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 34AAA4384A for ; Thu, 30 Jun 2022 15:22:36 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id DB12368B655; Thu, 30 Jun 2022 18:22:33 +0300 (EEST) Received: from btbn.de (btbn.de [136.243.74.85]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 3EFFA68B4F5 for ; Thu, 30 Jun 2022 18:22:27 +0300 (EEST) Received: from [authenticated] by btbn.de (Postfix) with ESMTPSA id D0E192FA492; Thu, 30 Jun 2022 17:22:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rothenpieler.org; s=mail; t=1656602546; bh=OAQi5VLTzRWb01TZslwZNJNlW8Tt9OL10B0TKX3nJSY=; h=From:To:Cc:Subject:Date; b=Tab0ysHS0Yo/XbvNscygX4NNEeKi8UDy2bzNcUYwNNlSIa9J/ya6Fi0xfpQkqdKCn QK616fy+OF+KHdrS8g01w/lc4fOS4tQmWyTtH2oKXQg5j6/U4q0uBrPl5zzvEtauIs qMEbx19Yf20/8tCa4VchvJrry0IJFl+jYcUMPxz/4474EvRi5fCtkE7PJIFcbMPgrB OJ5GtstrWF14zXYxRoVFJYp+fvkjxYNa1bhUKMjhCCYcAq6EwXSLHeRAUU5Bc8O0ok TblTgbxTnalapg2dp2tokUMrCYDgjdnzAIKadu2Ma9tS6x4GN9if02tcNV6E98lMRM q/lfG0n6PCwrw== From: Timo Rothenpieler To: ffmpeg-devel@ffmpeg.org Date: Thu, 30 Jun 2022 17:22:06 +0200 Message-Id: <20220630152206.15366-1-timo@rothenpieler.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH] avdevice/lavfi: output wrapped AVFrames 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: Timo Rothenpieler 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: This avoids an extra copy of potentially quite big video frames. Instead of copying the entire frames data into a rawvideo packet it packs the frame into a wrapped avframe packet and passes it through as-is. Unfortunately, wrapped avframes are set up to be video frames, so the audio frames unfortunately continue to be copied. Additionally, this enabled passing through video frames that previously were impossible to process, like hardware frames or other special formats that couldn't be packed into a rawvideo packet. --- libavdevice/lavfi.c | 87 +++++++++-------------- tests/ref/fate/filter-metadata-cropdetect | 3 +- 2 files changed, 36 insertions(+), 54 deletions(-) diff --git a/libavdevice/lavfi.c b/libavdevice/lavfi.c index db5d0b94de..61076f9950 100644 --- a/libavdevice/lavfi.c +++ b/libavdevice/lavfi.c @@ -54,32 +54,10 @@ typedef struct { int *sink_eof; int *stream_sink_map; int *sink_stream_subcc_map; - AVFrame *decoded_frame; int nb_sinks; AVPacket subcc_packet; } LavfiContext; -static int *create_all_formats(int n) -{ - int i, j, *fmts, count = 0; - - for (i = 0; i < n; i++) { - const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i); - if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) - count++; - } - - if (!(fmts = av_malloc_array(count + 1, sizeof(*fmts)))) - return NULL; - for (j = 0, i = 0; i < n; i++) { - const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i); - if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) - fmts[j++] = i; - } - fmts[j] = AV_PIX_FMT_NONE; - return fmts; -} - av_cold static int lavfi_read_close(AVFormatContext *avctx) { LavfiContext *lavfi = avctx->priv_data; @@ -90,7 +68,6 @@ av_cold static int lavfi_read_close(AVFormatContext *avctx) av_freep(&lavfi->sink_stream_subcc_map); av_freep(&lavfi->sinks); avfilter_graph_free(&lavfi->graph); - av_frame_free(&lavfi->decoded_frame); return 0; } @@ -125,15 +102,11 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx) LavfiContext *lavfi = avctx->priv_data; AVFilterInOut *input_links = NULL, *output_links = NULL, *inout; const AVFilter *buffersink, *abuffersink; - int *pix_fmts = create_all_formats(AV_PIX_FMT_NB); enum AVMediaType type; int ret = 0, i, n; #define FAIL(ERR) { ret = ERR; goto end; } - if (!pix_fmts) - FAIL(AVERROR(ENOMEM)); - buffersink = avfilter_get_by_name("buffersink"); abuffersink = avfilter_get_by_name("abuffersink"); @@ -264,8 +237,6 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx) ret = avfilter_graph_create_filter(&sink, buffersink, inout->name, NULL, NULL, lavfi->graph); - if (ret >= 0) - ret = av_opt_set_int_list(sink, "pix_fmts", pix_fmts, AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN); if (ret < 0) goto end; } else if (type == AVMEDIA_TYPE_AUDIO) { @@ -321,15 +292,11 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx) avpriv_set_pts_info(st, 64, time_base.num, time_base.den); par->codec_type = av_buffersink_get_type(sink); if (par->codec_type == AVMEDIA_TYPE_VIDEO) { - int64_t probesize; - par->codec_id = AV_CODEC_ID_RAWVIDEO; + par->codec_id = AV_CODEC_ID_WRAPPED_AVFRAME; par->format = av_buffersink_get_format(sink); par->width = av_buffersink_get_w(sink); par->height = av_buffersink_get_h(sink); - probesize = par->width * par->height * 30 * - av_get_padded_bits_per_pixel(av_pix_fmt_desc_get(par->format)); - avctx->probesize = FFMAX(avctx->probesize, probesize); - st ->sample_aspect_ratio = + st ->sample_aspect_ratio = par->sample_aspect_ratio = av_buffersink_get_sample_aspect_ratio(sink); } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) { par->sample_rate = av_buffersink_get_sample_rate(sink); @@ -348,11 +315,7 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx) if ((ret = create_subcc_streams(avctx)) < 0) goto end; - if (!