From patchwork Sat Mar 19 17:26:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Leo Izen X-Patchwork-Id: 34853 Delivered-To: ffmpegpatchwork2@gmail.com Received: by 2002:a05:6838:ed11:0:0:0:0 with SMTP id hi17csp380308nkc; Sat, 19 Mar 2022 10:27:48 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwL551rlc+rBpdoQ+Ks7KrZl4Ym88rnFNAj580eM5Cq7Z1plknUM6OCFUhizmzzAAFv3teP X-Received: by 2002:a05:6402:5250:b0:419:2902:2833 with SMTP id t16-20020a056402525000b0041929022833mr2096440edd.153.1647710868800; Sat, 19 Mar 2022 10:27:48 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1647710868; cv=none; d=google.com; s=arc-20160816; b=H8/UYMnIA4DWOmbg57MwTxfFF3pPewztGHWQs28OnoCkwvghcLeuU6TmBwc8M0KSX7 XKnyr7QRmwXoMxtz5j2/6iYNFAuQHFi1UAVMJIQZdBDYg0hlZjD+acDoKRMZWlrVuF8G NMd7gAh2KkSR0MNBD/48gBzgTtbXGROUG1URe/EI+ODFkNKu240KwMo1Tp+Db3q6I4PV RG9Dk78hWum6cKLznh/SGL/LFHZ11sk9KWs9aM4yfNL9rWRPoBe+r4docC+02e8+8l5z aP0D/YJs5sH1u5fuHazEZPGrj+DQ4x/TyOIYc9RYqPv3pjcLjDNQpelYD/2a7fIKmQfz RtWw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:cc:reply-to :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:mime-version:references:in-reply-to :message-id:date:to:from:dkim-signature:delivered-to; bh=livoO6c38ThTPvsg6hxxoDdaukUzmflZuNs8sGahvyA=; b=C31Be3wPo1CSNSx6GmcRUX4Fg7KQgRrzXh6cRl2G2qTd0i7g/EI3D6ewK1KKN6eFUR oRYliKrRDcOmkS2Te1Mt0kwOcQ8PNQnJ4URwv3ToFazxsWXevzSSUoqb6xYdzCCEEGyt or1AdlY6AjzaqorsuL4Deoey314MOWFEeClEJZ4kmcgkfCQ69jdVN/8eGMXBzJ7gZJYB ic0fEXiaTZXovytufWdNPEWP9pfs0u9MoDf8USAX3LrUcRyTAioXP/Dz7Z0QBACufnic 2UyoqZBSUPrOx69UrUmqbUiXV0O2ftDMmRuJo49SN8XYbgBD6TJSYlHshCYqeZ3h5o6y pbuQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20210112 header.b="pY/PmVQn"; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id 27-20020a50875b000000b00418c2b5be56si5673416edv.312.2022.03.19.10.27.48; Sat, 19 Mar 2022 10:27:48 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20210112 header.b="pY/PmVQn"; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 3197B68B08A; Sat, 19 Mar 2022 19:27:33 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-qt1-f182.google.com (mail-qt1-f182.google.com [209.85.160.182]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 4F5DD68AF21 for ; Sat, 19 Mar 2022 19:27:26 +0200 (EET) Received: by mail-qt1-f182.google.com with SMTP id c4so9153850qtx.1 for ; Sat, 19 Mar 2022 10:27:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=o1Rh61g/g5xwFE8CDw3dRMBxGIX6bZvC7Mdc5+jSowI=; b=pY/PmVQnSE6xdDjWIkQX+h3lA1zh+lP6lntuokxEpZbBHVALvrxUtXSGkuXBrZ7c/k sGlotRqpegKsfwsMCds9YPi2hTnTQdF70c5tmPZF6bA5LrHKjdSa40OICSqK94acHzL7 MgHDfOtGFaaXyuiXIsX6rmAfwf3EFf+72C8ftEveVNSe+IZq00fM5aBjh9zYz5Pnudv2 q4wghKXP7hrmgK7wkzQ60/TWJhM0V78q1q7DE9p9cIt+JLMNyE68iLyI998G9s6fwns8 x5uz7cBJKJPCXJSxD7Z2ISTrgwEupN0muWBqfhnU5dui88bH3TVqliGex2ZTtZtZmcNT 2lXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=o1Rh61g/g5xwFE8CDw3dRMBxGIX6bZvC7Mdc5+jSowI=; b=7bvlVFM65MtfxncsvCgajCtadDVAbLKCVGQAkKtb3U6T1RVe8AZpCgRvouGonT3/In yp92mRxCy/vwfIX9PcdthcJXiFcRiYQDvFoeEIiPYtzdQTY8hz/F2zcN/5LrS6fe7/xS DKLDpflh4d5uxSW3CLMlododrnws1Iq3DLQW1LdeGSAMMof3Df8L6rMdUavVq8E4D6Fd mFZAYzUC4Rj47SQmtbMNfwa46Is1W1aI5Rt9L8Z1K3nclzVmllpj89zC96AEQzPfS0sm h6SyURblp8SQ3M7f0XbpvifGp/I26iQMN5k+RmUJwT/XQBnAy0jIUA7PU2igaLo8TwxA VmGw== X-Gm-Message-State: AOAM532Zc4xMol7HfWJIWNdZ0sDA065p5By1MrioaT0fCAksqwsM9CS+ xc2YxqNZQe2nFqjyGiiujgK6pKqQpV0= X-Received: by 2002:a05:622a:1a9c:b0:2e1:e23b:2374 with SMTP id s28-20020a05622a1a9c00b002e1e23b2374mr11251939qtc.447.1647710844760; Sat, 19 Mar 2022 10:27:24 -0700 (PDT) Received: from gauss.local (c-68-41-54-207.hsd1.mi.comcast.net. [68.41.54.207]) by smtp.gmail.com with ESMTPSA id q28-20020a05620a039c00b006494cbf8f5asm5302402qkm.22.2022.03.19.10.27.