static GstFlowReturn
rsn_parsetter_sink_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
RsnParSetter *parset = RSN_PARSETTER (gst_pad_get_parent (pad));
GstFlowReturn ret;
GST_LOG_OBJECT (parset, "Entering bufferalloc");
if (rsn_parsetter_check_caps (parset, caps)) {
ret = gst_pad_alloc_buffer (parset->srcpad, offset, size, caps, buf);
GST_LOG_OBJECT (parset, "Not wrapping buf %p", *buf);
} else {
/* Allocate and wrap a downstream buffer */
GstBuffer *orig_buf;
GstBuffer *outbuf;
GstCaps *override_caps = rsn_parsetter_convert_caps (parset, caps,
parset->is_widescreen);
ret = gst_pad_alloc_buffer (parset->srcpad, offset, size,
override_caps, &orig_buf);
gst_caps_unref (override_caps);
if (ret != GST_FLOW_OK)
return ret;
outbuf = (GstBuffer *) rsn_wrapped_buffer_new (orig_buf);
if (!outbuf) {
/* FIXME: Throw error */
return GST_FLOW_ERROR;
}
rsn_wrapped_buffer_set_owner (RSN_WRAPPEDBUFFER (outbuf),
GST_ELEMENT (parset));
gst_buffer_set_caps (outbuf, caps);
GST_LOG_OBJECT (parset,
"Wrapped ds buf %p with caps %" GST_PTR_FORMAT
" into new buf %p with caps %" GST_PTR_FORMAT,
orig_buf, GST_BUFFER_CAPS (orig_buf), outbuf, GST_BUFFER_CAPS (outbuf));
*buf = outbuf;
}
gst_object_unref (GST_OBJECT (parset));
return ret;
}
static GstFlowReturn
gst_teletextdec_export_html_page (GstTeletextDec * teletext, vbi_page * page,
GstBuffer ** buf)
{
GstCaps *caps;
GstFlowReturn ret;
gchar *html;
gssize size;
vbi_export *ex;
gchar *err;
if (!(ex = vbi_export_new ("html", &err))) {
GST_ELEMENT_ERROR (teletext, LIBRARY, SETTINGS,
("Can't open the HTML export module: %s", err), (NULL));
g_free (err);
return GST_FLOW_ERROR;
}
/* export to NULL to get size of the memory needed to allocate the page */
size = vbi_export_mem (ex, NULL, 0, page);
if (size < 0)
return GST_FLOW_ERROR;
html = g_malloc (size);
vbi_export_mem (ex, html, size, page);
/* Allocate new buffer */
caps = gst_caps_new_simple ("text/html", NULL);
ret = gst_pad_alloc_buffer (teletext->srcpad, GST_BUFFER_OFFSET_NONE,
size, caps, &(*buf));
if (G_LIKELY (ret == GST_FLOW_OK))
GST_BUFFER_DATA (*buf) = GST_BUFFER_MALLOCDATA (*buf) = (guint8 *) html;
gst_caps_unref (caps);
return ret;
}
static GstFlowReturn
gst_ffmpegdeinterlace_chain (GstPad * pad, GstBuffer * inbuf)
{
GstFFMpegDeinterlace *deinterlace =
GST_FFMPEGDEINTERLACE (gst_pad_get_parent (pad));
GstBuffer *outbuf = NULL;
GstFlowReturn result;
result =
gst_pad_alloc_buffer (deinterlace->srcpad, GST_BUFFER_OFFSET_NONE,
deinterlace->to_size, GST_PAD_CAPS (deinterlace->srcpad), &outbuf);
if (result == GST_FLOW_OK) {
gst_ffmpeg_avpicture_fill (&deinterlace->from_frame,
GST_BUFFER_DATA (inbuf), deinterlace->pixfmt, deinterlace->width,
deinterlace->height);
gst_ffmpeg_avpicture_fill (&deinterlace->to_frame, GST_BUFFER_DATA (outbuf),
deinterlace->pixfmt, deinterlace->width, deinterlace->height);
avpicture_deinterlace (&deinterlace->to_frame, &deinterlace->from_frame,
deinterlace->pixfmt, deinterlace->width, deinterlace->height);
gst_buffer_copy_metadata (outbuf, inbuf, GST_BUFFER_COPY_TIMESTAMPS);
result = gst_pad_push (deinterlace->srcpad, outbuf);
}
gst_buffer_unref (inbuf);
return result;
}
GstFlowReturn
gst_vdp_output_src_pad_push (GstVdpOutputSrcPad * vdp_pad,
GstVdpOutputBuffer * output_buf, GError ** error)
{
GstPad *pad;
GstBuffer *outbuf;
g_return_val_if_fail (GST_IS_VDP_OUTPUT_SRC_PAD (vdp_pad), GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_VDP_OUTPUT_BUFFER (output_buf), GST_FLOW_ERROR);
pad = (GstPad *) vdp_pad;
if (G_UNLIKELY (!GST_PAD_CAPS (pad)))
return GST_FLOW_NOT_NEGOTIATED;
switch (vdp_pad->output_format) {
case GST_VDP_OUTPUT_SRC_PAD_FORMAT_RGB:
{
GstFlowReturn ret;
guint size;
gst_vdp_output_buffer_calculate_size (output_buf, &size);
vdp_pad->lock_caps = TRUE;
ret = gst_pad_alloc_buffer (pad, 0, size, GST_PAD_CAPS (vdp_pad),
&outbuf);
vdp_pad->lock_caps = FALSE;
if (ret != GST_FLOW_OK) {
gst_buffer_unref (GST_BUFFER_CAST (output_buf));
return ret;
}
if (!gst_vdp_output_buffer_download (output_buf, outbuf, error)) {
gst_buffer_unref (GST_BUFFER_CAST (output_buf));
gst_buffer_unref (outbuf);
return GST_FLOW_ERROR;
}
gst_buffer_copy_metadata (outbuf, (const GstBuffer *) output_buf,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
gst_buffer_unref (GST_BUFFER_CAST (output_buf));
break;
}
case GST_VDP_OUTPUT_SRC_PAD_FORMAT_VDPAU:
{
outbuf = GST_BUFFER_CAST (output_buf);
break;
}
default:
g_assert_not_reached ();
break;
}
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (vdp_pad));
return gst_pad_push (pad, outbuf);
}
static GstFlowReturn
gst_teletextdec_export_pango_page (GstTeletextDec * teletext, vbi_page * page,
GstBuffer ** buf)
{
vbi_char *acp;
const guint rows = page->rows;
gchar **colors;
gchar **lines;
GString *subs;
GstCaps *caps;
GstFlowReturn ret;
guint start, stop;
guint i, j;
colors = (gchar **) g_malloc (sizeof (gchar *) * (rows + 1));
