static GstStateChangeReturn
gst_rsvg_dec_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn res;
GstRsvgDec *dec = GST_RSVG_DEC (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
default:
break;
}
res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (res == GST_STATE_CHANGE_FAILURE)
return res;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_rsvg_dec_reset (dec);
break;
default:
break;
}
return res;
}
static GstFlowReturn
gst_rsvg_dec_parse (GstVideoDecoder * decoder, GstVideoCodecFrame * frame,
GstAdapter * adapter, gboolean at_eos)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (decoder);
gboolean completed = FALSE;
const guint8 *data;
guint size;
guint i;
GST_LOG_OBJECT (rsvg, "parse start");
size = gst_adapter_available (adapter);
/* "<svg></svg>" */
if (size < 5 + 6)
return GST_VIDEO_DECODER_FLOW_NEED_DATA;
data = gst_adapter_map (adapter, size);
if (data == NULL) {
GST_ERROR_OBJECT (rsvg, "Unable to map memory");
return GST_FLOW_ERROR;
}
for (i = 0; i < size - 4; i++) {
if (memcmp (data + i, "<svg", 4) == 0) {
gst_adapter_flush (adapter, i);
size = gst_adapter_available (adapter);
if (size < 5 + 6)
return GST_VIDEO_DECODER_FLOW_NEED_DATA;
data = gst_adapter_map (adapter, size);
if (data == NULL) {
GST_ERROR_OBJECT (rsvg, "Unable to map memory");
return GST_FLOW_ERROR;
}
break;
}
}
/* If start wasn't found: */
if (i == size - 4) {
gst_adapter_flush (adapter, size - 4);
return GST_VIDEO_DECODER_FLOW_NEED_DATA;
}
for (i = size - 6; i >= 5; i--) {
if (memcmp (data + i, "</svg>", 6) == 0) {
completed = TRUE;
size = i + 6;
break;
}
}
if (completed) {
GST_LOG_OBJECT (rsvg, "have complete svg of %u bytes", size);
gst_video_decoder_add_to_frame (decoder, size);
return gst_video_decoder_have_frame (decoder);
}
return GST_VIDEO_DECODER_FLOW_NEED_DATA;
}
static gboolean
gst_rsvg_dec_reset (GstVideoDecoder * decoder, gboolean hard)
{
GstRsvgDec *dec = GST_RSVG_DEC (decoder);
dec_reset (dec);
return TRUE;
}
static void
gst_rsvg_dec_finalize (GObject * object)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (object);
if (rsvg->adapter) {
g_object_unref (rsvg->adapter);
rsvg->adapter = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_rsvg_dec_stop (GstVideoDecoder * decoder)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (decoder);
if (rsvg->input_state) {
gst_video_codec_state_unref (rsvg->input_state);
rsvg->input_state = NULL;
}
return TRUE;
}
static gboolean
gst_rsvg_dec_sink_set_caps (GstPad * pad, GstCaps * caps)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (gst_pad_get_parent (pad));
gboolean ret = TRUE;
GstStructure *s = gst_caps_get_structure (caps, 0);
gst_structure_get_fraction (s, "framerate", &rsvg->fps_n, &rsvg->fps_d);
gst_object_unref (rsvg);
return ret;
}
static gboolean
gst_rsvg_dec_src_set_caps (GstPad * pad, GstCaps * caps)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (gst_pad_get_parent (pad));
gboolean ret = TRUE;
GstStructure *s = gst_caps_get_structure (caps, 0);
ret &= gst_structure_get_int (s, "width", &rsvg->width);
ret &= gst_structure_get_int (s, "height", &rsvg->height);
gst_object_unref (rsvg);
return ret;
}
static gboolean
gst_rsvg_dec_sink_event (GstPad * pad, GstEvent * event)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (gst_pad_get_parent (pad));
gboolean res = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:{
gdouble rate, arate;
gboolean update;
gint64 start, stop, position;
GstFormat fmt;
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &fmt,
&start, &stop, &position);
gst_segment_set_newsegment_full (&rsvg->segment, update, rate, arate,
fmt, start, stop, position);
if (fmt == GST_FORMAT_TIME) {
