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plplay.c
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/* Very basic video player based on ffmpeg. All it does is render a single
* video stream to completion, and then exits. It exits on most errors, rather
* than gracefully trying to recreate the context.
*
* The timing code is also rather naive, due to the current lack of
* presentation feedback. That being said, an effort is made to time the video
* stream to the system clock, using frame mixing for mismatches.
*
* License: CC0 / Public Domain
*/
#include <pthread.h>
#include <libgen.h>
#include <libavutil/cpu.h>
#include <libavutil/file.h>
#include <libavutil/pixdesc.h>
#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
#include "common.h"
#include "utils.h"
#include "window.h"
#ifdef HAVE_NUKLEAR
#include "ui.h"
#else
struct ui;
static void ui_destroy(struct ui **ui) {}
static bool ui_draw(struct ui *ui, const struct pl_swapchain_frame *frame) { return true; };
#endif
#include <libplacebo/renderer.h>
#include <libplacebo/shaders/lut.h>
#include <libplacebo/utils/libav.h>
#include <libplacebo/utils/frame_queue.h>
#define MAX_FRAME_PASSES 256
#define MAX_BLEND_FRAMES 8
struct pass_info {
struct pl_dispatch_info pass;
char *name;
};
struct plplay {
struct window *win;
struct ui *ui;
// libplacebo
pl_log log;
pl_renderer renderer;
pl_queue queue;
// libav*
AVFormatContext *format;
AVCodecContext *codec;
const AVStream *stream; // points to first video stream of `format`
pthread_t decoder_thread;
bool decoder_thread_created;
bool exit_thread;
// settings / ui state
const struct pl_filter_preset *upscaler, *downscaler, *frame_mixer;
struct pl_render_params params;
struct pl_deband_params deband_params;
struct pl_sigmoid_params sigmoid_params;
struct pl_color_adjustment color_adjustment;
struct pl_peak_detect_params peak_detect_params;
struct pl_color_map_params color_map_params;
struct pl_dither_params dither_params;
struct pl_icc_params icc_params;
struct pl_cone_params cone_params;
struct pl_color_space target_color;
struct pl_color_repr target_repr;
struct pl_icc_profile target_icc;
char *target_icc_name;
pl_rotation target_rot;
bool target_override;
bool levels_override;
bool ignore_dovi;
// custom shaders
const struct pl_hook **shader_hooks;
char **shader_paths;
size_t shader_num;
size_t shader_size;
// pass metadata
struct pass_info blend_info[MAX_BLEND_FRAMES];
struct pass_info frame_info[MAX_FRAME_PASSES];
int num_frame_passes;
};
static void uninit(struct plplay *p)
{
if (p->decoder_thread_created) {
p->exit_thread = true;
pl_queue_push(p->queue, NULL); // Signal EOF to wake up thread
pthread_join(p->decoder_thread, NULL);
}
pl_queue_destroy(&p->queue);
pl_renderer_destroy(&p->renderer);
for (int i = 0; i < p->shader_num; i++) {
pl_mpv_user_shader_destroy(&p->shader_hooks[i]);
free(p->shader_paths[i]);
}
free(p->shader_hooks);
free(p->shader_paths);
free(p->target_icc_name);
av_file_unmap((void *) p->target_icc.data, p->target_icc.len);
// Free this before destroying the window to release associated GPU buffers
avcodec_free_context(&p->codec);
avformat_free_context(p->format);
ui_destroy(&p->ui);
window_destroy(&p->win);
pl_log_destroy(&p->log);
memset(p, 0, sizeof(*p));
}
static bool open_file(struct plplay *p, const char *filename)
{
printf("Opening file: '%s'\n", filename);
if (avformat_open_input(&p->format, filename, NULL, NULL) != 0) {
fprintf(stderr, "libavformat: Failed opening file!\n");
return false;
}
printf("Format: %s\n", p->format->iformat->name);
printf("Duration: %.3f s\n", p->format->duration / 1e6);
if (avformat_find_stream_info(p->format, NULL) < 0) {
fprintf(stderr, "libavformat: Failed finding stream info!\n");
return false;
}
// Find "best" video stream
int stream_idx =
av_find_best_stream(p->format, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
if (stream_idx < 0) {
fprintf(stderr, "plplay: File contains no video streams?\n");
