/* SmokeDec signals and args */
enum
{
- /* FILL ME */
LAST_SIGNAL
};
enum
{
- ARG_0
- /* FILL ME */
+ PROP_0
};
static void gst_smokedec_base_init (gpointer g_class);
static void gst_smokedec_class_init (GstSmokeDec * klass);
static void gst_smokedec_init (GstSmokeDec * smokedec);
-static void gst_smokedec_chain (GstPad * pad, GstData * _data);
-static GstPadLinkReturn gst_smokedec_link (GstPad * pad, const GstCaps * caps);
+static GstFlowReturn gst_smokedec_chain (GstPad * pad, GstBuffer * buf);
static GstElementClass *parent_class = NULL;
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-smoke, "
"width = (int) [ 16, 4096 ], "
- "height = (int) [ 16, 4096 ], " "framerate = (double) [ 1, MAX ]")
+ "height = (int) [ 16, 4096 ], " "framerate = (fraction) [ 0/1, MAX ]")
);
static void
static void
gst_smokedec_init (GstSmokeDec * smokedec)
{
- GST_DEBUG ("gst_smokedec_init: initializing");
+ GST_DEBUG_OBJECT (smokedec, "gst_smokedec_init: initializing");
/* create the sink and src pads */
smokedec->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_smokedec_sink_pad_template), "sink");
- gst_element_add_pad (GST_ELEMENT (smokedec), smokedec->sinkpad);
gst_pad_set_chain_function (smokedec->sinkpad, gst_smokedec_chain);
- gst_pad_set_link_function (smokedec->sinkpad, gst_smokedec_link);
+ gst_element_add_pad (GST_ELEMENT (smokedec), smokedec->sinkpad);
smokedec->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_smokedec_src_pad_template), "src");
- gst_pad_use_explicit_caps (smokedec->srcpad);
+ gst_pad_use_fixed_caps (smokedec->srcpad);
gst_element_add_pad (GST_ELEMENT (smokedec), smokedec->srcpad);
/* reset the initial video state */
smokedec->format = -1;
smokedec->width = -1;
smokedec->height = -1;
+ smokedec->fps_num = -1;
+ smokedec->fps_denom = -1;
smokedec->next_time = 0;
-}
-
-static GstPadLinkReturn
-gst_smokedec_link (GstPad * pad, const GstCaps * caps)
-{
- GstSmokeDec *smokedec = GST_SMOKEDEC (gst_pad_get_parent (pad));
- GstStructure *structure;
- GstCaps *srccaps;
-
- structure = gst_caps_get_structure (caps, 0);
-
- gst_structure_get_double (structure, "framerate", &smokedec->fps);
- gst_structure_get_int (structure, "width", &smokedec->width);
- gst_structure_get_int (structure, "height", &smokedec->height);
-
- srccaps = gst_caps_new_simple ("video/x-raw-yuv",
- "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I', '4', '2', '0'),
- "width", G_TYPE_INT, smokedec->width,
- "height", G_TYPE_INT, smokedec->height,
- "framerate", G_TYPE_DOUBLE, smokedec->fps, NULL);
-
- /* at this point, we're pretty sure that this will be the output
- * format, so we'll set it. */
- gst_pad_set_explicit_caps (smokedec->srcpad, srccaps);
smokecodec_decode_new (&smokedec->info);
-
- return GST_PAD_LINK_OK;
}
-static void
-gst_smokedec_chain (GstPad * pad, GstData * _data)
+static GstFlowReturn
+gst_smokedec_chain (GstPad * pad, GstBuffer * buf)
{
- GstBuffer *buf = GST_BUFFER (_data);
GstSmokeDec *smokedec;
- guchar *data, *outdata;
+ guint8 *data, *outdata;
gulong size, outsize;
GstBuffer *outbuf;
SmokeCodecFlags flags;
GstClockTime time;
+ guint width, height;
+ guint fps_num, fps_denom;
+ gint smokeret;
+ GstFlowReturn ret;
- gint width, height;
- gint fps_num, fps_denom;
-
- smokedec = GST_SMOKEDEC (GST_OBJECT_PARENT (pad));
+ smokedec = GST_SMOKEDEC (gst_pad_get_parent (pad));
- if (!GST_PAD_IS_LINKED (smokedec->srcpad)) {
- gst_buffer_unref (buf);
- return;
- }
-
- data = (guchar *) GST_BUFFER_DATA (buf);
+ data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
time = GST_BUFFER_TIMESTAMP (buf);
- GST_DEBUG ("gst_smokedec_chain: got buffer of %ld bytes in '%s'", size,
