diff options
author | Guo, Yejun <yejun.guo@intel.com> | 2021-02-07 09:36:13 +0300 |
---|---|---|
committer | Guo, Yejun <yejun.guo@intel.com> | 2021-04-17 12:27:02 +0300 |
commit | aa9ffdaa1eaeb5e16fb6b89852f38ff488d81173 (patch) | |
tree | 85afb97148ad11be2cf30d346fe91db448dd0faa /libavfilter | |
parent | e942b4bbaaddad451752254cbb60a3ea383294d6 (diff) |
lavfi: add filter dnn_detect for object detection
Below are the example steps to do object detection:
1. download and install l_openvino_toolkit_p_2021.1.110.tgz from
https://software.intel.com/content/www/us/en/develop/tools/openvino-toolkit/download.html
or, we can get source code (tag 2021.1), build and install.
2. export LD_LIBRARY_PATH with openvino settings, for example:
.../deployment_tools/inference_engine/lib/intel64/:.../deployment_tools/inference_engine/external/tbb/lib/
3. rebuild ffmpeg from source code with configure option:
--enable-libopenvino
--extra-cflags='-I.../deployment_tools/inference_engine/include/'
--extra-ldflags='-L.../deployment_tools/inference_engine/lib/intel64'
4. download model files and test image
wget https://github.com/guoyejun/ffmpeg_dnn/raw/main/models/openvino/2021.1/face-detection-adas-0001.bin
wget https://github.com/guoyejun/ffmpeg_dnn/raw/main/models/openvino/2021.1/face-detection-adas-0001.xml
wget
https://github.com/guoyejun/ffmpeg_dnn/raw/main/models/openvino/2021.1/face-detection-adas-0001.label
wget https://github.com/guoyejun/ffmpeg_dnn/raw/main/images/cici.jpg
5. run ffmpeg with:
./ffmpeg -i cici.jpg -vf dnn_detect=dnn_backend=openvino:model=face-detection-adas-0001.xml:input=data:output=detection_out:confidence=0.6:labels=face-detection-adas-0001.label,showinfo -f null -
We'll see the detect result as below:
[Parsed_showinfo_1 @ 0x560c21ecbe40] side data - detection bounding boxes:
[Parsed_showinfo_1 @ 0x560c21ecbe40] source: face-detection-adas-0001.xml
[Parsed_showinfo_1 @ 0x560c21ecbe40] index: 0, region: (1005, 813) -> (1086, 905), label: face, confidence: 10000/10000.
[Parsed_showinfo_1 @ 0x560c21ecbe40] index: 1, region: (888, 839) -> (967, 926), label: face, confidence: 6917/10000.
There are two faces detected with confidence 100% and 69.17%.
Signed-off-by: Guo, Yejun <yejun.guo@intel.com>
Diffstat (limited to 'libavfilter')
-rw-r--r-- | libavfilter/Makefile | 1 | ||||
-rw-r--r-- | libavfilter/allfilters.c | 1 | ||||
-rw-r--r-- | libavfilter/vf_dnn_detect.c | 421 |
3 files changed, 423 insertions, 0 deletions
diff --git a/libavfilter/Makefile b/libavfilter/Makefile index b2c254ea67..b77f2276a4 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -245,6 +245,7 @@ OBJS-$(CONFIG_DILATION_FILTER) += vf_neighbor.o OBJS-$(CONFIG_DILATION_OPENCL_FILTER) += vf_neighbor_opencl.o opencl.o \ opencl/neighbor.o OBJS-$(CONFIG_DISPLACE_FILTER) += vf_displace.o framesync.o +OBJS-$(CONFIG_DNN_DETECT_FILTER) += vf_dnn_detect.o OBJS-$(CONFIG_DNN_PROCESSING_FILTER) += vf_dnn_processing.o OBJS-$(CONFIG_DOUBLEWEAVE_FILTER) += vf_weave.o OBJS-$(CONFIG_DRAWBOX_FILTER) += vf_drawbox.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 0872c6e0f2..0d2bf7bbee 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -230,6 +230,7 @@ extern AVFilter ff_vf_detelecine; extern AVFilter ff_vf_dilation; extern AVFilter ff_vf_dilation_opencl; extern AVFilter ff_vf_displace; +extern AVFilter ff_vf_dnn_detect; extern AVFilter ff_vf_dnn_processing; extern AVFilter ff_vf_doubleweave; extern AVFilter ff_vf_drawbox; diff --git a/libavfilter/vf_dnn_detect.c b/libavfilter/vf_dnn_detect.c new file mode 100644 index 0000000000..2ae692d62a --- /dev/null +++ b/libavfilter/vf_dnn_detect.c @@ -0,0 +1,421 @@ +/* + * 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 + * implementing an object detecting filter using deep learning networks. + */ + +#include "libavformat/avio.