/* * MPEG-4 / H.263 HW decode acceleration through VA API * * Copyright (C) 2008-2009 Splitted-Desktop Systems * * 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 "h263.h"#include "hwconfig.h"#include "internal.h"#include "mpeg4video.h"#include "mpegvideo.h"#include "vaapi_decode.h" /** Reconstruct bitstream intra_dc_vlc_thr */static int mpeg4_get_intra_dc_vlc_thr(Mpeg4DecContext *s){    switch (s->intra_dc_threshold) {    case 99: return 0;    case 13: return 1;    case 15: return 2;    case 17: return 3;    case 19: return 4;    case 21: return 5;    case 23: return 6;    case 0:  return 7;    }    return 0;} static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size){    Mpeg4DecContext *ctx = avctx->priv_data;    MpegEncContext *s = &ctx->m;    VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;    VAPictureParameterBufferMPEG4 pic_param;    int i, err;     pic->output_surface = ff_vaapi_get_surface_id(s->current_picture_ptr->f);     pic_param = (VAPictureParameterBufferMPEG4) {        .vop_width                        = s->width,        .vop_height                       = s->height,        .forward_reference_picture        = VA_INVALID_ID,        .backward_reference_picture       = VA_INVALID_ID,        .vol_fields.bits = {            .short_video_header           = avctx->codec->id == AV_CODEC_ID_H263,            .chroma_format                = CHROMA_420,            .interlaced                   = !s->progressive_sequence,            .obmc_disable                 = 1,            .sprite_enable                = ctx->vol_sprite_usage,            .sprite_warping_accuracy      = s->sprite_warping_accuracy,            .quant_type                   = s->mpeg_quant,            .quarter_sample               = s->quarter_sample,            .data_partitioned             = s->data_partitioning,            .reversible_vlc               = ctx->rvlc,            .resync_marker_disable        = !ctx->resync_marker,        },        .no_of_sprite_warping_points      = ctx->num_sprite_warping_points,        .quant_precision                  = s->quant_precision,        .vop_fields.bits = {            .vop_coding_type              = s->pict_type - AV_PICTURE_TYPE_I,            .backward_reference_vop_coding_type =                s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f->pict_type - AV_PICTURE_TYPE_I : 0,            .vop_rounding_type            = s->no_rounding,            .intra_dc_vlc_thr             = mpeg4_get_intra_dc_vlc_thr(ctx),            .top_field_first              = s->top_field_first,            .alternate_vertical_scan_flag = s->alternate_scan,        },        .vop_fcode_forward                = s->f_code,        .vop_fcode_backward               = s->b_code,        .vop_time_increment_resolution    = avctx->framerate.num,        .num_macroblocks_in_gob           = s->mb_width * H263_GOB_HEIGHT(s->height),        .num_gobs_in_vop                  =            (s->mb_width * s->mb_height) / (s->mb_width * H263_GOB_HEIGHT(s->height)),        .TRB                              = s->pb_time,        .TRD                              = s->pp_time,    };     for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) {        pic_param.sprite_trajectory_du[i]              = ctx->sprite_traj[i][0];        pic_param.sprite_trajectory_dv[i]              = ctx->sprite_traj[i][1];    }     if (s->pict_type == AV_PICTURE_TYPE_B)        pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);    if (s->pict_type != AV_PICTURE_TYPE_I)        pic_param.forward_reference_picture  = ff_vaapi_get_surface_id(s->last_picture.f);     err = ff_vaapi_decode_make_param_buffer(avctx, pic,                                            VAPictureParameterBufferType,                                            &pic_param, sizeof(pic_param));    if (err < 0)        goto fail;     /* Only the first inverse quantisation method uses the weighting matrices */    if (pic_param.vol_fields.bits.quant_type) {        VAIQMatrixBufferMPEG4 iq_matrix;         iq_matrix.load_intra_quant_mat     = 1;        iq_matrix.load_non_intra_quant_mat = 1;         for (i = 0; i < 64; i++) {            int n = s->idsp.idct_permutation[ff_zigzag_direct[i]];            iq_matrix.intra_quant_mat[i]     = s->intra_matrix[n];            iq_matrix.non_intra_quant_mat[i] = s->inter_matrix[n];        }         err = ff_vaapi_decode_make_param_buffer(avctx, pic,                                                VAIQMatrixBufferType,                                                &iq_matrix, sizeof(iq_matrix));        if (err < 0)            goto fail;    }    return 0; fail:    ff_vaapi_decode_cancel(avctx, pic);    return err;} static int vaapi_mpeg4_end_frame(AVCodecContext *avctx){    MpegEncContext *s = avctx->priv_data;    VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;    int ret;     ret = ff_vaapi_decode_issue(avctx, pic);    if (ret < 0)        goto fail;     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height); fail:    return ret;} static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size){    MpegEncContext *s = avctx->priv_data;    VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;    VASliceParameterBufferMPEG4 slice_param;    int err;     slice_param = (VASliceParameterBufferMPEG4) {        .slice_data_size   = size,        .slice_data_offset = 0,        .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,        .macroblock_offset = get_bits_count(&s->gb) % 8,        .macroblock_number = 0,        .quant_scale       = s->qscale,    };     err = ff_vaapi_decode_make_slice_buffer(avctx, pic,                                            &slice_param, sizeof(slice_param),                                            buffer, size);    if (err < 0) {        ff_vaapi_decode_cancel(avctx, pic);        return err;    }     return 0;} #if CONFIG_MPEG4_VAAPI_HWACCELconst AVHWAccel ff_mpeg4_vaapi_hwaccel = {    .name                 = "mpeg4_vaapi",    .type                 = AVMEDIA_TYPE_VIDEO,    .id                   = AV_CODEC_ID_MPEG4,    .pix_fmt              = AV_PIX_FMT_VAAPI,    .start_frame          = &vaapi_mpeg4_start_frame,    .end_frame            = &vaapi_mpeg4_end_frame,    .decode_slice         = &vaapi_mpeg4_decode_slice,    .frame_priv_data_size = sizeof(VAAPIDecodePicture),    .init                 = &ff_vaapi_decode_init,    .uninit               = &ff_vaapi_decode_uninit,    .frame_params         = &ff_vaapi_common_frame_params,    .priv_data_size       = sizeof(VAAPIDecodeContext),    .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,};#endif #if CONFIG_H263_VAAPI_HWACCELconst AVHWAccel ff_h263_vaapi_hwaccel = {    .name                 = "h263_vaapi",    .type                 = AVMEDIA_TYPE_VIDEO,    .id                   = AV_CODEC_ID_H263,    .pix_fmt              = AV_PIX_FMT_VAAPI,    .start_frame          = &vaapi_mpeg4_start_frame,    .end_frame            = &vaapi_mpeg4_end_frame,    .decode_slice         = &vaapi_mpeg4_decode_slice,    .frame_priv_data_size = sizeof(VAAPIDecodePicture),    .init                 = &ff_vaapi_decode_init,    .uninit               = &ff_vaapi_decode_uninit,    .frame_params         = &ff_vaapi_common_frame_params,    .priv_data_size       = sizeof(VAAPIDecodeContext),    .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,};#endif