static GstFlowReturn
gst_vdp_mpeg_dec_alloc_buffer (GstVdpMpegDec * mpeg_dec, GstBuffer ** outbuf)
{
GstFlowReturn ret;
ret = gst_pad_alloc_buffer_and_set_caps (mpeg_dec->src, 0, 0,
GST_PAD_CAPS (mpeg_dec->src), outbuf);
if (ret != GST_FLOW_OK)
return ret;
if (!mpeg_dec->device) {
GstVdpDevice *device;
VdpStatus status;
device = mpeg_dec->device =
g_object_ref (GST_VDP_VIDEO_BUFFER (*outbuf)->device);
status = device->vdp_decoder_create (device->device, mpeg_dec->profile,
mpeg_dec->width, mpeg_dec->height, 2, &mpeg_dec->decoder);
if (status != VDP_STATUS_OK) {
GST_ELEMENT_ERROR (mpeg_dec, RESOURCE, READ,
("Could not create vdpau decoder"),
("Error returned from vdpau was: %s",
device->vdp_get_error_string (status)));
ret = GST_FLOW_ERROR;
}
}
return ret;
}
static boolean
gst_jpegenc_flush_destination (j_compress_ptr cinfo)
{
GstBuffer *overflow_buffer;
guint32 old_buffer_size;
GstJpegEnc *jpegenc = (GstJpegEnc *) (cinfo->client_data);
GST_DEBUG_OBJECT (jpegenc,
"gst_jpegenc_chain: flush_destination: buffer too small");
/* Our output buffer wasn't big enough.
* Make a new buffer that's twice the size, */
old_buffer_size = GST_BUFFER_SIZE (jpegenc->output_buffer);
gst_pad_alloc_buffer_and_set_caps (jpegenc->srcpad,
GST_BUFFER_OFFSET_NONE, old_buffer_size * 2,
GST_PAD_CAPS (jpegenc->srcpad), &overflow_buffer);
memcpy (GST_BUFFER_DATA (overflow_buffer),
GST_BUFFER_DATA (jpegenc->output_buffer), old_buffer_size);
gst_buffer_copy_metadata (overflow_buffer, jpegenc->output_buffer,
GST_BUFFER_COPY_TIMESTAMPS);
/* drop it into place, */
gst_buffer_unref (jpegenc->output_buffer);
jpegenc->output_buffer = overflow_buffer;
/* and last, update libjpeg on where to work. */
jpegenc->jdest.next_output_byte =
GST_BUFFER_DATA (jpegenc->output_buffer) + old_buffer_size;
jpegenc->jdest.free_in_buffer =
GST_BUFFER_SIZE (jpegenc->output_buffer) - old_buffer_size;
return TRUE;
}
static GstFlowReturn
get_buffer (GstMonoscope * monoscope, GstBuffer ** outbuf)
{
GstFlowReturn ret;
if (GST_PAD_CAPS (monoscope->srcpad) == NULL) {
if (!gst_monoscope_src_negotiate (monoscope))
return GST_FLOW_NOT_NEGOTIATED;
}
GST_LOG_OBJECT (monoscope, "allocating output buffer of size %d with caps %"
GST_PTR_FORMAT, monoscope->outsize, GST_PAD_CAPS (monoscope->srcpad));
ret =
gst_pad_alloc_buffer_and_set_caps (monoscope->srcpad,
GST_BUFFER_OFFSET_NONE, monoscope->outsize,
GST_PAD_CAPS (monoscope->srcpad), outbuf);
if (ret != GST_FLOW_OK)
return ret;
if (*outbuf == NULL)
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
static void
user_info_callback (png_structp png_ptr, png_infop info)
{
GstPngDec *pngdec = NULL;
GstFlowReturn ret = GST_FLOW_OK;
size_t buffer_size;
GstBuffer *buffer = NULL;
pngdec = GST_PNGDEC (png_ptr->io_ptr);
GST_LOG ("info ready");
/* Generate the caps and configure */
ret = gst_pngdec_caps_create_and_set (pngdec);
if (ret != GST_FLOW_OK) {
goto beach;
}
/* Allocate output buffer */
pngdec->rowbytes = png_get_rowbytes (pngdec->png, pngdec->info);
buffer_size = pngdec->height * GST_ROUND_UP_4 (pngdec->rowbytes);
ret =
gst_pad_alloc_buffer_and_set_caps (pngdec->srcpad, GST_BUFFER_OFFSET_NONE,
buffer_size, GST_PAD_CAPS (pngdec->srcpad), &buffer);
if (ret != GST_FLOW_OK) {
goto beach;
}
pngdec->buffer_out = buffer;
beach:
pngdec->ret = ret;
}
/* allocate and output buffer, if no format was negotiated, this
* function will negotiate one. After calling this function, a
* reverse negotiation could have happened. */
static GstFlowReturn
get_buffer (GstVisual * visual, GstBuffer ** outbuf)
{
GstFlowReturn ret;
/* we don't know an output format yet, pick one */
if (GST_PAD_CAPS (visual->srcpad) == NULL) {
if (!gst_vis_src_negotiate (visual))
return GST_FLOW_NOT_NEGOTIATED;
}
GST_DEBUG_OBJECT (visual, "allocating output buffer with caps %"
GST_PTR_FORMAT, GST_PAD_CAPS (visual->srcpad));
/* now allocate a buffer with the last negotiated format.
