2009-03-23 22:09:13 +00:00
|
|
|
/*
|
|
|
|
* 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
|
|
|
|
*/
|
|
|
|
|
2014-02-28 12:40:54 +00:00
|
|
|
#include "mpegutils.h"
|
2015-09-12 14:11:05 +00:00
|
|
|
#include "mpegvideo.h"
|
2015-04-23 13:30:01 +00:00
|
|
|
#include "internal.h"
|
2016-08-06 17:37:47 +00:00
|
|
|
#include "vaapi_decode.h"
|
2009-03-23 22:09:13 +00:00
|
|
|
|
|
|
|
/** Reconstruct bitstream f_code */
|
2016-08-06 15:40:14 +00:00
|
|
|
static inline int mpeg2_get_f_code(const MpegEncContext *s)
|
2009-03-23 22:09:13 +00:00
|
|
|
{
|
2011-12-29 21:23:16 +00:00
|
|
|
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];
|
2009-03-23 22:09:13 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/** Determine frame start: first field for field picture or frame picture */
|
2016-08-06 15:40:14 +00:00
|
|
|
static inline int mpeg2_get_is_frame_start(const MpegEncContext *s)
|
2009-03-23 22:09:13 +00:00
|
|
|
{
|
|
|
|
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)
|
|
|
|
{
|
2016-08-06 15:40:14 +00:00
|
|
|
const MpegEncContext *s = avctx->priv_data;
|
2016-08-06 17:37:47 +00:00
|
|
|
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
|
|
|
|
VAPictureParameterBufferMPEG2 pic_param;
|
|
|
|
VAIQMatrixBufferMPEG2 iq_matrix;
|
|
|
|
int i, err;
|
|
|
|
|
|
|
|
pic->output_surface = ff_vaapi_get_surface_id(s->current_picture_ptr->f);
|
|
|
|
|
|
|
|
pic_param = (VAPictureParameterBufferMPEG2) {
|
|
|
|
.horizontal_size = s->width,
|
|
|
|
.vertical_size = s->height,
|
|
|
|
.forward_reference_picture = VA_INVALID_ID,
|
|
|
|
.backward_reference_picture = VA_INVALID_ID,
|
|
|
|
.picture_coding_type = s->pict_type,
|
|
|
|
.f_code = mpeg2_get_f_code(s),
|
|
|
|
.picture_coding_extension.bits = {
|
|
|
|
.intra_dc_precision = s->intra_dc_precision,
|
|
|
|
.picture_structure = s->picture_structure,
|
|
|
|
.top_field_first = s->top_field_first,
|
|
|
|
.frame_pred_frame_dct = s->frame_pred_frame_dct,
|
|
|
|
.concealment_motion_vectors = s->concealment_motion_vectors,
|
|
|
|
.q_scale_type = s->q_scale_type,
|
|
|
|
.intra_vlc_format = s->intra_vlc_format,
|
|
|
|
.alternate_scan = s->alternate_scan,
|
|
|
|
.repeat_first_field = s->repeat_first_field,
|
|
|
|
.progressive_frame = s->progressive_frame,
|
|
|
|
.is_first_field = mpeg2_get_is_frame_start(s),
|
|
|
|
},
|
|
|
|
};
|
2009-03-23 22:09:13 +00:00
|
|
|
|
|
|
|
switch (s->pict_type) {
|
2011-04-27 23:40:44 +00:00
|
|
|
case AV_PICTURE_TYPE_B:
|
2016-08-06 17:37:47 +00:00
|
|
|
pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
|
2009-03-23 22:09:13 +00:00
|
|
|
// fall-through
|
2011-04-27 23:40:44 +00:00
|
|
|
case AV_PICTURE_TYPE_P:
|
2016-08-06 17:37:47 +00:00
|
|
|
pic_param.forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f);
|
2009-03-23 22:09:13 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2016-08-06 17:37:47 +00:00
|
|
|
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
|
|
|
|
VAPictureParameterBufferType,
|
|
|
|
&pic_param, sizeof(pic_param));
|
|
|
|
if (err < 0)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
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;
|
2009-03-23 22:09:13 +00:00
|
|
|
|
|
|
|
for (i = 0; i < 64; i++) {
|
2014-07-01 12:38:57 +00:00
|
|
|
int n = s->idsp.idct_permutation[ff_zigzag_direct[i]];
|
2016-08-06 17:37:47 +00:00
|
|
|
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];
|
2009-03-23 22:09:13 +00:00
