From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 3AA2D42A86 for ; Tue, 11 Jan 2022 10:01:49 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 5FD0A68A89C; Tue, 11 Jan 2022 11:59:25 +0200 (EET) Received: from mail0.khirnov.net (red.khirnov.net [176.97.15.12]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id ACD1568AF50 for ; Tue, 11 Jan 2022 11:59:14 +0200 (EET) Received: from localhost (localhost [IPv6:::1]) by mail0.khirnov.net (Postfix) with ESMTP id EAE302405F5 for ; Tue, 11 Jan 2022 10:59:11 +0100 (CET) Received: from mail0.khirnov.net ([IPv6:::1]) by localhost (mail0.khirnov.net [IPv6:::1]) (amavisd-new, port 10024) with ESMTP id 1x2h9bqDdSrV for ; Tue, 11 Jan 2022 10:59:11 +0100 (CET) Received: from libav.khirnov.net (libav.khirnov.net [IPv6:2a00:c500:561:201::7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "libav.khirnov.net", Issuer "smtp.khirnov.net SMTP CA" (verified OK)) by mail0.khirnov.net (Postfix) with ESMTPS id E97D5240688 for ; Tue, 11 Jan 2022 10:59:02 +0100 (CET) Received: by libav.khirnov.net (Postfix, from userid 1000) id 1D04F3A0B4A; Tue, 11 Jan 2022 10:59:02 +0100 (CET) From: Anton Khirnov To: ffmpeg-devel@ffmpeg.org Date: Tue, 11 Jan 2022 10:58:19 +0100 Message-Id: <20220111095830.31542-17-anton@khirnov.net> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20220111095830.31542-1-anton@khirnov.net> References: <20220111095830.31542-1-anton@khirnov.net> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 17/28] ffmpeg: move the mux queue into muxer private data 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: The muxing queue currently lives in OutputStream, which is a very large struct storing the state for both encoding and muxing. The muxing queue is only used by the code in ffmpeg_mux, so it makes sense to restrict it to that file. This makes the first step towards reducing the scope of OutputStream. --- fftools/ffmpeg.c | 9 ----- fftools/ffmpeg.h | 9 ----- fftools/ffmpeg_mux.c | 91 ++++++++++++++++++++++++++++++++++++-------- fftools/ffmpeg_opt.c | 6 --- 4 files changed, 76 insertions(+), 39 deletions(-) diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c index 6c774e9615..c1bb3926c4 100644 --- a/fftools/ffmpeg.c +++ b/fftools/ffmpeg.c @@ -595,15 +595,6 @@ static void ffmpeg_cleanup(int ret) avcodec_free_context(&ost->enc_ctx); avcodec_parameters_free(&ost->ref_par); - if (ost->muxing_queue) { - while (av_fifo_size(ost->muxing_queue)) { - AVPacket *pkt; - av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL); - av_packet_free(&pkt); - } - av_fifo_freep(&ost->muxing_queue); - } - av_freep(&output_streams[i]); } #if HAVE_THREADS diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h index e828f71dc0..28df1b179f 100644 --- a/fftools/ffmpeg.h +++ b/fftools/ffmpeg.h @@ -555,15 +555,6 @@ typedef struct OutputStream { int max_muxing_queue_size; - /* the packets are buffered here until the muxer is ready to be initialized */ - AVFifoBuffer *muxing_queue; - - /* - * The size of the AVPackets' buffers in queue. - * Updated when a packet is either pushed or pulled from the queue. - */ - size_t muxing_queue_data_size; - /* Threshold after which max_muxing_queue_size will be in effect */ size_t muxing_queue_data_threshold; diff --git a/fftools/ffmpeg_mux.c b/fftools/ffmpeg_mux.c index f4d76e1533..f03202bbb7 100644 --- a/fftools/ffmpeg_mux.c +++ b/fftools/ffmpeg_mux.c @@ -32,7 +32,20 @@ #include "libavformat/avformat.h" #include "libavformat/avio.h" +typedef struct MuxStream { + /* the packets are buffered here until the muxer is ready to be initialized */ + AVFifoBuffer *muxing_queue; + + /* + * The size of the AVPackets' buffers in queue. + * Updated when a packet is either pushed or pulled from the queue. + */ + size_t muxing_queue_data_size; +} MuxStream; + struct Muxer { + MuxStream *streams; + /* filesize limit expressed in bytes */ int64_t limit_filesize; int64_t final_filesize; @@ -55,6 +68,7 @@ void of_write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, { AVFormatContext *s = of->ctx; AVStream *st = ost->st; + MuxStream *ms = &of->mux->streams[st->index]; int ret; /* @@ -76,10 +90,10 @@ void of_write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, if (!of->mux->header_written) { AVPacket *tmp_pkt; /* the muxer is not initialized yet, buffer the packet */ - if (!av_fifo_space(ost->muxing_queue)) { - size_t cur_size = av_fifo_size(ost->muxing_queue); + if (!av_fifo_space(ms->muxing_queue)) { + size_t cur_size = av_fifo_size(ms->muxing_queue); unsigned int