colors[rows] = g_strdup ('\0');
/* parse all the lines and approximate it's foreground color using the first
* non null character */
for (acp = page->text, i = 0; i < page->rows; acp += page->columns, i++) {
for (j = 0; j < page->columns; j++) {
colors[i] = g_strdup (default_color_map[7]);
if (acp[j].unicode != 0x20) {
colors[i] = g_strdup (default_color_map[acp[j].foreground]);
break;
}
}
}
/* get an array of strings with each line of the telext page */
start = teletext->subtitles_mode ? 1 : 0;
stop = teletext->subtitles_mode ? rows - 2 : rows - 1;
lines = gst_teletextdec_vbi_page_to_text_lines (teletext, start, stop, page);
/* format each line in pango markup */
subs = g_string_new ("");
for (i = start; i <= stop; i++) {
g_string_append_printf (subs, PANGO_TEMPLATE,
teletext->font_description, colors[i], lines[i - start]);
}
/* Allocate new buffer */
caps = gst_caps_new_simple ("text/x-pango-markup", NULL);
ret = gst_pad_alloc_buffer (teletext->srcpad, GST_BUFFER_OFFSET_NONE,
subs->len + 1, caps, &(*buf));
if (G_LIKELY (ret == GST_FLOW_OK))
GST_BUFFER_DATA (*buf) = GST_BUFFER_MALLOCDATA (*buf) =
(guint8 *) subs->str;
else
gst_buffer_unref (*buf);
g_strfreev (lines);
g_strfreev (colors);
g_string_free (subs, FALSE);
gst_caps_unref (caps);
return ret;
}
static GstFlowReturn
gst_win_inet_src_create (GstPushSrc * pushsrc, GstBuffer ** buffer)
{
GstWinInetSrc *self = GST_WIN_INET_SRC (pushsrc);
GstBaseSrc *basesrc = GST_BASE_SRC (pushsrc);
GstBuffer *buf = NULL;
GstFlowReturn ret = GST_FLOW_OK;
DWORD bytes_read = 0;
do {
GstCaps *caps = GST_PAD_CAPS (GST_BASE_SRC_PAD (self));
if (self->icy_caps != NULL)
caps = self->icy_caps;
ret = gst_pad_alloc_buffer (GST_BASE_SRC_PAD (basesrc),
self->cur_offset, basesrc->blocksize, caps, &buf);
if (G_LIKELY (ret == GST_FLOW_OK)) {
if (InternetReadFile (self->url, GST_BUFFER_DATA (buf),
basesrc->blocksize, &bytes_read)) {
if (bytes_read == 0) {
if (self->poll_mode) {
if (gst_win_inet_src_open (self)) {
gst_buffer_unref (buf);
buf = NULL;
} else {
ret = GST_FLOW_ERROR;
}
} else {
GST_ERROR_OBJECT (self, "short read (eof?)");
ret = GST_FLOW_UNEXPECTED;
}
}
} else {
GST_ERROR_OBJECT (self, "InternetReadFile failed: 0x%08lx",
GetLastError ());
ret = GST_FLOW_ERROR;
}
}
}
while (bytes_read == 0 && ret == GST_FLOW_OK);
if (ret == GST_FLOW_OK) {
GST_BUFFER_SIZE (buf) = bytes_read;
self->cur_offset += bytes_read;
*buffer = buf;
} else {
if (buf != NULL)
gst_buffer_unref (buf);
}
return ret;
}
static GstFlowReturn
gst_selector_pad_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
{
GstInputSelector *sel;
GstFlowReturn result;
GstPad *active_sinkpad;
GstPad *prev_active_sinkpad;
GstSelectorPad *selpad;
sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
selpad = GST_SELECTOR_PAD_CAST (pad);
GST_LOG_OBJECT (pad, "received alloc");
GST_INPUT_SELECTOR_LOCK (sel);
prev_active_sinkpad = sel->active_sinkpad;
active_sinkpad = gst_input_selector_activate_sinkpad (sel, pad);
if (pad != active_sinkpad)
goto not_active;
GST_INPUT_SELECTOR_UNLOCK (sel);
if (prev_active_sinkpad != active_sinkpad && pad == active_sinkpad)
g_object_notify (G_OBJECT (sel), "active-pad");
result = gst_pad_alloc_buffer (sel->srcpad, offset, size, caps, buf);
done:
gst_object_unref (sel);
return result;
/* ERRORS */
not_active:
{
GST_INPUT_SELECTOR_UNLOCK (sel);
/* unselected pad, perform fallback alloc or return unlinked when
* asked */
GST_OBJECT_LOCK (selpad);
if (selpad->always_ok) {
GST_DEBUG_OBJECT (pad, "Not selected, performing fallback allocation");
*buf = NULL;
result = GST_FLOW_OK;
} else {
GST_DEBUG_OBJECT (pad, "Not selected, return NOT_LINKED");
result = GST_FLOW_NOT_LINKED;
}
GST_OBJECT_UNLOCK (selpad);
goto done;
}
}
static GstFlowReturn
gst_vdp_vpp_sink_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstVdpVideoPostProcess *vpp =
GST_VDP_VIDEO_POST_PROCESS (gst_pad_get_parent (pad));
GstVdpOutputBuffer *outbuf;
GstFlowReturn ret = GST_FLOW_ERROR;
GstVdpDevice *device = NULL;
GstStructure *structure;
gint width, height;
gint chroma_type;
if (!vpp->device) {
/* if we haven't got a device yet we must alloc a buffer downstream to get it */
GstCaps *src_caps = gst_pad_get_allowed_caps (vpp->srcpad);
gst_pad_fixate_caps (vpp->srcpad, src_caps);
ret = gst_pad_alloc_buffer (vpp->srcpad, 0, 0, src_caps,
(GstBuffer **) & outbuf);
gst_caps_unref (src_caps);
if (ret != GST_FLOW_OK)
goto error;
device = outbuf->device;
gst_buffer_unref (GST_BUFFER (outbuf));
} else
device = vpp->device;
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "width", &width) ||
!gst_structure_get_int (structure, "height", &height) ||
!gst_structure_get_int (structure, "chroma-type", &chroma_type))
goto error;
*buf = GST_BUFFER (gst_vdp_video_buffer_new (device,
chroma_type, width, height));
if (*buf == NULL)
goto error;
GST_BUFFER_SIZE (*buf) = size;
GST_BUFFER_OFFSET (*buf) = offset;
gst_buffer_set_caps (*buf, caps);
