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Mon, 14 Mar 2022 04:54:11 -0700 (PDT) Received: from localhost.localdomain ([95.168.121.22]) by smtp.gmail.com with ESMTPSA id d8-20020a170906640800b006d5853081b7sm6690060ejm.70.2022.03.14.04.54.10 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Mar 2022 04:54:11 -0700 (PDT) From: Paul B Mahol To: ffmpeg-devel@ffmpeg.org Date: Mon, 14 Mar 2022 12:56:01 +0100 Message-Id: <20220314115602.263642-1-onemda@gmail.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 1/2] avcodec: add null encoders 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: VM2iOra83JfV Content-Length: 5732 Signed-off-by: Paul B Mahol --- libavcodec/Makefile | 2 ++ libavcodec/allcodecs.c | 2 ++ libavcodec/codec_desc.c | 14 ++++++++++ libavcodec/codec_id.h | 2 ++ libavcodec/nullenc.c | 61 +++++++++++++++++++++++++++++++++++++++++ 5 files changed, 81 insertions(+) create mode 100644 libavcodec/nullenc.c diff --git a/libavcodec/Makefile b/libavcodec/Makefile index cd929da8e6..8554b5ee7d 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -542,6 +542,8 @@ OBJS-$(CONFIG_MXPEG_DECODER) += mxpegdec.o OBJS-$(CONFIG_NELLYMOSER_DECODER) += nellymoserdec.o nellymoser.o OBJS-$(CONFIG_NELLYMOSER_ENCODER) += nellymoserenc.o nellymoser.o OBJS-$(CONFIG_NOTCHLC_DECODER) += notchlc.o +OBJS-$(CONFIG_NULL_AUDIO_ENCODER) += nullenc.o +OBJS-$(CONFIG_NULL_VIDEO_ENCODER) += nullenc.o OBJS-$(CONFIG_NUV_DECODER) += nuv.o rtjpeg.o OBJS-$(CONFIG_ON2AVC_DECODER) += on2avc.o on2avcdata.o OBJS-$(CONFIG_OPUS_DECODER) += opusdec.o opus.o opus_celt.o opus_rc.o \ diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 628d27fd75..a30920bfe2 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -487,6 +487,8 @@ extern const AVCodec ff_mpc8_decoder; extern const AVCodec ff_msnsiren_decoder; extern const AVCodec ff_nellymoser_encoder; extern const AVCodec ff_nellymoser_decoder; +extern const AVCodec ff_null_audio_encoder; +extern const AVCodec ff_null_video_encoder; extern const AVCodec ff_on2avc_decoder; extern const AVCodec ff_opus_encoder; extern const AVCodec ff_opus_decoder; diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c index 81f3b3c640..7d6bfd352c 100644 --- a/libavcodec/codec_desc.c +++ b/libavcodec/codec_desc.c @@ -3516,6 +3516,20 @@ static const AVCodecDescriptor codec_descriptors[] = { .long_name = NULL_IF_CONFIG_SMALL("AVFrame to AVPacket passthrough"), .props = AV_CODEC_PROP_LOSSLESS, }, + { + .id = AV_CODEC_ID_AUDIO_NULL, + .type = AVMEDIA_TYPE_AUDIO, + .name = "null_audio", + .long_name = NULL_IF_CONFIG_SMALL("Audio NULL"), + .props = AV_CODEC_PROP_LOSSY, + }, + { + .id = AV_CODEC_ID_VIDEO_NULL, + .type = AVMEDIA_TYPE_VIDEO, + .name = "null_video", + .long_name = NULL_IF_CONFIG_SMALL("Video NULL"), + .props = AV_CODEC_PROP_LOSSY, + }, }; static int descriptor_compare(const void *key, const void *member) diff --git a/libavcodec/codec_id.h b/libavcodec/codec_id.h index 3ffb9bd22e..4822dc7685 100644 --- a/libavcodec/codec_id.h +++ b/libavcodec/codec_id.h @@ -571,6 +571,8 @@ enum AVCodecID { * stream (only used by libavformat) */ AV_CODEC_ID_FFMETADATA = 0x21000, ///< Dummy codec for streams containing only metadata information. AV_CODEC_ID_WRAPPED_AVFRAME = 0x21001, ///< Passthrough codec, AVFrames wrapped in AVPacket + AV_CODEC_ID_AUDIO_NULL = 0x21002, ///< Null audio codec + AV_CODEC_ID_VIDEO_NULL = 0x21003, ///< Null video codec }; /** diff --git a/libavcodec/nullenc.c b/libavcodec/nullenc.c new file mode 100644 index 0000000000..8d3553ed33 --- /dev/null +++ b/libavcodec/nullenc.