rsvg->need_newsegment = FALSE;
res = gst_pad_push_event (rsvg->srcpad, event);
} else {
gst_event_unref (event);
res = TRUE;
}
break;
}
case GST_EVENT_EOS:
case GST_EVENT_FLUSH_STOP:
gst_adapter_clear (rsvg->adapter);
/* fall through */
case GST_EVENT_FLUSH_START:
res = gst_pad_push_event (rsvg->srcpad, event);
break;
default:
if (GST_PAD_CAPS (rsvg->srcpad)) {
res = gst_pad_push_event (rsvg->srcpad, event);
} else {
res = TRUE;
rsvg->pending_events = g_list_append (rsvg->pending_events, event);
}
break;
}
gst_object_unref (rsvg);
return res;
}
static gboolean
gst_rsvg_dec_src_query (GstPad * pad, GstQuery * query)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (gst_pad_get_parent (pad));
gboolean res = TRUE;
switch (GST_QUERY_TYPE (query)) {
default:
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (rsvg);
return res;
}
static gboolean
gst_rsvg_dec_src_event (GstPad * pad, GstEvent * event)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (gst_pad_get_parent (pad));
gboolean res = FALSE;
switch (GST_EVENT_TYPE (event)) {
default:
res = gst_pad_push_event (rsvg->sinkpad, event);
break;
}
gst_object_unref (rsvg);
return res;
}
static gboolean
gst_rsvg_dec_set_format (GstVideoDecoder * decoder, GstVideoCodecState * state)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (decoder);
GstVideoInfo *info = &state->info;
if (rsvg->input_state)
gst_video_codec_state_unref (rsvg->input_state);
rsvg->input_state = gst_video_codec_state_ref (state);
/* Create the output state */
gst_video_decoder_set_output_state (decoder, GST_RSVG_VIDEO_FORMAT,
GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info),
rsvg->input_state);
return TRUE;
}
static GstFlowReturn
gst_rsvg_dec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (decoder);
gboolean ret;
ret = gst_rsvg_decode_image (rsvg, frame->input_buffer, frame);
switch (ret) {
case GST_FLOW_OK:
ret = gst_video_decoder_finish_frame (decoder, frame);
break;
default:
gst_video_codec_frame_unref (frame);
break;
}
GST_LOG_OBJECT (rsvg, "Handle frame done");
return ret;
}
static GstFlowReturn
gst_rsvg_dec_chain (GstPad * pad, GstBuffer * buffer)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (GST_PAD_PARENT (pad));
gboolean completed = FALSE;
const guint8 *data;
guint size;
gboolean ret = GST_FLOW_OK;
/* first_timestamp is used slightly differently where a framerate
is given or not.
If there is a frame rate, it will be used as a base.
If there is not, it will be used to keep track of the timestamp
of the first buffer, to be used as the timestamp of the output
buffer. When a buffer is output, first timestamp will resync to
the next buffer's timestamp. */
if (rsvg->first_timestamp == GST_CLOCK_TIME_NONE) {
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
rsvg->first_timestamp = GST_BUFFER_TIMESTAMP (buffer);
else if (rsvg->fps_n != 0)
rsvg->first_timestamp = 0;
}
gst_adapter_push (rsvg->adapter, buffer);
size = gst_adapter_available (rsvg->adapter);
/* "<svg></svg>" */
while (size >= 5 + 6 && ret == GST_FLOW_OK) {
guint i;
data = gst_adapter_peek (rsvg->adapter, size);
for (i = size - 6; i >= 5; i--) {
if (memcmp (data + i, "</svg>", 6) == 0) {
completed = TRUE;
size = i + 6;
break;
}
}
if (completed) {
GstBuffer *outbuf = NULL;
GST_LOG_OBJECT (rsvg, "have complete svg of %u bytes", size);
data = gst_adapter_peek (rsvg->adapter, size);
ret = gst_rsvg_decode_image (rsvg, data, size, &outbuf);
if (ret != GST_FLOW_OK)
break;
if (rsvg->first_timestamp != GST_CLOCK_TIME_NONE) {
GST_BUFFER_TIMESTAMP (outbuf) = rsvg->first_timestamp;
GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
GstClockTime end =
GST_BUFFER_TIMESTAMP_IS_VALID (buffer) ?