return false;
}
const AVStream *stream = p->format->streams[stream_idx];
const AVCodecParameters *par = stream->codecpar;
printf("Found video track (stream %d)\n", stream_idx);
printf("Resolution: %d x %d\n", par->width, par->height);
printf("FPS: %f\n", av_q2d(stream->avg_frame_rate));
printf("Bitrate: %"PRIi64" kbps\n", par->bit_rate / 1000);
printf("Format: %s\n", av_get_pix_fmt_name(par->format));
p->stream = stream;
return true;
}
static inline bool is_file_hdr(struct plplay *p)
{
assert(p->stream);
enum AVColorTransferCharacteristic trc = p->stream->codecpar->color_trc;
if (pl_color_transfer_is_hdr(pl_transfer_from_av(trc)))
return true;
#if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(57, 16, 100)
if (av_stream_get_side_data(p->stream, AV_PKT_DATA_DOVI_CONF, NULL))
return true;
#endif
return false;
}
static bool init_codec(struct plplay *p)
{
assert(p->stream);
assert(p->win->gpu);
const AVCodec *codec = avcodec_find_decoder(p->stream->codecpar->codec_id);
if (!codec) {
fprintf(stderr, "libavcodec: Failed finding matching codec\n");
return false;
}
p->codec = avcodec_alloc_context3(codec);
if (!p->codec) {
fprintf(stderr, "libavcodec: Failed allocating codec\n");
return false;
}
if (avcodec_parameters_to_context(p->codec, p->stream->codecpar) < 0) {
fprintf(stderr, "libavcodec: Failed copying codec parameters to codec\n");
return false;
}
printf("Codec: %s (%s)\n", codec->name, codec->long_name);
const AVCodecHWConfig *hwcfg;
for (int i = 0; (hwcfg = avcodec_get_hw_config(codec, i)); i++) {
if (!pl_test_pixfmt(p->win->gpu, hwcfg->pix_fmt))
continue;
if (!(hwcfg->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX))
continue;
int ret = av_hwdevice_ctx_create(&p->codec->hw_device_ctx,
hwcfg->device_type,
NULL, NULL, 0);
if (ret < 0) {
fprintf(stderr, "libavcodec: Failed opening HW device context, skipping\n");
continue;
}
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(hwcfg->pix_fmt);
printf("Using hardware frame format: %s\n", desc->name);
break;
}
if (!hwcfg)
printf("Using software decoding\n");
p->codec->thread_count = av_cpu_count();
p->codec->get_buffer2 = pl_get_buffer2;
p->codec->opaque = &p->win->gpu;
#if LIBAVCODEC_VERSION_MAJOR < 60
AV_NOWARN_DEPRECATED({
p->codec->thread_safe_callbacks = 1;
});
#endif
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(58, 113, 100)
p->codec->export_side_data |= AV_CODEC_EXPORT_DATA_FILM_GRAIN;
#endif
if (avcodec_open2(p->codec, codec, NULL) < 0) {
fprintf(stderr, "libavcodec: Failed opening codec\n");
return false;
}
return true;
}
static bool map_frame(pl_gpu gpu, pl_tex *tex,
const struct pl_source_frame *src,
struct pl_frame *out_frame)
{
AVFrame *frame = src->frame_data;
struct plplay *p = frame->opaque;
bool ok = pl_map_avframe_ex(gpu, out_frame, pl_avframe_params(
.frame = frame,
.tex = tex,
.map_dovi = !p->ignore_dovi,
));
av_frame_free(&frame); // references are preserved by `out_frame`
if (!ok) {
fprintf(stderr, "Failed mapping AVFrame!\n");
return false;
}
pl_frame_copy_stream_props(out_frame, p->stream);
return true;
}
static void unmap_frame(pl_gpu gpu, struct pl_frame *frame,
const struct pl_source_frame *src)
{
pl_unmap_avframe(gpu, frame);
}
static void discard_frame(const struct pl_source_frame *src)
{
AVFrame *frame = src->frame_data;
av_frame_free(&frame);
printf("Dropped frame with PTS %.3f\n", src->pts);
}
static void *decode_loop(void *arg)
{
int ret;
struct plplay *p = arg;
AVPacket *packet = av_packet_alloc();
AVFrame *frame = av_frame_alloc();
if (!frame || !packet)
goto done;
double first_pts = 0.0, base_pts = 0.0, last_pts = 0.0;
uint64_t num_frames = 0;
while (!p->exit_thread) {
switch ((ret = av_read_frame(p->format, packet))) {
case 0:
if (packet->stream_index != p->stream->index) {
// Ignore unrelated packets
av_packet_unref(packet);
continue;
}
ret = avcodec_send_packet(p->codec, packet);
av_packet_unref(packet);
break;
case AVERROR_EOF:
