On 30/05/2024 03:04, James Almer wrote:
Sure, that's acceptable. If anything, it would help get better support for AVFrame's crop fields through the codebase.On 5/29/2024 10:01 PM, Lynne via ffmpeg-devel wrote:On 29/05/2024 23:46, James Almer wrote:Signed-off-by: James Almer <jamr...@gmail.com> --- fftools/ffmpeg.h | 7 +++++++ fftools/ffmpeg_demux.c | 16 ++++++++++++++++ fftools/ffmpeg_filter.c | 11 +++++++++++ fftools/ffmpeg_opt.c | 3 +++ 4 files changed, 37 insertions(+)diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h index fe75706afd..f908e16549 100644 --- a/fftools/ffmpeg.h +++ b/fftools/ffmpeg.h @@ -155,6 +155,7 @@ typedef struct OptionsContext { SpecifierOptList hwaccel_devices; SpecifierOptList hwaccel_output_formats; SpecifierOptList autorotate; + SpecifierOptList apply_cropping; /* output options */ StreamMap *stream_maps; @@ -239,6 +240,7 @@ enum IFilterFlags { IFILTER_FLAG_AUTOROTATE = (1 << 0), IFILTER_FLAG_REINIT = (1 << 1), IFILTER_FLAG_CFR = (1 << 2), + IFILTER_FLAG_CROP = (1 << 3), }; typedef struct InputFilterOptions { @@ -254,6 +256,11 @@ typedef struct InputFilterOptions { * accurate */ AVRational framerate; + unsigned crop_top; + unsigned crop_bottom; + unsigned crop_left; + unsigned crop_right; + int sub2video_width; int sub2video_height; diff --git a/fftools/ffmpeg_demux.c b/fftools/ffmpeg_demux.c index 1ca8d804ae..4178b8f840 100644 --- a/fftools/ffmpeg_demux.c +++ b/fftools/ffmpeg_demux.c @@ -66,6 +66,7 @@ typedef struct DemuxStream { int have_sub2video; int reinit_filters; int autorotate; + int apply_cropping; int wrap_correction_done;@@ -1000,11 +1001,20 @@ int ist_filter_add(InputStream *ist, InputFilter *ifilter, int is_simple,ist->filters[ist->nb_filters - 1] = ifilter; if (ist->par->codec_type == AVMEDIA_TYPE_VIDEO) {+ const AVPacketSideData *sd = av_packet_side_data_get(ist->st->codecpar->coded_side_data,+ ist->st->codecpar->nb_coded_side_data, + AV_PKT_DATA_FRAME_CROPPING); if (ist->framerate.num > 0 && ist->framerate.den > 0) { opts->framerate = ist->framerate; opts->flags |= IFILTER_FLAG_CFR; } elseopts->framerate = av_guess_frame_rate(d->f.ctx, ist->st, NULL);+ if (sd && sd->size == sizeof(uint32_t) * 4) { + opts->crop_top = AV_RL32(sd->data + 0); + opts->crop_bottom = AV_RL32(sd->data + 4); + opts->crop_left = AV_RL32(sd->data + 8); + opts->crop_right = AV_RL32(sd->data + 12); + } } else if (ist->par->codec_type == AVMEDIA_TYPE_SUBTITLE) { /* Compute the size of the canvas for the subtitles stream.If the subtitles codecpar has set a size, use it. Otherwise use the @@ -1059,6 +1069,7 @@ int ist_filter_add(InputStream *ist, InputFilter *ifilter, int is_simple,return AVERROR(ENOMEM); opts->flags |= IFILTER_FLAG_AUTOROTATE * !!(ds->autorotate) | + IFILTER_FLAG_CROP * !!(ds->apply_cropping) | IFILTER_FLAG_REINIT * !!(ds->reinit_filters); return ds->sch_idx_dec;@@ -1241,6 +1252,9 @@ static int ist_add(const OptionsContext *o, Demuxer *d, AVStream *st)ds->autorotate = 1; MATCH_PER_STREAM_OPT(autorotate, i, ds->autorotate, ic, st); + ds->apply_cropping = 1;+ MATCH_PER_STREAM_OPT(apply_cropping, i, ds->apply_cropping, ic, st);+ MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st); if (codec_tag) { uint32_t tag = strtol(codec_tag, &next, 0);@@ -1362,6 +1376,8 @@ static int ist_add(const OptionsContext *o, Demuxer *d, AVStream *st)ds->dec_opts.flags |= DECODER_FLAG_BITEXACT * !!o->bitexact;+ av_dict_set_int(&ds->decoder_opts, "apply_cropping", ds->apply_cropping, 0);+/* Attached pics are sparse, therefore we would not want to delay their decoding* till EOF. */ if (ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC) diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c index 12cca684b4..a31fa1be7f 100644 --- a/fftools/ffmpeg_filter.c +++ b/fftools/ffmpeg_filter.c@@ -1701,6 +1701,17 @@ static int configure_input_video_filter(FilterGraph *fg, AVFilterGraph *graph,desc = av_pix_fmt_desc_get(ifp->format); av_assert0(desc); + if ((ifp->opts.flags & IFILTER_FLAG_CROP) && + !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) { + char crop_buf[64]; + snprintf(crop_buf, sizeof(crop_buf), "w=iw-%d-%d:h=ih-%d-%d", + ifp->opts.crop_left, ifp->opts.crop_right, + ifp->opts.crop_top, ifp->opts.crop_bottom); + ret = insert_filter(&last_filter, &pad_idx, "crop", crop_buf); + if (ret < 0) + return ret; + }The crop filter supports hardware frames too.It exports the values within the AVFrame fields. If that's acceptable then i can remove this check.
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