#include "formats.h"
#include "internal.h"
#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
#include "libavformat/avio.h"
#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;
+ DNNData input;
+ DNNData output;
int scale_factor;
struct SwsContext *sws_contexts[3];
int sws_slice_h, sws_input_linesize, sws_output_linesize;
#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" },
+ { "dnn_backend", "DNN backend used for model execution", OFFSET(backend_type), AV_OPT_TYPE_INT, { .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 }
};
av_log(context, AV_LOG_ERROR, "could not create DNN module for requested backend\n");
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);
}
+ 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->input.dt = DNN_FLOAT;
sr_context->sws_contexts[0] = NULL;
sr_context->sws_contexts[1] = NULL;
sr_context->sws_contexts[2] = NULL;
AVFilterLink *outlink = context->outputs[0];
DNNReturnType result;
int sws_src_h, sws_src_w, sws_dst_h, sws_dst_w;
+ const char *model_output_name = "y";
- 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);
+ result = (sr_context->model->set_input_output)(sr_context->model->model, &sr_context->input, "x", &model_output_name, 1);
if (result != DNN_SUCCESS){
av_log(context, AV_LOG_ERROR, "could not set input and output for the model\n");
return AVERROR(EIO);
}
- else{
- outlink->h = sr_context->output.height;
- outlink->w = sr_context->output.width;
- 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");
+
+ result = (sr_context->dnn_module->execute_model)(sr_context->model, &sr_context->output, 1);
+ if (result != DNN_SUCCESS){
+ av_log(context, AV_LOG_ERROR, "failed to execute loaded model\n");
+ return AVERROR(EIO);
+ }
+
+ 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, "x", &model_output_name, 1);
+ if (result != DNN_SUCCESS){
+ av_log(context, AV_LOG_ERROR, "could not set input and output for the model\n");
+ return AVERROR(EIO);
+ }
+ result = (sr_context->dnn_module->execute_model)(sr_context->model, &sr_context->output, 1);
+ if (result != DNN_SUCCESS){
+ av_log(context, AV_LOG_ERROR, "failed to execute loaded model\n");
+ return AVERROR(EIO);
+ }
+ sr_context->scale_factor = 0;
+ }
+ outlink->h = sr_context->output.height;
+ outlink->w = sr_context->output.width;
+ 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);
}
- switch (sr_context->model_type){
- case SRCNN:
- sr_context->sws_contexts[0] = sws_getContext(inlink->w, inlink->h, inlink->format,
- outlink->w, outlink->h, outlink->format,
+ sr_context->sws_slice_h = inlink->h;
+ } else {
+ if (inlink->format != AV_PIX_FMT_GRAY8){
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ sws_src_h = AV_CEIL_RSHIFT(sr_context->input.height, desc->log2_chroma_h);
+ sws_src_w = AV_CEIL_RSHIFT(sr_context->input.width, desc->log2_chroma_w);
+ sws_dst_h = AV_CEIL_RSHIFT(sr_context->output.height, desc->log2_chroma_h);
+ sws_dst_w = AV_CEIL_RSHIFT(sr_context->output.width, desc->log2_chroma_w);
+
+ 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 = inlink->h;
- break;
- case ESPCN:
- 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 = sr_context->output.width;
-
- switch (inlink->format){
- case AV_PIX_FMT_YUV420P:
- sws_src_h = AV_CEIL_RSHIFT(sws_src_h, 1);
- sws_src_w = AV_CEIL_RSHIFT(sws_src_w, 1);
- sws_dst_h = AV_CEIL_RSHIFT(sws_dst_h, 1);
- sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 1);
- break;
- case AV_PIX_FMT_YUV422P:
- sws_src_w = AV_CEIL_RSHIFT(sws_src_w, 1);
- sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 1);
- break;
- case AV_PIX_FMT_YUV444P:
- break;
- case AV_PIX_FMT_YUV410P:
- sws_src_h = AV_CEIL_RSHIFT(sws_src_h, 2);
- sws_src_w = AV_CEIL_RSHIFT(sws_src_w, 2);
- sws_dst_h = AV_CEIL_RSHIFT(sws_dst_h, 2);
- sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 2);
- break;
- case AV_PIX_FMT_YUV411P:
- sws_src_w = AV_CEIL_RSHIFT(sws_src_w, 2);
- sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 2);
- break;
- default:
- av_log(context, AV_LOG_ERROR, "could not create SwsContext for scaling for given input pixel format");
- return AVERROR(EIO);
- }
- 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;
- }
+ sr_context->sws_slice_h = sws_src_h;
}
-
- return 0;
}
+
+ return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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:
+ 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);
sws_scale(sr_context->sws_contexts[1], (const uint8_t **)out->data, out->linesize,
- 0, out->height, (uint8_t * const*)(&sr_context->input.data), &sr_context->sws_input_linesize);
- break;
- case ESPCN:
+ 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_contexts[1], (const uint8_t **)in->data, in->linesize,
- 0, in->height, (uint8_t * const*)(&sr_context->input.data), &sr_context->sws_input_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);
+ dnn_result = (sr_context->dnn_module->execute_model)(sr_context->model, &sr_context->output, 1);
if (dnn_result != DNN_SUCCESS){
av_log(context, AV_LOG_ERROR, "failed to execute loaded model\n");
return AVERROR(EIO);
}
- sws_scale(sr_context->sws_contexts[2], (const uint8_t **)(&sr_context->output.data), &sr_context->sws_output_linesize,
+ 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);
}
for (i = 0; i < 3; ++i){
- if (sr_context->sws_contexts[i]){
- sws_freeContext(sr_context->sws_contexts[i]);
- }
+ sws_freeContext(sr_context->sws_contexts[i]);
}
}
.inputs = sr_inputs,
.outputs = sr_outputs,
.priv_class = &sr_class,
- .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
};
-
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