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https://github.com/FFmpeg/FFmpeg.git
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e0cd598bc4
Certain hardware decoding APIs are not guaranteed to be thread-safe, so
having the user access decoded hardware surfaces while the decoder is
running in another thread can cause failures (this is mainly known to
happen with DXVA2).
For such hwaccels, only allow the decoding thread to run while the user
is inside a lavc decode call (avcodec_send_packet/receive_frame).
Merges Libav commit d4a91e65
.
Signed-off-by: wm4 <nfxjfg@googlemail.com>
Tested-by: Michael Niedermayer <michael@niedermayer.cc>
156 lines
5.5 KiB
C
156 lines
5.5 KiB
C
/*
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* MPEG-1/2 HW 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 FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "hwaccel.h"
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#include "mpegvideo.h"
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#include "vdpau.h"
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#include "vdpau_internal.h"
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static int vdpau_mpeg_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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Picture *pic = s->current_picture_ptr;
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struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
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VdpPictureInfoMPEG1Or2 *info = &pic_ctx->info.mpeg;
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VdpVideoSurface ref;
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int i;
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/* fill VdpPictureInfoMPEG1Or2 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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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.f);
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assert(ref != VDP_INVALID_HANDLE);
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info->backward_reference = ref;
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/* fall through to forward prediction */
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case AV_PICTURE_TYPE_P:
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ref = ff_vdpau_get_surface_id(s->last_picture.f);
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info->forward_reference = ref;
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}
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info->slice_count = 0;
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info->picture_structure = s->picture_structure;
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info->picture_coding_type = s->pict_type;
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info->intra_dc_precision = s->intra_dc_precision;
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info->frame_pred_frame_dct = s->frame_pred_frame_dct;
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info->concealment_motion_vectors = s->concealment_motion_vectors;
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info->intra_vlc_format = s->intra_vlc_format;
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info->alternate_scan = s->alternate_scan;
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info->q_scale_type = s->q_scale_type;
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info->top_field_first = s->top_field_first;
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// Both for MPEG-1 only, zero for MPEG-2:
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info->full_pel_forward_vector = s->full_pel[0];
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info->full_pel_backward_vector = s->full_pel[1];
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// For MPEG-1 fill both horizontal & vertical:
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info->f_code[0][0] = s->mpeg_f_code[0][0];
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info->f_code[0][1] = s->mpeg_f_code[0][1];
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info->f_code[1][0] = s->mpeg_f_code[1][0];
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info->f_code[1][1] = s->mpeg_f_code[1][1];
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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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return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
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}
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static int vdpau_mpeg_decode_slice(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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Picture *pic = s->current_picture_ptr;
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struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
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int val;
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val = ff_vdpau_add_buffer(pic_ctx, buffer, size);
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if (val < 0)
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return val;
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pic_ctx->info.mpeg.slice_count++;
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return 0;
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}
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#if CONFIG_MPEG1_VDPAU_HWACCEL
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static int vdpau_mpeg1_init(AVCodecContext *avctx)
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{
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return ff_vdpau_common_init(avctx, VDP_DECODER_PROFILE_MPEG1,
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VDP_DECODER_LEVEL_MPEG1_NA);
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}
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AVHWAccel ff_mpeg1_vdpau_hwaccel = {
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.name = "mpeg1_vdpau",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_MPEG1VIDEO,
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.pix_fmt = AV_PIX_FMT_VDPAU,
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.start_frame = vdpau_mpeg_start_frame,
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.end_frame = ff_vdpau_mpeg_end_frame,
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.decode_slice = vdpau_mpeg_decode_slice,
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.frame_priv_data_size = sizeof(struct vdpau_picture_context),
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.init = vdpau_mpeg1_init,
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.uninit = ff_vdpau_common_uninit,
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.priv_data_size = sizeof(VDPAUContext),
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.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
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};
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#endif
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#if CONFIG_MPEG2_VDPAU_HWACCEL
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static int vdpau_mpeg2_init(AVCodecContext *avctx)
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{
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VdpDecoderProfile profile;
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switch (avctx->profile) {
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case FF_PROFILE_MPEG2_MAIN:
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profile = VDP_DECODER_PROFILE_MPEG2_MAIN;
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break;
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case FF_PROFILE_MPEG2_SIMPLE:
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profile = VDP_DECODER_PROFILE_MPEG2_SIMPLE;
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break;
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default:
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return AVERROR(EINVAL);
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}
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return ff_vdpau_common_init(avctx, profile, VDP_DECODER_LEVEL_MPEG2_HL);
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}
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AVHWAccel ff_mpeg2_vdpau_hwaccel = {
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.name = "mpeg2_vdpau",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_MPEG2VIDEO,
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.pix_fmt = AV_PIX_FMT_VDPAU,
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.start_frame = vdpau_mpeg_start_frame,
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.end_frame = ff_vdpau_mpeg_end_frame,
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.decode_slice = vdpau_mpeg_decode_slice,
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.frame_priv_data_size = sizeof(struct vdpau_picture_context),
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.init = vdpau_mpeg2_init,
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.uninit = ff_vdpau_common_uninit,
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.priv_data_size = sizeof(VDPAUContext),
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.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
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};
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#endif
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