gstreamer/sys/vdpau/h264/gstvdph264dec.c

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2010-06-10 10:13:50 +00:00
/* GStreamer
*
* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
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*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/codecparsers/gsth264parser.h>
#include <gst/codecparsers/gsth264meta.h>
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#include <string.h>
#include "gstvdph264dec.h"
GST_DEBUG_CATEGORY_STATIC (gst_vdp_h264_dec_debug);
#define GST_CAT_DEFAULT gst_vdp_h264_dec_debug
static GstStaticPadTemplate sink_template =
GST_STATIC_PAD_TEMPLATE (GST_VIDEO_DECODER_SINK_NAME,
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GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-h264,stream-format=byte-stream,alignment=au")
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);
#define DEBUG_INIT \
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GST_DEBUG_CATEGORY_INIT (gst_vdp_h264_dec_debug, "vdpauh264dec", 0, \
"VDPAU h264 decoder");
#define gst_vdp_h264_dec_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstVdpH264Dec, gst_vdp_h264_dec, GST_TYPE_VDP_DECODER,
DEBUG_INIT);
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static GstFlowReturn
gst_vdp_h264_dec_output (GstH264DPB * dpb, GstH264Frame * h264_frame,
gpointer user_data)
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{
GstVideoDecoder *video_decoder = (GstVideoDecoder *) user_data;
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GST_DEBUG ("poc: %d", h264_frame->poc);
return gst_video_decoder_finish_frame (video_decoder, h264_frame->frame);
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}
static guint
gst_vdp_h264_dec_calculate_poc (GstVdpH264Dec * h264_dec,
GstH264SliceHdr * slice)
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{
GstH264SPS *seq;
guint poc = 0;
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seq = slice->pps->sequence;
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if (seq->pic_order_cnt_type == 0) {
guint32 max_poc_cnt_lsb = 1 << (seq->log2_max_pic_order_cnt_lsb_minus4 + 4);
if ((slice->pic_order_cnt_lsb < h264_dec->prev_poc_lsb) &&
((h264_dec->prev_poc_lsb - slice->pic_order_cnt_lsb) >=
(max_poc_cnt_lsb / 2)))
h264_dec->poc_msb = h264_dec->poc_msb + max_poc_cnt_lsb;
else if ((slice->pic_order_cnt_lsb > h264_dec->prev_poc_lsb) &&
((slice->pic_order_cnt_lsb - h264_dec->prev_poc_lsb) >
(max_poc_cnt_lsb / 2)))
h264_dec->poc_msb = h264_dec->poc_msb - max_poc_cnt_lsb;
poc = h264_dec->poc_msb + slice->pic_order_cnt_lsb;
h264_dec->prev_poc_lsb = slice->pic_order_cnt_lsb;
}
return poc;
}
static void
gst_vdp_h264_dec_init_frame_info (GstVdpH264Dec * h264_dec,
GstH264Frame * h264_frame, GstH264SliceHdr * slice)
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{
h264_frame->poc = gst_vdp_h264_dec_calculate_poc (h264_dec, slice);
h264_frame->output_needed = TRUE;
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h264_frame->is_long_term = FALSE;
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h264_frame->frame_idx = slice->frame_num;
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/* is reference */
if (slice->nalu_ref_idc == 0)
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h264_frame->is_reference = FALSE;
else if (slice->slice_type == GST_H264_NAL_SLICE_IDR) {
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h264_frame->is_reference = TRUE;
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if (slice->dec_ref_pic_marking.long_term_reference_flag) {
h264_frame->is_long_term = TRUE;
h264_frame->frame_idx = 0;
}
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} else {
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h264_frame->is_reference = TRUE;
if (slice->dec_ref_pic_marking.adaptive_ref_pic_marking_mode_flag) {
GstH264RefPicMarking *marking;
guint i;
marking = slice->dec_ref_pic_marking.ref_pic_marking;
for (i = 0; i < slice->dec_ref_pic_marking.n_ref_pic_marking; i++) {