ret = GST_FLOW_OK;
error:
gst_object_unref (vpp);
return ret;
}
static GstFlowReturn
gst_proxy_pad_do_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstFlowReturn result;
GstPad *internal = GST_PROXY_PAD_INTERNAL (pad);
result = gst_pad_alloc_buffer (internal, offset, size, caps, buf);
return result;
}
static GstFlowReturn
gst_real_audio_dec_chain (GstPad * pad, GstBuffer * in)
{
GstRealAudioDec *dec = GST_REAL_AUDIO_DEC (GST_PAD_PARENT (pad));
GstFlowReturn flow;
GstClockTime timestamp;
GstBuffer *out = NULL;
guint16 res = 0;
guint len;
if (G_UNLIKELY (dec->lib.RADecode == NULL || dec->lib.module == NULL))
goto not_negotiated;
timestamp = GST_BUFFER_TIMESTAMP (in);
flow = gst_pad_alloc_buffer (dec->src, GST_BUFFER_OFFSET_NONE,
dec->width * dec->leaf_size * dec->height * 16,
GST_PAD_CAPS (dec->src), &out);
if (flow != GST_FLOW_OK)
goto done;
res = dec->lib.RADecode (dec->lib.context, GST_BUFFER_DATA (in),
GST_BUFFER_SIZE (in), GST_BUFFER_DATA (out), &len, -1);
if (res != 0)
goto could_not_decode;
GST_BUFFER_SIZE (out) = len;
GST_BUFFER_TIMESTAMP (out) = timestamp;
flow = gst_pad_push (dec->src, out);
done:
gst_buffer_unref (in);
return flow;
/* Errors */
could_not_decode:
{
gst_buffer_unref (out);
GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL),
("Could not decode buffer (%i).", res));
flow = GST_FLOW_ERROR;
goto done;
}
not_negotiated:
{
GST_WARNING_OBJECT (dec, "decoder not open, probably no input caps set "
"yet, caps on input buffer: %" GST_PTR_FORMAT, GST_BUFFER_CAPS (in));
flow = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
}
static GstFlowReturn
fs_funnel_buffer_alloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
FsFunnel *funnel = FS_FUNNEL (gst_pad_get_parent_element (pad));
GstFlowReturn ret = GST_FLOW_OK;
ret = gst_pad_alloc_buffer (funnel->srcpad, offset, size, caps, buf);
gst_object_unref (funnel);
return ret;
}
static GstFlowReturn
gst_audio_ringbuffer_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstAudioRingbuffer *ringbuffer;
GstFlowReturn result;
ringbuffer = GST_AUDIO_RINGBUFFER (GST_PAD_PARENT (pad));
/* Forward to src pad, without setting caps on the src pad */
result = gst_pad_alloc_buffer (ringbuffer->srcpad, offset, size, caps, buf);
return result;
}
static GstFlowReturn
gst_ffmpegdeinterlace_chain (GstPad * pad, GstBuffer * inbuf)
{
GstFFMpegDeinterlace *deinterlace =
GST_FFMPEGDEINTERLACE (gst_pad_get_parent (pad));
GstBuffer *outbuf = NULL;
GstFlowReturn result;
GST_OBJECT_LOCK (deinterlace);
if (deinterlace->reconfigure) {
if (deinterlace->new_mode != -1)
deinterlace->mode = deinterlace->new_mode;
deinterlace->new_mode = -1;
deinterlace->reconfigure = FALSE;
GST_OBJECT_UNLOCK (deinterlace);
if (GST_PAD_CAPS (deinterlace->srcpad))
gst_ffmpegdeinterlace_sink_setcaps (deinterlace->sinkpad,
GST_PAD_CAPS (deinterlace->sinkpad));
} else {
GST_OBJECT_UNLOCK (deinterlace);
}
if (deinterlace->passthrough)
return gst_pad_push (deinterlace->srcpad, inbuf);
result =
gst_pad_alloc_buffer (deinterlace->srcpad, GST_BUFFER_OFFSET_NONE,
deinterlace->to_size, GST_PAD_CAPS (deinterlace->srcpad), &outbuf);
if (result == GST_FLOW_OK) {
gst_ffmpeg_avpicture_fill (&deinterlace->from_frame,
GST_BUFFER_DATA (inbuf), deinterlace->pixfmt, deinterlace->width,
deinterlace->height);
gst_ffmpeg_avpicture_fill (&deinterlace->to_frame, GST_BUFFER_DATA (outbuf),
deinterlace->pixfmt, deinterlace->width, deinterlace->height);
avpicture_deinterlace (&deinterlace->to_frame, &deinterlace->from_frame,
deinterlace->pixfmt, deinterlace->width, deinterlace->height);
gst_buffer_copy_metadata (outbuf, inbuf, GST_BUFFER_COPY_TIMESTAMPS);
result = gst_pad_push (deinterlace->srcpad, outbuf);
}
gst_buffer_unref (inbuf);
return result;
}
static GstFlowReturn
gst_teletextdec_export_text_page (GstTeletextDec * teletext, vbi_page * page,
GstBuffer ** buf)
{
GstCaps *caps;
GstFlowReturn ret;
gchar *text;
guint size;
if (teletext->subtitles_mode) {
gchar **lines;
GString *subs;
guint i;
lines = gst_teletextdec_vbi_page_to_text_lines (teletext, 1, 23, page);
subs = g_string_new ("");
/* Strip white spaces and squash blank lines */
for (i = 0; i < 23; i++) {
g_strstrip (lines[i]);
if (g_strcmp0 (lines[i], ""))
g_string_append_printf (subs, teletext->subtitles_template, lines[i]);
}
/* if the page is blank and doesn't contain any line of text, just add a
* line break */
if (!g_strcmp0 (subs->str, ""))
g_string_append (subs, "\n");
text = subs->str;
size = subs->len + 1;
g_string_free (subs, FALSE);
g_strfreev (lines);
} else {
size = page->columns * page->rows;
text = g_malloc (size);
vbi_print_page (page, text, size, "UTF-8", FALSE, TRUE);
}
/* Allocate new buffer */
caps = gst_caps_new_simple ("text/plain", NULL);
ret = gst_pad_alloc_buffer (teletext->srcpad, GST_BUFFER_OFFSET_NONE,
size, caps, &(*buf));
if (G_LIKELY (ret == GST_FLOW_OK))
GST_BUFFER_DATA (*buf) = GST_BUFFER_MALLOCDATA (*buf) = (guint8 *) text;