* Downstream could renegotiate a new format, which will trigger
* our setcaps function on the source pad. */
ret =
gst_pad_alloc_buffer_and_set_caps (visual->srcpad,
GST_BUFFER_OFFSET_NONE, visual->outsize,
GST_PAD_CAPS (visual->srcpad), outbuf);
/* no buffer allocated, we don't care why. */
if (ret != GST_FLOW_OK)
return ret;
return GST_FLOW_OK;
}
static GstFlowReturn
pad_chain(GstPad *pad,
GstBuffer *buf)
{
GstDspDummy *self;
GstFlowReturn ret;
GstBuffer *out_buf;
self = GST_DSP_DUMMY(GST_OBJECT_PARENT(pad));
ret = gst_pad_alloc_buffer_and_set_caps(self->srcpad,
GST_BUFFER_OFFSET_NONE,
GST_BUFFER_SIZE(buf),
GST_BUFFER_CAPS(buf),
&out_buf);
if (G_UNLIKELY(ret != GST_FLOW_OK)) {
GST_ERROR_OBJECT(self, "couldn't allocate buffer");
ret = GST_FLOW_ERROR;
goto leave;
}
/* map dsp to gpp address */
map_buffer(self, buf, self->in_buffer);
map_buffer(self, out_buf, self->out_buffer);
configure_dsp_node(self->dsp_handle, self->node, self->in_buffer, self->out_buffer);
if (self->in_buffer->need_copy) {
memcpy(self->in_buffer->data, GST_BUFFER_DATA(buf), GST_BUFFER_SIZE(buf));
self->in_buffer->need_copy = false;
}
{
dsp_msg_t msg;
dmm_buffer_clean(self->in_buffer, self->in_buffer->size);
msg.cmd = 1;
msg.arg_1 = self->in_buffer->size;
dsp_node_put_message(self->dsp_handle, self->node, &msg, -1);
dsp_node_get_message(self->dsp_handle, self->node, &msg, -1);
dmm_buffer_invalidate(self->out_buffer, self->out_buffer->size);
}
if (self->out_buffer->need_copy) {
memcpy(GST_BUFFER_DATA(out_buf), self->out_buffer->data, GST_BUFFER_SIZE(out_buf));
self->out_buffer->need_copy = false;
}
GST_BUFFER_TIMESTAMP(out_buf) = GST_BUFFER_TIMESTAMP(buf);
ret = gst_pad_push(self->srcpad, out_buf);
leave:
gst_buffer_unref(buf);
return ret;
}
/* Allocate buffer and copy image data into Y444 format */
static GstFlowReturn
theora_handle_image (GstTheoraDec * dec, th_ycbcr_buffer buf, GstBuffer ** out)
{
gint width, height, stride;
GstFlowReturn result;
int i, plane;
GstVideoFormat format;
guint8 *dest, *src;
switch (dec->info.pixel_fmt) {
case TH_PF_444:
format = GST_VIDEO_FORMAT_Y444;
break;
case TH_PF_420:
format = GST_VIDEO_FORMAT_I420;
break;
case TH_PF_422:
format = GST_VIDEO_FORMAT_Y42B;
break;
default:
g_assert_not_reached ();
}
result =
gst_pad_alloc_buffer_and_set_caps (dec->srcpad, GST_BUFFER_OFFSET_NONE,
gst_video_format_get_size (format, dec->width, dec->height),
GST_PAD_CAPS (dec->srcpad), out);
if (G_UNLIKELY (result != GST_FLOW_OK)) {
GST_DEBUG_OBJECT (dec, "could not get buffer, reason: %s",
gst_flow_get_name (result));
return result;
}
for (plane = 0; plane < 3; plane++) {
width = gst_video_format_get_component_width (format, plane, dec->width);
height = gst_video_format_get_component_height (format, plane, dec->height);
stride = gst_video_format_get_row_stride (format, plane, dec->width);
dest =
GST_BUFFER_DATA (*out) + gst_video_format_get_component_offset (format,
plane, dec->width, dec->height);
src = buf[plane].data;
src += ((height == dec->height) ? dec->offset_y : dec->offset_y / 2)
* buf[plane].stride;
src += (width == dec->width) ? dec->offset_x : dec->offset_x / 2;
for (i = 0; i < height; i++) {
memcpy (dest, src, width);
dest += stride;
src += buf[plane].stride;
}
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_a52dec_push (GstA52Dec * a52dec,
GstPad * srcpad, int flags, sample_t * samples, GstClockTime timestamp)
{
GstBuffer *buf;
int chans, n, c;
GstFlowReturn result;
flags &= (A52_CHANNEL_MASK | A52_LFE);
chans = gst_a52dec_channels (flags, NULL);
if (!chans) {
GST_ELEMENT_ERROR (GST_ELEMENT (a52dec), STREAM, DECODE, (NULL),
("invalid channel flags: %d", flags));
return GST_FLOW_ERROR;
}
result =
gst_pad_alloc_buffer_and_set_caps (srcpad, 0,
256 * chans * (SAMPLE_WIDTH / 8), GST_PAD_CAPS (srcpad), &buf);
if (result != GST_FLOW_OK)
return result;
for (n = 0; n < 256; n++) {
for (c = 0; c < chans; c++) {
((sample_t *) GST_BUFFER_DATA (buf))[n * chans + c] =
samples[c * 256 + n];
}
}
GST_BUFFER_TIMESTAMP (buf) = timestamp;
GST_BUFFER_DURATION (buf) = 256 * GST_SECOND / a52dec->sample_rate;
result = GST_FLOW_OK;
if ((buf = gst_audio_buffer_clip (buf, &a52dec->segment,
a52dec->sample_rate, (SAMPLE_WIDTH / 8) * chans))) {
/* set discont when needed */
if (a52dec->discont) {
GST_LOG_OBJECT (a52dec, "marking DISCONT");
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
a52dec->discont = FALSE;
}
if (a52dec->segment.rate > 0.0) {
GST_DEBUG_OBJECT (a52dec,
"Pushing buffer with ts %" GST_TIME_FORMAT " duration %"
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
result = gst_pad_push (srcpad, buf);
} else {
/* reverse playback, queue frame till later when we get a discont. */
GST_DEBUG_OBJECT (a52dec, "queued frame");
a52dec->queued = g_list_prepend (a52dec->queued, buf);
}
}
return result;
}
static GstFlowReturn sbc_enc_chain(GstPad *pad, GstBuffer *buffer)
{
GstSbcEnc *enc = GST_SBC_ENC(gst_pad_get_parent(pad));
