1/* 2 * MPEG-4 / H.263 HW decode acceleration through VA API 3 * 4 * Copyright (C) 2008-2009 Splitted-Desktop Systems 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23#include "vaapi_internal.h" 24#include "h263.h" 25#include "mpeg4video.h" 26 27/** Reconstruct bitstream intra_dc_vlc_thr */ 28static int mpeg4_get_intra_dc_vlc_thr(Mpeg4DecContext *s) 29{ 30 switch (s->intra_dc_threshold) { 31 case 99: return 0; 32 case 13: return 1; 33 case 15: return 2; 34 case 17: return 3; 35 case 19: return 4; 36 case 21: return 5; 37 case 23: return 6; 38 case 0: return 7; 39 } 40 return 0; 41} 42 43static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) 44{ 45 Mpeg4DecContext *ctx = avctx->priv_data; 46 MpegEncContext * const s = &ctx->m; 47 struct vaapi_context * const vactx = avctx->hwaccel_context; 48 VAPictureParameterBufferMPEG4 *pic_param; 49 VAIQMatrixBufferMPEG4 *iq_matrix; 50 int i; 51 52 av_dlog(avctx, "vaapi_mpeg4_start_frame()\n"); 53 54 vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG4); 55 56 /* Fill in VAPictureParameterBufferMPEG4 */ 57 pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG4)); 58 if (!pic_param) 59 return -1; 60 pic_param->vop_width = s->width; 61 pic_param->vop_height = s->height; 62 pic_param->forward_reference_picture = VA_INVALID_ID; 63 pic_param->backward_reference_picture = VA_INVALID_ID; 64 pic_param->vol_fields.value = 0; /* reset all bits */ 65 pic_param->vol_fields.bits.short_video_header = avctx->codec->id == AV_CODEC_ID_H263; 66 pic_param->vol_fields.bits.chroma_format = CHROMA_420; 67 pic_param->vol_fields.bits.interlaced = !s->progressive_sequence; 68 pic_param->vol_fields.bits.obmc_disable = 1; 69 pic_param->vol_fields.bits.sprite_enable = ctx->vol_sprite_usage; 70 pic_param->vol_fields.bits.sprite_warping_accuracy = s->sprite_warping_accuracy; 71 pic_param->vol_fields.bits.quant_type = s->mpeg_quant; 72 pic_param->vol_fields.bits.quarter_sample = s->quarter_sample; 73 pic_param->vol_fields.bits.data_partitioned = s->data_partitioning; 74 pic_param->vol_fields.bits.reversible_vlc = ctx->rvlc; 75 pic_param->vol_fields.bits.resync_marker_disable = !ctx->resync_marker; 76 pic_param->no_of_sprite_warping_points = ctx->num_sprite_warping_points; 77 for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) { 78 pic_param->sprite_trajectory_du[i] = ctx->sprite_traj[i][0]; 79 pic_param->sprite_trajectory_dv[i] = ctx->sprite_traj[i][1]; 80 } 81 pic_param->quant_precision = s->quant_precision; 82 pic_param->vop_fields.value = 0; /* reset all bits */ 83 pic_param->vop_fields.bits.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I; 84 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; 85 pic_param->vop_fields.bits.vop_rounding_type = s->no_rounding; 86 pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx); 87 pic_param->vop_fields.bits.top_field_first = s->top_field_first; 88 pic_param->vop_fields.bits.alternate_vertical_scan_flag = s->alternate_scan; 89 pic_param->vop_fcode_forward = s->f_code; 90 pic_param->vop_fcode_backward = s->b_code; 91 pic_param->vop_time_increment_resolution = avctx->time_base.den; 92 pic_param->num_macroblocks_in_gob = s->mb_width * ff_h263_get_gob_height(s); 93 pic_param->num_gobs_in_vop = (s->mb_width * s->mb_height) / pic_param->num_macroblocks_in_gob; 94 pic_param->TRB = s->pb_time; 95 pic_param->TRD = s->pp_time; 96 97 if (s->pict_type == AV_PICTURE_TYPE_B) 98 pic_param->backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f); 99 if (s->pict_type != AV_PICTURE_TYPE_I) 100 pic_param->forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f); 101 102 /* Fill in VAIQMatrixBufferMPEG4 */ 103 /* Only the first inverse quantisation method uses the weighting matrices */ 104 if (pic_param->vol_fields.bits.quant_type) { 105 iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG4)); 106 if (!iq_matrix) 107 return -1; 108 iq_matrix->load_intra_quant_mat = 1; 109 iq_matrix->load_non_intra_quant_mat = 1; 110 111 for (i = 0; i < 64; i++) { 112 int n = s->idsp.idct_permutation[ff_zigzag_direct[i]]; 113 iq_matrix->intra_quant_mat[i] = s->intra_matrix[n]; 114 iq_matrix->non_intra_quant_mat[i] = s->inter_matrix[n]; 115 } 116 } 117 return 0; 118} 119 120static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) 121{ 122 MpegEncContext * const s = avctx->priv_data; 123 VASliceParameterBufferMPEG4 *slice_param; 124 125 av_dlog(avctx, "vaapi_mpeg4_decode_slice(): buffer %p, size %d\n", buffer, size); 126 127 /* Fill in VASliceParameterBufferMPEG4 */ 128 slice_param = (VASliceParameterBufferMPEG4 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size); 129 if (!slice_param) 130 return -1; 131 slice_param->macroblock_offset = get_bits_count(&s->gb) % 8; 132 slice_param->macroblock_number = 0; 133 slice_param->quant_scale = s->qscale; 134 135 return 0; 136} 137 138#if CONFIG_MPEG4_VAAPI_HWACCEL 139AVHWAccel ff_mpeg4_vaapi_hwaccel = { 140 .name = "mpeg4_vaapi", 141 .type = AVMEDIA_TYPE_VIDEO, 142 .id = AV_CODEC_ID_MPEG4, 143 .pix_fmt = AV_PIX_FMT_VAAPI_VLD, 144 .start_frame = vaapi_mpeg4_start_frame, 145 .end_frame = ff_vaapi_mpeg_end_frame, 146 .decode_slice = vaapi_mpeg4_decode_slice, 147}; 148#endif 149 150#if CONFIG_H263_VAAPI_HWACCEL 151AVHWAccel ff_h263_vaapi_hwaccel = { 152 .name = "h263_vaapi", 153 .type = AVMEDIA_TYPE_VIDEO, 154 .id = AV_CODEC_ID_H263, 155 .pix_fmt = AV_PIX_FMT_VAAPI_VLD, 156 .start_frame = vaapi_mpeg4_start_frame, 157 .end_frame = ff_vaapi_mpeg_end_frame, 158 .decode_slice = vaapi_mpeg4_decode_slice, 159}; 160#endif 161