if (marking[i].memory_management_control_operation == 6) {
h264_frame->is_long_term = TRUE;
h264_frame->frame_idx = marking[i].long_term_frame_idx;
break;
}
}
}
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}
}
static GstFlowReturn
gst_vdp_h264_dec_idr (GstVdpH264Dec * h264_dec, GstVideoCodecFrame * frame,
GstH264SliceHdr * slice)
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{
GstH264SPS *seq;
GST_DEBUG_OBJECT (h264_dec, "Handling IDR slice");
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h264_dec->poc_msb = 0;
h264_dec->prev_poc_lsb = 0;
if (slice->dec_ref_pic_marking.no_output_of_prior_pics_flag)
gst_h264_dpb_flush (h264_dec->dpb, FALSE);
else
gst_h264_dpb_flush (h264_dec->dpb, TRUE);
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if (slice->dec_ref_pic_marking.long_term_reference_flag)
g_object_set (h264_dec->dpb, "max-longterm-frame-idx", 0, NULL);
else
g_object_set (h264_dec->dpb, "max-longterm-frame-idx", -1, NULL);
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seq = slice->pps->sequence;
if (seq->id != h264_dec->current_sps) {
GstVideoCodecState *state;
VdpDecoderProfile profile;
GstFlowReturn ret;
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GST_DEBUG_OBJECT (h264_dec, "Sequence changed !");
state =
gst_video_decoder_set_output_state (GST_VIDEO_DECODER (h264_dec),
GST_VIDEO_FORMAT_YV12, seq->width, seq->height, h264_dec->input_state);
/* calculate framerate if we haven't got one */
if (state->info.fps_n == 0) {
state->info.fps_n = seq->fps_num;
state->info.fps_d = seq->fps_den;
}
if (state->info.par_n == 0 && seq->vui_parameters_present_flag) {
state->info.par_n = seq->vui_parameters.par_n;
state->info.par_d = seq->vui_parameters.par_d;
}
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (h264_dec)))
goto nego_fail;
switch (seq->profile_idc) {
case 66:
profile = VDP_DECODER_PROFILE_H264_BASELINE;
break;
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case 77:
profile = VDP_DECODER_PROFILE_H264_MAIN;
break;
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case 100:
profile = VDP_DECODER_PROFILE_H264_HIGH;
break;
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default:
goto profile_not_suported;
}
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ret = gst_vdp_decoder_init_decoder (GST_VDP_DECODER (h264_dec), profile,
seq->num_ref_frames, h264_dec->input_state);
if (ret != GST_FLOW_OK)
return ret;
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g_object_set (h264_dec->dpb, "num-ref-frames", seq->num_ref_frames, NULL);
h264_dec->current_sps = seq->id;
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}
return GST_FLOW_OK;
profile_not_suported:
{
GST_ELEMENT_ERROR (h264_dec, STREAM, WRONG_TYPE,
("vdpauh264dec doesn't support this streams profile"),
("profile_idc: %d", seq->profile_idc));
return GST_FLOW_ERROR;
}
nego_fail:
{
GST_ERROR_OBJECT (h264_dec, "Negotiation failed");
return GST_FLOW_NOT_NEGOTIATED;
}
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}
static void
gst_vdp_h264_dec_fill_info (VdpPictureInfoH264 * info, GstVdpH264Dec * h264_dec,
GstH264Frame * h264_frame, GstH264SliceHdr * slice)
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{
GstH264PPS *pic;
GstH264SPS *seq;
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pic = slice->pps;
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seq = pic->sequence;
GST_DEBUG_OBJECT (h264_dec, "Filling info");
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/* FIXME: we only handle frames for now */
info->field_order_cnt[0] = h264_frame->poc;
info->field_order_cnt[1] = h264_frame->poc;
info->is_reference = h264_frame->is_reference;
info->frame_num = slice->frame_num;
info->field_pic_flag = slice->field_pic_flag;
info->bottom_field_flag = slice->bottom_field_flag;
info->num_ref_idx_l0_active_minus1 = slice->num_ref_idx_l0_active_minus1;
info->num_ref_idx_l1_active_minus1 = slice->num_ref_idx_l1_active_minus1;
info->num_ref_frames = seq->num_ref_frames;
info->mb_adaptive_frame_field_flag = seq->mb_adaptive_frame_field_flag;