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Mar 2022 10:27:24 -0700 (PDT) From: Leo Izen To: ffmpeg-devel@ffmpeg.org Date: Sat, 19 Mar 2022 13:26:42 -0400 Message-Id: <20220319172645.82718-2-leo.izen@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220319172645.82718-1-leo.izen@gmail.com> References: <20220319172645.82718-1-leo.izen@gmail.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v7 2/5] avcodec/libjxl: add Jpeg XL decoding via libjxl X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Leo Izen Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: 8jm38GM7p8X6 This commit adds decoding support to libavcodec for Jpeg XL images via the external library libjxl. --- MAINTAINERS | 1 + configure | 5 + doc/general_contents.texi | 7 + libavcodec/Makefile | 1 + libavcodec/allcodecs.c | 1 + libavcodec/libjxl.c | 70 +++++++++ libavcodec/libjxl.h | 48 ++++++ libavcodec/libjxldec.c | 301 ++++++++++++++++++++++++++++++++++++++ 8 files changed, 434 insertions(+) create mode 100644 libavcodec/libjxl.c create mode 100644 libavcodec/libjxl.h create mode 100644 libavcodec/libjxldec.c diff --git a/MAINTAINERS b/MAINTAINERS index 2e0de9e224..875d25ca89 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -195,6 +195,7 @@ Codecs: libcodec2.c Tomas Härdin libdirac* David Conrad libdavs2.c Huiwen Ren + libjxl*.c, libjxl.h Leo Izen libgsm.c Michel Bardiaux libkvazaar.c Arttu Ylä-Outinen libopenh264enc.c Martin Storsjo, Linjie Fu diff --git a/configure b/configure index c43d1bb2e7..a88de8ca9c 100755 --- a/configure +++ b/configure @@ -240,6 +240,7 @@ External library support: --enable-libiec61883 enable iec61883 via libiec61883 [no] --enable-libilbc enable iLBC de/encoding via libilbc [no] --enable-libjack enable JACK audio sound server [no] + --enable-libjxl enable JPEG XL decoding via libjxl [no] --enable-libklvanc enable Kernel Labs VANC processing [no] --enable-libkvazaar enable HEVC encoding via libkvazaar [no] --enable-liblensfun enable lensfun lens correction [no] @@ -1833,6 +1834,7 @@ EXTERNAL_LIBRARY_LIST=" libiec61883 libilbc libjack + libjxl libklvanc libkvazaar libmodplug @@ -3329,6 +3331,7 @@ libgsm_ms_decoder_deps="libgsm" libgsm_ms_encoder_deps="libgsm" libilbc_decoder_deps="libilbc" libilbc_encoder_deps="libilbc" +libjxl_decoder_deps="libjxl libjxl_threads" libkvazaar_encoder_deps="libkvazaar" libmodplug_demuxer_deps="libmodplug" libmp3lame_encoder_deps="libmp3lame" @@ -6541,6 +6544,8 @@ enabled libgsm && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break; done || die "ERROR: libgsm not found"; } enabled libilbc && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs +enabled libjxl && require_pkg_config libjxl "libjxl >= 0.7.0" jxl/decode.h JxlDecoderVersion && + require_pkg_config libjxl_threads "libjxl_threads >= 0.7.0" jxl/thread_parallel_runner.h JxlThreadParallelRunner enabled libklvanc && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc enabled libkvazaar && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get enabled liblensfun && require_pkg_config liblensfun lensfun lensfun.h lf_db_new diff --git a/doc/general_contents.texi b/doc/general_contents.texi index fcd9da1b34..a893347fbe 100644 --- a/doc/general_contents.texi +++ b/doc/general_contents.texi @@ -171,6 +171,13 @@ Go to @url{https://github.com/TimothyGu/libilbc} and follow the instructions for installing the library. Then pass @code{--enable-libilbc} to configure to enable it. +@section libjxl + +JPEG XL is an image format intended to fully replace legacy JPEG for an extended +period of life. See @url{https://jpegxl.info/} for more information, and see +@url{https://github.com/libjxl/libjxl} for the library source. You can pass +@code{--enable-libjxl} to configure in order enable the libjxl wrapper. + @section libvpx FFmpeg can make use of the libvpx library for VP8/VP9 decoding and encoding. diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 3c40c419cd..572e31e647 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -1059,6 +1059,7 @@ OBJS-$(CONFIG_LIBGSM_MS_DECODER) += libgsmdec.o OBJS-$(CONFIG_LIBGSM_MS_ENCODER) += libgsmenc.o OBJS-$(CONFIG_LIBILBC_DECODER) += libilbc.o OBJS-$(CONFIG_LIBILBC_ENCODER) += libilbc.o +OBJS-$(CONFIG_LIBJXL_DECODER) += libjxldec.o libjxl.o OBJS-$(CONFIG_LIBKVAZAAR_ENCODER) += libkvazaar.o OBJS-$(CONFIG_LIBMP3LAME_ENCODER) += libmp3lame.o OBJS-$(CONFIG_LIBOPENCORE_AMRNB_DECODER) += libopencore-amr.o diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 74049afa8f..7d1eb0e22c 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -748,6 +748,7 @@ extern const AVCodec ff_libgsm_ms_encoder; extern const AVCodec ff_libgsm_ms_decoder; extern const AVCodec ff_libilbc_encoder; extern const AVCodec ff_libilbc_decoder; +extern const AVCodec ff_libjxl_decoder; extern const AVCodec ff_libmp3lame_encoder; extern const AVCodec ff_libopencore_amrnb_encoder; extern const AVCodec ff_libopencore_amrnb_decoder; diff --git a/libavcodec/libjxl.c b/libavcodec/libjxl.c new file mode 100644 index 0000000000..204d91d8a8 --- /dev/null +++ b/libavcodec/libjxl.c @@ -0,0 +1,70 @@ +/* + * JPEG XL de/encoding via libjxl, common support implementation + * Copyright (c) 2021 Leo Izen + * + * 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 + * JPEG XL via libjxl common support implementation + */ + +#include "libavutil/cpu.h" +#include "libavutil/mem.h" + +#include +#include "libjxl.h" + +size_t ff_libjxl_get_threadcount(int threads) +{ + if (threads <= 0) + return av_cpu_count(); + if (threads == 1) + return 0; + return threads; +} + +/** + * Wrapper around av_malloc used as a jpegxl_alloc_func. + * + * @param opaque opaque pointer for jpegxl_alloc_func, always ignored + * @param size Size in bytes for the memory block to be allocated + * @return Pointer to the allocated block, or `NULL` if it cannot be allocated + */ +static void *libjxl_av_malloc(void *opaque, size_t size) +{ + return av_malloc(size); +} + +/** + * Wrapper around av_free used as a jpegxl_free_func. + * + * @param opaque opaque pointer for jpegxl_free_func, always ignored + * @param address Pointer to the allocated block, to free. `NULL` permitted as a no-op. + */ +static void libjxl_av_free(void *opaque, void *address) +{ + av_free(address); +} + +void ff_libjxl_init_memory_manager(JxlMemoryManager *manager) +{ + manager->opaque = NULL; + manager->alloc = &libjxl_av_malloc; + manager->free = &libjxl_av_free; +} diff --git a/libavcodec/libjxl.h b/libavcodec/libjxl.h new file mode 100644 index 0000000000..5387c438fd --- /dev/null +++ b/libavcodec/libjxl.h @@ -0,0 +1,48 @@ +/* + * JPEG XL de/encoding via libjxl, common support header + * Copyright (c) 2021 Leo