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libvpxdec.c
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1 /*
2  * Copyright (c) 2010, Google, Inc.
3  *
4  * This file is part of FFmpeg.
5  *
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.
10  *
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.
15  *
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
19  */
20 
21 /**
22  * @file
23  * VP8 decoder support via libvpx
24  */
25 
26 #define VPX_CODEC_DISABLE_COMPAT 1
27 #include <vpx/vpx_decoder.h>
28 #include <vpx/vp8dx.h>
29 
30 #include "libavutil/common.h"
31 #include "libavutil/imgutils.h"
32 #include "avcodec.h"
33 #include "internal.h"
34 #include "libvpx.h"
35 
36 typedef struct VP8DecoderContext {
37  struct vpx_codec_ctx decoder;
38 } VP8Context;
39 
40 static av_cold int vpx_init(AVCodecContext *avctx,
41  const struct vpx_codec_iface *iface)
42 {
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)
47  };
48 
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());
51 
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",
55  error);
56  return AVERROR(EINVAL);
57  }
58 
59  return 0;
60 }
61 
62 // returns 0 on success, AVERROR_INVALIDDATA otherwise
63 static int set_pix_fmt(AVCodecContext *avctx, struct vpx_image *img)
64 {
65  if (avctx->codec_id == AV_CODEC_ID_VP8 && img->fmt != VPX_IMG_FMT_I420)
66  return AVERROR_INVALIDDATA;
67  switch (img->fmt) {
68  case VPX_IMG_FMT_I420:
69  avctx->pix_fmt = AV_PIX_FMT_YUV420P;
70  return 0;
71 #if CONFIG_LIBVPX_VP9_DECODER
72  case VPX_IMG_FMT_I422:
73  avctx->pix_fmt = AV_PIX_FMT_YUV422P;
74  return 0;
75 #if VPX_IMAGE_ABI_VERSION >= 3
76  case VPX_IMG_FMT_I440:
77  avctx->pix_fmt = AV_PIX_FMT_YUV440P;
78  return 0;
79 #endif
80  case VPX_IMG_FMT_I444:
81  avctx->pix_fmt = AV_PIX_FMT_YUV444P;
82  return 0;
83 #ifdef VPX_IMG_FMT_HIGHBITDEPTH
84  case VPX_IMG_FMT_I42016:
85  if (img->bit_depth == 10) {
87  return 0;
88  } else if (img->bit_depth == 12) {
90  return 0;
91  } else {
92  return AVERROR_INVALIDDATA;
93  }
94  case VPX_IMG_FMT_I42216:
95  if (img->bit_depth == 10) {
97  return 0;
98  } else if (img->bit_depth == 12) {
100  return 0;
101  } else {
102  return AVERROR_INVALIDDATA;
103  }
104 #if VPX_IMAGE_ABI_VERSION >= 3
105  case VPX_IMG_FMT_I44016:
106  if (img->bit_depth == 10) {
108  return 0;
109  } else if (img->bit_depth == 12) {
111  return 0;
112  } else {
113  return AVERROR_INVALIDDATA;
114  }
115 #endif
116  case VPX_IMG_FMT_I44416:
117  if (img->bit_depth == 10) {
119  return 0;
120  } else if (img->bit_depth == 12) {
122  return 0;
123  } else {
124  return AVERROR_INVALIDDATA;
125  }
126 #endif
127 #endif
128  default:
129  return AVERROR_INVALIDDATA;
130  }
131 }
132 
133 static int vp8_decode(AVCodecContext *avctx,
134  void *data, int *got_frame, AVPacket *avpkt)
135 {
136  VP8Context *ctx = avctx->priv_data;
137  AVFrame *picture = data;
138  const void *iter = NULL;
139  struct vpx_image *img;
140  int ret;
141 
142  if (vpx_codec_decode(&ctx->decoder, avpkt->data, avpkt->size, NULL, 0) !=
143  VPX_CODEC_OK) {
144  const char *error = vpx_codec_error(&ctx->decoder);
145  const char *detail = vpx_codec_error_detail(&ctx->decoder);
146 
147  av_log(avctx, AV_LOG_ERROR, "Failed to decode frame: %s\n", error);
148  if (detail)
149  av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n",
150  detail);
151  return AVERROR_INVALIDDATA;
152  }
153 
154  if ((img = vpx_codec_get_frame(&ctx->decoder, &iter))) {
155  if ((ret = set_pix_fmt(avctx, img)) < 0) {
156 #ifdef VPX_IMG_FMT_HIGHBITDEPTH
157  av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
158  img->fmt, img->bit_depth);
159 #else
160  av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
161  img->fmt, 8);
162 #endif
163  return ret;
164  }
165 
166  if ((int) img->d_w != avctx->width || (int) img->d_h != avctx->height) {
167  av_log(avctx, AV_LOG_INFO, "dimension change! %dx%d -> %dx%d\n",
168  avctx->width, avctx->height, img->d_w, img->d_h);
169  ret = ff_set_dimensions(avctx, img->d_w, img->d_h);
170  if (ret < 0)
171  return ret;
172  }
173  if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
174  return ret;
175  av_image_copy(picture->data, picture->linesize, (const uint8_t **)img->planes,
176  img->stride, avctx->pix_fmt, img->d_w, img->d_h);
177  *got_frame = 1;
178  }
179  return avpkt->size;
180 }
