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gst/videotestsrc/gstvideotestsrc.*: Implement seeking in videotestsrc.

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Original commit message from CVS:
* gst/videotestsrc/gstvideotestsrc.c:
(gst_video_test_src_class_init), (gst_video_test_src_init),
(gst_video_test_src_parse_caps), (gst_video_test_src_query),
(gst_video_test_src_do_seek), (gst_video_test_src_is_seekable),
(gst_video_test_src_create):
* gst/videotestsrc/gstvideotestsrc.h:
Implement seeking in videotestsrc.
Small cleanups.
This commit is contained in:
Wim Taymans 2005-12-12 15:09:55 +00:00
parent d02b57f7e0
commit eb9cd91b27
3 changed files with 121 additions and 68 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2005-12-12 Wim Taymans <wim@fluendo.com>
* gst/videotestsrc/gstvideotestsrc.c:
(gst_video_test_src_class_init), (gst_video_test_src_init),
(gst_video_test_src_parse_caps), (gst_video_test_src_query),
(gst_video_test_src_do_seek), (gst_video_test_src_is_seekable),
(gst_video_test_src_create):
* gst/videotestsrc/gstvideotestsrc.h:
Implement seeking in videotestsrc.
Small cleanups.
2005-12-12 Wim Taymans <wim@fluendo.com>
* ext/cdparanoia/Makefile.am:

174
gst/videotestsrc/gstvideotestsrc.c
View file

@ -79,7 +79,10 @@ static GstCaps *gst_video_test_src_getcaps (GstBaseSrc * bsrc);
static gboolean gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
static void gst_video_test_src_src_fixate (GstPad * pad, GstCaps * caps);
static gboolean gst_video_test_src_event (GstBaseSrc * bsrc, GstEvent * event);
static gboolean gst_video_test_src_is_seekable (GstBaseSrc * psrc);
static gboolean gst_video_test_src_do_seek (GstBaseSrc * bsrc,
GstSegment * segment);
static gboolean gst_video_test_src_query (GstBaseSrc * bsrc, GstQuery * query);
static void gst_video_test_src_get_times (GstBaseSrc * basesrc,
GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
@ -147,9 +150,11 @@ gst_video_test_src_class_init (GstVideoTestSrcClass * klass)
gstbasesrc_class->get_caps = gst_video_test_src_getcaps;
gstbasesrc_class->set_caps = gst_video_test_src_setcaps;
gstbasesrc_class->event = gst_video_test_src_event;
gstbasesrc_class->is_seekable = gst_video_test_src_is_seekable;
gstbasesrc_class->do_seek = gst_video_test_src_do_seek;
gstbasesrc_class->query = gst_video_test_src_query;
gstbasesrc_class->get_times = gst_video_test_src_get_times;
gstpushsrc_class->create = gst_video_test_src_create;
}
@ -162,10 +167,10 @@ gst_video_test_src_init (GstVideoTestSrc * src, GstVideoTestSrcClass * g_class)
gst_video_test_src_set_pattern (src, GST_VIDEO_TEST_SRC_SMPTE);
src->segment_start_frame = -1;
src->segment_end_frame = -1;
src->timestamp_offset = 0;
/* we operate in time */
gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
}
@ -290,24 +295,32 @@ gst_video_test_src_parse_caps (const GstCaps * caps,
structure = gst_caps_get_structure (caps, 0);
*fourcc = paintinfo_find_by_structure (structure);
if (!*fourcc) {
g_critical ("videotestsrc format not found");
return FALSE;
}
if (!(*fourcc = paintinfo_find_by_structure (structure)))
goto unknown_format;
ret = gst_structure_get_int (structure, "width", width);
ret &= gst_structure_get_int (structure, "height", height);
framerate = gst_structure_get_value (structure, "framerate");
if (framerate) {
*rate_numerator = gst_value_get_fraction_numerator (framerate);
*rate_denominator = gst_value_get_fraction_denominator (framerate);
} else
ret = FALSE;
goto no_framerate;
return ret;
/* ERRORS */
unknown_format:
{
GST_DEBUG ("videotestsrc format not found");
return FALSE;
}
no_framerate:
{
GST_DEBUG ("videotestsrc no framerate given");
return FALSE;
}
}
static gboolean
@ -339,58 +352,67 @@ gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
}
static gboolean
gst_video_test_src_event (GstBaseSrc * bsrc, GstEvent * event)
gst_video_test_src_query (GstBaseSrc * bsrc, GstQuery * query)
{
gboolean res = TRUE;
GstVideoTestSrc *videotestsrc;
gint64 new_n_frames;
gboolean res;
GstVideoTestSrc *src;
videotestsrc = GST_VIDEO_TEST_SRC (bsrc);
new_n_frames = videotestsrc->n_frames;
src = GST_VIDEO_TEST_SRC (bsrc);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONVERT:
{
GstFormat format;
GstSeekType cur_type, stop_type;
GstSeekFlags flags;
gint64 cur, stop;
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
gst_event_parse_seek (event, NULL, &format, &flags, &cur_type, &cur,
&stop_type, &stop);
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
if (src_fmt == dest_fmt) {
dest_val = src_val;
goto done;
}
switch (format) {
case GST_FORMAT_TIME:
new_n_frames = cur * videotestsrc->rate_numerator /
(videotestsrc->rate_denominator * GST_SECOND);
videotestsrc->segment_start_frame = new_n_frames;
videotestsrc->segment_end_frame =
stop * videotestsrc->rate_numerator /
(videotestsrc->rate_denominator * GST_SECOND);
videotestsrc->segment = flags & GST_SEEK_FLAG_SEGMENT;
break;
switch (src_fmt) {
case GST_FORMAT_DEFAULT:
new_n_frames = cur;
videotestsrc->segment_start_frame = new_n_frames;
videotestsrc->segment_end_frame = stop;
videotestsrc->segment = flags & GST_SEEK_FLAG_SEGMENT;
switch (dest_fmt) {
case GST_FORMAT_TIME:
/* frames to time */
dest_val = gst_util_uint64_scale (src_val,
src->rate_denominator * GST_SECOND, src->rate_numerator);
break;
default:
goto error;
}
break;
case GST_FORMAT_TIME:
switch (dest_fmt) {
case GST_FORMAT_DEFAULT:
/* time to frames */
dest_val = gst_util_uint64_scale (src_val,
src->rate_numerator, src->rate_denominator * GST_SECOND);
break;
default:
goto error;
}
break;
default:
res = FALSE;
break;
goto error;
}
done:
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
res = TRUE;
break;
}
default:
res = FALSE;
break;
res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
}
if (videotestsrc->n_frames != new_n_frames) {
videotestsrc->n_frames = new_n_frames;
}
return res;
/* ERROR */
error:
{
GST_DEBUG_OBJECT (src, "query failed");
return FALSE;
}
}
static void
@ -416,6 +438,34 @@ gst_video_test_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
}
}
static gboolean
gst_video_test_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment)
{
GstClockTime time;
GstVideoTestSrc *src;
src = GST_VIDEO_TEST_SRC (bsrc);
time = segment->time = segment->start;
/* now move to the time indicated */
src->n_frames = gst_util_uint64_scale (time,
src->rate_numerator, src->rate_denominator * GST_SECOND);
src->running_time = gst_util_uint64_scale (src->n_frames,
src->rate_denominator * GST_SECOND, src->rate_numerator);
g_assert (src->running_time <= time);
return TRUE;
}
static gboolean
gst_video_test_src_is_seekable (GstBaseSrc * psrc)
{
/* we're seekable... */
return TRUE;
}
static GstFlowReturn
gst_video_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
{
@ -423,10 +473,11 @@ gst_video_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
gulong newsize;
GstBuffer *outbuf;
GstFlowReturn res;
GstClockTime next_time;
src = GST_VIDEO_TEST_SRC (psrc);
if (src->fourcc == NULL)
if (src->fourcc == NULL || src->rate_numerator == 0)
goto not_negotiated;
newsize = gst_video_test_src_get_size (src, src->width, src->height);
@ -444,11 +495,7 @@ gst_video_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
if (res != GST_FLOW_OK)
goto no_buffer;
#else
res = GST_FLOW_OK;
outbuf = gst_buffer_new_and_alloc (newsize);
if (outbuf == NULL)
goto no_buffer;
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc)));
#endif
@ -456,16 +503,14 @@ gst_video_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
src->width, src->height);
GST_BUFFER_TIMESTAMP (outbuf) = src->timestamp_offset + src->running_time;
if (src->rate_numerator != 0) {
GST_BUFFER_DURATION (outbuf) = gst_util_uint64_scale_int (GST_SECOND,
src->rate_denominator, src->rate_numerator);
}
GST_BUFFER_OFFSET (outbuf) = src->n_frames;
src->n_frames++;
if (src->rate_numerator != 0) {
src->running_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->rate_denominator, src->rate_numerator);
}
GST_BUFFER_OFFSET_END (outbuf) = src->n_frames;
next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->rate_denominator, src->rate_numerator);
GST_BUFFER_DURATION (outbuf) = next_time - src->running_time;
src->running_time = next_time;
*buffer = outbuf;
@ -479,11 +524,12 @@ not_negotiated:
}
no_buffer:
{
GST_DEBUG_OBJECT (src, "could not allocate buffer, reason %s",
gst_flow_get_name (res));
return res;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{

4
gst/videotestsrc/gstvideotestsrc.h
View file

@ -65,10 +65,6 @@ struct _GstVideoTestSrc {
gint64 timestamp_offset; /* base offset */
GstClockTime running_time; /* total running time */
gint64 n_frames; /* total frames sent */
gint64 segment_start_frame;
gint64 segment_end_frame;
gboolean segment;
GstClockID clock_id;
void (*make_image) (GstVideoTestSrc *v, unsigned char *dest, int w, int h);
};