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https://git.ffmpeg.org/ffmpeg.git
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2c54155407
Most of the changes are just trivial are just trivial replacements of fields from MpegEncContext with equivalent fields in H264Context. Everything in h264* other than h264.c are those trivial changes. The nontrivial parts are: 1) extracting a simplified version of the frame management code from mpegvideo.c. We don't need last/next_picture anymore, since h264 uses its own more complex system already and those were set only to appease the mpegvideo parts. 2) some tables that need to be allocated/freed in appropriate places. 3) hwaccels -- mostly trivial replacements. for dxva, the draw_horiz_band() call is moved from ff_dxva2_common_end_frame() to per-codec end_frame() callbacks, because it's now different for h264 and MpegEncContext-based decoders. 4) svq3 -- it does not use h264 complex reference system, so I just added some very simplistic frame management instead and dropped the use of ff_h264_frame_start(). Because of this I also had to move some initialization code to svq3. Additional fixes for chroma format and bit depth changes by Janne Grunau <janne-libav@jannau.net> Signed-off-by: Anton Khirnov <anton@khirnov.net>
111 lines
4.1 KiB
C
111 lines
4.1 KiB
C
/*
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* MPEG-4 Part 2 / H.263 decode acceleration through VDPAU
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*
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* Copyright (c) 2008 NVIDIA
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* Copyright (c) 2013 Rémi Denis-Courmont
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <vdpau/vdpau.h>
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#include "avcodec.h"
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#include "vdpau.h"
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#include "vdpau_internal.h"
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static int vdpau_mpeg4_start_frame(AVCodecContext *avctx,
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const uint8_t *buffer, uint32_t size)
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{
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MpegEncContext * const s = avctx->priv_data;
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AVVDPAUContext *hwctx = avctx->hwaccel_context;
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VdpPictureInfoMPEG4Part2 *info = &hwctx->info.mpeg4;
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VdpVideoSurface ref;
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int i;
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/* fill VdpPictureInfoMPEG4Part2 struct */
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info->forward_reference = VDP_INVALID_HANDLE;
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info->backward_reference = VDP_INVALID_HANDLE;
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info->vop_coding_type = 0;
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switch (s->pict_type) {
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case AV_PICTURE_TYPE_B:
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ref = ff_vdpau_get_surface_id(&s->next_picture);
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assert(ref != VDP_INVALID_HANDLE);
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info->backward_reference = ref;
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info->vop_coding_type = 2;
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/* fall-through */
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case AV_PICTURE_TYPE_P:
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ref = ff_vdpau_get_surface_id(&s->last_picture);
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assert(ref != VDP_INVALID_HANDLE);
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info->forward_reference = ref;
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}
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info->trd[0] = s->pp_time;
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info->trb[0] = s->pb_time;
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info->trd[1] = s->pp_field_time >> 1;
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info->trb[1] = s->pb_field_time >> 1;
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info->vop_time_increment_resolution = s->avctx->time_base.den;
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info->vop_fcode_forward = s->f_code;
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info->vop_fcode_backward = s->b_code;
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info->resync_marker_disable = !s->resync_marker;
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info->interlaced = !s->progressive_sequence;
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info->quant_type = s->mpeg_quant;
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info->quarter_sample = s->quarter_sample;
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info->short_video_header = avctx->codec->id == AV_CODEC_ID_H263;
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info->rounding_control = s->no_rounding;
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info->alternate_vertical_scan_flag = s->alternate_scan;
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info->top_field_first = s->top_field_first;
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for (i = 0; i < 64; ++i) {
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info->intra_quantizer_matrix[i] = s->intra_matrix[i];
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info->non_intra_quantizer_matrix[i] = s->inter_matrix[i];
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}
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ff_vdpau_common_start_frame(avctx, buffer, size);
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return ff_vdpau_add_buffer(avctx, buffer, size);
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}
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static int vdpau_mpeg4_decode_slice(av_unused AVCodecContext *avctx,
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av_unused const uint8_t *buffer,
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av_unused uint32_t size)
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{
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return 0;
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}
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#if CONFIG_H263_VDPAU_HWACCEL
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AVHWAccel ff_h263_vdpau_hwaccel = {
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.name = "h263_vdpau",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_H263,
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.pix_fmt = AV_PIX_FMT_VDPAU,
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.start_frame = vdpau_mpeg4_start_frame,
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.end_frame = ff_vdpau_mpeg_end_frame,
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.decode_slice = vdpau_mpeg4_decode_slice,
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};
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#endif
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#if CONFIG_MPEG4_VDPAU_HWACCEL
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AVHWAccel ff_mpeg4_vdpau_hwaccel = {
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.name = "mpeg4_vdpau",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_MPEG4,
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.pix_fmt = AV_PIX_FMT_VDPAU,
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.start_frame = vdpau_mpeg4_start_frame,
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.end_frame = ff_vdpau_mpeg_end_frame,
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.decode_slice = vdpau_mpeg4_decode_slice,
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};
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#endif
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