else
gst_buffer_unref (*buf);
gst_caps_unref (caps);
return ret;
}
static GstFlowReturn
gst_neonhttp_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
{
GstNeonhttpSrc *src;
GstBaseSrc *basesrc;
GstFlowReturn ret;
gint read;
src = GST_NEONHTTP_SRC (psrc);
basesrc = GST_BASE_SRC_CAST (psrc);
/* The caller should know the number of bytes and not read beyond EOS. */
if (G_UNLIKELY (src->eos))
goto eos;
/* Create the buffer. */
ret = gst_pad_alloc_buffer (GST_BASE_SRC_PAD (basesrc),
basesrc->segment.last_stop, basesrc->blocksize,
src->icy_caps ? src->icy_caps :
GST_PAD_CAPS (GST_BASE_SRC_PAD (basesrc)), outbuf);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto done;
read = gst_neonhttp_src_request_dispatch (src, *outbuf);
if (G_UNLIKELY (read < 0))
goto read_error;
GST_LOG_OBJECT (src, "returning %u bytes", GST_BUFFER_SIZE (*outbuf));
done:
return ret;
/* ERRORS */
eos:
{
GST_DEBUG_OBJECT (src, "EOS reached");
return GST_FLOW_UNEXPECTED;
}
read_error:
{
GST_ELEMENT_ERROR (src, RESOURCE, READ,
(NULL), ("Could not read any bytes (%i, %s)", read,
ne_get_error (src->session)));
gst_buffer_unref (*outbuf);
*outbuf = NULL;
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_shape_wipe_video_sink_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
GstFlowReturn ret = GST_FLOW_OK;
GST_DEBUG_OBJECT (pad, "Allocating buffer with offset 0x%" G_GINT64_MODIFIER
"x and size %u with caps: %" GST_PTR_FORMAT, offset, size, caps);
*buf = NULL;
ret = gst_pad_alloc_buffer (self->srcpad, offset, size, caps, buf);
gst_object_unref (self);
return ret;
}
static GstFlowReturn
gst_cmml_enc_new_buffer (GstCmmlEnc * enc,
guchar * data, gint size, GstBuffer ** buffer)
{
GstFlowReturn res;
res = gst_pad_alloc_buffer (enc->srcpad, GST_BUFFER_OFFSET_NONE, size,
NULL, buffer);
if (res == GST_FLOW_OK) {
if (data)
memcpy (GST_BUFFER_DATA (*buffer), data, size);
} else {
GST_WARNING_OBJECT (enc, "alloc function returned error %s",
gst_flow_get_name (res));
}
return res;
}
static GstFlowReturn
gst_selector_pad_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
{
RsnStreamSelector *sel;
GstFlowReturn result;
GstPad *active_sinkpad;
sel = RSN_STREAM_SELECTOR (gst_pad_get_parent (pad));
active_sinkpad = rsn_stream_selector_get_active (sel, pad);
/* Fallback allocation for buffers from pads except the selected one */
if (pad != active_sinkpad) {
GST_DEBUG_OBJECT (sel,
"Pad %s:%s is not selected. Performing fallback allocation",
GST_DEBUG_PAD_NAME (pad));
*buf = NULL;
result = GST_FLOW_OK;
} else {
result = gst_pad_alloc_buffer (sel->srcpad, offset, size, caps, buf);
/* FIXME: HACK. If buffer alloc returns not-linked, perform a fallback
* allocation. This should NOT be necessary, because playbin should
* properly block the source pad from running until it's finished hooking
* everything up, but playbin needs refactoring first. */
if (result == GST_FLOW_NOT_LINKED) {
GST_DEBUG_OBJECT (sel,
"No peer pad yet - performing fallback allocation for pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
*buf = NULL;
result = GST_FLOW_OK;
}
}
gst_object_unref (sel);
return result;
}
static GstFlowReturn
gst_segment_clip_sink_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstSegmentClip *self = GST_SEGMENT_CLIP (gst_pad_get_parent (pad));
GstFlowReturn ret = GST_FLOW_OK;
GST_LOG_OBJECT (pad, "Allocating buffer with offset 0x%" G_GINT64_MODIFIER
"x and size %u with caps: %" GST_PTR_FORMAT, offset, size, caps);
*buf = NULL;
ret = gst_pad_alloc_buffer (self->srcpad, offset, size, caps, buf);
if (G_UNLIKELY (ret != GST_FLOW_OK))
GST_ERROR_OBJECT (pad, "Allocating buffer failed: %s",
gst_flow_get_name (ret));
gst_object_unref (self);
return ret;
}
static GstFlowReturn
gst_valve_buffer_alloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstValve *valve = GST_VALVE (gst_pad_get_parent_element (pad));
GstFlowReturn ret = GST_FLOW_OK;
if (g_atomic_int_get (&valve->drop))
*buf = NULL;
else
ret = gst_pad_alloc_buffer (valve->srcpad, offset, size, caps, buf);
/* Ignore errors if "drop" was changed while the thread was blocked
* downwards
*/
if (g_atomic_int_get (&valve->drop))
ret = GST_FLOW_OK;
gst_object_unref (valve);
return ret;
}
static GstBuffer *
gst_ks_video_src_alloc_buffer (guint size, guint alignment, gpointer user_data)
{
GstKsVideoSrc *self = GST_KS_VIDEO_SRC (user_data);
GstBuffer *buf;
GstCaps *caps;
GstFlowReturn flow_ret;
caps = gst_pad_get_negotiated_caps (GST_BASE_SRC_PAD (self));
if (caps == NULL)
goto error_no_caps;
flow_ret = gst_pad_alloc_buffer (GST_BASE_SRC_PAD (self), 0,
size + (alignment - 1), caps, &buf);
gst_caps_unref (caps);
if (G_UNLIKELY (flow_ret != GST_FLOW_OK))
goto error_alloc_buffer;
GST_BUFFER_DATA (buf) =
GSIZE_TO_POINTER ((GPOINTER_TO_SIZE (GST_BUFFER_DATA (buf)) + (alignment -
1)) & ~(alignment - 1));
GST_BUFFER_SIZE (buf) = size;
return buf;
error_no_caps:
