| /* |
| * 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_HWACCEL |
| const 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_HWACCEL |
| const 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 |