// Send empty input to flush decoder
ret = avcodec_send_packet(p->codec, NULL);
break;
default:
fprintf(stderr, "libavformat: Failed reading packet: %s\n",
av_err2str(ret));
goto done;
}
if (ret < 0) {
fprintf(stderr, "libavcodec: Failed sending packet to decoder: %s\n",
av_err2str(ret));
goto done;
}
// Decode all frames from this packet
while ((ret = avcodec_receive_frame(p->codec, frame)) == 0) {
last_pts = frame->pts * av_q2d(p->stream->time_base);
if (num_frames++ == 0)
first_pts = last_pts;
frame->opaque = p;
pl_queue_push_block(p->queue, UINT64_MAX, &(struct pl_source_frame) {
.pts = last_pts - first_pts + base_pts,
.map = map_frame,
.unmap = unmap_frame,
.discard = discard_frame,
.frame_data = frame,
});
frame = av_frame_alloc();
}
switch (ret) {
case AVERROR(EAGAIN):
continue;
case AVERROR_EOF:
if (num_frames <= 1)
goto done; // still image or empty file
// loop infinitely
ret = av_seek_frame(p->format, p->stream->index, 0, AVSEEK_FLAG_BACKWARD);
if (ret < 0) {
fprintf(stderr, "libavformat: Failed seeking in stream: %s\n",
av_err2str(ret));
goto done;
}
avcodec_flush_buffers(p->codec);
base_pts += last_pts;
num_frames = 0;
continue;
default:
fprintf(stderr, "libavcodec: Failed decoding frame: %s\n",
av_err2str(ret));
goto done;
}
}
done:
pl_queue_push(p->queue, NULL); // Signal EOF to flush queue
av_packet_free(&packet);
av_frame_free(&frame);
return NULL;
}
static void update_settings(struct plplay *p);
static void update_colorspace_hint(struct plplay *p, const struct pl_frame_mix *mix)
{
const struct pl_frame *frame = NULL;
for (int i = 0; i < mix->num_frames; i++) {
if (mix->timestamps[i] > 0.0)
break;
frame = mix->frames[i];
}
if (!frame)
return;
struct pl_swapchain_colors hint;
pl_swapchain_colors_from_avframe(&hint, frame->user_data);
pl_swapchain_colorspace_hint(p->win->swapchain, &hint);
}
static bool render_frame(struct plplay *p, const struct pl_swapchain_frame *frame,
const struct pl_frame_mix *mix)
{
struct pl_frame target;
pl_frame_from_swapchain(&target, frame);
update_settings(p);
// Update the global settings based on this swapchain frame, then use those
pl_color_space_merge(&p->target_color, &target.color);
pl_color_repr_merge(&p->target_repr, &target.repr);
if (p->target_override) {
target.color = p->target_color;
target.repr = p->target_repr;
target.profile = p->target_icc;
}
assert(mix->num_frames);
const AVFrame *avframe = mix->frames[0]->user_data;
double dar = pl_rect2df_aspect(&mix->frames[0]->crop);
if (avframe->sample_aspect_ratio.num)
dar *= av_q2d(avframe->sample_aspect_ratio);
target.rotation = p->target_rot;
pl_rect2df_aspect_set_rot(&target.crop, dar,
mix->frames[0]->rotation - target.rotation,
0.0);
if (!pl_render_image_mix(p->renderer, mix, &target, &p->params))
return false;
if (!ui_draw(p->ui, frame))
return false;
return true;
}
static bool render_loop(struct plplay *p)
{
struct pl_queue_params qparams = {
.radius = pl_frame_mix_radius(&p->params),
.frame_duration = av_q2d(av_inv_q(p->stream->avg_frame_rate)),
.interpolation_threshold = 0.01,
.timeout = UINT64_MAX,
};
// Initialize the frame queue, blocking indefinitely until done
struct pl_frame_mix mix;
switch (pl_queue_update(p->queue, &mix, &qparams)) {
case PL_QUEUE_OK: break;
case PL_QUEUE_EOF: return true;
case PL_QUEUE_ERR: goto error;
default: abort();
}
struct pl_swapchain_frame frame;
update_colorspace_hint(p, &mix);
if (!pl_swapchain_start_frame(p->win->swapchain, &frame))
goto error;
// Disable background transparency by default if the swapchain does not
// appear to support alpha transaprency
if (frame.color_repr.alpha == PL_ALPHA_UNKNOWN)
p->params.background_transparency = 0.0;
if (!render_frame(p, &frame, &mix))
goto error;
if (!pl_swapchain_submit_frame(p->win->swapchain))
goto error;
// Wait until rendering is complete. Do this before measuring the time
// start, to ensure we don't count initialization overhead as part of the
// first vsync.
