GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/vaapi_mpeg4.c Lines: 0 87 0.0 %
Date: 2020-10-23 17:01:47 Branches: 0 39 0.0 %

Line Branch Exec Source
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/*
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 * MPEG-4 / H.263 HW decode acceleration through VA API
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 *
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 * Copyright (C) 2008-2009 Splitted-Desktop Systems
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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
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "h263.h"
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#include "hwconfig.h"
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#include "internal.h"
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#include "mpeg4video.h"
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#include "mpegvideo.h"
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#include "vaapi_decode.h"
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/** Reconstruct bitstream intra_dc_vlc_thr */
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static int mpeg4_get_intra_dc_vlc_thr(Mpeg4DecContext *s)
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{
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    switch (s->intra_dc_threshold) {
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    case 99: return 0;
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    case 13: return 1;
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    case 15: return 2;
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    case 17: return 3;
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    case 19: return 4;
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    case 21: return 5;
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    case 23: return 6;
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    case 0:  return 7;
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    }
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    return 0;
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}
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static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
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{
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    Mpeg4DecContext *ctx = avctx->priv_data;
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    MpegEncContext *s = &ctx->m;
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    VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
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    VAPictureParameterBufferMPEG4 pic_param;
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    int i, err;
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    pic->output_surface = ff_vaapi_get_surface_id(s->current_picture_ptr->f);
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    pic_param = (VAPictureParameterBufferMPEG4) {
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        .vop_width                        = s->width,
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        .vop_height                       = s->height,
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        .forward_reference_picture        = VA_INVALID_ID,
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        .backward_reference_picture       = VA_INVALID_ID,
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        .vol_fields.bits = {
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            .short_video_header           = avctx->codec->id == AV_CODEC_ID_H263,
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            .chroma_format                = CHROMA_420,
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            .interlaced                   = !s->progressive_sequence,
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            .obmc_disable                 = 1,
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            .sprite_enable                = ctx->vol_sprite_usage,
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            .sprite_warping_accuracy      = s->sprite_warping_accuracy,
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            .quant_type                   = s->mpeg_quant,
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            .quarter_sample               = s->quarter_sample,
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            .data_partitioned             = s->data_partitioning,
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            .reversible_vlc               = ctx->rvlc,
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            .resync_marker_disable        = !ctx->resync_marker,
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        },
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        .no_of_sprite_warping_points      = ctx->num_sprite_warping_points,
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        .quant_precision                  = s->quant_precision,
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        .vop_fields.bits = {
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            .vop_coding_type              = s->pict_type - AV_PICTURE_TYPE_I,
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            .backward_reference_vop_coding_type =
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                s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f->pict_type - AV_PICTURE_TYPE_I : 0,
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            .vop_rounding_type            = s->no_rounding,
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            .intra_dc_vlc_thr             = mpeg4_get_intra_dc_vlc_thr(ctx),
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            .top_field_first              = s->top_field_first,
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            .alternate_vertical_scan_flag = s->alternate_scan,
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        },
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        .vop_fcode_forward                = s->f_code,
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        .vop_fcode_backward               = s->b_code,
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        .vop_time_increment_resolution    = avctx->framerate.num,
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        .num_macroblocks_in_gob           = s->mb_width * H263_GOB_HEIGHT(s->height),
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        .num_gobs_in_vop                  =
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            (s->mb_width * s->mb_height) / (s->mb_width * H263_GOB_HEIGHT(s->height)),
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        .TRB                              = s->pb_time,
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        .TRD                              = s->pp_time,
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    };
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    for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) {
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        pic_param.sprite_trajectory_du[i]              = ctx->sprite_traj[i][0];
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        pic_param.sprite_trajectory_dv[i]              = ctx->sprite_traj[i][1];
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    }
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    if (s->pict_type == AV_PICTURE_TYPE_B)
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        pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
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    if (s->pict_type != AV_PICTURE_TYPE_I)
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        pic_param.forward_reference_picture  = ff_vaapi_get_surface_id(s->last_picture.f);
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    err = ff_vaapi_decode_make_param_buffer(avctx, pic,
