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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 |