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avfilter/vf_dnn_processing.c: use swscale for uint8<->float32 convert

Guo, Yejun committed 6 years ago

Commit d86a8c01 parent 31bc1c41 file · +61 −20Browse files

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libavfilter/vf_dnn_processing.c+61−20
@@ -32,6 +32,7 @@ · 31 unmodified lines
32#include "dnn_interface.h"32#include "dnn_interface.h"
33#include "formats.h"33#include "formats.h"
34#include "internal.h"34#include "internal.h"
35#include "libswscale/swscale.h"
35 36
36typedef struct DnnProcessingContext {37typedef struct DnnProcessingContext {
37 const AVClass *class;38 const AVClass *class;
@@ -47,6 +48,9 @@ typedef struct DnnProcessingContext { · 9 unmodified lines
47 // input & output of the model at execution time48 // input & output of the model at execution time
48 DNNData input;49 DNNData input;
49 DNNData output;50 DNNData output;
51
52 struct SwsContext *sws_gray8_to_grayf32;
53 struct SwsContext *sws_grayf32_to_gray8;
50} DnnProcessingContext;54} DnnProcessingContext;
51 55
52#define OFFSET(x) offsetof(DnnProcessingContext, x)56#define OFFSET(x) offsetof(DnnProcessingContext, x)
@@ -211,6 +215,45 @@ static int config_input(AVFilterLink *inlink) · 158 unmodified lines
211 return 0;215 return 0;
212}216}
213 217
218static int prepare_sws_context(AVFilterLink *outlink)
219{
220 AVFilterContext *context = outlink->src;
221 DnnProcessingContext *ctx = context->priv;
222 AVFilterLink *inlink = context->inputs[0];
223 enum AVPixelFormat fmt = inlink->format;
224 DNNDataType input_dt = ctx->input.dt;
225 DNNDataType output_dt = ctx->output.dt;
226
227 switch (fmt) {
228 case AV_PIX_FMT_RGB24:
229 case AV_PIX_FMT_BGR24:
230 if (input_dt == DNN_FLOAT) {
231 ctx->sws_gray8_to_grayf32 = sws_getContext(inlink->w * 3,
232 inlink->h,
233 AV_PIX_FMT_GRAY8,
234 inlink->w * 3,
235 inlink->h,
236 AV_PIX_FMT_GRAYF32,
237 0, NULL, NULL, NULL);
238 }
239 if (output_dt == DNN_FLOAT) {
240 ctx->sws_grayf32_to_gray8 = sws_getContext(outlink->w * 3,
241 outlink->h,
242 AV_PIX_FMT_GRAYF32,
243 outlink->w * 3,
244 outlink->h,
245 AV_PIX_FMT_GRAY8,
246 0, NULL, NULL, NULL);
247 }
248 return 0;
249 default:
250 //do nothing
251 break;
252 }
253
254 return 0;
255}
256
214static int config_output(AVFilterLink *outlink)257static int config_output(AVFilterLink *outlink)
215{258{
216 AVFilterContext *context = outlink->src;259 AVFilterContext *context = outlink->src;
@@ -227,25 +270,23 @@ static int config_output(AVFilterLink *outlink) · 10 unmodified lines
227 outlink->w = ctx->output.width;270 outlink->w = ctx->output.width;
228 outlink->h = ctx->output.height;271 outlink->h = ctx->output.height;
229 272
273 prepare_sws_context(outlink);
274
230 return 0;275 return 0;
231}276}
232 277
233static int copy_from_frame_to_dnn(DNNData *dnn_input, const AVFrame *frame)278static int copy_from_frame_to_dnn(DnnProcessingContext *ctx, const AVFrame *frame)
234{279{
235 int bytewidth = av_image_get_linesize(frame->format, frame->width, 0);280 int bytewidth = av_image_get_linesize(frame->format, frame->width, 0);
281 DNNData *dnn_input = &ctx->input;
236 282
237 switch (frame->format) {283 switch (frame->format) {
238 case AV_PIX_FMT_RGB24:284 case AV_PIX_FMT_RGB24:
239 case AV_PIX_FMT_BGR24:285 case AV_PIX_FMT_BGR24:
240 if (dnn_input->dt == DNN_FLOAT) {286 if (dnn_input->dt == DNN_FLOAT) {
241 float *dnn_input_data = dnn_input->data;287 sws_scale(ctx->sws_gray8_to_grayf32, (const uint8_t **)frame->data, frame->linesize,