{
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
("not negotiated"), ("maybe setcaps failed?"));
return NULL;
}
error_alloc_buffer:
{
GST_ELEMENT_ERROR (self, CORE, PAD, ("alloc_buffer failed"), (NULL));
return NULL;
}
}
/* creates a new buffer and sets caps and timestamp on it
*/
static GstFlowReturn
gst_cmml_dec_new_buffer (GstCmmlDec * dec,
guchar * data, gint size, GstBuffer ** buffer)
{
GstFlowReturn res;
res = gst_pad_alloc_buffer (dec->srcpad, GST_BUFFER_OFFSET_NONE,
size, gst_static_pad_template_get_caps (&gst_cmml_dec_src_factory),
buffer);
if (res == GST_FLOW_OK) {
if (data)
memcpy (GST_BUFFER_DATA (*buffer), data, size);
GST_BUFFER_TIMESTAMP (*buffer) = dec->timestamp;
} else if (res == GST_FLOW_NOT_LINKED) {
GST_DEBUG_OBJECT (dec, "alloc function return NOT-LINKED, ignoring");
} else {
GST_WARNING_OBJECT (dec, "alloc function returned error %s",
gst_flow_get_name (res));
}
return res;
}
/* push remaining data in the buffers out */
static GstFlowReturn
audioresample_pushthrough (GstAudioresample * audioresample)
{
int outsize;
ResampleState *r;
GstBuffer *outbuf;
GstFlowReturn res = GST_FLOW_OK;
GstBaseTransform *trans;
r = audioresample->resample;
outsize = resample_get_output_size (r);
if (outsize == 0) {
GST_DEBUG_OBJECT (audioresample, "no internal buffers needing flush");
goto done;
}
trans = GST_BASE_TRANSFORM (audioresample);
res = gst_pad_alloc_buffer (trans->srcpad, GST_BUFFER_OFFSET_NONE, outsize,
GST_PAD_CAPS (trans->srcpad), &outbuf);
if (G_UNLIKELY (res != GST_FLOW_OK)) {
GST_WARNING_OBJECT (audioresample, "failed allocating buffer of %d bytes",
outsize);
goto done;
}
res = audioresample_do_output (audioresample, outbuf);
if (G_UNLIKELY (res != GST_FLOW_OK))
goto done;
res = gst_pad_push (trans->srcpad, outbuf);
done:
return res;
}
static SoupBuffer *
gst_soup_http_src_chunk_allocator (SoupMessage * msg, gsize max_len,
gpointer user_data)
{
GstSoupHTTPSrc *src = (GstSoupHTTPSrc *) user_data;
GstBaseSrc *basesrc = GST_BASE_SRC_CAST (src);
GstBuffer *gstbuf;
SoupBuffer *soupbuf;
gsize length;
GstFlowReturn rc;
if (max_len)
length = MIN (basesrc->blocksize, max_len);
else
length = basesrc->blocksize;
GST_DEBUG_OBJECT (src, "alloc %" G_GSIZE_FORMAT " bytes <= %" G_GSIZE_FORMAT,
length, max_len);
rc = gst_pad_alloc_buffer (GST_BASE_SRC_PAD (basesrc),
GST_BUFFER_OFFSET_NONE, length,
src->src_caps ? src->src_caps :
GST_PAD_CAPS (GST_BASE_SRC_PAD (basesrc)), &gstbuf);
if (G_UNLIKELY (rc != GST_FLOW_OK)) {
/* Failed to allocate buffer. Stall SoupSession and return error code
* to create(). */
src->ret = rc;
g_main_loop_quit (src->loop);
return NULL;
}
soupbuf = soup_buffer_new_with_owner (GST_BUFFER_DATA (gstbuf), length,
gstbuf, gst_soup_http_src_chunk_free);
return soupbuf;
}
static GstFlowReturn
gst_deinterleave_process (GstDeinterleave * self, GstBuffer * buf)
{
GstFlowReturn ret = GST_FLOW_OK;
guint channels = self->channels;
guint pads_pushed = 0, buffers_allocated = 0;
guint nframes = GST_BUFFER_SIZE (buf) / channels / (self->width / 8);
guint bufsize = nframes * (self->width / 8);
guint i;
GList *srcs;
GstBuffer **buffers_out = g_new0 (GstBuffer *, channels);
guint8 *in, *out;
/* Send any pending events to all src pads */
GST_OBJECT_LOCK (self);
if (self->pending_events) {
GList *events;
GstEvent *event;
GST_DEBUG_OBJECT (self, "Sending pending events to all src pads");
for (events = self->pending_events; events != NULL; events = events->next) {
event = GST_EVENT (events->data);
for (srcs = self->srcpads; srcs != NULL; srcs = srcs->next)
gst_pad_push_event (GST_PAD (srcs->data), gst_event_ref (event));
gst_event_unref (event);
}
g_list_free (self->pending_events);
self->pending_events = NULL;
}
GST_OBJECT_UNLOCK (self);
/* Allocate buffers */
for (srcs = self->srcpads, i = 0; srcs; srcs = srcs->next, i++) {
GstPad *pad = (GstPad *) srcs->data;
buffers_out[i] = NULL;
ret =
gst_pad_alloc_buffer (pad, GST_BUFFER_OFFSET_NONE, bufsize,
GST_PAD_CAPS (pad), &buffers_out[i]);
/* Make sure we got a correct buffer. The only other case we allow
* here is an unliked pad */
if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
goto alloc_buffer_failed;
else if (buffers_out[i] && GST_BUFFER_SIZE (buffers_out[i]) != bufsize)
goto alloc_buffer_bad_size;
else if (buffers_out[i] &&
!gst_caps_is_equal (GST_BUFFER_CAPS (buffers_out[i]),
GST_PAD_CAPS (pad)))
goto invalid_caps;
if (buffers_out[i]) {
gst_buffer_copy_metadata (buffers_out[i], buf,
GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS);
buffers_allocated++;
}
}
/* Return NOT_LINKED if no pad was linked */
if (!buffers_allocated) {
GST_WARNING_OBJECT (self,
"Couldn't allocate any buffers because no pad was linked");
ret = GST_FLOW_NOT_LINKED;
goto done;
}
/* deinterleave */
for (srcs = self->srcpads, i = 0; srcs; srcs = srcs->next, i++) {
GstPad *pad = (GstPad *) srcs->data;
in = (guint8 *) GST_BUFFER_DATA (buf);
