static GstFlowReturn
gst_vdp_mpeg_dec_handle_sequence (GstVdpMpegDec * mpeg_dec,
GstBuffer * seq, GstBuffer * seq_ext)
{
GstBaseVideoDecoder *base_video_decoder = GST_BASE_VIDEO_DECODER (mpeg_dec);
MPEGSeqHdr hdr;
GstVdpMpegStreamInfo stream_info;
if (!mpeg_util_parse_sequence_hdr (&hdr, seq))
return GST_FLOW_CUSTOM_ERROR;
memcpy (&mpeg_dec->vdp_info.intra_quantizer_matrix,
&hdr.intra_quantizer_matrix, 64);
memcpy (&mpeg_dec->vdp_info.non_intra_quantizer_matrix,
&hdr.non_intra_quantizer_matrix, 64);
stream_info.width = hdr.width;
stream_info.height = hdr.height;
stream_info.fps_n = hdr.fps_n;
stream_info.fps_d = hdr.fps_d;
stream_info.par_n = hdr.par_w;
stream_info.par_d = hdr.par_h;
stream_info.interlaced = FALSE;
stream_info.version = 1;
stream_info.profile = VDP_DECODER_PROFILE_MPEG1;
if (seq_ext) {
MPEGSeqExtHdr ext;
if (!mpeg_util_parse_sequence_extension (&ext, seq_ext))
return GST_FLOW_CUSTOM_ERROR;
stream_info.fps_n *= (ext.fps_n_ext + 1);
stream_info.fps_d *= (ext.fps_d_ext + 1);
stream_info.width += (ext.horiz_size_ext << 12);
stream_info.height += (ext.vert_size_ext << 12);
stream_info.interlaced = !ext.progressive;
stream_info.version = 2;
stream_info.profile = gst_vdp_mpeg_dec_get_profile (&ext);
}
if (memcmp (&mpeg_dec->stream_info, &stream_info,
sizeof (GstVdpMpegStreamInfo)) != 0) {
GstVideoState state;
GstFlowReturn ret;
state = gst_base_video_decoder_get_state (base_video_decoder);
state.width = stream_info.width;
state.height = stream_info.height;
state.fps_n = stream_info.fps_n;
state.fps_d = stream_info.fps_d;
state.par_n = stream_info.par_n;
state.par_d = stream_info.par_d;
state.interlaced = stream_info.interlaced;
gst_base_video_decoder_set_state (base_video_decoder, state);
ret = gst_vdp_decoder_init_decoder (GST_VDP_DECODER (mpeg_dec),
stream_info.profile, 2);
if (ret != GST_FLOW_OK)
return ret;
memcpy (&mpeg_dec->stream_info, &stream_info,
sizeof (GstVdpMpegStreamInfo));
}
mpeg_dec->state = GST_VDP_MPEG_DEC_STATE_NEED_DATA;
return GST_FLOW_OK;
}
static gboolean
gst_vdp_mpeg_dec_set_caps (GstPad * pad, GstCaps * caps)
{
GstVdpMpegDec *mpeg_dec = GST_VDP_MPEG_DEC (gst_pad_get_parent (pad));
GstStructure *structure;
gint width, height;
gint fps_n, fps_d;
gint par_n, par_d;
gboolean interlaced = FALSE;
GstCaps *src_caps;
gboolean res;
const GValue *value;
structure = gst_caps_get_structure (caps, 0);
/* create src_pad caps */
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d);
gst_structure_get_fraction (structure, "pixel-aspect-ratio", &par_n, &par_d);
gst_structure_get_boolean (structure, "interlaced", &interlaced);
src_caps = gst_caps_new_simple ("video/x-vdpau-video",
"chroma-type", G_TYPE_INT, VDP_CHROMA_TYPE_420,
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
"framerate", GST_TYPE_FRACTION, fps_n, fps_d,
"pixel-aspect-ratio", GST_TYPE_FRACTION, par_n, par_d,
"interlaced", G_TYPE_BOOLEAN, interlaced, NULL);
GST_DEBUG_OBJECT (mpeg_dec, "Setting source caps to %" GST_PTR_FORMAT,
src_caps);
res = gst_pad_set_caps (mpeg_dec->src, src_caps);
gst_caps_unref (src_caps);
if (!res)
goto done;
mpeg_dec->width = width;
mpeg_dec->height = height;
mpeg_dec->fps_n = fps_n;
mpeg_dec->fps_d = fps_d;
mpeg_dec->interlaced = interlaced;
/* parse caps to setup decoder */
gst_structure_get_int (structure, "mpegversion", &mpeg_dec->version);
/* Default to MPEG1 until we find otherwise */
mpeg_dec->profile = VDP_DECODER_PROFILE_MPEG1;
value = gst_structure_get_value (structure, "codec_data");
if (value) {
GstBuffer *codec_data, *buf;
GstVdpMpegPacketizer packetizer;
codec_data = gst_value_get_buffer (value);
gst_vdp_mpeg_packetizer_init (&packetizer, codec_data);
if ((buf = gst_vdp_mpeg_packetizer_get_next_packet (&packetizer))) {
MPEGSeqHdr hdr;
guint32 bitrate;
mpeg_util_parse_sequence_hdr (&hdr, buf);
memcpy (&mpeg_dec->vdp_info.intra_quantizer_matrix,
&hdr.intra_quantizer_matrix, 64);
memcpy (&mpeg_dec->vdp_info.non_intra_quantizer_matrix,
&hdr.non_intra_quantizer_matrix, 64);
bitrate = hdr.bitrate;
gst_buffer_unref (buf);
if ((buf = gst_vdp_mpeg_packetizer_get_next_packet (&packetizer))) {
MPEGSeqExtHdr ext;
mpeg_util_parse_sequence_extension (&ext, buf);
if (mpeg_dec->version != 1) {
switch (ext.profile) {
case 5:
mpeg_dec->profile = VDP_DECODER_PROFILE_MPEG2_SIMPLE;
break;
default:
mpeg_dec->profile = VDP_DECODER_PROFILE_MPEG2_MAIN;
break;
}
}
bitrate += (ext.bitrate_ext << 18);
gst_buffer_unref (buf);
}
mpeg_dec->duration =
gst_util_uint64_scale (1, GST_SECOND * mpeg_dec->fps_d,
mpeg_dec->fps_n);
mpeg_dec->byterate = bitrate * 50;
GST_DEBUG ("byterate: %" G_GINT64_FORMAT, mpeg_dec->byterate);
}
}
res = TRUE;
done:
gst_object_unref (mpeg_dec);
return res;
}