Izen + * + * 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 + * JPEG XL via libjxl common support header + */ + +#ifndef AVCODEC_LIBJXL_H +#define AVCODEC_LIBJXL_H + +#include + +/** + * Transform threadcount in ffmpeg to one used by libjxl. + * + * @param threads ffmpeg's threads AVOption + * @return thread count for libjxl's parallel runner + */ +size_t ff_libjxl_get_threadcount(int threads); + +/** + * Initialize and populate a JxlMemoryManager + * with av_malloc() and av_free() so libjxl will use these + * functions. + * @param manager a pointer to a JxlMemoryManager struct + */ +void ff_libjxl_init_memory_manager(JxlMemoryManager *manager); + +#endif /* AVCODEC_LIBJXL_H */ diff --git a/libavcodec/libjxldec.c b/libavcodec/libjxldec.c new file mode 100644 index 0000000000..c224c513f6 --- /dev/null +++ b/libavcodec/libjxldec.c @@ -0,0 +1,301 @@ +/* + * JPEG XL decoding support via libjxl + * Copyright (c) 2021 Leo Izen + * + * 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 + * JPEG XL decoder using libjxl + */ + +#include "libavutil/avassert.h" +#include "libavutil/common.h" +#include "libavutil/error.h" +#include "libavutil/mem.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "libavutil/pixfmt.h" +#include "libavutil/frame.h" +#include "libavutil/version.h" + +#include "avcodec.h" +#include "internal.h" + +#include +#include +#include "libjxl.h" + +typedef struct LibJxlDecodeContext { + void *runner; + JxlDecoder *decoder; + JxlBasicInfo basic_info; + JxlPixelFormat jxl_pixfmt; + JxlDecoderStatus events; + uint8_t *iccp; + size_t iccp_len; +} LibJxlDecodeContext; + +static int libjxl_init_jxl_decoder(AVCodecContext *avctx) +{ + LibJxlDecodeContext *ctx = avctx->priv_data; + + ctx->events = JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE | JXL_DEC_FRAME | JXL_DEC_COLOR_ENCODING; + if (JxlDecoderSubscribeEvents(ctx->decoder, ctx->events) != JXL_DEC_SUCCESS) { + av_log(avctx, AV_LOG_ERROR, "Error subscribing to JXL events\n"); + return AVERROR_EXTERNAL; + } + + if (JxlDecoderSetParallelRunner(ctx->decoder, JxlThreadParallelRunner, ctx->runner) != JXL_DEC_SUCCESS) { + av_log(avctx, AV_LOG_ERROR, "Failed to set JxlThreadParallelRunner\n"); + return AVERROR_EXTERNAL; + } + + memset(&ctx->basic_info, 0, sizeof(JxlBasicInfo)); + memset(&ctx->jxl_pixfmt, 0, sizeof(JxlPixelFormat)); + return 0; +} + +static av_cold int libjxl_decode_init(AVCodecContext *avctx) +{ + LibJxlDecodeContext *ctx = avctx->priv_data; + JxlMemoryManager manager; + + ff_libjxl_init_memory_manager(&manager); + ctx->decoder = JxlDecoderCreate(&manager); + if (!ctx->decoder) { + av_log(avctx, AV_LOG_ERROR, "Failed to create JxlDecoder\n"); + return AVERROR_EXTERNAL; + } + + ctx->runner = JxlThreadParallelRunnerCreate(&manager, ff_libjxl_get_threadcount(avctx->thread_count)); + if (!ctx->runner) { + av_log(avctx, AV_LOG_ERROR, "Failed to create JxlThreadParallelRunner\n"); + return AVERROR_EXTERNAL; + } + + return libjxl_init_jxl_decoder(avctx); +} + +static enum AVPixelFormat libjxl_get_pix_fmt(AVCodecContext *avctx, JxlBasicInfo *basic_info, JxlPixelFormat *format) +{ + format->endianness = JXL_LITTLE_ENDIAN; + format->num_channels = basic_info->num_color_channels + (basic_info->alpha_bits > 0); + /* av_malloc handles alignment already */ + format->align = 1; + /* Gray */ + if (basic_info->num_color_channels == 1) { + if (basic_info->bits_per_sample <= 8) { + format->data_type = JXL_TYPE_UINT8; + return