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20f9727018
Up until now, codec.h contains both public and private parts of AVCodec. This exposes the internals of AVCodec to users and leads them into the temptation of actually using them and forces us to forward-declare structures and types that users can't use at all. This commit changes this by adding a new structure FFCodec to codec_internal.h that extends AVCodec, i.e. contains the public AVCodec as first member; the private fields of AVCodec are moved to this structure, leaving codec.h clean. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
266 lines
8.9 KiB
C
266 lines
8.9 KiB
C
/*
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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/cpu.h"
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#include "libavutil/imgutils.h"
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#include "avcodec.h"
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#include "codec_internal.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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#ifdef AOM_CTRL_AOMD_GET_FRAME_FLAGS
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{
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aom_codec_frame_flags_t flags;
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ret = aom_codec_control(&ctx->decoder, AOMD_GET_FRAME_FLAGS, &flags);
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if (ret == AOM_CODEC_OK) {
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picture->key_frame = !!(flags & AOM_FRAME_IS_KEY);
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if (flags & (AOM_FRAME_IS_KEY | AOM_FRAME_IS_INTRAONLY))
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picture->pict_type = AV_PICTURE_TYPE_I;
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else if (flags & AOM_FRAME_IS_SWITCH)
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picture->pict_type = AV_PICTURE_TYPE_SP;
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else
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picture->pict_type = AV_PICTURE_TYPE_P;
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}
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}
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#endif
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av_reduce(&picture->sample_aspect_ratio.num,
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&picture->sample_aspect_ratio.den,
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picture->height * img->r_w,
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picture->width * img->r_h,
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INT_MAX);
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ff_set_sar(avctx, picture->sample_aspect_ratio);
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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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const uint8_t *planes[4] = { img->planes[0], img->planes[1], img->planes[2] };
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const int stride[4] = { img->stride[0], img->stride[1], img->stride[2] };
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av_image_copy(picture->data, picture->linesize, planes,
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stride, avctx->pix_fmt, img->d_w, img->d_h);
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}
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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());
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}
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const FFCodec ff_libaom_av1_decoder = {
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.p.name = "libaom-av1",
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.p.long_name = NULL_IF_CONFIG_SMALL("libaom AV1"),
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.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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.p.capabilities = AV_CODEC_CAP_OTHER_THREADS | AV_CODEC_CAP_DR1,
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.caps_internal = FF_CODEC_CAP_AUTO_THREADS,
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.p.profiles = NULL_IF_CONFIG_SMALL(ff_av1_profiles),
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.p.wrapper_name = "libaom",
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};
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