GstAdapter *adapter = enc->adapter;
GstFlowReturn res = GST_FLOW_OK;
gst_adapter_push(adapter, buffer);
while (gst_adapter_available(adapter) >= enc->codesize &&
res == GST_FLOW_OK) {
GstBuffer *output;
GstCaps *caps;
const guint8 *data;
gint consumed;
caps = GST_PAD_CAPS(enc->srcpad);
res = gst_pad_alloc_buffer_and_set_caps(enc->srcpad,
GST_BUFFER_OFFSET_NONE,
enc->frame_length, caps,
&output);
if (res != GST_FLOW_OK)
goto done;
data = gst_adapter_peek(adapter, enc->codesize);
consumed = sbc_encode(&enc->sbc, (gpointer) data,
enc->codesize,
GST_BUFFER_DATA(output),
GST_BUFFER_SIZE(output), NULL);
if (consumed <= 0) {
GST_DEBUG_OBJECT(enc, "comsumed < 0, codesize: %d",
enc->codesize);
break;
}
gst_adapter_flush(adapter, consumed);
GST_BUFFER_TIMESTAMP(output) = GST_BUFFER_TIMESTAMP(buffer);
/* we have only 1 frame */
GST_BUFFER_DURATION(output) = enc->frame_duration;
res = gst_pad_push(enc->srcpad, output);
if (res != GST_FLOW_OK)
goto done;
}
done:
gst_object_unref(enc);
return res;
}
/** GstXineInput ***********************************************************/
enum
{
ARG_0,
ARG_LOCATION
};
GST_BOILERPLATE (GstXineInput, gst_xine_input, GstXine, GST_TYPE_XINE);
static void gst_xine_input_dispose (GObject * object);
static void gst_xine_input_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_xine_input_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn
gst_xine_input_change_state (GstElement * element, GstStateChange transition);
static void
gst_xine_input_base_init (gpointer g_class)
{
}
static void
gst_xine_input_class_init (GstXineInputClass * klass)
{
GstElementClass *element = GST_ELEMENT_CLASS (klass);
GObjectClass *object = G_OBJECT_CLASS (klass);
element->change_state = gst_xine_input_change_state;
object->set_property = gst_xine_input_set_property;
object->get_property = gst_xine_input_get_property;
object->dispose = gst_xine_input_dispose;
g_object_class_install_property (object, ARG_LOCATION,
g_param_spec_string ("location", "location", "location",
NULL, G_PARAM_READWRITE));
}
static void
gst_xine_input_init (GstXineInput * xine, GstXineInputClass * g_class)
{
}
static void
gst_xine_input_dispose (GObject * object)
{
GstXineInput *xine = GST_XINE_INPUT (object);
g_free (xine->location);
xine->location = NULL;
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static void
gst_xine_input_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstXineInput *xine = GST_XINE_INPUT (object);
switch (prop_id) {
case ARG_LOCATION:
if (gst_element_get_state (GST_ELEMENT (xine)) != GST_STATE_NULL)
return;
if (xine->location)
g_free (xine->location);
xine->location = g_strdup (g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
return;
}
}
static void
gst_xine_input_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstXineInput *xine = GST_XINE_INPUT (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, xine->location);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
return;
}
}
#define BUFFER_SIZE 4096 /* FIXME: what size? */
static GstData *
gst_xine_input_get (GstPad * pad)
{
GstXineInput *xine =
GST_XINE_INPUT (gst_object_get_parent (GST_OBJECT (pad)));
GstBuffer *buf;
gint real_size, position;
/* FIXME: how does xine figure out EOS? */
position = xine->input->get_current_pos (xine->input);
if (position > 0 && position == xine->input->get_length (xine->input)) {
gst_element_set_eos (GST_ELEMENT (xine));
return GST_DATA (gst_event_new (GST_EVENT_EOS));
}
buf =
gst_pad_alloc_buffer_and_set_caps (xine->srcpad, GST_BUFFER_OFFSET_NONE,
xine->blocksize);
GST_BUFFER_OFFSET (buf) = position;
real_size =
xine->input->read (xine->input, GST_BUFFER_DATA (buf),
GST_BUFFER_MAXSIZE (buf));
GST_BUFFER_SIZE (buf) = real_size;
if (real_size < 0) {
GST_ELEMENT_ERROR (xine, RESOURCE, READ, (NULL), ("error %d reading data",
real_size));
gst_data_unref (GST_DATA (buf));
return NULL;
} else if (real_size == 0) {
buf_element_t *element;
if (xine->input->get_capabilities (xine->input) & INPUT_CAP_BLOCK)
element =
xine->input->read_block (xine->input,
gst_xine_get_stream (GST_XINE (xine))->audio_fifo, xine->blocksize);
if (element == NULL) {
/* FIXME: is this EOS? */
gst_element_set_eos (GST_ELEMENT (xine));
return GST_DATA (gst_event_new (GST_EVENT_EOS));
} else {
GST_BUFFER_SIZE (buf) = element->size;
/* FIXME: put buf_element_t data in buffer */
memcpy (GST_BUFFER_DATA (buf), element->mem, element->size);
element->free_buffer (element);
}
}
GST_BUFFER_OFFSET_END (buf) = xine->input->get_current_pos (xine->input);
return GST_DATA (buf);
}
/**
* overrides the default buffer allocation for output port to allow
* pad_alloc'ing from the srcpad
*/
static GstBuffer *
buffer_alloc (GOmxPort *port, gint len)
{
GstOmxBaseSrc *self = port->core->object;
GstBaseSrc *gst_base = GST_BASE_SRC (self);
GstBuffer *buf;
GstFlowReturn ret;
check_settings (self->out_port, gst_base->srcpad);
ret = gst_pad_alloc_buffer_and_set_caps (