basic_info->alpha_bits ? AV_PIX_FMT_YA8 : AV_PIX_FMT_GRAY8; + } + if (basic_info->exponent_bits_per_sample || basic_info->bits_per_sample > 16) { + if (basic_info->alpha_bits) + return AV_PIX_FMT_NONE; + format->data_type = JXL_TYPE_FLOAT; + return AV_PIX_FMT_GRAYF32LE; + } + format->data_type = JXL_TYPE_UINT16; + return basic_info->alpha_bits ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_GRAY16LE; + } + /* rgb only */ + /* libjxl only supports packed RGB and gray output at the moment */ + if (basic_info->num_color_channels == 3) { + if (basic_info->bits_per_sample <= 8) { + format->data_type = JXL_TYPE_UINT8; + return basic_info->alpha_bits ? AV_PIX_FMT_RGBA : AV_PIX_FMT_RGB24; + } + if (basic_info->bits_per_sample > 16) + av_log(avctx, AV_LOG_WARNING, "Downsampling larger integer to 16-bit via libjxl\n"); + if (basic_info->exponent_bits_per_sample) + av_log(avctx, AV_LOG_WARNING, "Downsampling float to 16-bit integer via libjxl\n"); + format->data_type = JXL_TYPE_UINT16; + return basic_info->alpha_bits ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGB48LE; + } + return AV_PIX_FMT_NONE; +} + +static void libjxl_row_fill(void *avframe, size_t x, size_t y, size_t num_pixels, const void *pixels) +{ + AVFrame *frame = avframe; + int bytes = av_get_padded_bits_per_pixel(av_pix_fmt_desc_get(frame->format)) / 8; + size_t offset = y * frame->linesize[0] + x * bytes; + memcpy(frame->data[0] + offset, pixels, num_pixels * bytes); +} + +static int libjxl_decode_frame(AVCodecContext *avctx, void *avframe, int *got_frame, AVPacket *avpkt) +{ + LibJxlDecodeContext *ctx = avctx->priv_data; + uint8_t *buf = avpkt->data; + size_t remaining = avpkt->size; + AVFrame *frame = avframe; + JxlDecoderStatus status; + int ff_status; + *got_frame = 0; + + for (;;) { + /* + * it only returns JXL_DEC_ERROR here if the input + * was not released since the last time this was called + * if this happens, it's a programmer error + */ + status = JxlDecoderSetInput(ctx->decoder, buf, remaining); + av_assert0(status != JXL_DEC_ERROR); + + status = JxlDecoderProcessInput(ctx->decoder); + /* + * JxlDecoderReleaseInput returns the number + * of bytes remaining to be read, rather than + * the number of bytes that it did read + */ + remaining = JxlDecoderReleaseInput(ctx->decoder); + buf = avpkt->data + avpkt->size - remaining; + + switch(status) { + case JXL_DEC_ERROR: + av_log(avctx, AV_LOG_ERROR, "Unknown libjxl decode error\n"); + return AVERROR_EXTERNAL; + case JXL_DEC_NEED_MORE_INPUT: + if (remaining == 0) { + av_log(avctx, AV_LOG_WARNING, "Unexpected end of JXL codestream\n"); + return AVERROR(EAGAIN); + } + av_log(avctx, AV_LOG_DEBUG, "NEED_MORE_INPUT event emitted\n"); + continue; + case JXL_DEC_BASIC_INFO: + av_log(avctx, AV_LOG_DEBUG, "BASIC_INFO event emitted\n"); + if (JxlDecoderGetBasicInfo(ctx->decoder, &ctx->basic_info) != JXL_DEC_SUCCESS) { + /* + * this should never happen + * if it does it is likely a libjxl decoder bug + */ + av_log(avctx, AV_LOG_ERROR, "Bad libjxl basic info event\n"); + return AVERROR_EXTERNAL; + } + avctx->pix_fmt = libjxl_get_pix_fmt(avctx, &ctx->basic_info, &ctx->jxl_pixfmt); + if (avctx->pix_fmt == AV_PIX_FMT_NONE) { + av_log(avctx, AV_LOG_ERROR, "Bad libjxl pixel format\n"); + return AVERROR_EXTERNAL; + } + ff_status = ff_set_dimensions(avctx, ctx->basic_info.xsize, ctx->basic_info.ysize); + if (ff_status < 0) + return ff_status; + /* + * We rewind the decoder and