pl_gpu_finish(p->win->gpu);
double ts, ts_prev;
if (!utils_gettime(&ts_prev))
goto error;
pl_swapchain_swap_buffers(p->win->swapchain);
window_poll(p->win, false);
double pts = 0.0;
bool stuck = false;
while (!p->win->window_lost) {
if (window_get_key(p->win, KEY_ESC))
break;
update_colorspace_hint(p, &mix);
if (!pl_swapchain_start_frame(p->win->swapchain, &frame)) {
// Window stuck/invisible? Block for events and try again.
window_poll(p->win, true);
continue;
}
retry:
if (!utils_gettime(&ts))
goto error;
if (!stuck) {
pts += (ts - ts_prev);
}
ts_prev = ts;
qparams.timeout = 50000000; // 50 ms
qparams.pts = pts;
switch (pl_queue_update(p->queue, &mix, &qparams)) {
case PL_QUEUE_ERR: goto error;
case PL_QUEUE_EOF: return true;
case PL_QUEUE_OK:
if (!render_frame(p, &frame, &mix))
goto error;
stuck = false;
break;
case PL_QUEUE_MORE:
stuck = true;
goto retry;
}
if (!pl_swapchain_submit_frame(p->win->swapchain)) {
fprintf(stderr, "libplacebo: failed presenting frame!\n");
goto error;
}
pl_swapchain_swap_buffers(p->win->swapchain);
window_poll(p->win, false);
}
return true;
error:
fprintf(stderr, "Render loop failed, exiting early...\n");
return false;
}
static void info_callback(void *priv, const struct pl_render_info *info)
{
struct plplay *p = priv;
struct pass_info *pass = NULL;
switch (info->stage) {
case PL_RENDER_STAGE_FRAME:
if (info->index >= MAX_FRAME_PASSES)
return;
p->num_frame_passes = info->index + 1;
pass = &p->frame_info[info->index];
break;
case PL_RENDER_STAGE_BLEND:
if (info->index >= MAX_BLEND_FRAMES)
return;
pass = &p->blend_info[info->index];
break;
case PL_RENDER_STAGE_COUNT: abort();
}
free(pass->name);
pass->name = strdup(info->pass->shader->description);
pass->pass = *info->pass;
}
static struct plplay state;
int main(int argc, char **argv)
{
const char *filename;
enum pl_log_level log_level = PL_LOG_INFO;
if (argc == 3 && strcmp(argv[1], "-v") == 0) {
filename = argv[2];
log_level = PL_LOG_DEBUG;
av_log_set_level(AV_LOG_VERBOSE);
} else if (argc == 2) {
filename = argv[1];
av_log_set_level(AV_LOG_INFO);
} else {
fprintf(stderr, "Usage: ./%s [-v] <filename>\n", argv[0]);
return -1;
}
state = (struct plplay) {
.params = pl_render_default_params,
.deband_params = pl_deband_default_params,
.sigmoid_params = pl_sigmoid_default_params,
.color_adjustment = pl_color_adjustment_neutral,
.peak_detect_params = pl_peak_detect_default_params,
.color_map_params = pl_color_map_default_params,
.dither_params = pl_dither_default_params,
.icc_params = pl_icc_default_params,
.cone_params = pl_vision_normal,
.target_override = true,
};
// Redirect all of the pointers in `params.default` to instead point to the
// structs inside `struct plplay`, so we can adjust them using the UI
#define DEFAULT_PARAMS(field) \
state.params.field = state.params.field ? &state.field : NULL
DEFAULT_PARAMS(deband_params);
DEFAULT_PARAMS(sigmoid_params);
DEFAULT_PARAMS(peak_detect_params);
DEFAULT_PARAMS(dither_params);
state.params.color_adjustment = &state.color_adjustment;
state.params.color_map_params = &state.color_map_params;
state.params.cone_params = &state.cone_params;
state.params.icc_params = &state.icc_params;
// Enable dynamic parameters by default, due to plplay's heavy reliance on
// GUI controls for dynamically adjusting render parameters.
