diff options
author | Guo, Yejun <yejun.guo@intel.com> | 2020-02-20 10:25:57 +0300 |
---|---|---|
committer | Guo, Yejun <yejun.guo@intel.com> | 2020-03-12 13:22:18 +0300 |
commit | d86a8c056b4a4e607d93cd91cbdc421bf55a022b (patch) | |
tree | 6e35e34d61fc29dd384bc2d5d0b892a2f71f554b /libavfilter | |
parent | 31bc1c44d634ac52a25fbad1d096f26793c3888a (diff) |
avfilter/vf_dnn_processing.c: use swscale for uint8<->float32 convert
Signed-off-by: Guo, Yejun <yejun.guo@intel.com>
Reviewed-by: Pedro Arthur <bygrandao@gmail.com>
Diffstat (limited to 'libavfilter')
-rw-r--r-- | libavfilter/vf_dnn_processing.c | 81 |
1 files changed, 61 insertions, 20 deletions
diff --git a/libavfilter/vf_dnn_processing.c b/libavfilter/vf_dnn_processing.c index 492df93c20..4d0ee78e0b 100644 --- a/libavfilter/vf_dnn_processing.c +++ b/libavfilter/vf_dnn_processing.c @@ -32,6 +32,7 @@ #include "dnn_interface.h" #include "formats.h" #include "internal.h" +#include "libswscale/swscale.h" typedef struct DnnProcessingContext { const AVClass *class; @@ -47,6 +48,9 @@ typedef struct DnnProcessingContext { // input & output of the model at execution time DNNData input; DNNData output; + + struct SwsContext *sws_gray8_to_grayf32; + struct SwsContext *sws_grayf32_to_gray8; } DnnProcessingContext; #define OFFSET(x) offsetof(DnnProcessingContext, x) @@ -211,6 +215,45 @@ static int config_input(AVFilterLink *inlink) return 0; } +static int prepare_sws_context(AVFilterLink *outlink) +{ + AVFilterContext *context = outlink->src; + DnnProcessingContext *ctx = context->priv; + AVFilterLink *inlink = context->inputs[0]; + enum AVPixelFormat fmt = inlink->format; + DNNDataType input_dt = ctx->input.dt; + DNNDataType output_dt = ctx->output.dt; + + switch (fmt) { + case AV_PIX_FMT_RGB24: + case AV_PIX_FMT_BGR24: + if (input_dt == DNN_FLOAT) { + ctx->sws_gray8_to_grayf32 = sws_getContext(inlink->w * 3, + inlink->h, + AV_PIX_FMT_GRAY8, + inlink->w * 3, + inlink->h, + AV_PIX_FMT_GRAYF32, + 0, NULL, NULL, NULL); + } + if (output_dt == DNN_FLOAT) { + ctx->sws_grayf32_to_gray8 = sws_getContext(outlink->w * 3, + outlink->h, + AV_PIX_FMT_GRAYF32, + outlink->w * 3, + outlink->h, + AV_PIX_FMT_GRAY8, + 0, NULL, NULL, NULL); + } + return 0; + default: + //do nothing + break; + } + + return 0; +} + static int config_output(AVFilterLink *outlink) { AVFilterContext *context = outlink->src; @@ -227,25 +270,23 @@ static int config_output(AVFilterLink *outlink) outlink->w = ctx->output.width; outlink->h = ctx->output.height; + prepare_sws_context(outlink); + return 0; } -static int copy_from_frame_to_dnn(DNNData *dnn_input, const AVFrame *frame) +static int copy_from_frame_to_dnn(DnnProcessingContext *ctx, const AVFrame *frame) { int bytewidth = av_image_get_linesize(frame->format, frame->width, 0); + DNNData *dnn_input = &ctx->input; switch (frame->format) { case AV_PIX_FMT_RGB24: case AV_PIX_FMT_BGR24: if (dnn_input->dt == DNN_FLOAT) { - float *dnn_input_data = dnn_input->data; - for (int i = 0; i < frame->height; i++) { - for(int j = 0; j < frame->width * 3; j++) { - int k = i * frame->linesize[0] + j; - int t = i * frame->width * 3 + j; - dnn_input_data[t] = frame->data[0][k] / 255.0f; - } - } + sws_scale(ctx->sws_gray8_to_grayf32, (const uint8_t **)frame->data, frame->linesize, + 0, frame->height, (uint8_t * const*)(&dnn_input->data), + (const int [4]){frame->linesize[0] * sizeof(float), 0, 0, 0}); } else { av_assert0(dnn_input->dt == DNN_UINT8); av_image_copy_plane(dnn_input->data, bytewidth, @@ -266,22 +307,19 @@ static int copy_from_frame_to_dnn(DNNData *dnn_input, const AVFrame *frame) return 0; } -static int copy_from_dnn_to_frame(AVFrame *frame, const DNNData *dnn_output) +static int copy_from_dnn_to_frame(DnnProcessingContext *ctx, AVFrame *frame) { int bytewidth = av_image_get_linesize(frame->format, frame->width, 0); + DNNData *dnn_output = &ctx->output; switch (frame->format) { case AV_PIX_FMT_RGB24: case AV_PIX_FMT_BGR24: if (dnn_output->dt == DNN_FLOAT) { - float *dnn_output_data = dnn_output->data; - for (int i = 0; i < frame->height; i++) { - for(int j = 0; j < frame->width * 3; j++) { - int k = i * frame->linesize[0] + j; - int t = i * frame->width * 3 + j; - frame->data[0][k] = av_clip_uintp2((int)(dnn_output_data[t] * 255.0f), 8); - } - } + sws_scale(ctx->sws_grayf32_to_gray8, (const uint8_t *[4]){(const uint8_t *)dnn_output->data, 0, 0, 0}, + (const int[4]){frame->linesize[0] * sizeof(float), 0, 0, 0}, + 0, frame->height, (uint8_t * const*)frame->data, frame->linesize); + } else { av_assert0(dnn_output->dt == DNN_UINT8); av_image_copy_plane(frame->data[0], frame->linesize[0], @@ -318,7 +356,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in) DNNReturnType dnn_result; AVFrame *out; - copy_from_frame_to_dnn(&ctx->input, in); + copy_from_frame_to_dnn(ctx, in); dnn_result = (ctx->dnn_module->execute_model)(ctx->model, &ctx->output, 1); if (dnn_result != DNN_SUCCESS){ @@ -334,7 +372,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in) } av_frame_copy_props(out, in); - copy_from_dnn_to_frame(out, &ctx->output); + copy_from_dnn_to_frame(ctx, out); av_frame_free(&in); return ff_filter_frame(outlink, out); } @@ -343,6 +381,9 @@ static av_cold void uninit(AVFilterContext *ctx) { DnnProcessingContext *context = ctx->priv; + sws_freeContext(context->sws_gray8_to_grayf32); + sws_freeContext(context->sws_grayf32_to_gray8); + if (context->dnn_module) (context->dnn_module->free_model)(&context->model); |