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2022 The FFmpeg Project + * + * 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 + */ + +#include "libavutil/internal.h" +#include "libavutil/frame.h" +#include "libavutil/buffer.h" + +#include "avcodec.h" +#include "internal.h" +#include "encode.h" + +static int null_encoder(AVCodecContext *avctx, AVPacket *pkt, + const AVFrame *frame, int *got_packet) +{ + int ret; + + pkt->pts = frame->pts; + if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) + pkt->duration = ff_samples_to_time_base(avctx, frame->nb_samples); + pkt->flags |= AV_PKT_FLAG_KEY; + if ((ret = ff_alloc_packet(avctx, pkt, 1)) < 0) + return ret; + *got_packet = 1; + return 0; +} + +const AVCodec ff_null_video_encoder = { + .name = "null_video", + .long_name = NULL_IF_CONFIG_SMALL("Video NULL encoder"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_VIDEO_NULL, + .encode2 = null_encoder, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, +}; + +const AVCodec ff_null_audio_encoder = { + .name = "null_audio", + .long_name = NULL_IF_CONFIG_SMALL("Audio NULL encoder"), + .type = AVMEDIA_TYPE_AUDIO, + .id = AV_CODEC_ID_AUDIO_NULL, + .encode2 = null_encoder, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, + .capabilities = AV_CODEC_CAP_VARIABLE_FRAME_SIZE, +}; From patchwork Mon Mar 14 11:56:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul B Mahol X-Patchwork-Id: 34725 Delivered-To: andriy.gelman@gmail.com Received: by 2002:a02:cdd1:0:0:0:0:0 with SMTP id m17csp2107033jap; Mon, 14 Mar 2022 04:54:33 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwa2a7efVEmcze5/5Ri+AYDthC/mV025FYTUfAGY7YIy36+CsBG9Do+UQKgrZKTikCOshTi X-Received: by 2002:a05:6402:5193:b0:416:b3bf:23c3 with SMTP id q19-20020a056402519300b00416b3bf23c3mr18655331edd.163.1647258873478; Mon, 14 Mar 2022 04:54:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1647258873; cv=none; d=google.com; s=arc-20160816; b=KlaLDOBH2X1RpWMiAxTTWonC9sWhFnaPM9dhrvTg0D6p4e6tosA8/i6OSuEUSAT1hk wHOSfsFxAADxGGZiCqtIKjNlZZEXaR2r/XxCncCZ5rcDS4FwvPUDNuutH05Tyh6B4JbW ML3Slfna6Ffrng/L6XpfNo0H84wEEsxkuUjDakjLOFFKzBuoWjuL60fNBjrEZUCqSZ2M +5T0LiwJ070V/n6dXz1uPDgcMIsrt3bDtd+2byiyI3cjAeNHx0owBZ1OvTkMjF1TD8vm JJm+Nu6Ap/gXLPzJbfDPVHp3EqEmLTPrauTiofcvGh42Y6ve8AfCmLcy0zFufWjqJHg+ q9gA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding: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=hCdVoiwvyfCJyqVuS8jegDfoNKU2vy1ec+qEhkTHpp8=; b=F+RiUYqCKNJbhQgBh5ivQTBWSViAdvNTPgmrwz9WuyB9Y7EyN/M2aLfTns1ufL57/S 4XLOSgdSZwJRXk1KyNY79KCD4DXjI6TwVbVLqtq1JcuklCxPn09qPI482PXM5wpPM7I7 /Ny9hgdyXSbagpL1lqpQ37ZtoSjxtP++1EBkh/Dbxq2+VZymp8kzcbUYzoueTaf5uTF7 gAcwPH3vXXidw1UPm3+UVATu+hhHVVFOKdjRXjwOVwN8v51waFmCCygC/6Q66VZPnWA6 0CjTFBwz7zZ5lv4Zre+ujgy89nyN/DoZDhtlpmeY5l9FxSlNRpJ2s+JauSqU3FiOjsdb Tzqw== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20210112 header.b="WfDxXXQ/"; 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. 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