/* * 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/imgutils.h" #include "avcodec.h" #include "internal.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 = { /* token partitions+1 would be a decent choice */ .threads = FFMIN(avctx->thread_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; } static void image_copy_16_to_8(AVFrame *pic, struct aom_image *img) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format); int i; for (i = 0; i < desc->nb_components; i++) { int w = img->d_w; int h = img->d_h; int x, y; if (i) { w = (w + img->x_chroma_shift) >> img->x_chroma_shift; h = (h + img->y_chroma_shift) >> img->y_chroma_shift; } for (y = 0; y < h; y++) { uint16_t *src = (uint16_t *)(img->planes[i] + y * img->stride[i]); uint8_t *dst = pic->data[i] + y * pic->linesize[i]; for (x = 0; x < w; x++) *dst++ = *src++; } } } // 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 = 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->profile = FF_PROFILE_AV1_HIGH; return 0; } else if (img->bit_depth == 12) { avctx->pix_fmt = 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, void *data, int *got_frame, AVPacket *avpkt) { AV1DecodeContext *ctx = avctx->priv_data; AVFrame *picture = 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; if ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) && img->bit_depth == 8) image_copy_16_to_8(picture, img); else av_image_copy(picture->data, picture->linesize, (const uint8_t **)img->planes, img->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_algo); } AVCodec ff_libaom_av1_decoder = { .name = "libaom-av1", .long_name = NULL_IF_CONFIG_SMALL("libaom AV1"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_AV1, .priv_data_size = sizeof(AV1DecodeContext), .init = av1_init, .close = aom_free, .decode = aom_decode, .capabilities = AV_CODEC_CAP_AUTO_THREADS | AV_CODEC_CAP_DR1, .profiles = NULL_IF_CONFIG_SMALL(ff_av1_profiles), .wrapper_name = "libaom", };