FFmpeg/libavcodec/vaapi_mpeg2.c
Michael Niedermayer 7a72695c05 Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85'
* commit '36ef5369ee9b336febc2c270f8718cec4476cb85':
  Replace all CODEC_ID_* with AV_CODEC_ID_*
  lavc: add AV prefix to codec ids.

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	doc/examples/muxing.c
	ffmpeg.c
	ffprobe.c
	ffserver.c
	libavcodec/8svx.c
	libavcodec/avcodec.h
	libavcodec/dnxhd_parser.c
	libavcodec/dvdsubdec.c
	libavcodec/error_resilience.c
	libavcodec/h263dec.c
	libavcodec/libvorbisenc.c
	libavcodec/mjpeg_parser.c
	libavcodec/mjpegenc.c
	libavcodec/mpeg12.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/pcm.c
	libavcodec/r210dec.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/version.h
	libavdevice/alsa-audio-dec.c
	libavdevice/bktr.c
	libavdevice/v4l2.c
	libavformat/asfdec.c
	libavformat/asfenc.c
	libavformat/avformat.h
	libavformat/avidec.c
	libavformat/caf.c
	libavformat/electronicarts.c
	libavformat/flacdec.c
	libavformat/flvdec.c
	libavformat/flvenc.c
	libavformat/framecrcenc.c
	libavformat/img2.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/ipmovie.c
	libavformat/isom.c
	libavformat/matroska.c
	libavformat/matroskadec.c
	libavformat/matroskaenc.c
	libavformat/mov.c
	libavformat/movenc.c
	libavformat/mp3dec.c
	libavformat/mpeg.c
	libavformat/mpegts.c
	libavformat/mxf.c
	libavformat/mxfdec.c
	libavformat/mxfenc.c
	libavformat/nsvdec.c
	libavformat/nut.c
	libavformat/oggenc.c
	libavformat/pmpdec.c
	libavformat/rawdec.c
	libavformat/rawenc.c
	libavformat/riff.c
	libavformat/sdp.c
	libavformat/utils.c
	libavformat/vocenc.c
	libavformat/wtv.c
	libavformat/xmv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-07 22:45:46 +02:00