state.params.dynamic_constants = true;
// Hook up our pass info callback
state.params.info_callback = info_callback;
state.params.info_priv = &state;
struct plplay *p = &state;
if (!open_file(p, filename))
goto error;
const AVCodecParameters *par = p->stream->codecpar;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(par->format);
if (!desc)
goto error;
struct window_params params = {
.title = "plplay",
.width = par->width,
.height = par->height,
.colors = {
.primaries = pl_primaries_from_av(par->color_primaries),
.transfer = pl_transfer_from_av(par->color_trc),
// HDR metadata will come from AVFrame side data
},
};
if (desc->flags & AV_PIX_FMT_FLAG_ALPHA) {
params.alpha = true;
state.params.background_transparency = 1.0;
}
p->log = pl_log_create(PL_API_VER, pl_log_params(
.log_cb = pl_log_color,
.log_level = log_level,
));
p->win = window_create(p->log, ¶ms);
if (!p->win)
goto error;
// Test the AVPixelFormat against the GPU capabilities
if (!pl_test_pixfmt(p->win->gpu, par->format)) {
fprintf(stderr, "Unsupported AVPixelFormat: %s\n", desc->name);
goto error;
}
#ifdef HAVE_NUKLEAR
p->ui = ui_create(p->win->gpu);
if (!p->ui)
goto error;
// Find the right named filter entries for the defaults
const struct pl_filter_preset *f;
for (f = pl_scale_filters; f->name; f++) {
if (p->params.upscaler == f->filter)
p->upscaler = f;
if (p->params.downscaler == f->filter)
p->downscaler = f;
}
for (f = pl_frame_mixers; f->name; f++) {
if (p->params.frame_mixer == f->filter)
p->frame_mixer = f;
}
assert(p->upscaler && p->downscaler && p->frame_mixer);
#endif
if (!init_codec(p))
goto error;
p->queue = pl_queue_create(p->win->gpu);
int ret = pthread_create(&p->decoder_thread, NULL, decode_loop, p);
if (ret != 0) {
fprintf(stderr, "Failed creating decode thread: %s\n", strerror(errno));
goto error;
}
p->decoder_thread_created = true;
p->renderer = pl_renderer_create(p->log, p->win->gpu);
if (!render_loop(p))
goto error;
printf("Exiting...\n");
uninit(p);
return 0;
error:
uninit(p);
return 1;
}
#ifdef HAVE_NUKLEAR
static void add_hook(struct plplay *p, const struct pl_hook *hook, const char *path)
{
if (!hook)
return;
if (p->shader_num == p->shader_size) {
// Grow array if needed
size_t new_size = p->shader_size ? p->shader_size * 2 : 16;
void *new_hooks = realloc(p->shader_hooks, new_size * sizeof(void *));
if (!new_hooks)
goto error;
p->shader_hooks = new_hooks;
char **new_paths = realloc(p->shader_paths, new_size * sizeof(char *));
if (!new_paths)
goto error;
p->shader_paths = new_paths;
p->shader_size = new_size;
}
// strip leading path
while (true) {
const char *fname = strchr(path, '/');
if (!fname)
break;
path = fname + 1;
}
char *path_copy = strdup(path);
if (!path_copy)
goto error;
p->shader_hooks[p->shader_num] = hook;
p->shader_paths[p->shader_num] = path_copy;
p->shader_num++;
return;
error:
pl_mpv_user_shader_destroy(&hook);
}
static void update_settings(struct plplay *p)
{
struct nk_context *nk = ui_get_context(p->ui);
enum nk_panel_flags win_flags = NK_WINDOW_BORDER | NK_WINDOW_MOVABLE |
NK_WINDOW_SCALABLE | NK_WINDOW_MINIMIZABLE |
NK_WINDOW_TITLE;
ui_update_input(p->ui, p->win);
const char *dropped_file = window_get_file(p->win);
