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libavfilter/vf_sr.c: Removes uint8 -> float and float -> uint8 conversions. 

Signed-off-by: Pedro Arthur <bygrandao@gmail.com>
This commit is contained in:
Sergey Lavrushkin 2018-07-31 18:58:28 +03:00 committed by Pedro Arthur
parent 2ecf9d103a
commit 95cb2127ad
1 changed files with 48 additions and 86 deletions
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134
libavfilter/vf_sr.c
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@ -45,8 +45,8 @@ typedef struct SRContext {
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)
@ -95,6 +95,10 @@ static av_cold int init(AVFilterContext *context)
return AVERROR(EIO);
}
sr_context->sws_contexts[0] = NULL;
sr_context->sws_contexts[1] = NULL;
sr_context->sws_contexts[2] = NULL;
return 0;
}
@ -110,6 +114,7 @@ static int query_formats(AVFilterContext *context)
av_log(context, AV_LOG_ERROR, "could not create formats list\n");
return AVERROR(ENOMEM);
}
return ff_set_common_formats(context, formats_list);
}
@ -140,21 +145,31 @@ static int config_props(AVFilterLink *inlink)
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");
return AVERROR(ENOMEM);
}
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[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{
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;
@ -184,13 +199,14 @@ static int config_props(AVFilterLink *inlink)
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;
@ -201,61 +217,12 @@ static int config_props(AVFilterLink *inlink)
}
}
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){
@ -268,28 +235,23 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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,
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;
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:
if (sr_context->sws_context){
sws_scale(sr_context->sws_context, (const uint8_t **)(in->data + 1), in->linesize + 1,
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), &sr_context->sws_input_linesize);
}
av_frame_free(&in);
dnn_result = (sr_context->dnn_module->execute_model)(sr_context->model);
@ -298,17 +260,15 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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 **)(&sr_context->output.data), &sr_context->sws_output_linesize,
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){
@ -316,8 +276,10 @@ static av_cold void uninit(AVFilterContext *context)
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]);
}
}
}