#include "libswscale/swscale.h"
#include "dnn_interface.h"
-typedef enum {SRCNN, ESPCN} SRModel;
-
typedef struct SRContext {
const AVClass *class;
- SRModel model_type;
char *model_filename;
DNNBackendType backend_type;
DNNModule *dnn_module;
DNNModel *model;
DNNData input, output;
int scale_factor;
- struct SwsContext *sws_context;
- int sws_slice_h;
+ struct SwsContext *sws_contexts[3];
+ int sws_slice_h, sws_input_linesize, sws_output_linesize;
} SRContext;
#define OFFSET(x) offsetof(SRContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
static const AVOption sr_options[] = {
- { "model", "specifies what DNN model to use", OFFSET(model_type), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, 1, FLAGS, "model_type" },
- { "srcnn", "Super-Resolution Convolutional Neural Network model (scale factor should be specified for custom SRCNN model)", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FLAGS, "model_type" },
- { "espcn", "Efficient Sub-Pixel Convolutional Neural Network model", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, "model_type" },
{ "dnn_backend", "DNN backend used for model execution", OFFSET(backend_type), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, 1, FLAGS, "backend" },
{ "native", "native backend flag", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FLAGS, "backend" },
#if (CONFIG_LIBTENSORFLOW == 1)
{ "tensorflow", "tensorflow backend flag", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, "backend" },
#endif
- {"scale_factor", "scale factor for SRCNN model", OFFSET(scale_factor), AV_OPT_TYPE_INT, { .i64 = 2 }, 2, 4, FLAGS},
- { "model_filename", "path to model file specifying network architecture and its parameters", OFFSET(model_filename), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
+ { "scale_factor", "scale factor for SRCNN model", OFFSET(scale_factor), AV_OPT_TYPE_INT, { .i64 = 2 }, 2, 4, FLAGS },
+ { "model", "path to model file specifying network architecture and its parameters", OFFSET(model_filename), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
{ NULL }
};
return AVERROR(ENOMEM);
}
if (!sr_context->model_filename){
- av_log(context, AV_LOG_VERBOSE, "model file for network was not specified, using default network for x2 upsampling\n");
- sr_context->scale_factor = 2;
- switch (sr_context->model_type){
- case SRCNN:
- sr_context->model = (sr_context->dnn_module->load_default_model)(DNN_SRCNN);
- break;
- case ESPCN:
- sr_context->model = (sr_context->dnn_module->load_default_model)(DNN_ESPCN);
- }
+ av_log(context, AV_LOG_ERROR, "model file for network was not specified\n");
+ return AVERROR(EIO);
}
else{
- sr_context->model = (sr_context->dnn_module->load_model)(sr_context->model_filename);
+ if (!sr_context->dnn_module->load_model) {
+ av_log(context, AV_LOG_ERROR, "load_model for network was not specified\n");
+ return AVERROR(EIO);
+ } else {
+ sr_context->model = (sr_context->dnn_module->load_model)(sr_context->model_filename);
+ }
}
if (!sr_context->model){
av_log(context, AV_LOG_ERROR, "could not load DNN model\n");
return AVERROR(EIO);
}
+ sr_context->sws_contexts[0] = NULL;
+ sr_context->sws_contexts[1] = NULL;
+ sr_context->sws_contexts[2] = NULL;
+
return 0;
}
av_log(context, AV_LOG_ERROR, "could not create formats list\n");
return AVERROR(ENOMEM);
}
+
return ff_set_common_formats(context, formats_list);
}
DNNReturnType result;
int sws_src_h, sws_src_w, sws_dst_h, sws_dst_w;
- switch (sr_context->model_type){
- case SRCNN:
- sr_context->input.width = inlink->w * sr_context->scale_factor;
- sr_context->input.height = inlink->h * sr_context->scale_factor;
- break;
- case ESPCN:
- sr_context->input.width = inlink->w;
- sr_context->input.height = inlink->h;
- }
+ sr_context->input.width = inlink->w * sr_context->scale_factor;
+ sr_context->input.height = inlink->h * sr_context->scale_factor;
sr_context->input.channels = 1;