gst_base->srcpad, GST_BUFFER_OFFSET_NONE,
len, GST_PAD_CAPS (gst_base->srcpad), &buf);
if (ret == GST_FLOW_OK) return buf;
return NULL;
}
static void
live_switch_push (int rate, GstCaps * caps)
{
GstBuffer *inbuffer;
GstCaps *desired;
GList *l;
desired = gst_caps_copy (caps);
gst_caps_set_simple (desired, "rate", G_TYPE_INT, rate, NULL);
gst_pad_set_caps (mysrcpad, desired);
fail_unless (gst_pad_alloc_buffer_and_set_caps (mysrcpad,
GST_BUFFER_OFFSET_NONE, rate * 4, desired, &inbuffer) == GST_FLOW_OK);
/* When the basetransform hits the non-configured case it always
* returns a buffer with exactly the same caps as we requested so the actual
* renegotiation (if needed) will be done in the _chain*/
fail_unless (inbuffer != NULL);
GST_DEBUG ("desired: %" GST_PTR_FORMAT ".... got: %" GST_PTR_FORMAT,
desired, GST_BUFFER_CAPS (inbuffer));
fail_unless (gst_caps_is_equal (desired, GST_BUFFER_CAPS (inbuffer)));
memset (GST_BUFFER_DATA (inbuffer), 0, GST_BUFFER_SIZE (inbuffer));
GST_BUFFER_DURATION (inbuffer) = GST_SECOND;
GST_BUFFER_TIMESTAMP (inbuffer) = 0;
GST_BUFFER_OFFSET (inbuffer) = 0;
/* pushing gives away my reference ... */
fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
/* ... but it ends up being collected on the global buffer list */
fail_unless_equals_int (g_list_length (buffers), 1);
for (l = buffers; l; l = l->next) {
GstBuffer *buffer = GST_BUFFER (l->data);
gst_buffer_unref (buffer);
}
g_list_free (buffers);
buffers = NULL;
gst_caps_unref (desired);
}
/**
* overrides the default buffer allocation for output port to allow
* pad_alloc'ing from the srcpad
*/
static GstBuffer *
buffer_alloc (GOmxPort *port, gint len)
{
GstOmxBaseFilter2 *self = port->core->object;
GstBuffer *buf;
GstFlowReturn ret;
int i;
for (i = 0; i < NUM_OUTPUTS; i++)
if (port == self->out_port[i]) break;
if (i >= NUM_OUTPUTS) return NULL;
#if 1
/** @todo remove this check */
if (G_LIKELY (self->in_port->enabled))
{
GstCaps *caps = NULL;
caps = gst_pad_get_negotiated_caps (self->srcpad[i]);
if (!caps)
{
/** @todo We shouldn't be doing this. */
GOmxCore *gomx = self->gomx;
GST_WARNING_OBJECT (self, "faking settings changed notification");
if (gomx->settings_changed_cb)
gomx->settings_changed_cb (gomx);
}
else
{
GST_LOG_OBJECT (self, "caps already fixed: %" GST_PTR_FORMAT, caps);
gst_caps_unref (caps);
}
}
#endif
ret = gst_pad_alloc_buffer_and_set_caps (
self->srcpad[i], GST_BUFFER_OFFSET_NONE,
len, GST_PAD_CAPS (self->srcpad[i]), &buf);
if (ret == GST_FLOW_OK) return buf;
return NULL;
}
static GstFlowReturn
gst_vdp_vpp_alloc_output_buffer (GstVdpVideoPostProcess * vpp, GstCaps * caps,
GstVdpOutputBuffer ** outbuf)
{
GstFlowReturn ret;
ret = gst_pad_alloc_buffer_and_set_caps (vpp->srcpad, 0, 0,
caps, (GstBuffer **) outbuf);
if (ret != GST_FLOW_OK)
return ret;
if (!vpp->device) {
ret = gst_vdp_vpp_create_mixer (vpp, (*outbuf)->device);
}
if (ret != GST_FLOW_OK)
gst_buffer_unref (GST_BUFFER (*outbuf));
return ret;
}
static GstFlowReturn
gst_caps_debug_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstCapsDebug *capsdebug;
gchar *s;
gchar *t;
GstFlowReturn ret;
GstPad *otherpad;
gboolean newcaps;
capsdebug = GST_CAPS_DEBUG (gst_pad_get_parent (pad));
otherpad =
(pad == capsdebug->srcpad) ? capsdebug->sinkpad : capsdebug->srcpad;
newcaps = (caps != GST_PAD_CAPS (pad));
if (newcaps) {
s = gst_caps_to_string (caps);
GST_INFO ("%s called bufferalloc with new caps, offset=%" G_GUINT64_FORMAT
" size=%d caps=%s", THISPAD, offset, size, s);
g_free (s);
}
ret = gst_pad_alloc_buffer_and_set_caps (otherpad, offset, size, caps, buf);
if (newcaps) {
GST_INFO ("%s returned %s", OTHERPAD, gst_flow_get_name (ret));
}
if (caps != GST_BUFFER_CAPS (*buf)) {
s = gst_caps_to_string (caps);
t = gst_caps_to_string (GST_BUFFER_CAPS (*buf));
GST_INFO
("%s returned from bufferalloc with different caps, requested=%s returned=%s",
OTHERPAD, s, t);
g_free (s);
g_free (t);
}
gst_object_unref (capsdebug);
return ret;
}
static int get_buffer(AVCodecContext *avctx, AVFrame *pic)
{
GstBuffer *out_buf;
GstFlowReturn ret;
struct obj *self = avctx->opaque;
int width = avctx->width;
int height = avctx->height;
avcodec_align_dimensions(avctx, &width, &height);
pic->linesize[0] = width;
pic->linesize[1] = width / 2;
pic->linesize[2] = width / 2;
if (avctx->width == width && avctx->height == height) {
ret = gst_pad_alloc_buffer_and_set_caps(self->srcpad, 0,
width * height * 3 / 2,
self->srcpad->caps, &out_buf);
if (ret != GST_FLOW_OK)
return 1;
gst_buffer_ref(out_buf);
pic->opaque = out_buf;
pic->data[0] = out_buf->data;
pic->data[1] = pic->data[0] + pic->linesize[0] * height;
pic->data[2] = pic->data[1] + pic->linesize[1] * height / 2;
} else {
ret = av_image_alloc(pic->base, pic->linesize, width, height, avctx->pix_fmt, 1);
if (ret < 0)
return ret;
for (unsigned i = 0; i < 3; i++)
pic->data[i] = pic->base[i];
}
pic->type = FF_BUFFER_TYPE_USER;