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "libavutil/avassert.h" +#include "libavutil/imgutils.h" +#include "filters.h" +#include "dnn_filter_common.h" +#include "formats.h" +#include "internal.h" +#include "libavutil/time.h" +#include "libavutil/avstring.h" +#include "libavutil/detection_bbox.h" + +typedef struct DnnDetectContext { + const AVClass *class; + DnnContext dnnctx; + float confidence; + char *labels_filename; + char **labels; + int label_count; +} DnnDetectContext; + +#define OFFSET(x) offsetof(DnnDetectContext, dnnctx.x) +#define OFFSET2(x) offsetof(DnnDetectContext, x) +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM +static const AVOption dnn_detect_options[] = { + { "dnn_backend", "DNN backend", OFFSET(backend_type), AV_OPT_TYPE_INT, { .i64 = 2 }, INT_MIN, INT_MAX, FLAGS, "backend" }, +#if (CONFIG_LIBOPENVINO == 1) + { "openvino", "openvino backend flag", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, FLAGS, "backend" }, +#endif + DNN_COMMON_OPTIONS + { "confidence", "threshold of confidence", OFFSET2(confidence), AV_OPT_TYPE_FLOAT, { .dbl = 0.5 }, 0, 1, FLAGS}, + { "labels", "path to labels file", OFFSET2(labels_filename), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS }, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(dnn_detect); + +static int dnn_detect_post_proc(AVFrame *frame, DNNData *output, uint32_t nb, AVFilterContext *filter_ctx) +{ + DnnDetectContext *ctx = filter_ctx->priv; + float conf_threshold = ctx->confidence; + int proposal_count = output->height; + int detect_size = output->width; + float *detections = output->data; + int nb_bboxes = 0; + AVFrameSideData *sd; + AVDetectionBBox *bbox; + AVDetectionBBoxHeader *header; + + sd = av_frame_get_side_data(frame, AV_FRAME_DATA_DETECTION_BBOXES); + if (sd) { + av_log(filter_ctx, AV_LOG_ERROR, "already have bounding boxes in side data.\n"); + return -1; + } + + for (int i = 0; i < proposal_count; ++i) { + float conf = detections[i * detect_size + 2]; + if (conf < conf_threshold) { + continue; + } + nb_bboxes++; + } + + if (nb_bboxes == 0) { + av_log(filter_ctx, AV_LOG_VERBOSE, "nothing detected in this frame.\n"); + return 0; + } + + header = av_detection_bbox_create_side_data(frame, nb_bboxes); + if (!header) { + av_log(filter_ctx, AV_LOG_ERROR, "failed to create side data with %d bounding boxes\n", nb_bboxes); + return -1; + } + + av_strlcpy(header->source, ctx->dnnctx.model_filename, sizeof(header->source)); + + for (int i = 0; i < proposal_count; ++i) { + int av_unused image_id = (int)detections[i * detect_size + 0]; + int label_id = (int)detections[i * detect_size + 1]; + float conf = detections[i * detect_size + 2]; + float x0 = detections[i * detect_size + 3]; + float y0 = detections[i * detect_size + 4]; + float x1 = detections[i * detect_size + 5]; + float y1 = detections[i * detect_size + 6]; + + bbox = av_get_detection_bbox(header, i); + + if (conf < conf_threshold) { + continue; + } + + bbox->x = (int)(x0 * frame->width); + bbox->w = (int)(x1 * frame->width) - bbox->x; + bbox->y = (int)(y0 * frame->height); + bbox->h = (int)(y1 * frame->height) - bbox->y; + + bbox->detect_confidence = av_make_q((int)(conf * 10000), 10000); + bbox->classify_count = 0; + + if (ctx->labels && label_id < ctx->label_count) { + av_strlcpy(bbox->detect_label, ctx->labels[label_id], sizeof(bbox->detect_label)); + } else { + snprintf(bbox->detect_label, sizeof(bbox->detect_label), "%d", label_id); + } + + nb_bboxes--; + if (nb_bboxes == 0) { + break; + } + } + + return 0; +} + +static void free_detect_labels(DnnDetectContext *ctx) +{ + for (int i = 0; i < ctx->label_count; i++) { + av_freep(&ctx->labels[i]); + } + ctx->label_count = 0; + av_freep(&ctx->labels); +} + +static int read_detect_label_file(AVFilterContext *context) +{ + int line_len; + FILE *file; + DnnDetectContext *ctx = context->priv; + + file = av_fopen_utf8(ctx->labels_filename, "r"); + if (!file){ + av_log(context, AV_LOG_ERROR, "failed to open file %s\n", ctx->labels_filename); + return AVERROR(EINVAL); + } + + while (!feof(file)) { + char *label; + char buf[256]; + if (!fgets(buf, 256, file)) { + break; + } + + line_len = strlen(buf); + while (line_len) { + int i = line_len - 1; + if (buf[i] == '\n' || buf[i] == '\r' || buf[i] == ' ') { + buf[i] = '\0'; + line_len--; + } else { + break; + } + } + + if (line_len == 0) // empty line + continue; + + if (line_len >= AV_DETECTION_BBOX_LABEL_NAME_MAX_SIZE) { + av_log(context, AV_LOG_ERROR, "label %s too long\n", buf); + fclose(file); + return AVERROR(EINVAL); + } + + label = av_strdup(buf); + if (!label) { + av_log(context, AV_LOG_ERROR, "failed to allocate memory for label %s\n", buf); + fclose(file); + return AVERROR(ENOMEM); + } + + if (av_dynarray_add_nofree(&ctx->labels, &ctx->label_count, label) < 0) { + av_log(context, AV_LOG_ERROR, "failed to do av_dynarray_add\n"); + fclose(file); + av_freep(&label); + return AVERROR(ENOMEM); + } + } + + fclose(file); + return 0; +} + +static av_cold int dnn_detect_init(AVFilterContext *context) +{ + DnnDetectContext *ctx = context->priv; + int ret = ff_dnn_init(&ctx->dnnctx, DFT_ANALYTICS_DETECT, context); + if (ret < 0) + return ret; + ff_dnn_set_detect_post_proc(&ctx->dnnctx, dnn_detect_post_proc); + + if (ctx->labels_filename) { + return read_detect_label_file(context); + } + return 0; +} + +static int dnn_detect_query_formats(AVFilterContext *context) +{ + static const enum AVPixelFormat pix_fmts[] = { + AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, + AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAYF32, + AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, + AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, + AV_PIX_FMT_NV12, + AV_PIX_FMT_NONE + }; + AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); + return ff_set_common_formats(context, fmts_list); +} + +static int dnn_detect_filter_frame(AVFilterLink *inlink, AVFrame *in) +{ + AVFilterContext *context = inlink->dst; + AVFilterLink *outlink = context->outputs[0]; + DnnDetectContext *ctx = context->priv; + DNNReturnType dnn_result; + + dnn_result = ff_dnn_execute_model(&ctx->dnnctx, in, in); + if (dnn_result != DNN_SUCCESS){ + av_log(ctx, AV_LOG_ERROR, "failed to execute model\n"); + av_frame_free(&in); + return AVERROR(EIO); + } + + return ff_filter_frame(outlink, in); +} + +static int dnn_detect_activate_sync(AVFilterContext *filter_ctx) +{ + AVFilterLink *inlink = filter_ctx->inputs[0]; + AVFilterLink *outlink = filter_ctx->outputs[0]; + AVFrame *in = NULL; + int64_t pts; + int ret, status; + int got_frame = 0; + + FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink); + + do { + // drain all input frames + ret = ff_inlink_consume_frame(inlink, &in); + if (ret < 0) + return ret; + if (ret > 0) { + ret = dnn_detect_filter_frame(inlink, in); + if (ret < 0) + return ret; + got_frame = 1; + } + } while (ret > 0); + + // if frame got, schedule to next filter + if (got_frame) + return 0; + + if (ff_inlink_acknowledge_status(inlink, &status, &pts)) { + if (status == AVERROR_EOF) { + ff_outlink_set_status(outlink, status, pts); + return ret; + } + } + + FF_FILTER_FORWARD_WANTED(outlink, inlink); + + return FFERROR_NOT_READY; +} + +static int dnn_detect_flush_frame(AVFilterLink *outlink, int64_t pts, int64_t *out_pts) +{ + DnnDetectContext *ctx = outlink->src->priv; + int ret; + DNNAsyncStatusType async_state; + + ret = ff_dnn_flush(&ctx->dnnctx); + if (ret != DNN_SUCCESS) { + return -1; + } + + do { + AVFrame *in_frame = NULL; + AVFrame *out_frame = NULL; + async_state = ff_dnn_get_async_result(&ctx->dnnctx, &in_frame, &out_frame); + if (out_frame) { + av_assert0(in_frame == out_frame); + ret = ff_filter_frame(outlink, out_frame); + if (ret < 0) + return ret; + if (out_pts) + *out_pts = out_frame->pts + pts; + } + av_usleep(5000); + } while (async_state >= DAST_NOT_READY); + + return 0; +} + +static int dnn_detect_activate_async(AVFilterContext *filter_ctx) +{ + AVFilterLink *inlink = filter_ctx->inputs[0]; + AVFilterLink *outlink = filter_ctx->outputs[0]; + DnnDetectContext *ctx = filter_ctx->priv; + AVFrame *in = NULL; + int64_t pts; + int ret, status; + int got_frame = 0; + int async_state; + + FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink); + + do { + // drain all input frames + ret = ff_inlink_consume_frame(inlink, &in); + if (ret < 0) + return ret; + if (ret > 0) { + if (ff_dnn_execute_model_async(&ctx->dnnctx, in, in) != DNN_SUCCESS) { + return AVERROR(EIO); + } + } + } while (ret > 0); + + // drain all processed frames + do { + AVFrame *in_frame = NULL; + AVFrame *out_frame = NULL; + async_state = ff_dnn_get_async_result(&ctx->dnnctx, &in_frame, &out_frame); + if (out_frame) { + av_assert0(in_frame == out_frame); + ret = ff_filter_frame(outlink, out_frame); + if (ret < 0) + return ret; + got_frame = 1; + } + } while (async_state == DAST_SUCCESS); + + // if frame got, schedule to next filter + if (got_frame) + return 0; + + if (ff_inlink_acknowledge_status(inlink, &status, &pts)) { + if (status == AVERROR_EOF) { + int64_t out_pts = pts; + ret = dnn_detect_flush_frame(outlink, pts, &out_pts); + ff_outlink_set_status(outlink, status, out_pts); + return ret; + } + } + + FF_FILTER_FORWARD_WANTED(outlink, inlink); + + return 0; +} + +static int dnn_detect_activate(AVFilterContext *filter_ctx) +{ + DnnDetectContext *ctx = filter_ctx->priv; + + if (ctx->dnnctx.async) + return dnn_detect_activate_async(filter_ctx); + else + return dnn_detect_activate_sync(filter_ctx); +} + +static av_cold void dnn_detect_uninit(AVFilterContext *context) +{ + DnnDetectContext *ctx = context->priv; + ff_dnn_uninit(&ctx->dnnctx); + free_detect_labels(ctx); +} + +static const AVFilterPad dnn_detect_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + }, + { NULL } +}; + +static const AVFilterPad dnn_detect_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + }, + { NULL } +}; + +AVFilter ff_vf_dnn_detect = { + .name = "dnn_detect", + .description = NULL_IF_CONFIG_SMALL("Apply DNN detect filter to the input."), + .priv_size = sizeof(DnnDetectContext), + .init = dnn_detect_init, + .uninit = dnn_detect_uninit, + .query_formats = dnn_detect_query_formats, + .inputs = dnn_detect_inputs, + .outputs = dnn_detect_outputs, + .priv_class = &dnn_detect_class, + .activate = dnn_detect_activate, +}; |