| 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 */ |
| 28 | static 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 | |
| 43 | static 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 | |
| 120 | static 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 |
| 139 | AVHWAccel 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 |
| 151 | AVHWAccel 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 |