are_we_over_size = - (ost->muxing_queue_data_size + pkt->size) > ost->muxing_queue_data_threshold; + (ms->muxing_queue_data_size + pkt->size) > ost->muxing_queue_data_threshold; size_t limit = are_we_over_size ? ost->max_muxing_queue_size : INT_MAX; size_t new_size = FFMIN(2 * cur_size, limit); @@ -89,7 +103,7 @@ void of_write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, ost->file_index, ost->st->index); exit_program(1); } - ret = av_fifo_realloc2(ost->muxing_queue, new_size); + ret = av_fifo_realloc2(ms->muxing_queue, new_size); if (ret < 0) exit_program(1); } @@ -100,8 +114,8 @@ void of_write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, if (!tmp_pkt) exit_program(1); av_packet_move_ref(tmp_pkt, pkt); - ost->muxing_queue_data_size += tmp_pkt->size; - av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL); + ms->muxing_queue_data_size += tmp_pkt->size; + av_fifo_generic_write(ms->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL); return; } @@ -283,16 +297,17 @@ int of_check_init(OutputFile *of) /* flush the muxing queues */ for (i = 0; i < of->ctx->nb_streams; i++) { + MuxStream *ms = &of->mux->streams[i]; OutputStream *ost = output_streams[of->ost_index + i]; /* try to improve muxing time_base (only possible if nothing has been written yet) */ - if (!av_fifo_size(ost->muxing_queue)) + if (!av_fifo_size(ms->muxing_queue)) ost->mux_timebase = ost->st->time_base; - while (av_fifo_size(ost->muxing_queue)) { + while (av_fifo_size(ms->muxing_queue)) { AVPacket *pkt; - av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL); - ost->muxing_queue_data_size -= pkt->size; + av_fifo_generic_read(ms->muxing_queue, &pkt, sizeof(pkt), NULL); + ms->muxing_queue_data_size -= pkt->size; of_write_packet(of, pkt, ost, 1); av_packet_free(&pkt); } @@ -333,6 +348,31 @@ int of_write_trailer(OutputFile *of) return 0; } +static void mux_free(Muxer **pmux, int nb_streams) +{ + Muxer *mux = *pmux; + + if (!mux) + return; + + for (int i = 0; i < nb_streams; i++) { + MuxStream *ms = &mux->streams[i]; + + if (!ms->muxing_queue) + continue; + + while (av_fifo_size(ms->muxing_queue)) { + AVPacket *pkt; + av_fifo_generic_read(ms->muxing_queue, &pkt, sizeof(pkt), NULL); + av_packet_free(&pkt); + } + av_fifo_freep(&ms->muxing_queue); + } + av_freep(&mux->streams); + + av_freep(pmux); +} + void of_close(OutputFile **pof) { OutputFile *of = *pof; @@ -342,25 +382,42 @@ void of_close(OutputFile **pof) return; s = of->ctx; + + mux_free(&of->mux, s ? s->nb_streams : 0); + if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE)) avio_closep(&s->pb); avformat_free_context(s); av_dict_free(&of->opts); - av_freep(&of->mux); - av_freep(pof); } int of_muxer_init(OutputFile *of, int64_t limit_filesize) { Muxer *mux = av_mallocz(sizeof(*mux)); + int ret = 0; if (!mux) return AVERROR(ENOMEM); + mux->streams = av_calloc(of->ctx->nb_streams, sizeof(*mux->streams)); + if (!mux->streams) { + av_freep(&mux); + return AVERROR(ENOMEM); + } + of->mux = mux; + for (int i = 0; i < of->ctx->nb_streams; i++) { + MuxStream *ms = &mux->streams[i]; + ms->muxing_queue = av_fifo_alloc(8 * sizeof(AVPacket)); + if (!ms->muxing_queue) { + ret = AVERROR(ENOMEM); + goto fail; + } + } + mux->limit_filesize = limit_filesize; if (strcmp(of->format->name, "rtp")) @@ -368,12 +425,16 @@ int of_muxer_init(OutputFile *of, int64_t limit_filesize) /* write the header for files with no streams */ if (of->format->flags & AVFMT_NOSTREAMS && of->ctx->nb_streams == 0) { - int ret = of_check_init(of); + ret = of_check_init(of); if (ret < 0) - return ret; + goto fail; } - return 0; +fail: + if (ret < 0) + mux_free(&of->mux, of->ctx->nb_streams); + + return ret; } int of_finished(OutputFile *of) diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index ed3fd818d0..c7d1d21a37 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -1613,8 +1613,6 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e ost->max_muxing_queue_size = FFMIN(ost->max_muxing_queue_size, INT_MAX / sizeof(ost->pkt)); ost->max_muxing_queue_size *= sizeof(ost->pkt); - ost->muxing_queue_data_size = 0; - ost->muxing_queue_data_threshold = 50*1024*1024; MATCH_PER_STREAM_OPT(muxing_queue_data_threshold, i, ost->muxing_queue_data_threshold, oc, st); @@ -1638,10 +1636,6 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e } ost->last_mux_dts = AV_NOPTS_VALUE; - ost->muxing_queue = av_fifo_alloc(8 * sizeof(AVPacket)); - if (!ost->muxing_queue) - exit_program(1); - return ost; } -- 2.33.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".