/* * MPEG-4 Part 2 / H.263 decode acceleration through VDPAU * * Copyright (c) 2008 NVIDIA * Copyright (c) 2013 RĂ©mi Denis-Courmont * * 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 <vdpau/vdpau.h> #include "avcodec.h" #include "hwaccel.h" #include "mpeg4video.h" #include "vdpau.h" #include "vdpau_internal.h" static int vdpau_mpeg4_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) { Mpeg4DecContext *ctx = avctx->priv_data; MpegEncContext * const s = &ctx->m; Picture *pic = s->current_picture_ptr; struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private; VdpPictureInfoMPEG4Part2 *info = &pic_ctx->info.mpeg4; VdpVideoSurface ref; int i; /* fill VdpPictureInfoMPEG4Part2 struct */ info->forward_reference = VDP_INVALID_HANDLE; info->backward_reference = VDP_INVALID_HANDLE; info->vop_coding_type = 0; switch (s->pict_type) { case AV_PICTURE_TYPE_B: ref = ff_vdpau_get_surface_id(s->next_picture.f); assert(ref != VDP_INVALID_HANDLE); info->backward_reference = ref; info->vop_coding_type = 2; /* fall-through */ case AV_PICTURE_TYPE_P: ref = ff_vdpau_get_surface_id(s->last_picture.f); assert(ref != VDP_INVALID_HANDLE); info->forward_reference = ref; } info->trd[0] = s->pp_time; info->trb[0] = s->pb_time; info->trd[1] = s->pp_field_time >> 1; info->trb[1] = s->pb_field_time >> 1; info->vop_time_increment_resolution = s->avctx->framerate.num; info->vop_fcode_forward = s->f_code; info->vop_fcode_backward = s->b_code; info->resync_marker_disable = !ctx->resync_marker; info->interlaced = !s->progressive_sequence; info->quant_type = s->mpeg_quant; info->quarter_sample = s->quarter_sample; info->short_video_header = avctx->codec->id == AV_CODEC_ID_H263; info->rounding_control = s->no_rounding; info->alternate_vertical_scan_flag = s->alternate_scan; info->top_field_first = s->top_field_first; for (i = 0; i < 64; ++i) { info->intra_quantizer_matrix[i] = s->intra_matrix[i]; info->non_intra_quantizer_matrix[i] = s->inter_matrix[i]; } ff_vdpau_common_start_frame(pic_ctx, buffer, size); return ff_vdpau_add_buffer(pic_ctx, buffer, size); } static int vdpau_mpeg4_decode_slice(av_unused AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) { return 0; } static int vdpau_mpeg4_init(AVCodecContext *avctx) { VdpDecoderProfile profile; switch (avctx->profile) { case FF_PROFILE_MPEG4_SIMPLE: profile = VDP_DECODER_PROFILE_MPEG4_PART2_SP; break; // As any ASP decoder must be able to decode SP, this // should be a safe fallback if profile is unknown/unspecified. case FF_PROFILE_UNKNOWN: case FF_PROFILE_MPEG4_ADVANCED_SIMPLE: profile = VDP_DECODER_PROFILE_MPEG4_PART2_ASP; break; default: return AVERROR(ENOTSUP); } return ff_vdpau_common_init(avctx, profile, avctx->level); } AVHWAccel ff_mpeg4_vdpau_hwaccel = { .name = "mpeg4_vdpau", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_MPEG4, .pix_fmt = AV_PIX_FMT_VDPAU, .start_frame = vdpau_mpeg4_start_frame, .end_frame = ff_vdpau_mpeg_end_frame, .decode_slice = vdpau_mpeg4_decode_slice, .frame_priv_data_size = sizeof(struct vdpau_picture_context), .init = vdpau_mpeg4_init, .uninit = ff_vdpau_common_uninit, .priv_data_size = sizeof(VDPAUContext), .caps_internal = HWACCEL_CAP_ASYNC_SAFE, };