GST_BUFFER_TIMESTAMP (buffer) : rsvg->first_timestamp;
end += GST_BUFFER_DURATION (buffer);
GST_BUFFER_DURATION (outbuf) = end - GST_BUFFER_TIMESTAMP (outbuf);
}
if (rsvg->fps_n == 0) {
rsvg->first_timestamp = GST_CLOCK_TIME_NONE;
} else {
GST_BUFFER_DURATION (outbuf) =
gst_util_uint64_scale (rsvg->frame_count, rsvg->fps_d,
rsvg->fps_n * GST_SECOND);
}
} else if (rsvg->fps_n != 0) {
GST_BUFFER_TIMESTAMP (outbuf) =
rsvg->first_timestamp + gst_util_uint64_scale (rsvg->frame_count,
rsvg->fps_d, rsvg->fps_n * GST_SECOND);
GST_BUFFER_DURATION (outbuf) =
gst_util_uint64_scale (rsvg->frame_count, rsvg->fps_d,
rsvg->fps_n * GST_SECOND);
} else {
GST_BUFFER_TIMESTAMP (outbuf) = rsvg->first_timestamp;
GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
}
rsvg->frame_count++;
if (rsvg->need_newsegment) {
gst_pad_push_event (rsvg->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1, 0));
rsvg->need_newsegment = FALSE;
}
if (rsvg->pending_events) {
GList *l;
for (l = rsvg->pending_events; l; l = l->next)
gst_pad_push_event (rsvg->srcpad, l->data);
g_list_free (rsvg->pending_events);
rsvg->pending_events = NULL;
}
GST_LOG_OBJECT (rsvg, "image rendered okay");
ret = gst_pad_push (rsvg->srcpad, outbuf);
if (ret != GST_FLOW_OK)
break;
gst_adapter_flush (rsvg->adapter, size);
size = gst_adapter_available (rsvg->adapter);
continue;
} else {
break;
}
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_rsvg_dec_chain (GstPad * pad, GstBuffer * buffer)
{
GstRsvgDec *rsvg = GST_RSVG_DEC (gst_pad_get_parent (pad));
gboolean completed = FALSE;
const guint8 *data;
guint size;
gboolean ret = GST_FLOW_OK;
if (rsvg->timestamp_offset == GST_CLOCK_TIME_NONE) {
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
rsvg->timestamp_offset = GST_BUFFER_TIMESTAMP (buffer);
else
rsvg->timestamp_offset = 0;
}
gst_adapter_push (rsvg->adapter, buffer);
size = gst_adapter_available (rsvg->adapter);
/* "<svg></svg>" */
while (size >= 5 + 6 && ret == GST_FLOW_OK) {
guint i;
data = gst_adapter_peek (rsvg->adapter, size);
for (i = size - 6; i >= 5; i--) {
if (memcmp (data + i, "</svg>", 6) == 0) {
completed = TRUE;
size = i + 6;
break;
}
}
if (completed) {
GstBuffer *outbuf = NULL;
data = gst_adapter_peek (rsvg->adapter, size);
ret = gst_rsvg_decode_image (rsvg, data, size, &outbuf);
if (ret != GST_FLOW_OK)
break;
if (rsvg->fps_n != 0) {
GST_BUFFER_TIMESTAMP (outbuf) =
rsvg->timestamp_offset + gst_util_uint64_scale (rsvg->frame_count,
rsvg->fps_d, rsvg->fps_n * GST_SECOND);
GST_BUFFER_DURATION (outbuf) =
gst_util_uint64_scale (rsvg->frame_count, rsvg->fps_d,
rsvg->fps_n * GST_SECOND);
} else {
GST_BUFFER_TIMESTAMP (outbuf) = 0;
}
rsvg->frame_count++;
if (rsvg->need_newsegment) {
gst_pad_push_event (rsvg->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1, 0));
rsvg->need_newsegment = FALSE;
}
if (rsvg->pending_events) {
GList *l;
for (l = rsvg->pending_events; l; l = l->next)
gst_pad_push_event (rsvg->srcpad, l->data);
g_list_free (rsvg->pending_events);
rsvg->pending_events = NULL;
}
if (rsvg->pending_tags) {
gst_element_found_tags (GST_ELEMENT_CAST (rsvg), rsvg->pending_tags);
rsvg->pending_tags = NULL;
}
ret = gst_pad_push (rsvg->srcpad, outbuf);
if (ret != GST_FLOW_OK)
break;
gst_adapter_flush (rsvg->adapter, size);
size = gst_adapter_available (rsvg->adapter);
continue;
} else {
break;
}
}
gst_object_unref (rsvg);
return GST_FLOW_OK;
}