(lavfi->decoded_frame = av_frame_alloc())) - FAIL(AVERROR(ENOMEM)); - end: - av_free(pix_fmts); avfilter_inout_free(&input_links); avfilter_inout_free(&output_links); return ret; @@ -378,15 +341,20 @@ static int create_subcc_packet(AVFormatContext *avctx, AVFrame *frame, return 0; } +static void lavfi_free_frame(void *opaque, uint8_t *data) +{ + AVFrame *frame = (AVFrame*)data; + av_frame_free(&frame); +} + static int lavfi_read_packet(AVFormatContext *avctx, AVPacket *pkt) { LavfiContext *lavfi = avctx->priv_data; double min_pts = DBL_MAX; int stream_idx, min_pts_sink_idx = 0; - AVFrame *frame = lavfi->decoded_frame; + AVFrame *frame; AVDictionary *frame_metadata; int ret, i; - int size = 0; AVStream *st; if (lavfi->subcc_packet.size) { @@ -394,6 +362,10 @@ static int lavfi_read_packet(AVFormatContext *avctx, AVPacket *pkt) return pkt->size; } + frame = av_frame_alloc(); + if (!frame) + return AVERROR(ENOMEM); + /* iterate through all the graph sinks. Select the sink with the * minimum PTS */ for (i = 0; i < lavfi->nb_sinks; i++) { @@ -411,7 +383,7 @@ static int lavfi_read_packet(AVFormatContext *avctx, AVPacket *pkt) lavfi->sink_eof[i] = 1; continue; } else if (ret < 0) - return ret; + goto fail; d = av_rescale_q_rnd(frame->pts, tb, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX); ff_dlog(avctx, "sink_idx:%d time:%f\n", i, d); av_frame_unref(frame); @@ -421,8 +393,10 @@ static int lavfi_read_packet(AVFormatContext *avctx, AVPacket *pkt) min_pts_sink_idx = i; } } - if (min_pts == DBL_MAX) - return AVERROR_EOF; + if (min_pts == DBL_MAX) { + ret = AVERROR_EOF; + goto fail; + } ff_dlog(avctx, "min_pts_sink_idx:%i\n", min_pts_sink_idx); @@ -431,15 +405,19 @@ static int lavfi_read_packet(AVFormatContext *avctx, AVPacket *pkt) st = avctx->streams[stream_idx]; if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { - size = av_image_get_buffer_size(frame->format, frame->width, frame->height, 1); - if ((ret = av_new_packet(pkt, size)) < 0) + pkt->buf = av_buffer_create((uint8_t*)frame, sizeof(*frame), + &lavfi_free_frame, NULL, 0); + if (!pkt->buf) { + ret = AVERROR(ENOMEM); goto fail; + } - av_image_copy_to_buffer(pkt->data, size, (const uint8_t **)frame->data, frame->linesize, - frame->format, frame->width, frame->height, 1); + pkt->data = pkt->buf->data; + pkt->size = pkt->buf->size; + pkt->flags |= AV_PKT_FLAG_TRUSTED; } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { - size = frame->nb_samples * av_get_bytes_per_sample(frame->format) * - frame->ch_layout.nb_channels; + int size = frame->nb_samples * av_get_bytes_per_sample(frame->format) * + frame->ch_layout.nb_channels; if ((ret = av_new_packet(pkt, size)) < 0) goto fail; memcpy(pkt->data, frame->data[0], size); @@ -468,10 +446,13 @@ static int lavfi_read_packet(AVFormatContext *avctx, AVPacket *pkt) pkt->stream_index = stream_idx; pkt->pts = frame->pts; pkt->pos = frame->pkt_pos; - av_frame_unref(frame); - return size; + + if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO) + av_frame_free(&frame); + + return pkt->size; fail: - av_frame_unref(frame); + av_frame_free(&frame); return ret; } diff --git a/tests/ref/fate/filter-metadata-cropdetect b/tests/ref/fate/filter-metadata-cropdetect index e7c03ead4e..104acdd77f 100644 --- a/tests/ref/fate/filter-metadata-cropdetect +++ b/tests/ref/fate/filter-metadata-cropdetect @@ -1,4 +1,5 @@ -pts=0 +pts=0| + pts=400 pts=800|tag:lavfi.cropdetect.x1=0|tag:lavfi.cropdetect.x2=719|tag:lavfi.cropdetect.y1=61|tag:lavfi.cropdetect.y2=424|tag:lavfi.cropdetect.w=720|tag:lavfi.cropdetect.h=352|tag:lavfi.cropdetect.x=0|tag:lavfi.cropdetect.y=68 pts=1200|tag:lavfi.cropdetect.x1=0|tag:lavfi.cropdetect.x2=719|tag:lavfi.cropdetect.y1=61|tag:lavfi.cropdetect.y2=424|tag:lavfi.cropdetect.w=720|tag:lavfi.cropdetect.h=352|tag:lavfi.cropdetect.x=0|tag:lavfi.cropdetect.y=68 -- 2.34.1 _______________________________________________ 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".