info->frame_mbs_only_flag = seq->frame_mbs_only_flag;
info->log2_max_frame_num_minus4 = seq->log2_max_frame_num_minus4;
info->pic_order_cnt_type = seq->pic_order_cnt_type;
info->log2_max_pic_order_cnt_lsb_minus4 =
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seq->log2_max_pic_order_cnt_lsb_minus4;
info->delta_pic_order_always_zero_flag =
seq->delta_pic_order_always_zero_flag;
info->direct_8x8_inference_flag = seq->direct_8x8_inference_flag;
info->constrained_intra_pred_flag = pic->constrained_intra_pred_flag;
info->weighted_pred_flag = pic->weighted_pred_flag;
info->weighted_bipred_idc = pic->weighted_bipred_idc;
info->transform_8x8_mode_flag = pic->transform_8x8_mode_flag;
info->chroma_qp_index_offset = pic->chroma_qp_index_offset;
info->second_chroma_qp_index_offset = pic->second_chroma_qp_index_offset;
info->pic_init_qp_minus26 = pic->pic_init_qp_minus26;
info->entropy_coding_mode_flag = pic->entropy_coding_mode_flag;
info->pic_order_present_flag = pic->pic_order_present_flag;
info->deblocking_filter_control_present_flag =
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pic->deblocking_filter_control_present_flag;
info->redundant_pic_cnt_present_flag = pic->redundant_pic_cnt_present_flag;
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memcpy (&info->scaling_lists_4x4, &pic->scaling_lists_4x4, 96);
memcpy (&info->scaling_lists_8x8, &pic->scaling_lists_8x8, 128);
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gst_h264_dpb_fill_reference_frames (h264_dec->dpb, info->referenceFrames);
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}
static VdpBitstreamBuffer *
gst_vdp_h264_dec_create_bitstream_buffers (GstVdpH264Dec * h264_dec,
GstH264Meta * meta, GstMapInfo * info)
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{
VdpBitstreamBuffer *bufs;
guint i;
gsize offset = 0;
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bufs = g_new (VdpBitstreamBuffer, meta->num_slices);
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for (i = 0; i < meta->num_slices; i++) {
bufs[i].bitstream = info->data + offset;
if (i == meta->num_slices)
offset = info->size;
else
offset = meta->slice_offsets[i + 1];
bufs[i].bitstream_bytes = offset - meta->slice_offsets[i];
bufs[i].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
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}
return bufs;
}
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static GstFlowReturn
gst_vdp_h264_dec_handle_dpb (GstVdpH264Dec * h264_dec,
GstH264Frame * h264_frame, GstH264SliceHdr * slice)
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{
if (slice->nalu_ref_idc != 0 && slice->slice_type != GST_H264_NAL_SLICE_IDR) {
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if (slice->dec_ref_pic_marking.adaptive_ref_pic_marking_mode_flag) {
GstH264RefPicMarking *marking;
guint i;
marking = slice->dec_ref_pic_marking.ref_pic_marking;
for (i = 0; i < slice->dec_ref_pic_marking.n_ref_pic_marking; i++) {
switch (marking[i].memory_management_control_operation) {
case 1:
{
guint16 pic_num;
pic_num = slice->frame_num -
(marking[i].difference_of_pic_nums_minus1 + 1);
gst_h264_dpb_mark_short_term_unused (h264_dec->dpb, pic_num);
break;
}
case 2:
{
gst_h264_dpb_mark_long_term_unused (h264_dec->dpb,
marking[i].long_term_pic_num);
break;
}
case 3:
{
guint16 pic_num;
pic_num = slice->frame_num -
(marking[i].difference_of_pic_nums_minus1 + 1);
gst_h264_dpb_mark_long_term (h264_dec->dpb, pic_num,
marking[i].long_term_frame_idx);
break;
}
case 4:
{
g_object_set (h264_dec->dpb, "max-longterm-frame-idx",
marking[i].max_long_term_frame_idx_plus1 - 1, NULL);
break;
}
case 5:
{
gst_h264_dpb_mark_all_unused (h264_dec->dpb);
g_object_set (h264_dec->dpb, "max-longterm-frame-idx", -1, NULL);
break;
}
default:
break;
}
}
} else
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gst_h264_dpb_mark_sliding (h264_dec->dpb);
}
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return gst_h264_dpb_add (h264_dec->dpb, h264_frame);
