FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
libaomdec.c
Go to the documentation of this file.
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  * AV1 decoder support via libaom
24  */
25 
26 #include <aom/aom_decoder.h>
27 #include <aom/aomdx.h>
28 
29 #include "libavutil/common.h"
30 #include "libavutil/imgutils.h"
31 
32 #include "avcodec.h"
33 #include "internal.h"
34 #include "profiles.h"
35 
36 typedef struct AV1DecodeContext {
37  struct aom_codec_ctx decoder;
39 
40 static av_cold int aom_init(AVCodecContext *avctx,
41  const struct aom_codec_iface *iface)
42 {
43  AV1DecodeContext *ctx = avctx->priv_data;
44  struct aom_codec_dec_cfg deccfg = {
45  .threads = FFMIN(avctx->thread_count ? avctx->thread_count : av_cpu_count(), 16)
46  };
47 
48  av_log(avctx, AV_LOG_INFO, "%s\n", aom_codec_version_str());
49  av_log(avctx, AV_LOG_VERBOSE, "%s\n", aom_codec_build_config());
50 
51  if (aom_codec_dec_init(&ctx->decoder, iface, &deccfg, 0) != AOM_CODEC_OK) {
52  const char *error = aom_codec_error(&ctx->decoder);
53  av_log(avctx, AV_LOG_ERROR, "Failed to initialize decoder: %s\n",
54  error);
55  return AVERROR(EINVAL);
56  }
57 
58  return 0;
59 }
60 
61 static void image_copy_16_to_8(AVFrame *pic, struct aom_image *img)
62 {
64  int i;
65 
66  for (i = 0; i < desc->nb_components; i++) {
67  int w = img->d_w;
68  int h = img->d_h;
69  int x, y;
70 
71  if (i) {
72  w = (w + img->x_chroma_shift) >> img->x_chroma_shift;
73  h = (h + img->y_chroma_shift) >> img->y_chroma_shift;
74  }
75 
76  for (y = 0; y < h; y++) {
77  uint16_t *src = (uint16_t *)(img->planes[i] + y * img->stride[i]);
78  uint8_t *dst = pic->data[i] + y * pic->linesize[i];
79  for (x = 0; x < w; x++)
80  *dst++ = *src++;
81  }
82  }
83 }
84 
85 // returns 0 on success, AVERROR_INVALIDDATA otherwise
86 static int set_pix_fmt(AVCodecContext *avctx, struct aom_image *img)
87 {
88  static const enum AVColorRange color_ranges[] = {
90  };
91  avctx->color_range = color_ranges[img->range];
92  avctx->color_primaries = img->cp;
93  avctx->colorspace = img->mc;
94  avctx->color_trc = img->tc;
95 
96  switch (img->fmt) {
97  case AOM_IMG_FMT_I420:
98  case AOM_IMG_FMT_I42016:
99  if (img->bit_depth == 8) {
100  avctx->pix_fmt = img->monochrome ?
102  avctx->profile = FF_PROFILE_AV1_MAIN;
103  return 0;
104  } else if (img->bit_depth == 10) {
105  avctx->pix_fmt = img->monochrome ?
107  avctx->profile = FF_PROFILE_AV1_MAIN;
108  return 0;
109  } else if (img->bit_depth == 12) {
110  avctx->pix_fmt = img->monochrome ?
113  return 0;
114  } else {
115  return AVERROR_INVALIDDATA;
116  }
117  case AOM_IMG_FMT_I422:
118  case AOM_IMG_FMT_I42216:
119  if (img->bit_depth == 8) {
120  avctx->pix_fmt = AV_PIX_FMT_YUV422P;
122  return 0;
123  } else if (img->bit_depth == 10) {
124  avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
126  return 0;
127  } else if (img->bit_depth == 12) {
128  avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
130  return 0;
131  } else {
132  return AVERROR_INVALIDDATA;
133  }
134  case AOM_IMG_FMT_I444:
135  case AOM_IMG_FMT_I44416:
136  if (img->bit_depth == 8) {
137  avctx->pix_fmt = AV_PIX_FMT_YUV444P;
138  avctx->profile = FF_PROFILE_AV1_HIGH;
139  return 0;
140  } else if (img->bit_depth == 10) {
141  avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
142  avctx->profile = FF_PROFILE_AV1_HIGH;
143  return 0;
144  } else if (img->bit_depth == 12) {
145  avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
147  return 0;
148  } else {
149  return AVERROR_INVALIDDATA;
150  }
151 
152  default:
153  return AVERROR_INVALIDDATA;
154  }
155 }
156 
157 static int aom_decode(AVCodecContext *avctx, void *data, int *got_frame,
158  AVPacket *avpkt)
159 {
160  AV1DecodeContext *ctx = avctx->priv_data;
161  AVFrame *picture = data;
162  const void *iter = NULL;
163  struct aom_image *img;
164  int ret;
165 
166  if (aom_codec_decode(&ctx->decoder, avpkt->data, avpkt->size, NULL) !=
167  AOM_CODEC_OK) {
168  const char *error = aom_codec_error(&ctx->decoder);
169  const char *detail = aom_codec_error_detail(&ctx->decoder);
170 
171  av_log(avctx, AV_LOG_ERROR, "Failed to decode frame: %s\n", error);
172  if (detail)
173  av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n",
174  detail);
175  return AVERROR_INVALIDDATA;
176  }
177 
178  if ((img = aom_codec_get_frame(&ctx->decoder, &iter))) {
179  if (img->d_w > img->w || img->d_h > img->h) {
180  av_log(avctx, AV_LOG_ERROR, "Display dimensions %dx%d exceed storage %dx%d\n",
181  img->d_w, img->d_h, img->w, img->h);
182  return AVERROR_EXTERNAL;
183  }
184 
185  if ((ret = set_pix_fmt(avctx, img)) < 0) {
186  av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
187  img->fmt, img->bit_depth);
188  return ret;
189  }
190 
191  if ((int)img->d_w != avctx->width || (int)img->d_h != avctx->height) {
192  av_log(avctx, AV_LOG_INFO, "dimension change! %dx%d -> %dx%d\n",
193  avctx->width, avctx->height, img->d_w, img->d_h);
194  ret = ff_set_dimensions(avctx, img->d_w, img->d_h);