if (avctx->pkt)
pic->pkt_pts = avctx->pkt->pts;
else
pic->pkt_pts = AV_NOPTS_VALUE;
return 0;
}
static GstFlowReturn
gst_vdp_output_src_pad_create_buffer (GstVdpOutputSrcPad * vdp_pad,
GstVdpOutputBuffer ** output_buf, GError ** error)
{
GstFlowReturn ret;
GstBuffer *neg_buf;
/* negotiate */
ret = gst_pad_alloc_buffer_and_set_caps (GST_PAD_CAST (vdp_pad),
GST_BUFFER_OFFSET_NONE, 0, GST_PAD_CAPS (vdp_pad), &neg_buf);
if (ret == GST_FLOW_OK)
gst_buffer_unref (neg_buf);
*output_buf =
(GstVdpOutputBuffer *) gst_vdp_buffer_pool_get_buffer (vdp_pad->bpool,
error);
if (!*output_buf)
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
static void
gst_hermes_colorspace_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstHermesColorspace *space;
GstBuffer *outbuf = NULL;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
space = GST_HERMES_COLORSPACE (gst_pad_get_parent (pad));
g_return_if_fail (space != NULL);
g_return_if_fail (GST_IS_COLORSPACE (space));
if (space->passthru) {
gst_pad_push (space->srcpad, _data);
return;
}
if (GST_BUFFER_SIZE (buf) < space->sink_size) {
g_critical ("input size is smaller than expected");
}
outbuf =
gst_pad_alloc_buffer_and_set_caps (space->srcpad, GST_BUFFER_OFFSET_NONE,
space->src_size);
Hermes_ConverterCopy (space->h_handle,
GST_BUFFER_DATA (buf), 0, 0, space->width, space->height,
space->sink_stride, GST_BUFFER_DATA (outbuf), 0, 0,
space->width, space->height, space->src_stride);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
gst_buffer_unref (buf);
gst_pad_push (space->srcpad, GST_DATA (outbuf));
}
static GstFlowReturn
gst_teletextdec_export_rgba_page (GstTeletextDec * teletext, vbi_page * page,
GstBuffer ** buf)
{
guint size;
GstCaps *caps, *out_caps;
GstFlowReturn ret;
gint width, height;
GstPadTemplate *templ;
/* one character occupies 12 x 10 pixels */
width = page->columns * 12;
height = page->rows * 10;
caps = gst_caps_new_simple ("video/x-raw-rgb",
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
"framerate", GST_TYPE_FRACTION, teletext->rate_numerator,
teletext->rate_denominator, NULL);
templ = gst_static_pad_template_get (&src_template);
out_caps = gst_caps_intersect (caps, gst_pad_template_get_caps (templ));
gst_caps_unref (caps);
gst_object_unref (templ);
size = (guint) width *(guint) height *sizeof (vbi_rgba);
ret = gst_pad_alloc_buffer_and_set_caps (teletext->srcpad,
GST_BUFFER_OFFSET_NONE, size, out_caps, &(*buf));
if (ret == GST_FLOW_OK) {
GST_DEBUG_OBJECT (teletext, "Creating image with %d rows and %d cols",
page->rows, page->columns);
vbi_draw_vt_page (page, VBI_PIXFMT_RGBA32_LE,
(vbi_rgba *) GST_BUFFER_DATA (*buf), FALSE, TRUE);
}
gst_caps_unref (out_caps);
return ret;
}
static void
live_switch_push (int rate, GstCaps * caps)
{
GstBuffer *inbuffer;
GstCaps *desired;
GList *l;
desired = gst_caps_copy (caps);
gst_caps_set_simple (desired, "rate", G_TYPE_INT, rate, NULL);
gst_pad_set_caps (mysrcpad, desired);
#if 0
fail_unless (gst_pad_alloc_buffer_and_set_caps (mysrcpad,
GST_BUFFER_OFFSET_NONE, rate * 4, desired, &inbuffer) == GST_FLOW_OK);
#endif
inbuffer = gst_buffer_new_and_alloc (rate * 4);
gst_buffer_memset (inbuffer, 0, 0, rate * 4);
GST_BUFFER_DURATION (inbuffer) = GST_SECOND;
GST_BUFFER_TIMESTAMP (inbuffer) = 0;
GST_BUFFER_OFFSET (inbuffer) = 0;
/* pushing gives away my reference ... */
fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
/* ... but it ends up being collected on the global buffer list */
fail_unless_equals_int (g_list_length (buffers), 1);
for (l = buffers; l; l = l->next) {
GstBuffer *buffer = GST_BUFFER (l->data);
gst_buffer_unref (buffer);
}
g_list_free (buffers);
buffers = NULL;
gst_caps_unref (desired);
}
static GstFlowReturn
get_buffer (GstGoom * goom, GstBuffer ** outbuf)
{
GstFlowReturn ret;
if (GST_PAD_CAPS (goom->srcpad) == NULL) {
if (!gst_goom_src_negotiate (goom))
return GST_FLOW_NOT_NEGOTIATED;
}
GST_DEBUG_OBJECT (goom, "allocating output buffer with caps %"
GST_PTR_FORMAT, GST_PAD_CAPS (goom->srcpad));
ret =
gst_pad_alloc_buffer_and_set_caps (goom->srcpad,
GST_BUFFER_OFFSET_NONE, goom->outsize,
GST_PAD_CAPS (goom->srcpad), outbuf);
if (ret != GST_FLOW_OK)
return ret;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_vdp_output_src_pad_alloc_with_caps (GstVdpOutputSrcPad * vdp_pad,
GstCaps * caps, GstVdpOutputBuffer ** output_buf, GError ** error)
{
GstFlowReturn ret;
ret = gst_pad_alloc_buffer_and_set_caps ((GstPad *) vdp_pad, 0, 0, caps,
(GstBuffer **) output_buf);
if (ret != GST_FLOW_OK)
return ret;
if (!GST_IS_VDP_OUTPUT_BUFFER (*output_buf))
goto invalid_buf;
return GST_FLOW_OK;
invalid_buf:
gst_buffer_unref (GST_BUFFER (*output_buf));
g_set_error (error, GST_STREAM_ERROR, GST_STREAM_ERROR_FAILED,
"Sink element returned buffer of wrong type");
return GST_FLOW_ERROR;
}
GstFlowReturn
gst_base_video_decoder_alloc_src_frame (GstBaseVideoDecoder *
base_video_decoder, GstVideoFrame * frame)
{
