2 * Copyright (c) 2010, Google, Inc.
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * VP8 decoder support via libvpx
26 #define VPX_CODEC_DISABLE_COMPAT 1
27 #include <vpx/vpx_decoder.h>
28 #include <vpx/vp8dx.h>
30 #include "libavutil/common.h"
31 #include "libavutil/imgutils.h"
36 typedef struct VP8DecoderContext
{
37 struct vpx_codec_ctx decoder
;
40 static av_cold
int vpx_init(AVCodecContext
*avctx
,
41 const struct vpx_codec_iface
*iface
)
43 VP8Context
*ctx
= avctx
->priv_data
;
44 struct vpx_codec_dec_cfg deccfg
= {
45 /* token partitions+1 would be a decent choice */
46 .threads
= FFMIN(avctx
->thread_count
, 16)
49 av_log(avctx
, AV_LOG_INFO
, "%s\n", vpx_codec_version_str());
50 av_log(avctx
, AV_LOG_VERBOSE
, "%s\n", vpx_codec_build_config());
52 if (vpx_codec_dec_init(&ctx
->decoder
, iface
, &deccfg
, 0) != VPX_CODEC_OK
) {
53 const char *error
= vpx_codec_error(&ctx
->decoder
);
54 av_log(avctx
, AV_LOG_ERROR
, "Failed to initialize decoder: %s\n",
56 return AVERROR(EINVAL
);
62 // returns 0 on success, AVERROR_INVALIDDATA otherwise
63 static int set_pix_fmt(AVCodecContext
*avctx
, struct vpx_image
*img
) {
64 if (avctx
->codec_id
== AV_CODEC_ID_VP8
&& img
->fmt
!= VPX_IMG_FMT_I420
)
65 return AVERROR_INVALIDDATA
;
67 case VPX_IMG_FMT_I420
:
68 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P
;
70 #if CONFIG_LIBVPX_VP9_DECODER
71 case VPX_IMG_FMT_I422
:
72 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P
;
74 case VPX_IMG_FMT_I444
:
75 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P
;
77 #ifdef VPX_IMG_FMT_HIGHBITDEPTH
78 case VPX_IMG_FMT_I42016
:
79 if (img
->bit_depth
== 10) {
80 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P10LE
;
82 } else if (img
->bit_depth
== 12) {
83 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P12LE
;
86 return AVERROR_INVALIDDATA
;
88 case VPX_IMG_FMT_I42216
:
89 if (img
->bit_depth
== 10) {
90 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P10LE
;
92 } else if (img
->bit_depth
== 12) {
93 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P12LE
;
96 return AVERROR_INVALIDDATA
;
98 case VPX_IMG_FMT_I44416
:
99 if (img
->bit_depth
== 10) {
100 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P10LE
;
102 } else if (img
->bit_depth
== 12) {
103 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P12LE
;
106 return AVERROR_INVALIDDATA
;
111 return AVERROR_INVALIDDATA
;
115 static int vp8_decode(AVCodecContext
*avctx
,
116 void *data
, int *got_frame
, AVPacket
*avpkt
)
118 VP8Context
*ctx
= avctx
->priv_data
;
119 AVFrame
*picture
= data
;
120 const void *iter
= NULL
;
121 struct vpx_image
*img
;
124 if (vpx_codec_decode(&ctx
->decoder
, avpkt
->data
, avpkt
->size
, NULL
, 0) !=
126 const char *error
= vpx_codec_error(&ctx
->decoder
);
127 const char *detail
= vpx_codec_error_detail(&ctx
->decoder
);
129 av_log(avctx
, AV_LOG_ERROR
, "Failed to decode frame: %s\n", error
);
131 av_log(avctx
, AV_LOG_ERROR
, " Additional information: %s\n",
133 return AVERROR_INVALIDDATA
;
136 if ((img
= vpx_codec_get_frame(&ctx
->decoder
, &iter
))) {
137 if ((ret
= set_pix_fmt(avctx
, img
)) < 0) {
138 #ifdef VPX_IMG_FMT_HIGHBITDEPTH
139 av_log(avctx
, AV_LOG_ERROR
, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
140 img
->fmt
, img
->bit_depth
);
142 av_log(avctx
, AV_LOG_ERROR
, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
148 if ((int) img
->d_w
!= avctx
->width
|| (int) img
->d_h
!= avctx
->height
) {
149 av_log(avctx
, AV_LOG_INFO
, "dimension change! %dx%d -> %dx%d\n",
150 avctx
->width
, avctx
->height
, img
->d_w
, img
->d_h
);
151 ret
= ff_set_dimensions(avctx
, img
->d_w
, img
->d_h
);
155 if ((ret
= ff_get_buffer(avctx
, picture
, 0)) < 0)
157 av_image_copy(picture
->data
, picture
->linesize
, (const uint8_t **)img
->planes
,
158 img
->stride
, avctx
->pix_fmt
, img
->d_w
, img
->d_h
);
164 static av_cold
int vp8_free(AVCodecContext
*avctx
)
166 VP8Context
*ctx
= avctx
->priv_data
;
167 vpx_codec_destroy(&ctx
->decoder
);
171 #if CONFIG_LIBVPX_VP8_DECODER
172 static av_cold
int vp8_init(AVCodecContext
*avctx
)
174 return vpx_init(avctx
, &vpx_codec_vp8_dx_algo
);
177 AVCodec ff_libvpx_vp8_decoder
= {
179 .long_name
= NULL_IF_CONFIG_SMALL("libvpx VP8"),
180 .type
= AVMEDIA_TYPE_VIDEO
,
181 .id
= AV_CODEC_ID_VP8
,
182 .priv_data_size
= sizeof(VP8Context
),
185 .decode
= vp8_decode
,
186 .capabilities
= CODEC_CAP_AUTO_THREADS
| CODEC_CAP_DR1
,
188 #endif /* CONFIG_LIBVPX_VP8_DECODER */
190 #if CONFIG_LIBVPX_VP9_DECODER
191 static av_cold
int vp9_init(AVCodecContext
*avctx
)
193 return vpx_init(avctx
, &vpx_codec_vp9_dx_algo
);
196 AVCodec ff_libvpx_vp9_decoder
= {
197 .name
= "libvpx-vp9",
198 .long_name
= NULL_IF_CONFIG_SMALL("libvpx VP9"),
199 .type
= AVMEDIA_TYPE_VIDEO
,
200 .id
= AV_CODEC_ID_VP9
,
201 .priv_data_size
= sizeof(VP8Context
),
204 .decode
= vp8_decode
,
205 .capabilities
= CODEC_CAP_AUTO_THREADS
| CODEC_CAP_DR1
,
206 .init_static_data
= ff_vp9_init_static
,
208 #endif /* CONFIG_LIBVPX_VP9_DECODER */