195  if (ret < 0)
196  return ret;
197  }
198  if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
199  return ret;
200  if ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) && img->bit_depth == 8)
201  image_copy_16_to_8(picture, img);
202  else
203  av_image_copy(picture->data, picture->linesize, (const uint8_t **)img->planes,
204  img->stride, avctx->pix_fmt, img->d_w, img->d_h);
205  *got_frame = 1;
206  }
207  return avpkt->size;
208 }
209 
210 static av_cold int aom_free(AVCodecContext *avctx)
211 {
212  AV1DecodeContext *ctx = avctx->priv_data;
213  aom_codec_destroy(&ctx->decoder);
214  return 0;
215 }
216 
217 static av_cold int av1_init(AVCodecContext *avctx)
218 {
219  return aom_init(avctx, &aom_codec_av1_dx_algo);
220 }
221 
223  .name = "libaom-av1",
224  .long_name = NULL_IF_CONFIG_SMALL("libaom AV1"),
225  .type = AVMEDIA_TYPE_VIDEO,
226  .id = AV_CODEC_ID_AV1,
227  .priv_data_size = sizeof(AV1DecodeContext),
228  .init = av1_init,
229  .close = aom_free,
230  .decode = aom_decode,
233  .wrapper_name = "libaom",
234 };
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2446
This structure describes decoded (raw) audio or video data.
Definition: frame.h:226
static av_cold int aom_free(AVCodecContext *avctx)
Definition: libaomdec.c:210
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int av_cpu_count(void)
Definition: cpu.c:267
static av_cold int aom_init(AVCodecContext *avctx, const struct aom_codec_iface *iface)
Definition: libaomdec.c:40
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
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:104
const char * desc
Definition: nvenc.c:65
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int aom_decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: libaomdec.c:157
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2164
int size
Definition: avcodec.h:1446
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1743
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:383
#define AV_CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:1036
#define src
Definition: vp8dsp.c:254
struct aom_codec_ctx decoder
Definition: libaomdec.c:37
int profile
profile
Definition: avcodec.h:2859
AVCodec.
Definition: avcodec.h:3424
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:360
#define img
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:361
uint8_t
#define av_cold
Definition: attributes.h:82
uint8_t * data
Definition: avcodec.h:1445
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
AVColorRange
MPEG vs JPEG YUV range.
Definition: pixfmt.h:509
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:384
#define av_log(a,...)
#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:186
const char * name
Name of the codec implementation.
Definition: avcodec.h:3431
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:382
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:387
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
#define FFMIN(a, b)
Definition: common.h:96
int width
picture width / height.
Definition: avcodec.h:1706
uint8_t w
Definition: llviddspenc.c:38
AVCodec ff_libaom_av1_decoder
Definition: libaomdec.c:222
AVFormatContext * ctx
Definition: movenc.c:48
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2143
static void error(const char *err)
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2785
the normal 2^n-1 "JPEG" YUV ranges
Definition: pixfmt.h:512
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:299
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static void image_copy_16_to_8(AVFrame *pic, struct aom_image *img)
Definition: libaomdec.c:61
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:257
const AVProfile ff_av1_profiles[]
Definition: profiles.c:142
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
main external API structure.
Definition: avcodec.h:1533
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1918
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:379
static const AVProfile profiles[]
#define FF_PROFILE_AV1_PROFESSIONAL
Definition: avcodec.h:2954
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2157
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2150
static int set_pix_fmt(AVCodecContext *avctx, struct aom_image *img)
Definition: libaomdec.c:86
#define FF_PROFILE_AV1_MAIN
Definition: avcodec.h:2952
static av_cold int av1_init(AVCodecContext *avctx)
Definition: libaomdec.c:217
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:380
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:386
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:240
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:511
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
common internal api header.
common internal and external API header
void * priv_data
Definition: avcodec.h:1560
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
This structure stores compressed data.
Definition: avcodec.h:1422
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:968
#define FF_PROFILE_AV1_HIGH
Definition: avcodec.h:2953