early-access version 1432
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pineappleEA
234
externals/ffmpeg/libavcodec/libaomdec.c
vendored
Executable file
234
externals/ffmpeg/libavcodec/libaomdec.c
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/*
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* Copyright (c) 2010, Google, Inc.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* AV1 decoder support via libaom
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*/
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#include <aom/aom_decoder.h>
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#include <aom/aomdx.h>
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#include "libavutil/common.h"
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#include "libavutil/imgutils.h"
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#include "avcodec.h"
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#include "internal.h"
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#include "profiles.h"
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typedef struct AV1DecodeContext {
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struct aom_codec_ctx decoder;
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} AV1DecodeContext;
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static av_cold int aom_init(AVCodecContext *avctx,
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const struct aom_codec_iface *iface)
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{
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AV1DecodeContext *ctx = avctx->priv_data;
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struct aom_codec_dec_cfg deccfg = {
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.threads = FFMIN(avctx->thread_count ? avctx->thread_count : av_cpu_count(), 16)
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};
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av_log(avctx, AV_LOG_INFO, "%s\n", aom_codec_version_str());
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av_log(avctx, AV_LOG_VERBOSE, "%s\n", aom_codec_build_config());
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if (aom_codec_dec_init(&ctx->decoder, iface, &deccfg, 0) != AOM_CODEC_OK) {
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const char *error = aom_codec_error(&ctx->decoder);
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av_log(avctx, AV_LOG_ERROR, "Failed to initialize decoder: %s\n",
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error);
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return AVERROR(EINVAL);
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}
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return 0;
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}
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static void image_copy_16_to_8(AVFrame *pic, struct aom_image *img)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
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int i;
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for (i = 0; i < desc->nb_components; i++) {
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int w = img->d_w;
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int h = img->d_h;
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int x, y;
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if (i) {
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w = (w + img->x_chroma_shift) >> img->x_chroma_shift;
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h = (h + img->y_chroma_shift) >> img->y_chroma_shift;
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}
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for (y = 0; y < h; y++) {
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uint16_t *src = (uint16_t *)(img->planes[i] + y * img->stride[i]);
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uint8_t *dst = pic->data[i] + y * pic->linesize[i];
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for (x = 0; x < w; x++)
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*dst++ = *src++;
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}
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}
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}
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// returns 0 on success, AVERROR_INVALIDDATA otherwise
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static int set_pix_fmt(AVCodecContext *avctx, struct aom_image *img)
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{
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static const enum AVColorRange color_ranges[] = {
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AVCOL_RANGE_MPEG, AVCOL_RANGE_JPEG
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};
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avctx->color_range = color_ranges[img->range];
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avctx->color_primaries = img->cp;
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avctx->colorspace = img->mc;
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avctx->color_trc = img->tc;
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switch (img->fmt) {
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case AOM_IMG_FMT_I420:
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case AOM_IMG_FMT_I42016:
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if (img->bit_depth == 8) {
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avctx->pix_fmt = img->monochrome ?
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AV_PIX_FMT_GRAY8 : AV_PIX_FMT_YUV420P;
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avctx->profile = FF_PROFILE_AV1_MAIN;
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return 0;
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} else if (img->bit_depth == 10) {
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avctx->pix_fmt = img->monochrome ?
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AV_PIX_FMT_GRAY10 : AV_PIX_FMT_YUV420P10;
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avctx->profile = FF_PROFILE_AV1_MAIN;
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return 0;
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} else if (img->bit_depth == 12) {
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avctx->pix_fmt = img->monochrome ?
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AV_PIX_FMT_GRAY12 : AV_PIX_FMT_YUV420P12;
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avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
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return 0;
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} else {
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return AVERROR_INVALIDDATA;
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}
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case AOM_IMG_FMT_I422:
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case AOM_IMG_FMT_I42216:
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if (img->bit_depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_YUV422P;
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avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
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return 0;
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} else if (img->bit_depth == 10) {
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avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
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avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
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return 0;
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} else if (img->bit_depth == 12) {
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avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
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avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
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return 0;
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} else {
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return AVERROR_INVALIDDATA;
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}
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case AOM_IMG_FMT_I444:
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case AOM_IMG_FMT_I44416:
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if (img->bit_depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_YUV444P;
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avctx->profile = FF_PROFILE_AV1_HIGH;
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return 0;
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} else if (img->bit_depth == 10) {
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avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
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avctx->profile = FF_PROFILE_AV1_HIGH;
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return 0;
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} else if (img->bit_depth == 12) {
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avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
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avctx->profile = FF_PROFILE_AV1_PROFESSIONAL;
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return 0;
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} else {
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return AVERROR_INVALIDDATA;
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}
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default:
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return AVERROR_INVALIDDATA;
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}
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}
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static int aom_decode(AVCodecContext *avctx, void *data, int *got_frame,
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AVPacket *avpkt)
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{
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AV1DecodeContext *ctx = avctx->priv_data;
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AVFrame *picture = data;
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const void *iter = NULL;
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struct aom_image *img;
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int ret;
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if (aom_codec_decode(&ctx->decoder, avpkt->data, avpkt->size, NULL) !=
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AOM_CODEC_OK) {
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const char *error = aom_codec_error(&ctx->decoder);
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const char *detail = aom_codec_error_detail(&ctx->decoder);
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av_log(avctx, AV_LOG_ERROR, "Failed to decode frame: %s\n", error);
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if (detail)
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av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n",
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detail);
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return AVERROR_INVALIDDATA;
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}
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if ((img = aom_codec_get_frame(&ctx->decoder, &iter))) {
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if (img->d_w > img->w || img->d_h > img->h) {
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av_log(avctx, AV_LOG_ERROR, "Display dimensions %dx%d exceed storage %dx%d\n",
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img->d_w, img->d_h, img->w, img->h);
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return AVERROR_EXTERNAL;
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}
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if ((ret = set_pix_fmt(avctx, img)) < 0) {
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av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
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img->fmt, img->bit_depth);
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return ret;
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}
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if ((int)img->d_w != avctx->width || (int)img->d_h != avctx->height) {
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av_log(avctx, AV_LOG_INFO, "dimension change! %dx%d -> %dx%d\n",
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avctx->width, avctx->height, img->d_w, img->d_h);
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ret = ff_set_dimensions(avctx, img->d_w, img->d_h);
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if (ret < 0)
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return ret;
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}
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if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
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return ret;
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if ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) && img->bit_depth == 8)
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image_copy_16_to_8(picture, img);
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else
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av_image_copy(picture->data, picture->linesize, (const uint8_t **)img->planes,
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img->stride, avctx->pix_fmt, img->d_w, img->d_h);
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*got_frame = 1;
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}
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return avpkt->size;
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}
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static av_cold int aom_free(AVCodecContext *avctx)
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{
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AV1DecodeContext *ctx = avctx->priv_data;
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aom_codec_destroy(&ctx->decoder);
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return 0;
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}
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static av_cold int av1_init(AVCodecContext *avctx)
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{
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return aom_init(avctx, &aom_codec_av1_dx_algo);
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}
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AVCodec ff_libaom_av1_decoder = {
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.name = "libaom-av1",
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.long_name = NULL_IF_CONFIG_SMALL("libaom AV1"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_AV1,
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.priv_data_size = sizeof(AV1DecodeContext),
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.init = av1_init,
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.close = aom_free,
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.decode = aom_decode,
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.capabilities = AV_CODEC_CAP_AUTO_THREADS | AV_CODEC_CAP_DR1,
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.profiles = NULL_IF_CONFIG_SMALL(ff_av1_profiles),
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.wrapper_name = "libaom",
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};
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