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/*
* 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 = avctx->colorspace == AVCOL_SPC_RGB ?
AV_PIX_FMT_GBRP : 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->pix_fmt = avctx->colorspace == AVCOL_SPC_RGB ?
AV_PIX_FMT_GBRP10 : AV_PIX_FMT_YUV444P10;
avctx->profile = FF_PROFILE_AV1_HIGH;
return 0;
} else if (img->bit_depth == 12) {
avctx->pix_fmt = avctx->colorspace == AVCOL_SPC_RGB ?
AV_PIX_FMT_GBRP12 : 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) {
if (flags & AOM_FRAME_IS_KEY)
picture->flags |= AV_FRAME_FLAG_KEY;
else
picture->flags &= ~AV_FRAME_FLAG_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",
};
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