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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Stefano Sabatini: > --- > Changelog | 1 + > configure | 4 + > doc/filters.texi | 35 ++++++++ > libavfilter/Makefile | 1 + > libavfilter/allfilters.c | 1 + > libavfilter/vf_quirc.c | 183 +++++++++++++++++++++++++++++++++++++++ > 6 files changed, 225 insertions(+) > create mode 100644 libavfilter/vf_quirc.c > > diff --git a/Changelog b/Changelog > index b483bb9c69..424bfc11af 100644 > --- a/Changelog > +++ b/Changelog > @@ -14,6 +14,7 @@ version : > - D3D12VA hardware accelerated H264, HEVC, VP9, AV1, MPEG-2 and VC1 decoding > - tiltandshift filter > - qrencode filter and qrencodesrc source > +- quirc filter > > version 6.1: > - libaribcaption decoder > diff --git a/configure b/configure > index 0b2f4e9792..419ff76bc1 100755 > --- a/configure > +++ b/configure > @@ -257,6 +257,7 @@ External library support: > --enable-libplacebo enable libplacebo library [no] > --enable-libpulse enable Pulseaudio input via libpulse [no] > --enable-libqrencode enable QR encode generation via libqrencode [no] > + --enable-libquirc enable QR decoding via libquirc [no] > --enable-librabbitmq enable RabbitMQ library [no] > --enable-librav1e enable AV1 encoding via rav1e [no] > --enable-librist enable RIST via librist [no] > @@ -1883,6 +1884,7 @@ EXTERNAL_LIBRARY_LIST=" > libplacebo > libpulse > libqrencode > + libquirc > librabbitmq > librav1e > librist > @@ -3793,6 +3795,7 @@ ocv_filter_deps="libopencv" > openclsrc_filter_deps="opencl" > qrencode_filter_deps="libqrencode" > qrencodesrc_filter_deps="libqrencode" > +quirc_filter_deps="libquirc" > overlay_opencl_filter_deps="opencl" > overlay_qsv_filter_deps="libmfx" > overlay_qsv_filter_select="qsvvpp" > @@ -6845,6 +6848,7 @@ enabled libopus && { > enabled libplacebo && require_pkg_config libplacebo "libplacebo >= 4.192.0" libplacebo/vulkan.h pl_vulkan_create > enabled libpulse && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new > enabled libqrencode && require_pkg_config libqrencode libqrencode qrencode.h QRcode_encodeString > +enabled libquirc && require libquirc quirc.h quirc_decode -lquirc > enabled librabbitmq && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection > enabled librav1e && require_pkg_config librav1e "rav1e >= 0.5.0" rav1e.h rav1e_context_new > enabled librist && require_pkg_config librist "librist >= 0.2.7" librist/librist.h rist_receiver_create > diff --git a/doc/filters.texi b/doc/filters.texi > index 04898ede31..5fbe381d74 100644 > --- a/doc/filters.texi > +++ b/doc/filters.texi > @@ -20368,6 +20368,41 @@ qrencode=text=%@{pts@} > > @end itemize > > +@section quirc > + > +Identify and decode a QR code using the libquirc library (see > +@url{https://github.com/dlbeer/quirc/}), and print the identified QR codes > +positions and payload as metadata. > + > +To enable the compilation of this filter, you need to configure FFmpeg with with > +@code{--enable-libquirc}. > + > +For each found QR code in the input video, some metadata entries are added with > +the prefix @var{lavfi.quirc.N}, where @var{N} is the index, starting from 0, > +associated to the QR code. > + > +A description of each metadata value follows: > + > +@table @option > +@item lavfi.quirc.count > +the number of found QR codes, it is not set in case none was found > + > +@item lavfi.quirc.N.x > +@item lavfi.quirc.N.y > +the top-left position of the @var{N} QR code > + > +@item lavfi.quirc.N.X > +@item lavfi.quirc.N.Y > +the bottom-right position of the @var{N} QR code > + > +@item lavfi.quirc.N.w > +@item lavfi.quirc.N.h > +the size of the @var{N} QR code > + > +@item lavfi.quirc.N.payload > +the payload of the QR code > +@end table > + > @section random > > Flush video frames from internal cache of frames into a random order. > diff --git a/libavfilter/Makefile b/libavfilter/Makefile > index 31371ceb1a..f65fb9a5a7 100644 > --- a/libavfilter/Makefile > +++ b/libavfilter/Makefile > @@ -437,6 +437,7 @@ OBJS-$(CONFIG_PSEUDOCOLOR_FILTER) += vf_pseudocolor.o > OBJS-$(CONFIG_PSNR_FILTER) += vf_psnr.o framesync.o > OBJS-$(CONFIG_PULLUP_FILTER) += vf_pullup.o > OBJS-$(CONFIG_QP_FILTER) += vf_qp.o > +OBJS-$(CONFIG_QUIRC_FILTER) += vf_quirc.o > OBJS-$(CONFIG_RANDOM_FILTER) += vf_random.o > OBJS-$(CONFIG_READEIA608_FILTER) += vf_readeia608.o > OBJS-$(CONFIG_READVITC_FILTER) += vf_readvitc.o > diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c > index 20feb37967..b8570dbab2 100644 > --- a/libavfilter/allfilters.c > +++ b/libavfilter/allfilters.c > @@ -412,6 +412,7 @@ extern const AVFilter ff_vf_psnr; > extern const AVFilter ff_vf_pullup; > extern const AVFilter ff_vf_qp; > extern const AVFilter ff_vf_qrencode; > +extern const AVFilter ff_vf_quirc; > extern const AVFilter ff_vf_random; > extern const AVFilter ff_vf_readeia608; > extern const AVFilter