150 lines
6.4 KiB
C

/*
* MPEG-2 HW decode acceleration through VA API
*
* Copyright (C) 2008-2009 Splitted-Desktop Systems
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "vaapi_internal.h"
#include "dsputil.h"
/** Reconstruct bitstream f_code */
static inline int mpeg2_get_f_code(MpegEncContext *s)
{
return (s->mpeg_f_code[0][0] << 12) | (s->mpeg_f_code[0][1] << 8) |
(s->mpeg_f_code[1][0] << 4) | s->mpeg_f_code[1][1];
}
/** Determine frame start: first field for field picture or frame picture */
static inline int mpeg2_get_is_frame_start(MpegEncContext *s)
{
return s->first_field || s->picture_structure == PICT_FRAME;
}
static int vaapi_mpeg2_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
{
struct MpegEncContext * const s = avctx->priv_data;
struct vaapi_context * const vactx = avctx->hwaccel_context;
VAPictureParameterBufferMPEG2 *pic_param;
VAIQMatrixBufferMPEG2 *iq_matrix;
int i;
av_dlog(avctx, "vaapi_mpeg2_start_frame()\n");
vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG2);
/* Fill in VAPictureParameterBufferMPEG2 */
pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG2));
if (!pic_param)
return -1;
pic_param->horizontal_size = s->width;
pic_param->vertical_size = s->height;
pic_param->forward_reference_picture = VA_INVALID_ID;
pic_param->backward_reference_picture = VA_INVALID_ID;
pic_param->picture_coding_type = s->pict_type;
pic_param->f_code = mpeg2_get_f_code(s);
pic_param->picture_coding_extension.value = 0; /* reset all bits */
pic_param->picture_coding_extension.bits.intra_dc_precision = s->intra_dc_precision;
pic_param->picture_coding_extension.bits.picture_structure = s->picture_structure;
pic_param->picture_coding_extension.bits.top_field_first = s->top_field_first;
pic_param->picture_coding_extension.bits.frame_pred_frame_dct = s->frame_pred_frame_dct;
pic_param->picture_coding_extension.bits.concealment_motion_vectors = s->concealment_motion_vectors;
pic_param->picture_coding_extension.bits.q_scale_type = s->q_scale_type;
pic_param->picture_coding_extension.bits.intra_vlc_format = s->intra_vlc_format;
pic_param->picture_coding_extension.bits.alternate_scan = s->alternate_scan;
pic_param->picture_coding_extension.bits.repeat_first_field = s->repeat_first_field;
pic_param->picture_coding_extension.bits.progressive_frame = s->progressive_frame;
pic_param->picture_coding_extension.bits.is_first_field = mpeg2_get_is_frame_start(s);
switch (s->pict_type) {
case AV_PICTURE_TYPE_B:
pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture);
// fall-through
case AV_PICTURE_TYPE_P:
pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture);
break;
}
/* Fill in VAIQMatrixBufferMPEG2 */
iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG2));
if (!iq_matrix)
return -1;
iq_matrix->load_intra_quantiser_matrix = 1;
iq_matrix->load_non_intra_quantiser_matrix = 1;
iq_matrix->load_chroma_intra_quantiser_matrix = 1;
iq_matrix->load_chroma_non_intra_quantiser_matrix = 1;
for (i = 0; i < 64; i++) {
int n = s->dsp.idct_permutation[ff_zigzag_direct[i]];
iq_matrix->intra_quantiser_matrix[i] = s->intra_matrix[n];
iq_matrix->non_intra_quantiser_matrix[i] = s->inter_matrix[n];
iq_matrix->chroma_intra_quantiser_matrix[i] = s->chroma_intra_matrix[n];
iq_matrix->chroma_non_intra_quantiser_matrix[i] = s->chroma_inter_matrix[n];
}
return 0;
}
static int vaapi_mpeg2_end_frame(AVCodecContext *avctx)
{
return ff_vaapi_common_end_frame(avctx->priv_data);
}
static int vaapi_mpeg2_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
MpegEncContext * const s = avctx->priv_data;
VASliceParameterBufferMPEG2 *slice_param;
GetBitContext gb;
uint32_t quantiser_scale_code, intra_slice_flag, macroblock_offset;
av_dlog(avctx, "vaapi_mpeg2_decode_slice(): buffer %p, size %d\n", buffer, size);
/* Determine macroblock_offset */
init_get_bits(&gb, buffer, 8 * size);
if (get_bits_long(&gb, 32) >> 8 != 1) /* start code */
return AVERROR_INVALIDDATA;
quantiser_scale_code = get_bits(&gb, 5);
intra_slice_flag = get_bits1(&gb);
if (intra_slice_flag) {
skip_bits(&gb, 8);
while (get_bits1(&gb) != 0)
skip_bits(&gb, 8);
}
macroblock_offset = get_bits_count(&gb);
/* Fill in VASliceParameterBufferMPEG2 */
slice_param = (VASliceParameterBufferMPEG2 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size);
if (!slice_param)
return -1;
slice_param->macroblock_offset = macroblock_offset;
slice_param->slice_horizontal_position = s->mb_x;
slice_param->slice_vertical_position = s->mb_y >> (s->picture_structure != PICT_FRAME);
slice_param->quantiser_scale_code = quantiser_scale_code;
slice_param->intra_slice_flag = intra_slice_flag;
return 0;
}
AVHWAccel ff_mpeg2_vaapi_hwaccel = {
.name = "mpeg2_vaapi",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MPEG2VIDEO,
.pix_fmt = PIX_FMT_VAAPI_VLD,
.start_frame = vaapi_mpeg2_start_frame,
.end_frame = vaapi_mpeg2_end_frame,
.decode_slice = vaapi_mpeg2_decode_slice,
};