|
|
|
}
|
2016-08-06 17:37:47 +00:00
|
|
|
|
|
|
|
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
|
|
|
|
VAIQMatrixBufferType,
|
|
|
|
&iq_matrix, sizeof(iq_matrix));
|
|
|
|
if (err < 0)
|
|
|
|
goto fail;
|
|
|
|
|
2009-03-23 22:09:13 +00:00
|
|
|
return 0;
|
2016-08-06 17:37:47 +00:00
|
|
|
|
|
|
|
fail:
|
|
|
|
ff_vaapi_decode_cancel(avctx, pic);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int vaapi_mpeg2_end_frame(AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
MpegEncContext *s = avctx->priv_data;
|
|
|
|
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = ff_vaapi_decode_issue(avctx, pic);
|
|
|
|
if (ret < 0)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
|
|
|
|
|
|
|
|
fail:
|
|
|
|
return ret;
|
2009-03-23 22:09:13 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int vaapi_mpeg2_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
|
|
|
|
{
|
2016-08-06 15:40:14 +00:00
|
|
|
const MpegEncContext *s = avctx->priv_data;
|
2016-08-06 17:37:47 +00:00
|
|
|
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
|
|
|
|
VASliceParameterBufferMPEG2 slice_param;
|
2009-03-23 22:09:13 +00:00
|
|
|
GetBitContext gb;
|
2011-07-14 23:06:16 +00:00
|
|
|
uint32_t quantiser_scale_code, intra_slice_flag, macroblock_offset;
|
2016-08-06 17:37:47 +00:00
|
|
|
int err;
|
2009-03-23 22:09:13 +00:00
|
|
|
|
|
|
|
/* Determine macroblock_offset */
|
|
|
|
init_get_bits(&gb, buffer, 8 * size);
|
2011-07-14 23:06:16 +00:00
|
|
|
if (get_bits_long(&gb, 32) >> 8 != 1) /* start code */
|
|
|
|
return AVERROR_INVALIDDATA;
|
2009-03-23 22:09:13 +00:00
|
|
|
quantiser_scale_code = get_bits(&gb, 5);
|
|
|
|
intra_slice_flag = get_bits1(&gb);
|
|
|
|
if (intra_slice_flag) {
|
|
|
|
skip_bits(&gb, 8);
|
2013-10-30 17:28:00 +00:00
|
|
|
if (skip_1stop_8data_bits(&gb) < 0)
|
|
|
|
return AVERROR_INVALIDDATA;
|
2009-03-23 22:09:13 +00:00
|
|
|
}
|
|
|
|
macroblock_offset = get_bits_count(&gb);
|
|
|
|
|
2016-08-06 17:37:47 +00:00
|
|
|
slice_param = (VASliceParameterBufferMPEG2) {
|
|
|
|
.slice_data_size = size,
|
|
|
|
.slice_data_offset = 0,
|
|
|
|
.slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
|
|
|
|
.macroblock_offset = macroblock_offset,
|
|
|
|
.slice_horizontal_position = s->mb_x,
|
|
|
|
.slice_vertical_position = s->mb_y >> (s->picture_structure != PICT_FRAME),
|
|
|
|
.quantiser_scale_code = quantiser_scale_code,
|
|
|
|
.intra_slice_flag = intra_slice_flag,
|
|
|
|
};
|
|
|
|
|
|
|
|
err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
|
|
|
|
&slice_param, sizeof(slice_param),
|
|
|
|
buffer, size);
|
|
|
|
if (err < 0) {
|
|
|
|
ff_vaapi_decode_cancel(avctx, pic);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2009-03-23 22:09:13 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-27 02:56:14 +00:00
|
|
|
AVHWAccel ff_mpeg2_vaapi_hwaccel = {
|
2016-08-06 17:37:47 +00:00
|
|
|
.name = "mpeg2_vaapi",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
|
|
.id = AV_CODEC_ID_MPEG2VIDEO,
|
|
|
|
.pix_fmt = AV_PIX_FMT_VAAPI,
|
|
|
|
.start_frame = &vaapi_mpeg2_start_frame,
|
|
|
|
.end_frame = &vaapi_mpeg2_end_frame,
|
|
|
|
.decode_slice = &vaapi_mpeg2_decode_slice,
|
|
|
|
.frame_priv_data_size = sizeof(VAAPIDecodePicture),
|
|
|
|
.init = &ff_vaapi_decode_init,
|
|
|
|
.uninit = &ff_vaapi_decode_uninit,
|
|
|
|
.priv_data_size = sizeof(VAAPIDecodeContext),
|
2009-03-23 22:09:13 +00:00
|
|
|
};
|