ff_vf_readvitc; > diff --git a/libavfilter/vf_quirc.c b/libavfilter/vf_quirc.c > new file mode 100644 > index 0000000000..6945a6aa31 > --- /dev/null > +++ b/libavfilter/vf_quirc.c > @@ -0,0 +1,183 @@ > +/* > + * 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 > + */ > + > +/** > + * @file QR decoder video filter > + * > + * Use libquirc library to decode the content of QR codes, and put the decoded > + * content to metadata. See: > + * https://github.com/dlbeer/quirc > + */ > + > +#include "config_components.h" Unneeded. > +//#include "libavutil/internal.h" > +#include "libavutil/opt.h" > +#include "avfilter.h" > +#include "formats.h" > +#include "video.h" > +#include > + > +typedef struct QuircContext { > + const AVClass *class; > + > + struct quirc *quirc; > +} QuircContext; > + > +static const AVOption quirc_options[] = { > + { NULL } > +}; There is no need for empty options (and also no need for an AVClass for a filter without options). > + > +static av_cold int init(AVFilterContext *ctx) > +{ > + QuircContext *quirc = ctx->priv; > + > + quirc->quirc = quirc_new(); > + if (!quirc->quirc) { > + return AVERROR(ENOMEM); > + } > + > + return 0; > +} > + > +static av_cold void uninit(AVFilterContext *ctx) > +{ > + QuircContext *quirc = ctx->priv; > + > + quirc_destroy(quirc->quirc); > +} > + > +static int config_input(AVFilterLink *inlink) > +{ > + AVFilterContext *ctx = inlink->dst; > + QuircContext *quirc = ctx->priv; > + int err; > + > + err = quirc_resize(quirc->quirc, inlink->w, inlink->h); > + if (err == -1) { > + return AVERROR(ENOMEM); > + } > + > + return 0; > +} > + > +static int query_formats(AVFilterContext *ctx) > +{ > + static const enum AVPixelFormat pix_fmts[] = {AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE}; > + return ff_set_common_formats_from_list(ctx, pix_fmts); > +} FILTER_QUERY_FUNC is inappropriate for this. > + > +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) > +{ > + AVFilterContext *ctx = inlink->dst; > + AVFilterLink *outlink = ctx->outputs[0]; > + QuircContext *quirc = ctx->priv; > + int codes_count; > + int i, w, h; > + uint8_t *image, *imagep, *srcp; > + > + image = quirc_begin(quirc->quirc, &w, &h); > + > + /* copy input image to quirc buffer */ > + imagep = image; > + srcp = frame->data[0]; > + for (i = 0; i < inlink->h; i++) { > + memcpy(imagep, srcp, w); > + imagep += w; > + srcp += frame->linesize[0]; > + } > + > + quirc_end(quirc->quirc); > + > + codes_count = quirc_count(quirc->quirc); > + av_log(ctx, AV_LOG_VERBOSE, > + "Found count %d codes in image #%ld\n", codes_count, inlink->frame_count_out); > + > + if (codes_count) { > + AVDictionary **metadata = &frame->metadata; > + > + av_dict_set_int(metadata, "lavfi.quirc.count", codes_count, 0); > + > + for (i = 0; i < codes_count; i++) { > + struct quirc_code code; > + struct quirc_data data; > + struct quirc_point top_left, bottom_right; > + quirc_decode_error_t err; > + int w, h; > + char metadata_key[64]; > + > + quirc_extract(quirc->quirc, i, &code); > + > + err = quirc_decode(&code, &data); > + if (err) { > + av_log(ctx, AV_LOG_WARNING, > + "Failed to decode image: %s\n", quirc_strerror(err)); > + continue; > + } > + > + top_left = code.corners[0]; > + bottom_right = code.corners[2]; > + w = bottom_right.x - top_left.x; > + h = bottom_right.y - top_left.y; > + > +#define SET_METADATA_I(key_, value_) \ > + snprintf(metadata_key, sizeof(metadata_key)-1, "lavfi.quirc.%d." #key_, i); \ > + av_dict_set_int(metadata, metadata_key, value_, AV_DICT_MATCH_CASE) > + > + SET_METADATA_I(x, top_left.x); > + SET_METADATA_I(y, top_left.y); > + SET_METADATA_I(X, bottom_right.x); > + SET_METADATA_I(Y, bottom_right.y); > + SET_METADATA_I(w, w); > + SET_METADATA_I(h, h); > + snprintf(metadata_key, sizeof(metadata_key)-1, "lavfi.quirc.%d.payload", i); \ > + av_dict_set(metadata, metadata_key, data.payload, 0); > + > + av_log(ctx, AV_LOG_INFO, > + "Found QR code at position %d+%d:%dx%d with payload: %s\n", > + top_left.x, top_left.y, w, h, data.payload); > + } > + } > + > + return ff_filter_frame(outlink, frame); > +} > + > +AVFILTER_DEFINE_CLASS(quirc); > + > +static const AVFilterPad inputs[] = { > + { > + .name = "default", > + .type = AVMEDIA_TYPE_VIDEO, > + .filter_frame = filter_frame, > + .config_props = config_input > + }, > +}; > + > +const AVFilter ff_vf_quirc = { > + .name = "quirc", > + .description = NULL_IF_CONFIG_SMALL("Decode and show QR codes content."), > + .priv_size = sizeof(QuircContext), > + .priv_class = &quirc_class, > + .init = init, > + .uninit = uninit, > + FILTER_INPUTS(inputs), > + FILTER_OUTPUTS(ff_video_default_filterpad), > + FILTER_QUERY_FUNC(query_formats), > + .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | > + AVFILTER_FLAG_METADATA_ONLY, > +}; > + _______________________________________________ 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".