result = (sr_context->model->set_input_output)(sr_context->model->model, &sr_context->input, &sr_context->output);
return AVERROR(EIO);
}
else{
+ if (sr_context->input.height != sr_context->output.height || sr_context->input.width != sr_context->output.width){
+ sr_context->input.width = inlink->w;
+ sr_context->input.height = inlink->h;
+ result = (sr_context->model->set_input_output)(sr_context->model->model, &sr_context->input, &sr_context->output);
+ if (result != DNN_SUCCESS){
+ av_log(context, AV_LOG_ERROR, "could not set input and output for the model\n");
+ return AVERROR(EIO);
+ }
+ sr_context->scale_factor = 0;
+ }
outlink->h = sr_context->output.height;
outlink->w = sr_context->output.width;
- switch (sr_context->model_type){
- case SRCNN:
- sr_context->sws_context = sws_getContext(inlink->w, inlink->h, inlink->format,
- outlink->w, outlink->h, outlink->format, SWS_BICUBIC, NULL, NULL, NULL);
- if (!sr_context->sws_context){
- av_log(context, AV_LOG_ERROR, "could not create SwsContext\n");
+ sr_context->sws_contexts[1] = sws_getContext(sr_context->input.width, sr_context->input.height, AV_PIX_FMT_GRAY8,
+ sr_context->input.width, sr_context->input.height, AV_PIX_FMT_GRAYF32,
+ 0, NULL, NULL, NULL);
+ sr_context->sws_input_linesize = sr_context->input.width << 2;
+ sr_context->sws_contexts[2] = sws_getContext(sr_context->output.width, sr_context->output.height, AV_PIX_FMT_GRAYF32,
+ sr_context->output.width, sr_context->output.height, AV_PIX_FMT_GRAY8,
+ 0, NULL, NULL, NULL);
+ sr_context->sws_output_linesize = sr_context->output.width << 2;
+ if (!sr_context->sws_contexts[1] || !sr_context->sws_contexts[2]){
+ av_log(context, AV_LOG_ERROR, "could not create SwsContext for conversions\n");
+ return AVERROR(ENOMEM);
+ }
+ if (sr_context->scale_factor){
+ sr_context->sws_contexts[0] = sws_getContext(inlink->w, inlink->h, inlink->format,
+ outlink->w, outlink->h, outlink->format,
+ SWS_BICUBIC, NULL, NULL, NULL);
+ if (!sr_context->sws_contexts[0]){
+ av_log(context, AV_LOG_ERROR, "could not create SwsContext for scaling\n");
return AVERROR(ENOMEM);
}
sr_context->sws_slice_h = inlink->h;
- break;
- case ESPCN:
- if (inlink->format == AV_PIX_FMT_GRAY8){
- sr_context->sws_context = NULL;
- }
- else{
+ }
+ else{
+ if (inlink->format != AV_PIX_FMT_GRAY8){
sws_src_h = sr_context->input.height;
sws_src_w = sr_context->input.width;
sws_dst_h = sr_context->output.height;
sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 2);
break;
default:
- av_log(context, AV_LOG_ERROR, "could not create SwsContext for input pixel format");
+ av_log(context, AV_LOG_ERROR, "could not create SwsContext for scaling for given input pixel format");
return AVERROR(EIO);
}
- sr_context->sws_context = sws_getContext(sws_src_w, sws_src_h, AV_PIX_FMT_GRAY8,
- sws_dst_w, sws_dst_h, AV_PIX_FMT_GRAY8, SWS_BICUBIC, NULL, NULL, NULL);
- if (!sr_context->sws_context){
- av_log(context, AV_LOG_ERROR, "could not create SwsContext\n");
+ sr_context->sws_contexts[0] = sws_getContext(sws_src_w, sws_src_h, AV_PIX_FMT_GRAY8,
+ sws_dst_w, sws_dst_h, AV_PIX_FMT_GRAY8,
+ SWS_BICUBIC, NULL, NULL, NULL);
+ if (!sr_context->sws_contexts[0]){
+ av_log(context, AV_LOG_ERROR, "could not create SwsContext for scaling\n");
return AVERROR(ENOMEM);
}
sr_context->sws_slice_h = sws_src_h;
}
}
-typedef struct ThreadData{
- uint8_t *data;
- int data_linesize, height, width;
-} ThreadData;
-
-static int uint8_to_float(AVFilterContext *context, void *arg, int jobnr, int nb_jobs)
-{
- SRContext *sr_context = context->priv;
- const ThreadData *td = arg;
- const int slice_start = (td->height * jobnr ) / nb_jobs;
- const int slice_end = (td->height * (jobnr + 1)) / nb_jobs;
- const uint8_t *src = td->data + slice_start * td->data_linesize;
- float *dst = sr_context->input.data + slice_start * td->width;
- int y, x;
-
- for (y = slice_start; y < slice_end; ++y){