struct pl_render_params *par = &p->params;
if (nk_begin(nk, "Settings", nk_rect(100, 100, 600, 600), win_flags)) {
if (nk_tree_push(nk, NK_TREE_NODE, "Window settings", NK_MAXIMIZED)) {
struct nk_colorf bg = {
par->background_color[0],
par->background_color[1],
par->background_color[2],
1.0 - par->background_transparency,
};
nk_layout_row_dynamic(nk, 24, 2);
nk_label(nk, "Background color:", NK_TEXT_LEFT);
if (nk_combo_begin_color(nk, nk_rgb_cf(bg), nk_vec2(nk_widget_width(nk), 300))) {
nk_layout_row_dynamic(nk, 200, 1);
nk_color_pick(nk, &bg, NK_RGBA);
nk_combo_end(nk);
par->background_color[0] = bg.r;
par->background_color[1] = bg.g;
par->background_color[2] = bg.b;
par->background_transparency = 1.0 - bg.a;
}
nk_layout_row_dynamic(nk, 24, 2);
par->blend_against_tiles = nk_check_label(nk, "Blend against tiles", par->blend_against_tiles);
nk_property_int(nk, "Tile size", 2, &par->tile_size, 256, 1, 1);
nk_layout_row(nk, NK_DYNAMIC, 24, 3, (float[]){ 0.4, 0.3, 0.3 });
nk_label(nk, "Tile colors:", NK_TEXT_LEFT);
for (int i = 0; i < 2; i++) {
bg = (struct nk_colorf) {
par->tile_colors[i][0],
par->tile_colors[i][1],
par->tile_colors[i][2],
};
if (nk_combo_begin_color(nk, nk_rgb_cf(bg), nk_vec2(nk_widget_width(nk), 300))) {
nk_layout_row_dynamic(nk, 200, 1);
nk_color_pick(nk, &bg, NK_RGB);
nk_combo_end(nk);
par->tile_colors[i][0] = bg.r;
par->tile_colors[i][1] = bg.g;
par->tile_colors[i][2] = bg.b;
}
}
static const char *rotations[4] = {
[PL_ROTATION_0] = "0°",
[PL_ROTATION_90] = "90°",
[PL_ROTATION_180] = "180°",
[PL_ROTATION_270] = "270°",
};
nk_layout_row_dynamic(nk, 24, 2);
nk_label(nk, "Display orientation:", NK_TEXT_LEFT);
p->target_rot = nk_combo(nk, rotations, 4, p->target_rot,
16, nk_vec2(nk_widget_width(nk), 100));
nk_tree_pop(nk);
}
if (nk_tree_push(nk, NK_TREE_NODE, "Image scaling", NK_MAXIMIZED)) {
const struct pl_filter_preset *f;
nk_layout_row(nk, NK_DYNAMIC, 24, 2, (float[]){ 0.3, 0.7 });
nk_label(nk, "Upscaler:", NK_TEXT_LEFT);
if (nk_combo_begin_label(nk, p->upscaler->description, nk_vec2(nk_widget_width(nk), 500))) {
nk_layout_row_dynamic(nk, 16, 1);
for (f = pl_scale_filters; f->name; f++) {
if (!f->description)
continue;
if (nk_combo_item_label(nk, f->description, NK_TEXT_LEFT))
p->upscaler = f;
}
par->upscaler = p->upscaler->filter;
nk_combo_end(nk);
}
nk_label(nk, "Downscaler:", NK_TEXT_LEFT);
if (nk_combo_begin_label(nk, p->downscaler->description, nk_vec2(nk_widget_width(nk), 500))) {
nk_layout_row_dynamic(nk, 16, 1);
for (f = pl_scale_filters; f->name; f++) {
if (!f->description)
continue;
if (nk_combo_item_label(nk, f->description, NK_TEXT_LEFT))
p->downscaler = f;
}
par->downscaler = p->downscaler->filter;
nk_combo_end(nk);
}
nk_label(nk, "Frame mixing:", NK_TEXT_LEFT);
if (nk_combo_begin_label(nk, p->frame_mixer->description, nk_vec2(nk_widget_width(nk), 300))) {
nk_layout_row_dynamic(nk, 16, 1);
for (f = pl_frame_mixers; f->name; f++) {
if (!f->description)
continue;
if (nk_combo_item_label(nk, f->description, NK_TEXT_LEFT))
p->frame_mixer = f;
}
par->frame_mixer = p->frame_mixer->filter;
nk_combo_end(nk);
}
nk_layout_row_dynamic(nk, 24, 2);
par->skip_anti_aliasing = !nk_check_label(nk, "Anti-aliasing", !par->skip_anti_aliasing);
