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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; | |
f6fa7814 | 91 | pic_param->vop_time_increment_resolution = avctx->framerate.num; |
2ba45a60 DM |
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 |