GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/vdpau_mpeg4.c Lines: 0 50 0.0 %
Date: 2020-09-25 23:16:12 Branches: 0 8 0.0 %

Line Branch Exec Source
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/*
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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 RĂ©mi 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 "hwconfig.h"
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#include "mpeg4video.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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    Mpeg4DecContext *ctx = avctx->priv_data;
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    MpegEncContext * const s = &ctx->m;
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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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    VdpPictureInfoMPEG4Part2 *info = &pic_ctx->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.f);
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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.f);
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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->framerate.num;
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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             = !ctx->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(pic_ctx, buffer, size);
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    return ff_vdpau_add_buffer(pic_ctx, 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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static int vdpau_mpeg4_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_MPEG4_SIMPLE:
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        profile = VDP_DECODER_PROFILE_MPEG4_PART2_SP;
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        break;
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    // As any ASP decoder must be able to decode SP, this
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    // should be a safe fallback if profile is unknown/unspecified.
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    case FF_PROFILE_UNKNOWN:
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    case FF_PROFILE_MPEG4_ADVANCED_SIMPLE:
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        profile = VDP_DECODER_PROFILE_MPEG4_PART2_ASP;
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        break;
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    default:
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        return AVERROR(ENOTSUP);
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    }
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    return ff_vdpau_common_init(avctx, profile, avctx->level);
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}
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const 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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    .frame_priv_data_size = sizeof(struct vdpau_picture_context),
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    .init           = vdpau_mpeg4_init,
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    .uninit         = ff_vdpau_common_uninit,
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    .frame_params   = ff_vdpau_common_frame_params,
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    .priv_data_size = sizeof(VDPAUContext),
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    .caps_internal  = HWACCEL_CAP_ASYNC_SAFE,
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};