in += i * (self->width / 8);
if (buffers_out[i]) {
out = (guint8 *) GST_BUFFER_DATA (buffers_out[i]);
self->func (out, in, channels, nframes);
ret = gst_pad_push (pad, buffers_out[i]);
buffers_out[i] = NULL;
if (ret == GST_FLOW_OK)
pads_pushed++;
else if (ret == GST_FLOW_NOT_LINKED)
ret = GST_FLOW_OK;
else
goto push_failed;
}
}
/* Return NOT_LINKED if no pad was linked */
if (!pads_pushed)
ret = GST_FLOW_NOT_LINKED;
done:
gst_buffer_unref (buf);
g_free (buffers_out);
return ret;
alloc_buffer_failed:
{
GST_WARNING ("gst_pad_alloc_buffer() returned %s", gst_flow_get_name (ret));
goto clean_buffers;
}
alloc_buffer_bad_size:
{
GST_WARNING ("called alloc_buffer(), but didn't get requested bytes");
ret = GST_FLOW_NOT_NEGOTIATED;
goto clean_buffers;
}
invalid_caps:
{
GST_WARNING ("called alloc_buffer(), but didn't get requested caps");
ret = GST_FLOW_NOT_NEGOTIATED;
goto clean_buffers;
}
push_failed:
{
GST_DEBUG ("push() failed, flow = %s", gst_flow_get_name (ret));
goto clean_buffers;
}
clean_buffers:
{
for (i = 0; i < channels; i++) {
if (buffers_out[i])
gst_buffer_unref (buffers_out[i]);
}
gst_buffer_unref (buf);
g_free (buffers_out);
return ret;
}
}
static gboolean
gst_dshowvideodec_push_buffer (byte * buffer, long size, byte * src_object,
UINT64 start, UINT64 stop)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) src_object;
GstDshowVideoDecClass *klass =
(GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (vdec);
GstBuffer *buf = NULL;
gboolean in_seg = FALSE;
gint64 clip_start = 0, clip_stop = 0;
/* check if this buffer is in our current segment */
in_seg = gst_segment_clip (vdec->segment, GST_FORMAT_TIME,
start, stop, &clip_start, &clip_stop);
/* if the buffer is out of segment do not push it downstream */
if (!in_seg) {
GST_CAT_DEBUG_OBJECT (dshowvideodec_debug, vdec,
"buffer is out of segment, start %" GST_TIME_FORMAT " stop %"
GST_TIME_FORMAT, GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
return FALSE;
}
/* buffer is in our segment allocate a new out buffer and clip its
* timestamps */
vdec->last_ret = gst_pad_alloc_buffer (vdec->srcpad, GST_BUFFER_OFFSET_NONE,
size, GST_PAD_CAPS (vdec->srcpad), &buf);
if (!buf) {
GST_CAT_WARNING_OBJECT (dshowvideodec_debug, vdec,
"can't not allocate a new GstBuffer");
return FALSE;
}
/* set buffer properties */
GST_BUFFER_TIMESTAMP (buf) = clip_start;
GST_BUFFER_DURATION (buf) = clip_stop - clip_start;
if (strstr (klass->entry->srccaps, "rgb")) {
/* FOR RGB directshow decoder will return bottom-up BITMAP
* There is probably a way to get top-bottom video frames from
* the decoder...
*/
gint line = 0;
guint stride = vdec->width * 4;
for (; line < vdec->height; line++) {
memcpy (GST_BUFFER_DATA (buf) + (line * stride),
buffer + (size - ((line + 1) * (stride))), stride);
}
} else {
memcpy (GST_BUFFER_DATA (buf), buffer, MIN (size, GST_BUFFER_SIZE (buf)));
}
GST_CAT_LOG_OBJECT (dshowvideodec_debug, vdec,
"push_buffer (size %d)=> pts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
" duration %" GST_TIME_FORMAT, size,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
/* push the buffer downstream */
vdec->last_ret = gst_pad_push (vdec->srcpad, buf);
return TRUE;
}
static GstFlowReturn
gst_real_video_dec_chain (GstPad * pad, GstBuffer * in)
{
GstRealVideoDec *dec;
guint8 *data;
guint size;
GstFlowReturn ret;
RVInData tin;
RVOutData tout;
GstClockTime timestamp, duration;
GstBuffer *out;
guint32 result;
guint frag_count, frag_size;
dec = GST_REAL_VIDEO_DEC (GST_PAD_PARENT (pad));
if (G_UNLIKELY (dec->lib.Transform == NULL || dec->lib.module == NULL))
goto not_negotiated;
data = GST_BUFFER_DATA (in);
size = GST_BUFFER_SIZE (in);
timestamp = GST_BUFFER_TIMESTAMP (in);
duration = GST_BUFFER_DURATION (in);
GST_DEBUG_OBJECT (dec, "got buffer of size %u, timestamp %" GST_TIME_FORMAT,
size, GST_TIME_ARGS (timestamp));
/* alloc output buffer */
ret = gst_pad_alloc_buffer (dec->src, GST_BUFFER_OFFSET_NONE,
dec->width * dec->height * 3 / 2, GST_PAD_CAPS (dec->src), &out);
if (ret != GST_FLOW_OK)
goto alloc_failed;
GST_BUFFER_TIMESTAMP (out) = timestamp;
GST_BUFFER_DURATION (out) = duration;
frag_count = *data++;
frag_size = (frag_count + 1) * 8;
size -= (frag_size + 1);
GST_DEBUG_OBJECT (dec, "frag_count %u, frag_size %u, data size %u",
frag_count, frag_size, size);
/* Decode.
*
* The Buffers contain
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | nfragments | fragment1 ... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | .... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ... | fragment2 ... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* ....
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ... | fragment data |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
* nfragments: number of fragments
* fragmentN: 8 bytes of fragment data (nfragements + 1) of them
* fragment data: the data of the fragments.