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}
static void
gst_h264_frame_free (GstH264Frame * frame)
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{
g_slice_free (GstH264Frame, frame);
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}
static GstFlowReturn
gst_vdp_h264_dec_handle_frame (GstVideoDecoder * video_decoder,
GstVideoCodecFrame * frame)
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{
GstVdpH264Dec *h264_dec = GST_VDP_H264_DEC (video_decoder);
GstH264Meta *h264_meta;
GstH264Frame *h264_frame;
GList *tmp;
GstFlowReturn ret;
VdpPictureInfoH264 info;
VdpBitstreamBuffer *bufs;
GstH264SliceHdr *first_slice;
guint i;
GstMapInfo map;
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GST_DEBUG ("handle_frame");
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h264_meta = gst_buffer_get_h264_meta (frame->input_buffer);
if (G_UNLIKELY (h264_meta == NULL))
goto no_h264_meta;
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if (G_UNLIKELY (h264_meta->num_slices == 0))
goto no_slices;
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/* Handle PPS/SPS/SEI if present */
if (h264_meta->sps) {
for (tmp = h264_meta->sps; tmp; tmp = tmp->next) {
GstH264SPS *sps = (GstH264SPS *) tmp->data;
GST_LOG_OBJECT (h264_dec, "Storing SPS %d", sps->id);
h264_dec->sps[sps->id] = g_slice_dup (GstH264SPS, sps);
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}
}
if (h264_meta->pps) {
for (tmp = h264_meta->pps; tmp; tmp = tmp->next) {
GstH264PPS *pps = (GstH264PPS *) tmp->data;
GST_LOG_OBJECT (h264_dec, "Storing PPS %d", pps->id);
h264_dec->pps[pps->id] = g_slice_dup (GstH264PPS, pps);
/* Adjust pps pointer */
h264_dec->pps[pps->id]->sequence = h264_dec->sps[pps->sps_id];
}
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}
first_slice = &h264_meta->slices[0];
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if (!h264_dec->got_idr && first_slice->slice_type != GST_H264_NAL_SLICE_IDR)
goto no_idr;
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/* Handle slices */
for (i = 0; i < h264_meta->num_slices; i++) {
GstH264SliceHdr *slice = &h264_meta->slices[i];
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GST_LOG_OBJECT (h264_dec, "Handling slice #%d", i);
slice->pps = h264_dec->pps[slice->pps_id];
}
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if (first_slice->slice_type == GST_H264_NAL_SLICE_IDR) {
ret = gst_vdp_h264_dec_idr (h264_dec, frame, first_slice);
if (ret == GST_FLOW_OK)
h264_dec->got_idr = TRUE;
else
goto skip_frame;
}
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h264_frame = g_slice_new0 (GstH264Frame);
gst_video_codec_frame_set_user_data (frame, h264_frame,
(GDestroyNotify) gst_h264_frame_free);
gst_vdp_h264_dec_init_frame_info (h264_dec, h264_frame, first_slice);
h264_frame->frame = frame;
gst_vdp_h264_dec_fill_info (&info, h264_dec, h264_frame, first_slice);
info.slice_count = h264_meta->num_slices;
if (!gst_buffer_map (frame->input_buffer, &map, GST_MAP_READ))
goto map_fail;
bufs = gst_vdp_h264_dec_create_bitstream_buffers (h264_dec, h264_meta, &map);
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ret = gst_vdp_decoder_render (GST_VDP_DECODER (h264_dec),
(VdpPictureInfo *) & info, h264_meta->num_slices, bufs, frame);
g_free (bufs);
gst_buffer_unmap (frame->input_buffer, &map);
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if (ret != GST_FLOW_OK)
goto render_fail;
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/* DPB handling */
return gst_vdp_h264_dec_handle_dpb (h264_dec, h264_frame, first_slice);
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/* EARLY exit */
no_idr:
{
GST_DEBUG_OBJECT (video_decoder, "Didn't see a IDR yet, skipping frame");
return gst_video_decoder_finish_frame (video_decoder, frame);
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}
skip_frame:
{
GST_DEBUG_OBJECT (video_decoder, "Skipping frame");
return gst_video_decoder_finish_frame (video_decoder, frame);
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}
