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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/*
* Copyright (c) 2010, Google, Inc.
*
* 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
*/
/**
* @file
* AV1 decoder support via libaom
*/
#include <aom/aom_decoder.h>
#include <aom/aomdx.h>
#include "libavutil/common.h"
#include "libavutil/cpu.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"
#include "libaom.h"
#include "profiles.h"
typedef struct AV1DecodeContext {
struct aom_codec_ctx decoder;
} AV1DecodeContext;
static av_cold int aom_init(AVCodecContext *avctx,
const struct aom_codec_iface *iface)
{
AV1DecodeContext *ctx = avctx->priv_data;
struct aom_codec_dec_cfg deccfg = {
.threads = FFMIN(avctx->thread_count ? avctx->thread_count : av_cpu_count(), 16)
};
av_log(avctx, AV_LOG_INFO, "%s\n", aom_codec_version_str());
av_log(avctx, AV_LOG_VERBOSE, "%s\n", aom_codec_build_config());
if (aom_codec_dec_init(&ctx->decoder, iface, &deccfg, 0) != AOM_CODEC_OK) {
const char *error = aom_codec_error(&ctx->decoder);
av_log(avctx, AV_LOG_ERROR, "Failed to initialize decoder: %s\n",
error);
return AVERROR(EINVAL);
}
return 0;
}
// returns 0 on success, AVERROR_INVALIDDATA otherwise
static int set_pix_fmt(AVCodecContext *avctx, struct aom_image *img)
{
static const enum AVColorRange color_ranges[] = {
AVCOL_RANGE_MPEG, AVCOL_RANGE_JPEG
};
avctx->color_range = color_ranges[img->range];
avctx->color_primaries = img->cp;
avctx->colorspace = img->mc;
avctx->color_trc = img->tc;
switch (img->fmt) {
case AOM_IMG_FMT_I420:
case AOM_IMG_FMT_I42016:
if (img->bit_depth == 8) {
avctx->pix_fmt = img->monochrome ?
AV_PIX_FMT_GRAY8 : AV_PIX_FMT_YUV420P;
avctx->profile = FF_PROFILE_AV1_MAIN;
return 0;
} else if (img->bit_depth == 10) {
avctx->pix_fmt = img->monochrome ?
AV_PIX_FMT_GRAY10 : AV_PIX_FMT_YUV420P10;
avctx->profile = FF_PROFILE_AV1_MAIN;
return 0;
} else if (img->bit_depth == 12) {
avctx->pix_fmt = img->monochrome ?
AV_PIX_FMT_GRAY12 : AV_PIX_FMT_YUV420P12;
avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
return 0;
} else {
return AVERROR_INVALIDDATA;
}
case AOM_IMG_FMT_I422:
case AOM_IMG_FMT_I42216:
if (img->bit_depth == 8) {
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
return 0;
} else if (img->bit_depth == 10) {
avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
return 0;
} else if (img->bit_depth == 12) {
avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
return 0;
} else {
return AVERROR_INVALIDDATA;
}
case AOM_IMG_FMT_I444:
case AOM_IMG_FMT_I44416:
if (img->bit_depth == 8) {
avctx->pix_fmt = AV_PIX_FMT_YUV444P;
avctx->profile = FF_PROFILE_AV1_HIGH;
return 0;
} else if (img->bit_depth == 10) {
avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
avctx->profile = FF_PROFILE_AV1_HIGH;
return 0;
} else if (img->bit_depth == 12) {
avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
return 0;
} else {
return AVERROR_INVALIDDATA;
}
default:
return AVERROR_INVALIDDATA;
}
}
static int aom_decode(AVCodecContext *avctx, AVFrame *picture,
int *got_frame, AVPacket *avpkt)
{
AV1DecodeContext *ctx = avctx->priv_data;
const void *iter = NULL;
struct aom_image *img;
int ret;
if (aom_codec_decode(&ctx->decoder, avpkt->data, avpkt->size, NULL) !=
AOM_CODEC_OK) {
const char *error = aom_codec_error(&ctx->decoder);
const char *detail = aom_codec_error_detail(&ctx->decoder);
av_log(avctx, AV_LOG_ERROR, "Failed to decode frame: %s\n", error);
if (detail)
av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n",
detail);
return AVERROR_INVALIDDATA;
}
if ((img = aom_codec_get_frame(&ctx->decoder, &iter))) {
if (img->d_w > img->w || img->d_h > img->h) {
av_log(avctx, AV_LOG_ERROR, "Display dimensions %dx%d exceed storage %dx%d\n",
img->d_w, img->d_h, img->w, img->h);
return AVERROR_EXTERNAL;
}
if ((ret = set_pix_fmt(avctx, img)) < 0) {
av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
img->fmt, img->bit_depth);
return ret;
}
if ((int)img->d_w != avctx->width || (int)img->d_h != avctx->height) {
av_log(avctx, AV_LOG_INFO, "dimension change! %dx%d -> %dx%d\n",
avctx->width, avctx->height, img->d_w, img->d_h);
ret = ff_set_dimensions(avctx, img->d_w, img->d_h);
if (ret < 0)
return ret;
}
if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
return ret;
#ifdef AOM_CTRL_AOMD_GET_FRAME_FLAGS
{
aom_codec_frame_flags_t flags;
ret = aom_codec_control(&ctx->decoder, AOMD_GET_FRAME_FLAGS, &flags);
if (ret == AOM_CODEC_OK) {
picture->key_frame = !!(flags & AOM_FRAME_IS_KEY);
if (flags & (AOM_FRAME_IS_KEY | AOM_FRAME_IS_INTRAONLY))
picture->pict_type = AV_PICTURE_TYPE_I;
else if (flags & AOM_FRAME_IS_SWITCH)
picture->pict_type = AV_PICTURE_TYPE_SP;
else
picture->pict_type = AV_PICTURE_TYPE_P;
}
}
#endif
av_reduce(&picture->sample_aspect_ratio.num,
&picture->sample_aspect_ratio.den,
picture->height * img->r_w,
picture->width * img->r_h,
INT_MAX);
ff_set_sar(avctx, picture->sample_aspect_ratio);
if ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) && img->bit_depth == 8)
ff_aom_image_copy_16_to_8(picture, img);
else {
const uint8_t *planes[4] = { img->planes[0], img->planes[1], img->planes[2] };
const int stride[4] = { img->stride[0], img->stride[1], img->stride[2] };
av_image_copy(picture->data, picture->linesize, planes,
stride, avctx->pix_fmt, img->d_w, img->d_h);
}
*got_frame = 1;
}
return avpkt->size;
}
static av_cold int aom_free(AVCodecContext *avctx)
{
AV1DecodeContext *ctx = avctx->priv_data;
aom_codec_destroy(&ctx->decoder);
return 0;
}
static av_cold int av1_init(AVCodecContext *avctx)
{
return aom_init(avctx, aom_codec_av1_dx());
}
const FFCodec ff_libaom_av1_decoder = {
.p.name = "libaom-av1",
CODEC_LONG_NAME("libaom AV1"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_AV1,
.priv_data_size = sizeof(AV1DecodeContext),
.init = av1_init,
.close = aom_free,
FF_CODEC_DECODE_CB(aom_decode),
.p.capabilities = AV_CODEC_CAP_OTHER_THREADS | AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_NOT_INIT_THREADSAFE |
FF_CODEC_CAP_AUTO_THREADS,
.p.profiles = NULL_IF_CONFIG_SMALL(ff_av1_profiles),
.p.wrapper_name = "libaom",
};
|
