1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
* 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 "h263.h"
#include "hwconfig.h"
#include "mpeg4videodec.h"
#include "mpegvideo.h"
#include "vaapi_decode.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 *s = &ctx->m;
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
VAPictureParameterBufferMPEG4 pic_param;
int i, err;
pic->output_surface = ff_vaapi_get_surface_id(s->current_picture_ptr->f);
pic_param = (VAPictureParameterBufferMPEG4) {
.vop_width = s->width,
.vop_height = s->height,
.forward_reference_picture = VA_INVALID_ID,
.backward_reference_picture = VA_INVALID_ID,
.vol_fields.bits = {
.short_video_header = avctx->codec->id == AV_CODEC_ID_H263,
.chroma_format = CHROMA_420,
.interlaced = !s->progressive_sequence,
.obmc_disable = 1,
.sprite_enable = ctx->vol_sprite_usage,
.sprite_warping_accuracy = s->sprite_warping_accuracy,
.quant_type = s->mpeg_quant,
.quarter_sample = s->quarter_sample,
.data_partitioned = s->data_partitioning,
.reversible_vlc = ctx->rvlc,
.resync_marker_disable = !ctx->resync_marker,
},
.no_of_sprite_warping_points = ctx->num_sprite_warping_points,
.quant_precision = s->quant_precision,
.vop_fields.bits = {
.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I,
.backward_reference_vop_coding_type =
s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f->pict_type - AV_PICTURE_TYPE_I : 0,
.vop_rounding_type = s->no_rounding,
.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx),
.top_field_first = s->top_field_first,
.alternate_vertical_scan_flag = s->alternate_scan,
},
.vop_fcode_forward = s->f_code,
.vop_fcode_backward = s->b_code,
.vop_time_increment_resolution = avctx->framerate.num,
.num_macroblocks_in_gob = s->mb_width * H263_GOB_HEIGHT(s->height),
.num_gobs_in_vop =
(s->mb_width * s->mb_height) / (s->mb_width * H263_GOB_HEIGHT(s->height)),
.TRB = s->pb_time,
.TRD = s->pp_time,
};
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];
}
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);
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
VAPictureParameterBufferType,
&pic_param, sizeof(pic_param));
if (err < 0)
goto fail;
/* Only the first inverse quantisation method uses the weighting matrices */
if (pic_param.vol_fields.bits.quant_type) {
VAIQMatrixBufferMPEG4 iq_matrix;
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];
}
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
VAIQMatrixBufferType,
&iq_matrix, sizeof(iq_matrix));
if (err < 0)
goto fail;
}
return 0;
fail:
ff_vaapi_decode_cancel(avctx, pic);
return err;
}
static int vaapi_mpeg4_end_frame(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
int ret;
ret = ff_vaapi_decode_issue(avctx, pic);
if (ret < 0)
goto fail;
ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
fail:
return ret;
}
static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
MpegEncContext *s = avctx->priv_data;
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
VASliceParameterBufferMPEG4 slice_param;
int err;
slice_param = (VASliceParameterBufferMPEG4) {
.slice_data_size = size,
.slice_data_offset = 0,
.slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
.macroblock_offset = get_bits_count(&s->gb) % 8,
.macroblock_number = 0,
.quant_scale = s->qscale,
};
err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
&slice_param, sizeof(slice_param),
buffer, size);
if (err < 0) {
ff_vaapi_decode_cancel(avctx, pic);
return err;
}
return 0;
}
#if CONFIG_MPEG4_VAAPI_HWACCEL
const 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 = &vaapi_mpeg4_end_frame,
.decode_slice = &vaapi_mpeg4_decode_slice,
.frame_priv_data_size = sizeof(VAAPIDecodePicture),
.init = &ff_vaapi_decode_init,
.uninit = &ff_vaapi_decode_uninit,
.frame_params = &ff_vaapi_common_frame_params,
.priv_data_size = sizeof(VAAPIDecodeContext),
.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
};
#endif
#if CONFIG_H263_VAAPI_HWACCEL
const 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 = &vaapi_mpeg4_end_frame,
.decode_slice = &vaapi_mpeg4_decode_slice,
.frame_priv_data_size = sizeof(VAAPIDecodePicture),
.init = &ff_vaapi_decode_init,
.uninit = &ff_vaapi_decode_uninit,
.frame_params = &ff_vaapi_common_frame_params,
.priv_data_size = sizeof(VAAPIDecodeContext),
.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
};
#endif
|