*/
tin.datalen = size;
tin.interpolate = 0;
tin.nfragments = frag_count;
tin.fragments = data;
tin.flags = 0;
tin.timestamp = timestamp;
/* jump over the frag table to the fragments */
data += frag_size;
result = dec->lib.Transform (
(gchar *) data,
(gchar *) GST_BUFFER_DATA (out), &tin, &tout, dec->lib.context);
if (result)
goto could_not_transform;
/* When we decoded a frame, reset the error counter. We only fail after N
* consecutive decoding errors. */
dec->error_count = 0;
gst_buffer_unref (in);
/* Check for new dimensions */
if (tout.frames && ((dec->width != tout.width)
|| (dec->height != tout.height))) {
GstCaps *caps = gst_caps_copy (GST_PAD_CAPS (dec->src));
GstStructure *s = gst_caps_get_structure (caps, 0);
GST_DEBUG_OBJECT (dec, "New dimensions: %"
G_GUINT32_FORMAT " x %" G_GUINT32_FORMAT, tout.width, tout.height);
gst_structure_set (s, "width", G_TYPE_INT, (gint) tout.width,
"height", G_TYPE_INT, (gint) tout.height, NULL);
gst_pad_set_caps (dec->src, caps);
gst_buffer_set_caps (out, caps);
gst_caps_unref (caps);
dec->width = tout.width;
dec->height = tout.height;
GST_BUFFER_SIZE (out) = dec->width * dec->height * 3 / 2;
}
GST_DEBUG_OBJECT (dec,
"Pushing out buffer with timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (out)));
if ((ret = gst_pad_push (dec->src, out)) != GST_FLOW_OK)
goto could_not_push;
return ret;
/* Errors */
not_negotiated:
{
GST_WARNING_OBJECT (dec, "decoder not open, probably no input caps set "
"yet, caps on input buffer: %" GST_PTR_FORMAT, GST_BUFFER_CAPS (in));
gst_buffer_unref (in);
return GST_FLOW_NOT_NEGOTIATED;
}
alloc_failed:
{
GST_DEBUG_OBJECT (dec, "buffer alloc failed: %s", gst_flow_get_name (ret));
gst_buffer_unref (in);
return ret;
}
could_not_transform:
{
gst_buffer_unref (out);
gst_buffer_unref (in);
dec->error_count++;
if (dec->max_errors && dec->error_count >= dec->max_errors) {
GST_ELEMENT_ERROR (dec, STREAM, DECODE,
("Could not decode buffer: %" G_GUINT32_FORMAT, result), (NULL));
return GST_FLOW_ERROR;
} else {
GST_ELEMENT_WARNING (dec, STREAM, DECODE,
("Could not decode buffer: %" G_GUINT32_FORMAT, result), (NULL));
return GST_FLOW_OK;
}
}
could_not_push:
{
GST_DEBUG_OBJECT (dec, "Could not push buffer: %s",
gst_flow_get_name (ret));
return ret;
}
}
static GstFlowReturn
gst_xviddec_chain (GstPad * pad, GstBuffer * buf)
{
GstXvidDec *dec;
GstBuffer *outbuf = NULL;
xvid_dec_frame_t xframe;
xvid_dec_stats_t xstats;
gint ret;
guint8 *data, *dupe = NULL;
guint size;
GstFlowReturn fret;
dec = GST_XVIDDEC (GST_OBJECT_PARENT (pad));
if (!dec->handle)
goto not_negotiated;
fret = GST_FLOW_OK;
GST_LOG_OBJECT (dec, "Received buffer of time %" GST_TIME_FORMAT
" duration %" GST_TIME_FORMAT ", size %d",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_SIZE (buf));
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
/* FIXME: should we do anything here, like flush the decoder? */
}
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
/* xvidcore overreads the input buffer, we need to alloc some extra padding
* to make things work reliably */
#define EXTRA_PADDING 16
if (EXTRA_PADDING > 0) {
dupe = g_malloc (size + EXTRA_PADDING);
memcpy (dupe, data, size);
memset (dupe + size, 0, EXTRA_PADDING);
data = dupe;
}
do { /* loop needed because xvidcore may return vol information */
/* decode and so ... */
gst_xvid_init_struct (xframe);
xframe.general = XVID_LOWDELAY;
xframe.bitstream = (void *) data;
xframe.length = size;
gst_xvid_init_struct (xstats);
if (outbuf == NULL) {
fret = gst_pad_alloc_buffer (dec->srcpad, GST_BUFFER_OFFSET_NONE,
dec->outbuf_size, GST_PAD_CAPS (dec->srcpad), &outbuf);
if (fret != GST_FLOW_OK)
goto done;
}
gst_xvid_image_fill (&xframe.output, GST_BUFFER_DATA (outbuf),
dec->csp, dec->width, dec->height);
ret = xvid_decore (dec->handle, XVID_DEC_DECODE, &xframe, &xstats);
if (ret < 0)
goto decode_error;
GST_LOG_OBJECT (dec, "xvid produced output, type %d, consumed %d",
xstats.type, ret);
if (xstats.type == XVID_TYPE_VOL)
gst_xviddec_negotiate (dec, &xstats);
data += ret;
size -= ret;
} while (xstats.type <= 0 && size > 0);
/* 1 byte is frequently left over */
if (size > 1) {
GST_WARNING_OBJECT (dec, "decoder did not consume all input");
}
/* FIXME, reflow the multiple return exit points */
if (xstats.type > 0) { /* some real output was produced */
if (G_UNLIKELY (dec->waiting_for_key)) {
if (xstats.type != XVID_TYPE_IVOP)
goto dropping;
dec->waiting_for_key = FALSE;
}
/* bframes can cause a delay in frames being returned
non keyframe timestamps can permute a bit between
encode and display order, but should match for keyframes */
if (dec->have_ts) {
GST_BUFFER_TIMESTAMP (outbuf) = dec->next_ts;
GST_BUFFER_DURATION (outbuf) = dec->next_dur;
dec->next_ts = GST_BUFFER_TIMESTAMP (buf);
dec->next_dur = GST_BUFFER_DURATION (buf);
} else {
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
}
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (dec->srcpad));
GST_LOG_OBJECT (dec, "pushing buffer with pts %" GST_TIME_FORMAT
" duration %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf)));