nk_property_float(nk, "Antiringing", 0, &par->antiringing_strength, 1.0, 0.1, 0.01);
nk_property_int(nk, "LUT precision", 0, &par->lut_entries, 256, 1, 1);
float cutoff = par->polar_cutoff * 100.0;
nk_property_float(nk, "Polar cutoff (%)", 0.0, &cutoff, 100.0, 0.1, 0.01);
par->polar_cutoff = cutoff / 100.0;
struct pl_sigmoid_params *spar = &p->sigmoid_params;
nk_layout_row_dynamic(nk, 24, 2);
par->sigmoid_params = nk_check_label(nk, "Sigmoidization", par->sigmoid_params) ? spar : NULL;
if (nk_button_label(nk, "Default values"))
*spar = pl_sigmoid_default_params;
nk_property_float(nk, "Sigmoid center", 0, &spar->center, 1, 0.1, 0.01);
nk_property_float(nk, "Sigmoid slope", 0, &spar->slope, 100, 1, 0.1);
nk_tree_pop(nk);
}
if (nk_tree_push(nk, NK_TREE_NODE, "Debanding", NK_MINIMIZED)) {
struct pl_deband_params *dpar = &p->deband_params;
nk_layout_row_dynamic(nk, 24, 2);
par->deband_params = nk_check_label(nk, "Enable", par->deband_params) ? dpar : NULL;
if (nk_button_label(nk, "Reset settings"))
*dpar = pl_deband_default_params;
nk_property_int(nk, "Iterations", 0, &dpar->iterations, 8, 1, 0);
nk_property_float(nk, "Threshold", 0, &dpar->threshold, 256, 1, 0.5);
nk_property_float(nk, "Radius", 0, &dpar->radius, 256, 1, 0.2);
nk_property_float(nk, "Grain", 0, &dpar->grain, 512, 1, 0.5);
nk_tree_pop(nk);
}
if (nk_tree_push(nk, NK_TREE_NODE, "Color adjustment", NK_MINIMIZED)) {
struct pl_color_adjustment *adj = &p->color_adjustment;
nk_layout_row_dynamic(nk, 24, 2);
par->color_adjustment = nk_check_label(nk, "Enable", par->color_adjustment) ? adj : NULL;
if (nk_button_label(nk, "Default values"))
*adj = pl_color_adjustment_neutral;
nk_property_float(nk, "Brightness", -1, &adj->brightness, 1, 0.1, 0.005);
nk_property_float(nk, "Contrast", 0, &adj->contrast, 10, 0.1, 0.005);
// Convert to (cyclical) degrees for display
int deg = roundf(adj->hue * 180.0 / M_PI);
nk_property_int(nk, "Hue (°)", -50, °, 400, 1, 1);
adj->hue = ((deg + 360) % 360) * M_PI / 180.0;
nk_property_float(nk, "Saturation", 0, &adj->saturation, 10, 0.1, 0.005);
nk_property_float(nk, "Gamma", 0, &adj->gamma, 10, 0.1, 0.005);
// Convert to human-friendly temperature values for display
int temp = (int) roundf(adj->temperature * 3500) + 6500;
nk_property_int(nk, "Temperature (K)", 3000, &temp, 10000, 10, 5);
adj->temperature = (temp - 6500) / 3500.0;
struct pl_cone_params *cpar = &p->cone_params;
nk_layout_row_dynamic(nk, 24, 2);
par->cone_params = nk_check_label(nk, "Color blindness", par->cone_params) ? cpar : NULL;
if (nk_button_label(nk, "Default values"))
*cpar = pl_vision_normal;
nk_layout_row(nk, NK_DYNAMIC, 24, 5, (float[]){ 0.25, 0.25/3, 0.25/3, 0.25/3, 0.5 });
nk_label(nk, "Cone model:", NK_TEXT_LEFT);
unsigned int cones = cpar->cones;
nk_checkbox_flags_label(nk, "L", &cones, PL_CONE_L);
nk_checkbox_flags_label(nk, "M", &cones, PL_CONE_M);
nk_checkbox_flags_label(nk, "S", &cones, PL_CONE_S);
cpar->cones = cones;
nk_property_float(nk, "Sensitivity", 0.0, &cpar->strength, 5.0, 0.1, 0.01);
nk_tree_pop(nk);
}
if (is_file_hdr(p)) {
if (nk_tree_push(nk, NK_TREE_NODE, "HDR peak detection", NK_MINIMIZED)) {