- for (x = 0; x < td->width; ++x){
- dst[x] = (float)src[x] / 255.0f;
- }
- src += td->data_linesize;
- dst += td->width;
- }
-
- return 0;
-}
-
-static int float_to_uint8(AVFilterContext *context, void *arg, int jobnr, int nb_jobs)
-{
- SRContext *sr_context = context->priv;
- const ThreadData *td = arg;
- const int slice_start = (td->height * jobnr ) / nb_jobs;
- const int slice_end = (td->height * (jobnr + 1)) / nb_jobs;
- const float *src = sr_context->output.data + slice_start * td->width;
- uint8_t *dst = td->data + slice_start * td->data_linesize;
- int y, x;
-
- for (y = slice_start; y < slice_end; ++y){
- for (x = 0; x < td->width; ++x){
- dst[x] = (uint8_t)(255.0f * FFMIN(src[x], 1.0f));
- }
- src += td->width;
- dst += td->data_linesize;
- }
-
- return 0;
-}
-
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *context = inlink->dst;
SRContext *sr_context = context->priv;
AVFilterLink *outlink = context->outputs[0];
AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
- ThreadData td;
- int nb_threads;
DNNReturnType dnn_result;
if (!out){
av_frame_copy_props(out, in);
out->height = sr_context->output.height;
out->width = sr_context->output.width;
- switch (sr_context->model_type){
- case SRCNN:
- sws_scale(sr_context->sws_context, (const uint8_t **)in->data, in->linesize,
+ if (sr_context->scale_factor){
+ sws_scale(sr_context->sws_contexts[0], (const uint8_t **)in->data, in->linesize,
0, sr_context->sws_slice_h, out->data, out->linesize);
- td.data = out->data[0];
- td.data_linesize = out->linesize[0];
- td.height = out->height;
- td.width = out->width;
- break;
- case ESPCN:
- if (sr_context->sws_context){
- sws_scale(sr_context->sws_context, (const uint8_t **)(in->data + 1), in->linesize + 1,
+
+ sws_scale(sr_context->sws_contexts[1], (const uint8_t **)out->data, out->linesize,
+ 0, out->height, (uint8_t * const*)(&sr_context->input.data),
+ (const int [4]){sr_context->sws_input_linesize, 0, 0, 0});
+ }
+ else{
+ if (sr_context->sws_contexts[0]){
+ sws_scale(sr_context->sws_contexts[0], (const uint8_t **)(in->data + 1), in->linesize + 1,
0, sr_context->sws_slice_h, out->data + 1, out->linesize + 1);
- sws_scale(sr_context->sws_context, (const uint8_t **)(in->data + 2), in->linesize + 2,
+ sws_scale(sr_context->sws_contexts[0], (const uint8_t **)(in->data + 2), in->linesize + 2,
0, sr_context->sws_slice_h, out->data + 2, out->linesize + 2);
}
- td.data = in->data[0];
- td.data_linesize = in->linesize[0];
- td.height = in->height;
- td.width = in->width;
- }
- nb_threads = ff_filter_get_nb_threads(context);
- context->internal->execute(context, uint8_to_float, &td, NULL, FFMIN(td.height, nb_threads));
+ sws_scale(sr_context->sws_contexts[1], (const uint8_t **)in->data, in->linesize,
+ 0, in->height, (uint8_t * const*)(&sr_context->input.data),
+ (const int [4]){sr_context->sws_input_linesize, 0, 0, 0});
+ }
av_frame_free(&in);
dnn_result = (sr_context->dnn_module->execute_model)(sr_context->model);
return AVERROR(EIO);
}
- td.data = out->data[0];
- td.data_linesize = out->linesize[0];
- td.height = out->height;
- td.width = out->width;
- context->internal->execute(context, float_to_uint8, &td, NULL, FFMIN(td.height, nb_threads));
+ sws_scale(sr_context->sws_contexts[2], (const uint8_t *[4]){(const uint8_t *)sr_context->output.data, 0, 0, 0},
+ (const int[4]){sr_context->sws_output_linesize, 0, 0, 0},
+ 0, out->height, (uint8_t * const*)out->data, out->linesize);
return ff_filter_frame(outlink, out);
}
static av_cold void uninit(AVFilterContext *context)
{
+ int i;
SRContext *sr_context = context->priv;
if (sr_context->dnn_module){
av_freep(&sr_context->dnn_module);
}
- if (sr_context->sws_context){
- sws_freeContext(sr_context->sws_context);
+ for (i = 0; i < 3; ++i){
+ if (sr_context->sws_contexts[i]){
+ sws_freeContext(sr_context->sws_contexts[i]);
+ }
}
}
projects / ffmpeg / blobdiff