fret = gst_pad_push (dec->srcpad, outbuf);
} else { /* no real output yet, delay in frames being returned */
if (G_UNLIKELY (dec->have_ts)) {
GST_WARNING_OBJECT (dec,
"xvid decoder produced no output, but timestamp %" GST_TIME_FORMAT
" already queued", GST_TIME_ARGS (dec->next_ts));
} else {
dec->have_ts = TRUE;
dec->next_ts = GST_BUFFER_TIMESTAMP (buf);
dec->next_dur = GST_BUFFER_DURATION (buf);
}
gst_buffer_unref (outbuf);
}
done:
g_free (dupe);
gst_buffer_unref (buf);
return fret;
/* ERRORS */
not_negotiated:
{
GST_ELEMENT_ERROR (dec, CORE, NEGOTIATION, (NULL),
("format wasn't negotiated before chain function"));
fret = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
decode_error:
{
/* FIXME: shouldn't error out fatally/properly after N decoding errors? */
GST_ELEMENT_WARNING (dec, STREAM, DECODE, (NULL),
("Error decoding xvid frame: %s (%d)", gst_xvid_error (ret), ret));
if (outbuf)
gst_buffer_unref (outbuf);
goto done;
}
dropping:
{
GST_WARNING_OBJECT (dec, "Dropping non-keyframe (seek/init)");
if (outbuf)
gst_buffer_unref (outbuf);
goto done;
}
}
HRESULT VideoFakeSink::DoRenderSample(IMediaSample *pMediaSample)
{
gboolean in_seg = FALSE;
gint64 clip_start = 0, clip_stop = 0;
GstDshowVideoDecClass *klass =
(GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (mDec);
GstBuffer *buf = NULL;
GstClockTime start, stop;
if(pMediaSample)
{
BYTE *pBuffer = NULL;
LONGLONG lStart = 0, lStop = 0;
long size = pMediaSample->GetActualDataLength();
pMediaSample->GetPointer(&pBuffer);
pMediaSample->GetTime(&lStart, &lStop);
start = lStart * 100;
stop = lStop * 100;
/* check if this buffer is in our current segment */
in_seg = gst_segment_clip (mDec->segment, GST_FORMAT_TIME,
start, stop, &clip_start, &clip_stop);
/* if the buffer is out of segment do not push it downstream */
if (!in_seg) {
GST_DEBUG_OBJECT (mDec,
"buffer is out of segment, start %" GST_TIME_FORMAT " stop %"
GST_TIME_FORMAT, GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
goto done;
}
/* buffer is in our segment, allocate a new out buffer and clip its
* timestamps */
mDec->last_ret = gst_pad_alloc_buffer (mDec->srcpad,
GST_BUFFER_OFFSET_NONE,
size,
GST_PAD_CAPS (mDec->srcpad), &buf);
if (!buf) {
GST_WARNING_OBJECT (mDec,
"cannot allocate a new GstBuffer");
goto done;
}
/* set buffer properties */
GST_BUFFER_TIMESTAMP (buf) = clip_start;
GST_BUFFER_DURATION (buf) = clip_stop - clip_start;
if (strstr (klass->entry->srccaps, "rgb")) {
/* FOR RGB directshow decoder will return bottom-up BITMAP
* There is probably a way to get top-bottom video frames from
* the decoder...
*/
gint line = 0;
guint stride = mDec->width * 4;
for (; line < mDec->height; line++) {
memcpy (GST_BUFFER_DATA (buf) + (line * stride),
pBuffer + (size - ((line + 1) * (stride))), stride);
}
} else {
memcpy (GST_BUFFER_DATA (buf), pBuffer, MIN ((unsigned int)size, GST_BUFFER_SIZE (buf)));
}
GST_LOG_OBJECT (mDec,
"push_buffer (size %d)=> pts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
" duration %" GST_TIME_FORMAT, size,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
/* push the buffer downstream */
mDec->last_ret = gst_pad_push (mDec->srcpad, buf);
}
done:
return S_OK;
}
static GstFlowReturn
gst_dasf_src_create (GstAudioSrc *audiosrc,
guint64 offset,
guint length,
GstBuffer **buffer)
{
GstDasfSrc* self = GST_DASF_SRC (audiosrc);
GstBaseAudioSrc *baseaudiosrc = GST_BASE_AUDIO_SRC (self);
GstBuffer* gst_buffer = NULL;
OMX_BUFFERHEADERTYPE* omx_buffer = NULL;
GstDasfSrcPrivate* priv = GST_DASF_SRC_GET_PRIVATE (self);
GstGooAudioFilter* me = self->peer_element;
GST_DEBUG ("");
if (me->component->cur_state != OMX_StateExecuting)
{
return GST_FLOW_UNEXPECTED;
}
GST_DEBUG ("goo stuff");
{
omx_buffer = goo_port_grab_buffer (me->outport);
if (gst_pad_alloc_buffer (GST_BASE_SRC_PAD (self),
priv->outcount,
omx_buffer->nFilledLen,
GST_PAD_CAPS (GST_BASE_SRC_PAD (self)),
&gst_buffer) == GST_FLOW_OK)
{
if (GST_IS_GOO_BUFFER (gst_buffer))
{
memcpy (GST_BUFFER_DATA (gst_buffer),
omx_buffer->pBuffer,
omx_buffer->nFilledLen);
goo_component_release_buffer (me->component,
omx_buffer);
}
else
{
gst_buffer_unref (gst_buffer);
gst_buffer = (GstBuffer*) gst_goo_buffer_new ();
gst_goo_buffer_set_data (gst_buffer,
me->component,
omx_buffer);
}
}
else
{
goto fail;
}
}
GST_DEBUG ("gst stuff");
{
GstClock* clock = NULL;
GstClockTime timestamp, duration;
clock = gst_element_get_clock (GST_ELEMENT (self));
timestamp = gst_clock_get_time (clock);
timestamp -= gst_element_get_base_time (GST_ELEMENT (self));
gst_object_unref (clock);
GST_BUFFER_TIMESTAMP (gst_buffer) = gst_util_uint64_scale_int (GST_SECOND, priv->outcount, 50);
/* Set 20 millisecond duration */
duration = gst_util_uint64_scale_int
(GST_SECOND,
1,
50);
GST_BUFFER_DURATION (gst_buffer) = duration;
GST_BUFFER_OFFSET (gst_buffer) = priv->outcount++;
GST_BUFFER_OFFSET_END (gst_buffer) = priv->outcount;
gst_buffer_set_caps (gst_buffer,
GST_PAD_CAPS (GST_BASE_SRC_PAD (self)));
}
beach:
*buffer = gst_buffer;
return GST_FLOW_OK;
fail:
if (G_LIKELY (*buffer))
{
gst_buffer_unref (*buffer);
}
return GST_FLOW_ERROR;
}