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 AE59B46141 for ; Mon, 8 May 2023 09:18:18 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id EE01F68C141; Mon, 8 May 2023 12:18:05 +0300 (EEST) Received: from mail0.khirnov.net (red.khirnov.net [176.97.15.12]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 854A168C0ED for ; Mon, 8 May 2023 12:17:58 +0300 (EEST) Received: from localhost (localhost [IPv6:::1]) by mail0.khirnov.net (Postfix) with ESMTP id 4FD502404EC for ; Mon, 8 May 2023 11:17:58 +0200 (CEST) Received: from mail0.khirnov.net ([IPv6:::1]) by localhost (mail0.khirnov.net [IPv6:::1]) (amavisd-new, port 10024) with ESMTP id rM44_BZp4SRV for ; Mon, 8 May 2023 11:17:57 +0200 (CEST) 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 2C4AD240177 for ; Mon, 8 May 2023 11:17:57 +0200 (CEST) Received: from libav.khirnov.net (libav.khirnov.net [IPv6:::1]) by libav.khirnov.net (Postfix) with ESMTP id C005B3A01C0 for ; Mon, 8 May 2023 11:17:56 +0200 (CEST) From: Anton Khirnov To: ffmpeg-devel@ffmpeg.org Date: Mon, 8 May 2023 11:17:17 +0200 Message-Id: <20230508091738.20813-1-anton@khirnov.net> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 01/22] fftools/ffmpeg: consolidate InputStream.[next_]dts updates 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: Move them to a separate function called right after timestamp discontinuity processing. This is now possible, since these values have no interaction with decoding anymore. --- This set goes on top of the repeat_pict/ticks_per_frame set, and can also be obtained from branch 'ffmpeg_ist_dts' at https://git.khirnov.net/libav --- fftools/ffmpeg.c | 105 +++++++++++++++++++++++++---------------------- 1 file changed, 55 insertions(+), 50 deletions(-) diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c index e2ada7a352..2bd3ce3f13 100644 --- a/fftools/ffmpeg.c +++ b/fftools/ffmpeg.c @@ -1375,19 +1375,6 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eo AVPacket *avpkt = ist->pkt; - if (!ist->saw_first_ts) { - ist->first_dts = - ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0; - if (pkt && pkt->pts != AV_NOPTS_VALUE) { - ist->first_dts = - ist->dts += av_rescale_q(pkt->pts, pkt->time_base, AV_TIME_BASE_Q); - } - ist->saw_first_ts = 1; - } - - if (ist->next_dts == AV_NOPTS_VALUE) - ist->next_dts = ist->dts; - if (pkt) { av_packet_unref(avpkt); ret = av_packet_ref(avpkt, pkt); @@ -1395,10 +1382,6 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eo return ret; } - if (pkt && pkt->dts != AV_NOPTS_VALUE) { - ist->next_dts = ist->dts = av_rescale_q(pkt->dts, pkt->time_base, AV_TIME_BASE_Q); - } - // while we have more to decode or while the decoder did output something on EOF while (ist->decoding_needed) { int64_t duration_pts = 0; @@ -1477,39 +1460,6 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eo } } - if (pkt) { - ist->dts = ist->next_dts; - switch (par->codec_type) { - case AVMEDIA_TYPE_AUDIO: - av_assert1(pkt->duration >= 0); - if (par->sample_rate) { - ist->next_dts += ((int64_t)AV_TIME_BASE * par->frame_size) / - par->sample_rate; - } else { - ist->next_dts += av_rescale_q(pkt->duration, pkt->time_base, AV_TIME_BASE_Q); - } - break; - case AVMEDIA_TYPE_VIDEO: - if (ist->framerate.num) { - // TODO: Remove work-around for c99-to-c89 issue 7 - AVRational time_base_q = AV_TIME_BASE_Q; - int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate)); - ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q); - } else if (pkt->duration) { - ist->next_dts += av_rescale_q(pkt->duration, pkt->time_base, AV_TIME_BASE_Q); - } else if(ist->dec_ctx->framerate.num != 0) { - int fields = (ist->codec_desc && - (ist->codec_desc->props & AV_CODEC_PROP_FIELDS)) ? - ist->last_pkt_repeat_pict + 1 : 2; - AVRational field_rate = av_mul_q(ist->dec_ctx->framerate, - (AVRational){ 2, 1 }); - - ist->next_dts += av_rescale_q(fields, av_inv_q(field_rate), AV_TIME_BASE_Q); - } - break; - } - } - if (!pkt && !ist->decoding_needed) eof_reached = 1; @@ -1900,6 +1850,58 @@ static void ts_discontinuity_process(InputFile *ifile, InputStream *ist, ts_discontinuity_detect(ifile, ist, pkt); } +static void ist_dts_update(InputStream *ist, AVPacket *pkt) +{ + const AVCodecParameters *par = ist->par; + + if (!ist->saw_first_ts) { + ist->first_dts = + ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0; + if (pkt->pts != AV_NOPTS_VALUE) { + ist->first_dts = + ist->dts += av_rescale_q(pkt->pts, pkt->time_base, AV_TIME_BASE_Q); + } + ist->saw_first_ts = 1; + } + + if (ist->next_dts == AV_NOPTS_VALUE) + ist->next_dts = ist->dts; + + if (pkt->dts != AV_NOPTS_VALUE) + ist->next_dts = ist->dts = av_rescale_q(pkt->dts, pkt->time_base, AV_TIME_BASE_Q); + + ist->dts = ist->next_dts; + switch (par->codec_type) { + case AVMEDIA_TYPE_AUDIO: + av_assert1(pkt->duration >= 0); + if (par->sample_rate) { + ist->next_dts += ((int64_t)AV_TIME_BASE * par->frame_size) / + par->sample_rate; + } else { + ist->next_dts += av_rescale_q(pkt->duration, pkt->time_base, AV_TIME_BASE_Q); + } + break; + case AVMEDIA_TYPE_VIDEO: + if (ist->framerate.num) { + // TODO: Remove work-around for c99-to-c89 issue 7 + AVRational time_base_q = AV_TIME_BASE_Q; + int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate)); + ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q); + } else if (pkt->duration) { + ist->next_dts += av_rescale_q(pkt->duration, pkt->time_base, AV_TIME_BASE_Q); + } else if(ist->dec_ctx->framerate.num != 0) { + int fields = (ist->codec_desc && + (ist->codec_desc->props & AV_CODEC_PROP_FIELDS)) ? + ist->last_pkt_repeat_pict + 1 : 2; + AVRational field_rate = av_mul_q(ist->dec_ctx->framerate, + (AVRational){ 2, 1 }); + + ist->next_dts += av_rescale_q(fields, av_inv_q(field_rate), AV_TIME_BASE_Q); + } + break; + } +} + /* * Return * - 0 -- one packet was read and processed @@ -1985,6 +1987,9 @@ static int process_input(int file_index) // detect and try to correct for timestamp discontinuities ts_discontinuity_process(ifile, ist, pkt); + // update estimated/predicted dts + ist_dts_update(ist, pkt); + if (debug_ts) { av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s duration:%s duration_time:%s off:%s off_time:%s\n", ifile->index, pkt->stream_index, -- 2.39.2 _______________________________________________ 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".