+ GST_DEBUG_OBJECT (smokedec,
+ "gst_smokedec_chain: got buffer of %ld bytes in '%s'", size,
GST_OBJECT_NAME (smokedec));
+ /* have the ID packet. */
if (data[0] == SMOKECODEC_TYPE_ID) {
- smokecodec_parse_id (smokedec->info, data, size);
- return;
+ smokeret = smokecodec_parse_id (smokedec->info, data, size);
+ if (smokeret != SMOKECODEC_OK)
+ goto header_error;
+
+ return GST_FLOW_OK;
}
- GST_DEBUG ("gst_smokedec_chain: reading header %08lx", *(gulong *) data);
+ /* now handle data packets */
+ GST_DEBUG_OBJECT (smokedec, "gst_smokedec_chain: reading header %08lx",
+ *(gulong *) data);
smokecodec_parse_header (smokedec->info, data, size, &flags, &width, &height,
&fps_num, &fps_denom);
+ if (smokedec->height != height || smokedec->width != width ||
+ smokedec->fps_num != fps_num || smokedec->fps_denom != fps_denom) {
+ GstCaps *caps;
+
+ smokedec->height = height;
+ smokedec->width = width;
+
+ caps = gst_caps_new_simple ("video/x-raw-yuv",
+ "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I', '4', '2', '0'),
+ "width", G_TYPE_INT, width,
+ "height", G_TYPE_INT, height,
+ "framerate", GST_TYPE_FRACTION, fps_num, fps_denom, NULL);
+
+ gst_pad_set_caps (smokedec->srcpad, caps);
+ gst_caps_unref (caps);
+ }
+
+
+ if (smokedec->need_keyframe) {
+ if (!(flags & SMOKECODEC_KEYFRAME))
+ goto keyframe_skip;
+
+ smokedec->need_keyframe = FALSE;
+ }
+
outbuf = gst_buffer_new ();
outsize = GST_BUFFER_SIZE (outbuf) = width * height + width * height / 2;
outdata = g_malloc (outsize);
GST_BUFFER_DURATION (outbuf) = GST_SECOND * fps_denom / fps_num;
GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buf);
+ gst_buffer_set_caps (outbuf, GST_PAD_CAPS (smokedec->srcpad));
if (time == GST_CLOCK_TIME_NONE) {
if (GST_BUFFER_OFFSET (buf) == -1) {
GST_BUFFER_TIMESTAMP (outbuf) = time;
smokedec->next_time = time + GST_BUFFER_DURATION (outbuf);
- if (smokedec->height != height) {
- GstCaps *caps;
-
- smokedec->height = height;
+ smokeret = smokecodec_decode (smokedec->info, data, size, outdata);
+ if (smokeret != SMOKECODEC_OK)
+ goto decode_error;
- caps = gst_caps_new_simple ("video/x-raw-yuv",
- "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I', '4', '2', '0'),
- "width", G_TYPE_INT, width,
- "height", G_TYPE_INT, height,
- "framerate", G_TYPE_DOUBLE, ((double) fps_num) / fps_denom, NULL);
- gst_pad_set_explicit_caps (smokedec->srcpad, caps);
- gst_caps_free (caps);
- }
+ GST_DEBUG_OBJECT (smokedec, "gst_smokedec_chain: sending buffer");
+ ret = gst_pad_push (smokedec->srcpad, outbuf);
- if (smokedec->need_keyframe) {
- if (flags & SMOKECODEC_KEYFRAME) {
- smokedec->need_keyframe = FALSE;
- } else {
- GST_DEBUG_OBJECT (smokedec, "dropping buffer while waiting for keyframe");
- gst_buffer_unref (buf);
- return;
- }
- }
+done:
+ gst_buffer_unref (buf);
+ gst_object_unref (smokedec);
- if (!smokedec->need_keyframe) {
- smokecodec_decode (smokedec->info, data, size, outdata);
- gst_buffer_unref (buf);
+ return ret;
- GST_DEBUG ("gst_smokedec_chain: sending buffer");
- gst_pad_push (smokedec->srcpad, GST_DATA (outbuf));
+ /* ERRORS */
+header_error:
+ {
+ GST_ELEMENT_ERROR (smokedec, STREAM, DECODE,
+ (NULL), ("Could not parse smoke header, reason: %d", smokeret));
+ ret = GST_FLOW_ERROR;
+ goto done;
+ }
+keyframe_skip:
+ {
+ GST_DEBUG_OBJECT (smokedec, "dropping buffer while waiting for keyframe");
+ ret = GST_FLOW_OK;
+ goto done;
+ }
+decode_error:
+ {
+ GST_ELEMENT_ERROR (smokedec, STREAM, DECODE,
+ (NULL), ("Could not decode smoke frame, reason: %d", smokeret));
+ ret = GST_FLOW_ERROR;
+ goto done;
}
}
projects / platform / upstream / gst-plugins-good.git / commitdiff