181 
182 static av_cold int vp8_free(AVCodecContext *avctx)
183 {
184  VP8Context *ctx = avctx->priv_data;
185  vpx_codec_destroy(&ctx->decoder);
186  return 0;
187 }
188 
189 #if CONFIG_LIBVPX_VP8_DECODER
190 static av_cold int vp8_init(AVCodecContext *avctx)
191 {
192  return vpx_init(avctx, &vpx_codec_vp8_dx_algo);
193 }
194 
195 AVCodec ff_libvpx_vp8_decoder = {
196  .name = "libvpx",
197  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
198  .type = AVMEDIA_TYPE_VIDEO,
199  .id = AV_CODEC_ID_VP8,
200  .priv_data_size = sizeof(VP8Context),
201  .init = vp8_init,
202  .close = vp8_free,
203  .decode = vp8_decode,
204  .capabilities = CODEC_CAP_AUTO_THREADS | CODEC_CAP_DR1,
205 };
206 #endif /* CONFIG_LIBVPX_VP8_DECODER */
207 
208 #if CONFIG_LIBVPX_VP9_DECODER
209 static av_cold int vp9_init(AVCodecContext *avctx)
210 {
211  return vpx_init(avctx, &vpx_codec_vp9_dx_algo);
212 }
213 
214 AVCodec ff_libvpx_vp9_decoder = {
215  .name = "libvpx-vp9",
216  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP9"),
217  .type = AVMEDIA_TYPE_VIDEO,
218  .id = AV_CODEC_ID_VP9,
219  .priv_data_size = sizeof(VP8Context),
220  .init = vp9_init,
221  .close = vp8_free,
222  .decode = vp8_decode,
223  .capabilities = CODEC_CAP_AUTO_THREADS | CODEC_CAP_DR1,
225 };
226 #endif /* CONFIG_LIBVPX_VP9_DECODER */
#define NULL
Definition: coverity.c:32
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:307
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:159
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:68
misc image utilities
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:229
struct vpx_codec_ctx decoder
Definition: libvpxdec.c:37
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1163
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1444
AVCodec.
Definition: avcodec.h:3181
#define img
uint8_t
#define av_cold
Definition: attributes.h:74
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:280
static av_cold void init_static_data(void)
Definition: dsddec.c:82
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:789
uint8_t * data
Definition: avcodec.h:1162
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
#define av_log(a,...)
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:165
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:161
const char * name
Name of the codec implementation.
Definition: avcodec.h:3188
Libavcodec external API header.
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
Definition: imgutils.c:288
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:67
static av_cold int vp8_free(AVCodecContext *avctx)
Definition: libvpxdec.c:182
#define FFMIN(a, b)
Definition: common.h:66
ret
Definition: avfilter.c:974
static const chunk_decoder decoder[8]
Definition: dfa.c:327
int width
picture width / height.
Definition: avcodec.h:1414
static av_cold int vpx_init(AVCodecContext *avctx, const struct vpx_codec_iface *iface)
Definition: libvpxdec.c:40
#define CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:878
static int vp8_decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: libvpxdec.c:133
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:272
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2753
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
enum AVCodecID codec_id
Definition: avcodec.h:1258
av_cold void ff_vp9_init_static(AVCodec *codec)
Definition: libvpx.c:61
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
static av_cold int vp9_init(AVFormatContext *ctx, int st_index, PayloadContext *data)
Definition: rtpdec_vp9.c:34
main external API structure.
Definition: avcodec.h:1241
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:1035
planar YUV 4:4:0,24bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:309
static int set_pix_fmt(AVCodecContext *avctx, struct vpx_image *img)
Definition: libvpxdec.c:63
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:522
static av_cold int vp8_init(AVFormatContext *s, int st_index, PayloadContext *vp8)
Definition: rtpdec_vp8.c:263
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:63
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:276
common internal api header.
common internal and external API header
void * priv_data
Definition: avcodec.h:1283
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:101
This structure stores compressed data.
Definition: avcodec.h:1139