ask for everything again + * This futureproofs the decoder since it will make + * adding a parser or a dedicated demuxer much easier + */ + buf = avpkt->data; + remaining = avpkt->size; + JxlDecoderRewind(ctx->decoder); + ctx->events &= ~JXL_DEC_BASIC_INFO; + if (JxlDecoderSubscribeEvents(ctx->decoder, ctx->events) != JXL_DEC_SUCCESS) { + av_log(avctx, AV_LOG_ERROR, "Error subscribing to JXL events after rewind\n"); + return AVERROR_EXTERNAL; + } + continue; + case JXL_DEC_COLOR_ENCODING: + av_log(avctx, AV_LOG_DEBUG, "COLOR_ENCODING event emitted\n"); + status = JxlDecoderGetICCProfileSize(ctx->decoder, &ctx->jxl_pixfmt, JXL_COLOR_PROFILE_TARGET_ORIGINAL, &ctx->iccp_len); + if (status == JXL_DEC_SUCCESS && ctx->iccp_len > 0) { + if (ctx->iccp) + av_freep(&ctx->iccp); + ctx->iccp = av_malloc(ctx->iccp_len); + if (!ctx->iccp) + return AVERROR(ENOMEM); + status = JxlDecoderGetColorAsICCProfile(ctx->decoder, &ctx->jxl_pixfmt, JXL_COLOR_PROFILE_TARGET_ORIGINAL, ctx->iccp, ctx->iccp_len); + if (status != JXL_DEC_SUCCESS) + av_freep(&ctx->iccp); + } + continue; + case JXL_DEC_FRAME: + case JXL_DEC_NEED_IMAGE_OUT_BUFFER: + /* + * We don't do this at basic info time + * because it will happen again when we + * rewind anyway + */ + av_log(avctx, AV_LOG_DEBUG, "%s event emitted\n", status == JXL_DEC_FRAME ? "FRAME" : "NEED_IMAGE_OUT_BUFFER"); + ff_status = ff_get_buffer(avctx, frame, 0); + if (ff_status < 0) + return ff_status; + if (JxlDecoderSetImageOutCallback(ctx->decoder, &ctx->jxl_pixfmt, &libjxl_row_fill, frame) != JXL_DEC_SUCCESS) { + av_log(avctx, AV_LOG_ERROR, "Bad libjxl dec need image out buffer event\n"); + return AVERROR_EXTERNAL; + } + continue; + case JXL_DEC_FULL_IMAGE: + /* full image is one frame, even if animated */ + av_log(avctx, AV_LOG_DEBUG, "FULL_IMAGE event emitted\n"); + *got_frame = 1; + frame->pict_type = AV_PICTURE_TYPE_I; + frame->key_frame = 1; + if (ctx->iccp) { + AVFrameSideData *sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, ctx->iccp_len); + if (!sd) + return AVERROR(ENOMEM); + memcpy(sd->data, ctx->iccp, ctx->iccp_len); + av_dict_set(&sd->metadata, "name", "", 0); + } + return avpkt->size - remaining; + case JXL_DEC_SUCCESS: + av_log(avctx, AV_LOG_DEBUG, "SUCCESS event emitted\n"); + /* + * The file has finished decoding + * reset the decoder to let us + * reuse it again for the next image + */ + JxlDecoderReset(ctx->decoder); + libjxl_init_jxl_decoder(avctx); + buf = avpkt->data; + remaining = avpkt->size; + continue; + default: + av_log(avctx, AV_LOG_ERROR, "Bad libjxl event: %d\n", status); + return AVERROR_EXTERNAL; + } + } +} + +static av_cold int libjxl_decode_close(AVCodecContext *avctx) +{ + LibJxlDecodeContext *ctx = avctx->priv_data; + if (ctx->runner) + JxlThreadParallelRunnerDestroy(ctx->runner); + ctx->runner = NULL; + if (ctx->decoder) + JxlDecoderDestroy(ctx->decoder); + ctx->decoder = NULL; + if (ctx->iccp) + av_freep(&ctx->iccp); + return 0; +} + +const AVCodec ff_libjxl_decoder = { + .name = "libjxl", + .long_name = NULL_IF_CONFIG_SMALL("libjxl JPEG XL decoder"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_JPEGXL, + .priv_data_size = sizeof(LibJxlDecodeContext), + .init = libjxl_decode_init, + .decode = libjxl_decode_frame, + .close = libjxl_decode_close, + .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_OTHER_THREADS, + .caps_internal = FF_CODEC_CAP_AUTO_THREADS | FF_CODEC_CAP_INIT_CLEANUP, + .wrapper_name = "libjxl", +};