GstFlowReturn flow_ret;
int num_bytes;
gst_base_video_decoder_set_src_caps (base_video_decoder);
num_bytes = gst_video_format_get_size (base_video_decoder->state.format,
base_video_decoder->state.width, base_video_decoder->state.height);
flow_ret =
gst_pad_alloc_buffer_and_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD
(base_video_decoder), GST_BUFFER_OFFSET_NONE, num_bytes,
GST_PAD_CAPS (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder)),
&frame->src_buffer);
if (flow_ret != GST_FLOW_OK) {
GST_WARNING ("failed to get buffer");
}
return flow_ret;
}
static int
gst_ffmpegdata_write (URLContext * h, unsigned char *buf, int size)
{
GstProtocolInfo *info;
GstBuffer *outbuf;
GST_DEBUG ("Writing %d bytes", size);
info = (GstProtocolInfo *) h->priv_data;
g_return_val_if_fail (h->flags != URL_RDONLY, -EIO);
/* create buffer and push data further */
if (gst_pad_alloc_buffer_and_set_caps (info->pad,
info->offset, size, GST_PAD_CAPS (info->pad), &outbuf) != GST_FLOW_OK)
return 0;
memcpy (GST_BUFFER_DATA (outbuf), buf, size);
if (gst_pad_push (info->pad, outbuf) != GST_FLOW_OK)
return 0;
info->offset += size;
return size;
}
static int
gst_wavpack_enc_push_block (void *id, void *data, int32_t count)
{
GstWavpackEncWriteID *wid = (GstWavpackEncWriteID *) id;
GstWavpackEnc *enc = GST_WAVPACK_ENC (wid->wavpack_enc);
GstFlowReturn *flow;
GstBuffer *buffer;
GstPad *pad;
guchar *block = (guchar *) data;
pad = (wid->correction) ? enc->wvcsrcpad : enc->srcpad;
flow =
(wid->correction) ? &enc->wvcsrcpad_last_return : &enc->
srcpad_last_return;
*flow = gst_pad_alloc_buffer_and_set_caps (pad, GST_BUFFER_OFFSET_NONE,
count, GST_PAD_CAPS (pad), &buffer);
if (*flow != GST_FLOW_OK) {
GST_WARNING_OBJECT (enc, "flow on %s:%s = %s",
GST_DEBUG_PAD_NAME (pad), gst_flow_get_name (*flow));
return FALSE;
}
g_memmove (GST_BUFFER_DATA (buffer), block, count);
if (count > sizeof (WavpackHeader) && memcmp (block, "wvpk", 4) == 0) {
/* if it's a Wavpack block set buffer timestamp and duration, etc */
WavpackHeader wph;
GST_LOG_OBJECT (enc, "got %d bytes of encoded wavpack %sdata",
count, (wid->correction) ? "correction " : "");
gst_wavpack_read_header (&wph, block);
/* Only set when pushing the first buffer again, in that case
* we don't want to delay the buffer or push newsegment events
*/
if (!wid->passthrough) {
/* Only push complete blocks */
if (enc->pending_buffer == NULL) {
enc->pending_buffer = buffer;
enc->pending_offset = wph.block_index;
} else if (enc->pending_offset == wph.block_index) {
enc->pending_buffer = gst_buffer_join (enc->pending_buffer, buffer);
} else {
GST_ERROR ("Got incomplete block, dropping");
gst_buffer_unref (enc->pending_buffer);
enc->pending_buffer = buffer;
enc->pending_offset = wph.block_index;
}
if (!(wph.flags & FINAL_BLOCK))
return TRUE;
buffer = enc->pending_buffer;
enc->pending_buffer = NULL;
enc->pending_offset = 0;
/* if it's the first wavpack block, send a NEW_SEGMENT event */
if (wph.block_index == 0) {
gst_pad_push_event (pad,
gst_event_new_new_segment (FALSE,
1.0, GST_FORMAT_TIME, 0, GST_BUFFER_OFFSET_NONE, 0));
/* save header for later reference, so we can re-send it later on
* EOS with fixed up values for total sample count etc. */
if (enc->first_block == NULL && !wid->correction) {
enc->first_block =
g_memdup (GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
enc->first_block_size = GST_BUFFER_SIZE (buffer);
}
}
}
/* set buffer timestamp, duration, offset, offset_end from
* the wavpack header */
GST_BUFFER_TIMESTAMP (buffer) = enc->timestamp_offset +
gst_util_uint64_scale_int (GST_SECOND, wph.block_index,
enc->samplerate);
GST_BUFFER_DURATION (buffer) =
gst_util_uint64_scale_int (GST_SECOND, wph.block_samples,
enc->samplerate);
GST_BUFFER_OFFSET (buffer) = wph.block_index;
GST_BUFFER_OFFSET_END (buffer) = wph.block_index + wph.block_samples;
} else {
/* if it's something else set no timestamp and duration on the buffer */
GST_DEBUG_OBJECT (enc, "got %d bytes of unknown data", count);
GST_BUFFER_TIMESTAMP (buffer) = GST_CLOCK_TIME_NONE;
GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
}
/* push the buffer and forward errors */
GST_DEBUG_OBJECT (enc, "pushing buffer with %d bytes",
GST_BUFFER_SIZE (buffer));
*flow = gst_pad_push (pad, buffer);
if (*flow != GST_FLOW_OK) {
GST_WARNING_OBJECT (enc, "flow on %s:%s = %s",
GST_DEBUG_PAD_NAME (pad), gst_flow_get_name (*flow));
return FALSE;
}
return TRUE;
}
static void
gst_pngdec_task (GstPad * pad)
{
GstPngDec *pngdec;
GstBuffer *buffer = NULL;
size_t buffer_size = 0;
gint i = 0;
png_bytep *rows, inp;
png_uint_32 rowbytes;
GstFlowReturn ret = GST_FLOW_OK;
pngdec = GST_PNGDEC (GST_OBJECT_PARENT (pad));
GST_LOG_OBJECT (pngdec, "read frame");
/* Let libpng come back here on error */
if (setjmp (png_jmpbuf (pngdec->png))) {
ret = GST_FLOW_ERROR;
goto pause;
}
/* Set reading callback */
png_set_read_fn (pngdec->png, pngdec, user_read_data);
