| /* |
| * 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 "vaapi_internal.h" |
| #include "internal.h" |
| #include "h263.h" |
| #include "mpeg4video.h" |
| #include "mpegvideo.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 * const s = &ctx->m; |
| FFVAContext * const vactx = ff_vaapi_get_context(avctx); |
| VAPictureParameterBufferMPEG4 *pic_param; |
| VAIQMatrixBufferMPEG4 *iq_matrix; |
| int i; |
| |
| ff_dlog(avctx, "vaapi_mpeg4_start_frame()\n"); |
| |
| vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG4); |
| |
| /* Fill in VAPictureParameterBufferMPEG4 */ |
| pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG4)); |
| if (!pic_param) |
| return -1; |
| pic_param->vop_width = s->width; |
| pic_param->vop_height = s->height; |
| pic_param->forward_reference_picture = VA_INVALID_ID; |
| pic_param->backward_reference_picture = VA_INVALID_ID; |
| pic_param->vol_fields.value = 0; /* reset all bits */ |
| pic_param->vol_fields.bits.short_video_header = avctx->codec->id == AV_CODEC_ID_H263; |
| pic_param->vol_fields.bits.chroma_format = CHROMA_420; |
| pic_param->vol_fields.bits.interlaced = !s->progressive_sequence; |
| pic_param->vol_fields.bits.obmc_disable = 1; |
| pic_param->vol_fields.bits.sprite_enable = ctx->vol_sprite_usage; |
| pic_param->vol_fields.bits.sprite_warping_accuracy = s->sprite_warping_accuracy; |
| pic_param->vol_fields.bits.quant_type = s->mpeg_quant; |
| pic_param->vol_fields.bits.quarter_sample = s->quarter_sample; |
| pic_param->vol_fields.bits.data_partitioned = s->data_partitioning; |
| pic_param->vol_fields.bits.reversible_vlc = ctx->rvlc; |
| pic_param->vol_fields.bits.resync_marker_disable = !ctx->resync_marker; |
| pic_param->no_of_sprite_warping_points = ctx->num_sprite_warping_points; |
| 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]; |
| } |
| pic_param->quant_precision = s->quant_precision; |
| pic_param->vop_fields.value = 0; /* reset all bits */ |
| pic_param->vop_fields.bits.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I; |
| pic_param->vop_fields.bits.backward_reference_vop_coding_type = s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f->pict_type - AV_PICTURE_TYPE_I : 0; |
| pic_param->vop_fields.bits.vop_rounding_type = s->no_rounding; |
| pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx); |
| pic_param->vop_fields.bits.top_field_first = s->top_field_first; |
| pic_param->vop_fields.bits.alternate_vertical_scan_flag = s->alternate_scan; |
| pic_param->vop_fcode_forward = s->f_code; |
| pic_param->vop_fcode_backward = s->b_code; |
| pic_param->vop_time_increment_resolution = avctx->framerate.num; |
| pic_param->num_macroblocks_in_gob = s->mb_width * H263_GOB_HEIGHT(s->height); |
| pic_param->num_gobs_in_vop = (s->mb_width * s->mb_height) / pic_param->num_macroblocks_in_gob; |
| pic_param->TRB = s->pb_time; |
| pic_param->TRD = s->pp_time; |
| |
| 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); |
| |
| /* Fill in VAIQMatrixBufferMPEG4 */ |
| /* Only the first inverse quantisation method uses the weighting matrices */ |
| if (pic_param->vol_fields.bits.quant_type) { |
| iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG4)); |
| if (!iq_matrix) |
| return -1; |
| 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]; |
| } |
| } |
| return 0; |
| } |
| |
| static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) |
| { |
| MpegEncContext * const s = avctx->priv_data; |
| FFVAContext * const vactx = ff_vaapi_get_context(avctx); |
| VASliceParameterBufferMPEG4 *slice_param; |
| |
| ff_dlog(avctx, "vaapi_mpeg4_decode_slice(): buffer %p, size %d\n", buffer, size); |
| |
| /* Fill in VASliceParameterBufferMPEG4 */ |
| slice_param = (VASliceParameterBufferMPEG4 *)ff_vaapi_alloc_slice(vactx, buffer, size); |
| if (!slice_param) |
| return -1; |
| slice_param->macroblock_offset = get_bits_count(&s->gb) % 8; |
| slice_param->macroblock_number = 0; |
| slice_param->quant_scale = s->qscale; |
| |
| return 0; |
| } |
| |
| #if CONFIG_MPEG4_VAAPI_HWACCEL |
| 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 = ff_vaapi_mpeg_end_frame, |
| .decode_slice = vaapi_mpeg4_decode_slice, |
| .init = ff_vaapi_context_init, |
| .uninit = ff_vaapi_context_fini, |
| .priv_data_size = sizeof(FFVAContext), |
| }; |
| #endif |
| |
| #if CONFIG_H263_VAAPI_HWACCEL |
| 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 = ff_vaapi_mpeg_end_frame, |
| .decode_slice = vaapi_mpeg4_decode_slice, |
| .init = ff_vaapi_context_init, |
| .uninit = ff_vaapi_context_fini, |
| .priv_data_size = sizeof(FFVAContext), |
| }; |
| #endif |