struct pl_peak_detect_params *ppar = &p->peak_detect_params;
nk_layout_row_dynamic(nk, 24, 2);
par->peak_detect_params = nk_check_label(nk, "Enable", par->peak_detect_params) ? ppar : NULL;
if (nk_button_label(nk, "Reset settings"))
*ppar = pl_peak_detect_default_params;
nk_property_float(nk, "Threshold low", 0.0, &ppar->scene_threshold_low, 20.0, 0.5, 0.005);
nk_property_float(nk, "Threshold high", 0.0, &ppar->scene_threshold_high, 20.0, 0.5, 0.005);
nk_property_float(nk, "Smoothing period", 1.0, &ppar->smoothing_period, 1000.0, 5.0, 1.0);
nk_property_float(nk, "Minimum peak", 0.0, &ppar->minimum_peak, 10.0, 0.1, 0.01);
int overshoot = roundf(ppar->overshoot_margin * 100.0);
nk_property_int(nk, "Overshoot (%)", 0, &overshoot, 200, 1, 1);
ppar->overshoot_margin = overshoot / 100.0;
nk_tree_pop(nk);
}
}
if (nk_tree_push(nk, NK_TREE_NODE, "Tone mapping", NK_MINIMIZED)) {
struct pl_color_map_params *cpar = &p->color_map_params;
static const struct pl_color_map_params null_settings = {0};
nk_layout_row_dynamic(nk, 24, 2);
par->color_map_params = nk_check_label(nk, "Enable",
par->color_map_params == cpar) ? cpar : &null_settings;
if (nk_button_label(nk, "Reset settings"))
*cpar = pl_color_map_default_params;
static const char *rendering_intents[4] = {
[PL_INTENT_PERCEPTUAL] = "Perceptual",
[PL_INTENT_RELATIVE_COLORIMETRIC] = "Relative colorimetric",
[PL_INTENT_SATURATION] = "Saturation",
[PL_INTENT_ABSOLUTE_COLORIMETRIC] = "Absolute colorimetric",
};
nk_label(nk, "Rendering intent:", NK_TEXT_LEFT);
cpar->intent = nk_combo(nk, rendering_intents, 4, cpar->intent,
16, nk_vec2(nk_widget_width(nk), 100));
static const char *gamut_modes[PL_GAMUT_MODE_COUNT] = {
[PL_GAMUT_CLIP] = "Hard-clip",
[PL_GAMUT_WARN] = "Highlight",
[PL_GAMUT_DARKEN] = "Darken",
[PL_GAMUT_DESATURATE] = "Desaturate",
};
nk_label(nk, "Out-of-gamut handling:", NK_TEXT_LEFT);
cpar->gamut_mode = nk_combo(nk, gamut_modes,
PL_GAMUT_MODE_COUNT,
cpar->gamut_mode,
16, nk_vec2(nk_widget_width(nk), 300));
nk_label(nk, "Tone mapping function:", NK_TEXT_LEFT);
if (nk_combo_begin_label(nk, cpar->tone_mapping_function->description,
nk_vec2(nk_widget_width(nk), 500)))
{
nk_layout_row_dynamic(nk, 16, 1);
for (int i = 0; i < pl_num_tone_map_functions; i++) {
const struct pl_tone_map_function *f = pl_tone_map_functions[i];
if (nk_combo_item_label(nk, f->description, NK_TEXT_LEFT)) {
if (f != cpar->tone_mapping_function)
cpar->tone_mapping_param = f->param_def;
cpar->tone_mapping_function = f;
}
}
nk_combo_end(nk);
}
static const char *tone_mapping_modes[PL_TONE_MAP_MODE_COUNT] = {
[PL_TONE_MAP_AUTO] = "Automatic selection",
[PL_TONE_MAP_RGB] = "Per-channel (RGB)",
[PL_TONE_MAP_MAX] = "Maximum component",
[PL_TONE_MAP_HYBRID] = "Hybrid luminance",
[PL_TONE_MAP_LUMA] = "Luminance (BT.2446 A)",
};
nk_label(nk, "Tone mapping mode:", NK_TEXT_LEFT);
cpar->tone_mapping_mode = nk_combo(nk, tone_mapping_modes,
PL_TONE_MAP_MODE_COUNT,
cpar->tone_mapping_mode,
16, nk_vec2(nk_widget_width(nk), 300));
nk_label(nk, "Algorithm parameter:", NK_TEXT_LEFT);
const struct pl_tone_map_function *fun = cpar->tone_mapping_function;
if (fun->param_desc) {
nk_property_float(nk, fun->param_desc, fmaxf(fun->param_min, 0.001),