/* ERRORS */
no_h264_meta:
{
GST_ERROR_OBJECT (video_decoder, "Input buffer doesn't have GstH264Meta");
return GST_FLOW_ERROR;
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}
no_slices:
{
GST_ERROR_OBJECT (video_decoder, "Input buffer doesn't have any slices");
return GST_FLOW_ERROR;
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}
map_fail:
{
GST_ERROR_OBJECT (video_decoder, "Failed to map input buffer for READ");
return GST_FLOW_ERROR;
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}
render_fail:
{
GST_ERROR_OBJECT (video_decoder, "Failed to render : %s",
gst_flow_get_name (ret));
gst_video_decoder_drop_frame (video_decoder, frame);
return ret;
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}
}
static gboolean
gst_vdp_h264_dec_reset (GstVideoDecoder * video_decoder, gboolean hard)
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{
GstVdpH264Dec *h264_dec = GST_VDP_H264_DEC (video_decoder);
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h264_dec->got_idr = FALSE;
gst_h264_dpb_flush (h264_dec->dpb, FALSE);
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return TRUE;
}
static gboolean
gst_vdp_h264_dec_start (GstVideoDecoder * video_decoder)
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{
GstVdpH264Dec *h264_dec = GST_VDP_H264_DEC (video_decoder);
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h264_dec->got_idr = FALSE;
h264_dec->current_sps = -1;
h264_dec->got_idr = FALSE;
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h264_dec->dpb = g_object_new (GST_TYPE_H264_DPB, NULL);
gst_h264_dpb_set_output_func (h264_dec->dpb, gst_vdp_h264_dec_output,
h264_dec);
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return GST_VIDEO_DECODER_CLASS (parent_class)->start (video_decoder);
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}
static gboolean
gst_vdp_h264_dec_stop (GstVideoDecoder * video_decoder)
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{
GstVdpH264Dec *h264_dec = GST_VDP_H264_DEC (video_decoder);
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g_object_unref (h264_dec->dpb);
return GST_VIDEO_DECODER_CLASS (parent_class)->stop (video_decoder);
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}
static gboolean
gst_vdp_h264_dec_set_format (GstVideoDecoder * video_decoder,
GstVideoCodecState * state)
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{
GstVdpH264Dec *h264_dec = GST_VDP_H264_DEC (video_decoder);
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if (h264_dec->input_state)
gst_video_codec_state_unref (h264_dec->input_state);
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h264_dec->input_state = gst_video_codec_state_ref (state);
GST_FIXME_OBJECT (video_decoder, "Do something when receiving input state ?");
return TRUE;
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}
static void
gst_vdp_h264_dec_init (GstVdpH264Dec * h264_dec)
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{
}
static void
gst_vdp_h264_dec_class_init (GstVdpH264DecClass * klass)
{
GstElementClass *element_class;
GstVideoDecoderClass *video_decoder_class;
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element_class = GST_ELEMENT_CLASS (klass);
video_decoder_class = GST_VIDEO_DECODER_CLASS (klass);
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gst_element_class_set_static_metadata (element_class,
"VDPAU H264 Decoder",
"Decoder",
"Decode h264 stream with vdpau",
"Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_template));
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video_decoder_class->start = gst_vdp_h264_dec_start;
video_decoder_class->stop = gst_vdp_h264_dec_stop;
video_decoder_class->reset = gst_vdp_h264_dec_reset;
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video_decoder_class->set_format = gst_vdp_h264_dec_set_format;
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video_decoder_class->handle_frame = gst_vdp_h264_dec_handle_frame;
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}