/* Read info */
png_read_info (pngdec->png, pngdec->info);
/* Generate the caps and configure */
ret = gst_pngdec_caps_create_and_set (pngdec);
if (ret != GST_FLOW_OK) {
goto pause;
}
/* Allocate output buffer */
rowbytes = png_get_rowbytes (pngdec->png, pngdec->info);
if (rowbytes > (G_MAXUINT32 - 3) || pngdec->height > G_MAXUINT32 / rowbytes) {
ret = GST_FLOW_ERROR;
goto pause;
}
rowbytes = GST_ROUND_UP_4 (rowbytes);
buffer_size = pngdec->height * rowbytes;
ret =
gst_pad_alloc_buffer_and_set_caps (pngdec->srcpad, GST_BUFFER_OFFSET_NONE,
buffer_size, GST_PAD_CAPS (pngdec->srcpad), &buffer);
if (ret != GST_FLOW_OK)
goto pause;
rows = (png_bytep *) g_malloc (sizeof (png_bytep) * pngdec->height);
inp = GST_BUFFER_DATA (buffer);
for (i = 0; i < pngdec->height; i++) {
rows[i] = inp;
inp += rowbytes;
}
/* Read the actual picture */
png_read_image (pngdec->png, rows);
g_free (rows);
/* Push the raw RGB frame */
ret = gst_pad_push (pngdec->srcpad, buffer);
if (ret != GST_FLOW_OK)
goto pause;
/* And we are done */
gst_pad_pause_task (pngdec->sinkpad);
gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ());
return;
pause:
{
GST_INFO_OBJECT (pngdec, "pausing task, reason %s",
gst_flow_get_name (ret));
gst_pad_pause_task (pngdec->sinkpad);
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
GST_ELEMENT_ERROR (pngdec, STREAM, FAILED,
(_("Internal data stream error.")),
("stream stopped, reason %s", gst_flow_get_name (ret)));
gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ());
}
}
}
static GstFlowReturn
gst_jasper_enc_get_data (GstJasperEnc * enc, guint8 * data, GstBuffer ** outbuf)
{
GstFlowReturn ret = GST_FLOW_OK;
jas_stream_t *stream = NULL;
gint i;
guint size, boxsize;
g_return_val_if_fail (outbuf != NULL, GST_FLOW_ERROR);
*outbuf = NULL;
boxsize = (enc->mode == GST_JP2ENC_MODE_J2C) ? 8 : 0;
if (!(stream = jas_stream_memopen (NULL, 0)))
goto fail_stream;
for (i = 0; i < enc->channels; ++i) {
gint x, y, cwidth, cheight, inc, stride, cmpt;
guint8 *row_pix, *in_pix;
glong *tb;
cmpt = i;
inc = enc->inc[i];
stride = enc->stride[i];
cheight = enc->cheight[cmpt];
cwidth = enc->cwidth[cmpt];
GST_LOG_OBJECT (enc,
"write component %d<=%d, size %dx%d, offset %d, inc %d, stride %d",
i, cmpt, cwidth, cheight, enc->offset[i], inc, stride);
row_pix = data + enc->offset[i];
for (y = 0; y < cheight; y++) {
in_pix = row_pix;
tb = enc->buf;
for (x = 0; x < cwidth; x++) {
*tb = *in_pix;
in_pix += inc;
tb++;
}
if (jas_image_writecmpt2 (enc->image, cmpt, 0, y, cwidth, 1, enc->buf))
goto fail_image;
row_pix += stride;
}
}
GST_LOG_OBJECT (enc, "all components written");
if (jas_image_encode (enc->image, stream, enc->fmt, (char *) "sop"))
goto fail_encode;
GST_LOG_OBJECT (enc, "image encoded");
size = jas_stream_length (stream);
ret = gst_pad_alloc_buffer_and_set_caps (enc->srcpad,
GST_BUFFER_OFFSET_NONE, size + boxsize, GST_PAD_CAPS (enc->srcpad),
outbuf);
if (ret != GST_FLOW_OK)
goto no_buffer;
data = GST_BUFFER_DATA (*outbuf);
if (jas_stream_flush (stream) ||
jas_stream_rewind (stream) < 0 ||
jas_stream_read (stream, data + boxsize, size) < size)
goto fail_image_out;
if (boxsize) {
/* write atom prefix */
GST_WRITE_UINT32_BE (data, size + 8);
GST_WRITE_UINT32_LE (data + 4, GST_MAKE_FOURCC ('j', 'p', '2', 'c'));
}
done:
if (stream)
jas_stream_close (stream);
return ret;
/* ERRORS */
fail_stream:
{
GST_DEBUG_OBJECT (enc, "Failed to create inputstream.");
goto fail;
}
fail_encode:
{
GST_DEBUG_OBJECT (enc, "Failed to encode image.");
goto fail;
}
fail_image:
{
GST_DEBUG_OBJECT (enc, "Failed to process input image.");
goto fail;
}
fail_image_out:
{
GST_DEBUG_OBJECT (enc, "Failed to process encoded image.");
goto fail;
}
fail:
{
if (*outbuf)
gst_buffer_unref (*outbuf);
*outbuf = NULL;
GST_ELEMENT_ERROR (enc, STREAM, ENCODE, (NULL), (NULL));
ret = GST_FLOW_ERROR;
goto done;
}
no_buffer:
{
GST_DEBUG_OBJECT (enc, "Failed to create outbuffer - %s",
gst_flow_get_name (ret));
goto done;
}
}
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_rsvg_decode_image (GstRsvgDec * rsvg, const guint8 * data, guint size,
GstBuffer ** buffer)
{
GstFlowReturn ret = GST_FLOW_OK;
cairo_t *cr;
cairo_surface_t *surface;
RsvgHandle *handle;
GError *error = NULL;
RsvgDimensionData dimension;
gdouble scalex, scaley;
GST_LOG_OBJECT (rsvg, "parsing svg");
handle = rsvg_handle_new_from_data (data, size, &error);
if (!handle) {
GST_ERROR_OBJECT (rsvg, "Failed to parse SVG image: %s", error->message);
g_error_free (error);
return GST_FLOW_ERROR;
}
rsvg_handle_get_dimensions (handle, &dimension);
if (rsvg->width != dimension.width || rsvg->height != dimension.height) {
GstCaps *caps1, *caps2, *caps3;
GstStructure *s;
GST_LOG_OBJECT (rsvg, "resolution changed, updating caps");
caps1 = gst_caps_copy (gst_pad_get_pad_template_caps (rsvg->srcpad));
caps2 = gst_pad_peer_get_caps (rsvg->srcpad);
if (caps2) {
caps3 = gst_caps_intersect (caps1, caps2);