242 for (int i = 0; i < frame->height; i++) {288 0, frame->height, (uint8_t * const*)(&dnn_input->data),
243 for(int j = 0; j < frame->width * 3; j++) {289 (const int [4]){frame->linesize[0] * sizeof(float), 0, 0, 0});
244 int k = i * frame->linesize[0] + j;
245 int t = i * frame->width * 3 + j;
246 dnn_input_data[t] = frame->data[0][k] / 255.0f;
247 }
248 }
249 } else {290 } else {
250 av_assert0(dnn_input->dt == DNN_UINT8);291 av_assert0(dnn_input->dt == DNN_UINT8);
251 av_image_copy_plane(dnn_input->data, bytewidth,292 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) · 14 unmodified lines
266 return 0;307 return 0;
267}308}
268 309
269static int copy_from_dnn_to_frame(AVFrame *frame, const DNNData *dnn_output)310static int copy_from_dnn_to_frame(DnnProcessingContext *ctx, AVFrame *frame)
270{311{
271 int bytewidth = av_image_get_linesize(frame->format, frame->width, 0);312 int bytewidth = av_image_get_linesize(frame->format, frame->width, 0);
313 DNNData *dnn_output = &ctx->output;
272 314
273 switch (frame->format) {315 switch (frame->format) {
274 case AV_PIX_FMT_RGB24:316 case AV_PIX_FMT_RGB24:
275 case AV_PIX_FMT_BGR24:317 case AV_PIX_FMT_BGR24:
276 if (dnn_output->dt == DNN_FLOAT) {318 if (dnn_output->dt == DNN_FLOAT) {
277 float *dnn_output_data = dnn_output->data;319 sws_scale(ctx->sws_grayf32_to_gray8, (const uint8_t *[4]){(const uint8_t *)dnn_output->data, 0, 0, 0},
278 for (int i = 0; i < frame->height; i++) {320 (const int[4]){frame->linesize[0] * sizeof(float), 0, 0, 0},
279 for(int j = 0; j < frame->width * 3; j++) {321 0, frame->height, (uint8_t * const*)frame->data, frame->linesize);
280 int k = i * frame->linesize[0] + j;322
281 int t = i * frame->width * 3 + j;
282 frame->data[0][k] = av_clip_uintp2((int)(dnn_output_data[t] * 255.0f), 8);
283 }
284 }
285 } else {323 } else {
286 av_assert0(dnn_output->dt == DNN_UINT8);324 av_assert0(dnn_output->dt == DNN_UINT8);
287 av_image_copy_plane(frame->data[0], frame->linesize[0],325 av_image_copy_plane(frame->data[0], frame->linesize[0],
@@ -318,7 +356,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in) · 30 unmodified lines
318 DNNReturnType dnn_result;356 DNNReturnType dnn_result;
319 AVFrame *out;357 AVFrame *out;
320 358
321 copy_from_frame_to_dnn(&ctx->input, in);359 copy_from_frame_to_dnn(ctx, in);
322 360
323 dnn_result = (ctx->dnn_module->execute_model)(ctx->model, &ctx->output, 1);361 dnn_result = (ctx->dnn_module->execute_model)(ctx->model, &ctx->output, 1);
324 if (dnn_result != DNN_SUCCESS){362 if (dnn_result != DNN_SUCCESS){
@@ -334,7 +372,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in) · 9 unmodified lines
334 }372 }
335 373
336 av_frame_copy_props(out, in);374 av_frame_copy_props(out, in);
337 copy_from_dnn_to_frame(out, &ctx->output);375 copy_from_dnn_to_frame(ctx, out);
338 av_frame_free(&in);376 av_frame_free(&in);
339 return ff_filter_frame(outlink, out);377 return ff_filter_frame(outlink, out);
340}378}
@@ -343,6 +381,9 @@ static av_cold void uninit(AVFilterContext *ctx) · 2 unmodified lines
343{381{
344 DnnProcessingContext *context = ctx->priv;382 DnnProcessingContext *context = ctx->priv;
345 383
384 sws_freeContext(context->sws_gray8_to_grayf32);
385 sws_freeContext(context->sws_grayf32_to_gray8);
386
346 if (context->dnn_module)387 if (context->dnn_module)
347 (context->dnn_module->free_model)(&context->model);388 (context->dnn_module->free_model)(&context->model);
348 389

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