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                                            VAPictureParameterBufferType,
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                                            &pic_param, sizeof(pic_param));
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    if (err < 0)
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        goto fail;
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    /* Only the first inverse quantisation method uses the weighting matrices */
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    if (pic_param.vol_fields.bits.quant_type) {
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        VAIQMatrixBufferMPEG4 iq_matrix;
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        iq_matrix.load_intra_quant_mat     = 1;
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        iq_matrix.load_non_intra_quant_mat = 1;
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        for (i = 0; i < 64; i++) {
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            int n = s->idsp.idct_permutation[ff_zigzag_direct[i]];
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            iq_matrix.intra_quant_mat[i]     = s->intra_matrix[n];
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            iq_matrix.non_intra_quant_mat[i] = s->inter_matrix[n];
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        }
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        err = ff_vaapi_decode_make_param_buffer(avctx, pic,
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                                                VAIQMatrixBufferType,
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                                                &iq_matrix, sizeof(iq_matrix));
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        if (err < 0)
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            goto fail;
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    }
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    return 0;
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fail:
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    ff_vaapi_decode_cancel(avctx, pic);
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    return err;
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}
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static int vaapi_mpeg4_end_frame(AVCodecContext *avctx)
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{
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    MpegEncContext *s = avctx->priv_data;
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    VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
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    int ret;
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    ret = ff_vaapi_decode_issue(avctx, pic);
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    if (ret < 0)
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        goto fail;
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    ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
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fail:
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    return ret;
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}
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static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
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{
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    MpegEncContext *s = avctx->priv_data;
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    VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
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    VASliceParameterBufferMPEG4 slice_param;
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    int err;
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    slice_param = (VASliceParameterBufferMPEG4) {
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        .slice_data_size   = size,
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        .slice_data_offset = 0,
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        .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,
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        .macroblock_offset = get_bits_count(&s->gb) % 8,
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        .macroblock_number = 0,
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        .quant_scale       = s->qscale,
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    };
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    err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
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                                            &slice_param, sizeof(slice_param),
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                                            buffer, size);
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    if (err < 0) {
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        ff_vaapi_decode_cancel(avctx, pic);
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        return err;
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    }
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    return 0;
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}
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#if CONFIG_MPEG4_VAAPI_HWACCEL
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const AVHWAccel ff_mpeg4_vaapi_hwaccel = {
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    .name                 = "mpeg4_vaapi",
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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_VAAPI,
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    .start_frame          = &vaapi_mpeg4_start_frame,
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    .end_frame            = &vaapi_mpeg4_end_frame,
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    .decode_slice         = &vaapi_mpeg4_decode_slice,
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    .frame_priv_data_size = sizeof(VAAPIDecodePicture),
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    .init                 = &ff_vaapi_decode_init,
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    .uninit               = &ff_vaapi_decode_uninit,
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    .frame_params         = &ff_vaapi_common_frame_params,
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    .priv_data_size       = sizeof(VAAPIDecodeContext),
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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_H263_VAAPI_HWACCEL
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const AVHWAccel ff_h263_vaapi_hwaccel = {
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    .name                 = "h263_vaapi",
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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_VAAPI,
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    .start_frame          = &vaapi_mpeg4_start_frame,
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    .end_frame            = &vaapi_mpeg4_end_frame,
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    .decode_slice         = &vaapi_mpeg4_decode_slice,
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    .frame_priv_data_size = sizeof(VAAPIDecodePicture),
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    .init                 = &ff_vaapi_decode_init,
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    .uninit               = &ff_vaapi_decode_uninit,
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    .frame_params         = &ff_vaapi_common_frame_params,
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    .priv_data_size       = sizeof(VAAPIDecodeContext),
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    .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,
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};
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#endif