mirror of https://git.ffmpeg.org/ffmpeg.git
117 lines
4.1 KiB
C
117 lines
4.1 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 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_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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AVVDPAUContext *hwctx = avctx->hwaccel_context;
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VdpPictureInfoMPEG1Or2 *info = &hwctx->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);
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assert(ref != VDP_INVALID_HANDLE);
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hwctx->info.mpeg.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);
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hwctx->info.mpeg.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(avctx, 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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AVVDPAUContext *hwctx = avctx->hwaccel_context;
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int val;
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val = ff_vdpau_add_buffer(avctx, buffer, size);
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if (val < 0)
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return val;
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hwctx->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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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_common_end_frame,
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.decode_slice = vdpau_mpeg_decode_slice,
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};
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#endif
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#if CONFIG_MPEG2_VDPAU_HWACCEL
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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_common_end_frame,
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.decode_slice = vdpau_mpeg_decode_slice,
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};
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#endif
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