ gst_element_add_pad(GST_ELEMENT(swfdec), swfdec->videopad);
+
+ swfdec->audiopad = gst_pad_new_from_template(
+ GST_PAD_TEMPLATE_GET(audio_template_factory),
+ "audio_00");
+ gst_pad_set_query_function (swfdec->audiopad,
+ GST_DEBUG_FUNCPTR (gst_swfdec_src_query));
+
+ gst_element_add_pad(GST_ELEMENT(swfdec), swfdec->audiopad);
gst_element_set_loop_function(GST_ELEMENT(swfdec), gst_swfdec_loop);
@@ -694,66 +333,6 @@ gst_swfdec_dispose (GObject *object)
}
#if 0
-static void
-gst_swfdec_chain (GstPad *pad, GstBuffer *buf)
-{
- GstSwfdec *swfdec = GST_SWFDEC (gst_pad_get_parent (pad));
- guint32 size;
- guchar *data;
- gint ret;
- gint64 pts;
-
- GST_DEBUG (0, "SWFDEC: chain called");
-
- if (GST_IS_EVENT (buf)) {
- GstEvent *event = GST_EVENT (buf);
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_DISCONTINUOUS:
- {
- //gint64 value = GST_EVENT_DISCONT_OFFSET (event, 0).value;
- //swfdec->decoder->is_sequence_needed = 1;
- GST_DEBUG (GST_CAT_EVENT, "swfdec: discont\n");
- swfdec->first = TRUE;
- swfdec->timestamp = 0;
- gst_pad_event_default (pad, event);
- return;
- }
- case GST_EVENT_EOS:
- if (!swfdec->closed) {
- /* close flushes the last few frames */
- //swf_close (swfdec->state);
- swfdec->closed = TRUE;
- }
- default:
- gst_pad_event_default (pad, event);
- return;
- }
- }
-
- size = GST_BUFFER_SIZE (buf);
- data = GST_BUFFER_DATA (buf);
- pts = GST_BUFFER_TIMESTAMP (buf);
-
- GST_DEBUG (GST_CAT_CLOCK, "swfdec: pts %llu\n", pts);
-
- swfdec->timestamp += swfdec->interval;
-
-/* fprintf(stderr, "SWFDEC: in timestamp=%llu\n",GST_BUFFER_TIMESTAMP(buf)); */
-/* fprintf(stderr, "SWFDEC: have buffer of %d bytes\n",size); */
- ret = swfdec_decoder_addbits(swfdec->state, data, size);
-
- if(ret==SWF_IMAGE){
-
- }
-
-/*fprintf(stderr, "SWFDEC: decoded %d frames\n", num_frames);*/
-
- gst_buffer_unref(buf);
-}
-#endif
-
-#if 0
static gboolean
gst_swfdec_convert_sink (GstPad *pad, GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value)