gst_caps_unref (caps1);
gst_caps_unref (caps2);
caps1 = caps3;
caps3 = NULL;
}
if (gst_caps_is_empty (caps1)) {
GST_ERROR_OBJECT (rsvg, "Unable to negotiate a format");
gst_caps_unref (caps1);
g_object_unref (handle);
return GST_FLOW_NOT_NEGOTIATED;
}
caps2 = gst_caps_copy (gst_pad_get_pad_template_caps (rsvg->srcpad));
s = gst_caps_get_structure (caps2, 0);
gst_structure_set (s, "width", G_TYPE_INT, dimension.width, "height",
G_TYPE_INT, dimension.height, "framerate", GST_TYPE_FRACTION, 0, 1,
NULL);
caps3 = gst_caps_intersect (caps1, caps2);
if (!gst_caps_is_empty (caps3)) {
gst_caps_truncate (caps3);
gst_pad_set_caps (rsvg->srcpad, caps3);
gst_caps_unref (caps1);
gst_caps_unref (caps2);
gst_caps_unref (caps3);
rsvg->width = dimension.width;
rsvg->height = dimension.height;
} else {
gst_caps_unref (caps2);
gst_caps_unref (caps3);
gst_caps_truncate (caps1);
s = gst_caps_get_structure (caps1, 0);
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
if (!gst_caps_is_fixed (caps1)
&& (!gst_structure_fixate_field_nearest_int (s, "width",
dimension.width)
|| !gst_structure_fixate_field_nearest_int (s, "height",
dimension.height))) {
g_object_unref (handle);
GST_ERROR_OBJECT (rsvg, "Failed to fixate caps");
return GST_FLOW_NOT_NEGOTIATED;
}
gst_pad_set_caps (rsvg->srcpad, caps1);
gst_structure_get_int (s, "width", &rsvg->width);
gst_structure_get_int (s, "height", &rsvg->height);
gst_caps_unref (caps1);
}
}
if ((ret = gst_pad_alloc_buffer_and_set_caps (rsvg->srcpad,
GST_BUFFER_OFFSET_NONE,
rsvg->width * rsvg->height * 4,
GST_PAD_CAPS (rsvg->srcpad), buffer)) != GST_FLOW_OK) {
g_object_unref (handle);
GST_ERROR_OBJECT (rsvg, "Buffer allocation failed %s",
gst_flow_get_name (ret));
return ret;
}
GST_LOG_OBJECT (rsvg, "render image at %d x %d", rsvg->height, rsvg->width);
surface =
cairo_image_surface_create_for_data (GST_BUFFER_DATA (*buffer),
CAIRO_FORMAT_ARGB32, rsvg->width, rsvg->height, rsvg->width * 4);
cr = cairo_create (surface);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
scalex = scaley = 1.0;
if (rsvg->width != dimension.width) {
scalex = ((gdouble) rsvg->width) / ((gdouble) dimension.width);
}
if (rsvg->height != dimension.height) {
scaley = ((gdouble) rsvg->height) / ((gdouble) dimension.height);
}
cairo_scale (cr, scalex, scaley);
rsvg_handle_render_cairo (handle, cr);
g_object_unref (handle);
cairo_destroy (cr);
cairo_surface_destroy (surface);
/* Now unpremultiply Cairo's ARGB to match GStreamer's */
gst_rsvg_decode_unpremultiply (GST_BUFFER_DATA (*buffer), rsvg->width,
rsvg->height);
return ret;
}
static GstFlowReturn
gst_gdk_pixbuf_flush (GstGdkPixbuf * filter)
{
GstBuffer *outbuf;
GdkPixbuf *pixbuf;
int y;
guint8 *out_pix;
guint8 *in_pix;
int in_rowstride;
GstFlowReturn ret;
GstCaps *caps = NULL;
gint n_channels;
pixbuf = gdk_pixbuf_loader_get_pixbuf (filter->pixbuf_loader);
if (pixbuf == NULL)
goto no_pixbuf;
if (filter->image_size == 0) {
filter->width = gdk_pixbuf_get_width (pixbuf);
filter->height = gdk_pixbuf_get_height (pixbuf);
filter->rowstride = gdk_pixbuf_get_rowstride (pixbuf);
filter->image_size = filter->rowstride * filter->height;
n_channels = gdk_pixbuf_get_n_channels (pixbuf);
switch (n_channels) {
case 3:
caps = gst_caps_from_string (GST_VIDEO_CAPS_RGB);
break;
case 4:
caps = gst_caps_from_string (GST_VIDEO_CAPS_RGBA);
break;
default:
goto channels_not_supported;
}
gst_caps_set_simple (caps,
"width", G_TYPE_INT, filter->width,
"height", G_TYPE_INT, filter->height,
"framerate", GST_TYPE_FRACTION, filter->framerate_numerator,
filter->framerate_denominator, NULL);
GST_DEBUG ("Set size to %dx%d", filter->width, filter->height);
gst_pad_set_caps (filter->srcpad, caps);
gst_caps_unref (caps);
}
ret = gst_pad_alloc_buffer_and_set_caps (filter->srcpad,
GST_BUFFER_OFFSET_NONE,
filter->image_size, GST_PAD_CAPS (filter->srcpad), &outbuf);
if (ret != GST_FLOW_OK)
goto no_buffer;
GST_BUFFER_TIMESTAMP (outbuf) = filter->last_timestamp;
GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
in_pix = gdk_pixbuf_get_pixels (pixbuf);
in_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
out_pix = GST_BUFFER_DATA (outbuf);
/* FIXME, last line might not have rowstride pixels */
for (y = 0; y < filter->height; y++) {
memcpy (out_pix, in_pix, filter->rowstride);
in_pix += in_rowstride;
out_pix += filter->rowstride;
}
GST_DEBUG ("pushing... %d bytes", GST_BUFFER_SIZE (outbuf));
ret = gst_pad_push (filter->srcpad, outbuf);
if (ret != GST_FLOW_OK)
GST_DEBUG_OBJECT (filter, "flow: %s", gst_flow_get_name (ret));
return ret;
/* ERRORS */
no_pixbuf:
{
GST_ELEMENT_ERROR (filter, STREAM, DECODE, (NULL), ("error geting pixbuf"));
return GST_FLOW_ERROR;
}
channels_not_supported:
{
GST_ELEMENT_ERROR (filter, STREAM, DECODE, (NULL),
("%d channels not supported", n_channels));
return GST_FLOW_ERROR;
}
no_buffer:
{
GST_DEBUG ("Failed to create outbuffer - %s", gst_flow_get_name (ret));
return ret;
}
}
