static GstCaps *
gst_real_video_dec_getcaps (GstPad * pad)
{
GstRealVideoDec *dec = GST_REAL_VIDEO_DEC (GST_PAD_PARENT (pad));
GstCaps *res;
if (dec->checked_modules) {
GValue versions = { 0 };
GValue version = { 0 };
GST_LOG_OBJECT (dec, "constructing caps");
res = gst_caps_new_empty ();
g_value_init (&versions, GST_TYPE_LIST);
g_value_init (&version, G_TYPE_INT);
if (dec->valid_rv20) {
g_value_set_int (&version, GST_REAL_VIDEO_DEC_VERSION_2);
gst_value_list_append_value (&versions, &version);
}
if (dec->valid_rv30) {
g_value_set_int (&version, GST_REAL_VIDEO_DEC_VERSION_3);
gst_value_list_append_value (&versions, &version);
}
if (dec->valid_rv40) {
g_value_set_int (&version, GST_REAL_VIDEO_DEC_VERSION_4);
gst_value_list_append_value (&versions, &version);
}
if (gst_value_list_get_size (&versions) > 0) {
res = gst_caps_new_simple ("video/x-pn-realvideo", NULL);
gst_structure_set_value (gst_caps_get_structure (res, 0),
"rmversion", &versions);
} else {
res = gst_caps_new_empty ();
}
g_value_unset (&versions);
g_value_unset (&version);
} else {
GST_LOG_OBJECT (dec, "returning padtemplate caps");
res = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
GST_LOG_OBJECT (dec, "returning caps %" GST_PTR_FORMAT, res);
return res;
}
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 gboolean
gst_real_video_dec_setcaps (GstPad * pad, GstCaps * caps)
{
GstRealVideoDec *dec = GST_REAL_VIDEO_DEC (GST_PAD_PARENT (pad));
GstStructure *s = gst_caps_get_structure (caps, 0);
gint version, res, width, height, format, subformat;
gint framerate_num, framerate_denom;
gchar data[36];
gboolean bres;
const GValue *v;
if (!gst_structure_get_int (s, "rmversion", &version) ||
!gst_structure_get_int (s, "width", (gint *) & width) ||
!gst_structure_get_int (s, "height", (gint *) & height) ||
!gst_structure_get_int (s, "format", &format) ||
!gst_structure_get_int (s, "subformat", &subformat) ||
!gst_structure_get_fraction (s, "framerate", &framerate_num,
&framerate_denom))
goto missing_keys;
GST_LOG_OBJECT (dec, "Setting version to %d", version);
close_library (dec, &dec->lib);
if (!open_library (dec, version, &dec->lib))
goto open_failed;
/* Initialize REAL driver. */
GST_WRITE_UINT16_LE (data + 0, 11);
GST_WRITE_UINT16_LE (data + 2, width);
GST_WRITE_UINT16_LE (data + 4, height);
GST_WRITE_UINT16_LE (data + 6, 0);
GST_WRITE_UINT32_LE (data + 8, 0);
GST_WRITE_UINT32_LE (data + 12, subformat);
GST_WRITE_UINT32_LE (data + 16, 1);
GST_WRITE_UINT32_LE (data + 20, format);
if ((res = dec->lib.Init (&data, &dec->lib.context)))
goto could_not_initialize;
if ((v = gst_structure_get_value (s, "codec_data"))) {
GstBuffer *buf;
guint32 *msgdata;
guint i;
guint8 *bufdata;
guint bufsize;
struct
{
guint32 type;
guint32 msg;
gpointer data;
guint32 extra[6];
} msg;
buf = g_value_peek_pointer (v);
bufdata = GST_BUFFER_DATA (buf);
bufsize = GST_BUFFER_SIZE (buf);
/* skip format and subformat */
bufdata += 8;
bufsize -= 8;
GST_LOG_OBJECT (dec, "Creating custom message of length %d", bufsize);
msgdata = g_new0 (guint32, bufsize + 2);
if (!msgdata)
goto could_not_allocate;
msg.type = 0x24;
msg.msg = 1 + ((subformat >> 16) & 7);
msg.data = msgdata;
for (i = 0; i < 6; i++)
msg.extra[i] = 0;
msgdata[0] = width;
msgdata[1] = height;
for (i = 0; i < bufsize; i++)
msgdata[i + 2] = 4 * (guint32) bufdata[i];
res = dec->lib.Message (&msg, dec->lib.context);
g_free (msgdata);
if (res)
goto could_not_send_message;
}
