static GstFlowReturn
gst_video_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
{
GstVideoTestSrc *src;
gulong newsize;
GstBuffer *outbuf;
GstFlowReturn res;
GstClockTime next_time;
src = GST_VIDEO_TEST_SRC (psrc);
if (G_UNLIKELY (src->fourcc == NULL))
goto not_negotiated;
/* 0 framerate and we are at the second frame, eos */
if (G_UNLIKELY (src->rate_numerator == 0 && src->n_frames == 1))
goto eos;
newsize = gst_video_test_src_get_size (src, src->width, src->height);
g_return_val_if_fail (newsize > 0, GST_FLOW_ERROR);
GST_LOG_OBJECT (src,
"creating buffer of %lu bytes with %dx%d image for frame %d", newsize,
src->width, src->height, (gint) src->n_frames);
#ifdef USE_PEER_BUFFERALLOC
res =
gst_pad_alloc_buffer_and_set_caps (GST_BASE_SRC_PAD (psrc),
GST_BUFFER_OFFSET_NONE, newsize, GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc)),
&outbuf);
if (res != GST_FLOW_OK)
goto no_buffer;
#else
outbuf = gst_buffer_new_and_alloc (newsize);
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc)));
#endif
if (src->pattern_type == GST_VIDEO_TEST_SRC_BLINK) {
if (src->n_frames & 0x1) {
gst_video_test_src_white (src, (void *) GST_BUFFER_DATA (outbuf),
src->width, src->height);
} else {
gst_video_test_src_black (src, (void *) GST_BUFFER_DATA (outbuf),
src->width, src->height);
}
} else {
src->make_image (src, (void *) GST_BUFFER_DATA (outbuf),
src->width, src->height);
}
GST_BUFFER_TIMESTAMP (outbuf) = src->timestamp_offset + src->running_time;
GST_BUFFER_OFFSET (outbuf) = src->n_frames;
src->n_frames++;
GST_BUFFER_OFFSET_END (outbuf) = src->n_frames;
if (src->rate_numerator) {
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;
} else {
next_time = src->timestamp_offset;
/* NONE means forever */
GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
}
src->running_time = next_time;
*buffer = outbuf;
return GST_FLOW_OK;
not_negotiated:
{
GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
("format wasn't negotiated before get function"));
return GST_FLOW_NOT_NEGOTIATED;
}
eos:
{
GST_DEBUG_OBJECT (src, "eos: 0 framerate, frame %d", (gint) src->n_frames);
return GST_FLOW_UNEXPECTED;
}
no_buffer:
{
GST_DEBUG_OBJECT (src, "could not allocate buffer, reason %s",
gst_flow_get_name (res));
return res;
}
}
static GstFlowReturn
gst_video_test_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
{
GstVideoTestSrc *src;
GstClockTime next_time;
GstVideoFrame frame;
gconstpointer pal;
gsize palsize;
src = GST_VIDEO_TEST_SRC (psrc);
if (G_UNLIKELY (GST_VIDEO_INFO_FORMAT (&src->info) ==
GST_VIDEO_FORMAT_UNKNOWN))
goto not_negotiated;
/* 0 framerate and we are at the second frame, eos */
if (G_UNLIKELY (src->info.fps_n == 0 && src->n_frames == 1))
goto eos;
GST_LOG_OBJECT (src,
"creating buffer from pool for frame %d", (gint) src->n_frames);
if (!gst_video_frame_map (&frame, &src->info, buffer, GST_MAP_WRITE))
goto invalid_frame;
src->make_image (src, &frame);
if ((pal = gst_video_format_get_palette (GST_VIDEO_FRAME_FORMAT (&frame),
&palsize))) {
memcpy (GST_VIDEO_FRAME_PLANE_DATA (&frame, 1), pal, palsize);
}
gst_video_frame_unmap (&frame);
GST_BUFFER_DTS (buffer) =
src->accum_rtime + src->timestamp_offset + src->running_time;
GST_BUFFER_PTS (buffer) = GST_BUFFER_DTS (buffer);
GST_DEBUG_OBJECT (src, "Timestamp: %" GST_TIME_FORMAT " = accumulated %"
GST_TIME_FORMAT " + offset: %"
GST_TIME_FORMAT " + running time: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_PTS (buffer)), GST_TIME_ARGS (src->accum_rtime),
GST_TIME_ARGS (src->timestamp_offset), GST_TIME_ARGS (src->running_time));
GST_BUFFER_OFFSET (buffer) = src->accum_frames + src->n_frames;
src->n_frames++;
GST_BUFFER_OFFSET_END (buffer) = GST_BUFFER_OFFSET (buffer) + 1;
if (src->info.fps_n) {
next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->info.fps_d, src->info.fps_n);
GST_BUFFER_DURATION (buffer) = next_time - src->running_time;
} else {
next_time = src->timestamp_offset;
/* NONE means forever */
GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
}
src->running_time = next_time;
return GST_FLOW_OK;
not_negotiated:
{
GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
("format wasn't negotiated before get function"));
return GST_FLOW_NOT_NEGOTIATED;
}
eos:
{
GST_DEBUG_OBJECT (src, "eos: 0 framerate, frame %d", (gint) src->n_frames);
return GST_FLOW_EOS;
}
invalid_frame:
{
GST_DEBUG_OBJECT (src, "invalid frame");
return GST_FLOW_OK;
}
}
