| /* |
| * 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 = { |
| .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; |
| } |
| |
| 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; |
| |
| 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) |
| 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", |
| }; |