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#include <pthread.h>
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#include "demo.h"
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static int y;
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static int targy;
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static int xstart;
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static struct ncplane* on;
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struct ncvisual_options vopts;
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// called in the context of the ncvisual streamer of samoa.avi
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static int
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perframe(struct ncvisual* ncv __attribute__ ((unused)),
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struct ncvisual_options* ovopts,
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const struct timespec* abstime, void* vthree){
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int* three = vthree; // move up one every three callbacks
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DEMO_RENDER(ncplane_notcurses(ovopts->n));
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if(y < targy){
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return 0;
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}
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ncplane_move_yx(on, y, xstart);
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if(--*three == 0){
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--y;
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*three = 3;
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}
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clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, abstime, NULL);
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return 0;
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}
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// vsamoa is samoa fadectx
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static int
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changes_fadeout(struct notcurses* nc, struct ncplane* ncp,
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const struct timespec* abstime, void* vsamoa){
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static int iter = 0;
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struct ncfadectx* samoactx = vsamoa;
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struct ncplane* samplane = notcurses_stdplane(nc);
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if(++iter > ncfadectx_iterations(samoactx)){
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iter = ncfadectx_iterations(samoactx);
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}
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int r = ncplane_fadein_iteration(samplane, samoactx, iter, demo_fader, NULL);
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if(r){
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return r;
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}
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return demo_fader(nc, ncp, abstime, NULL);
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}
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static void*
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videothread(void* vnc){
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struct notcurses* nc = vnc;
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nc_err_e err;
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char* path = find_data("samoa.avi");
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Fully general ncvisual layer (#647)
This represents an essentially complete rewrite of ncvisual and associated code. It had two major goals:
Improve the ncvisual API based off lessons learned, pursuant to the upcoming API freeze. In particular, I wanted to:
decouple ncvisuals from ncplanes. It should be possible to render a ncvisual to multiple planes, with different scaling each time. It should be possible to create an ncvisual without a plane, etc.
normalize the various ways of constructing an ncvisual -- file, memory, plane, etc.
Support multiple blitters, from 7-bit ASCII to Sixel. This required writing the blitters in several cases, and they're not yet in their final implementations (but the API is fine)
I have not yet unified Plots and Visuals, and might not, given that the Plot code works fine. We could at this point implement Plots in terms of Visuals, though -- the blitter backend range has been unified. Sixel is not yet implemented, though it is listed.
There is a new POC tool, blitter. It renders its arguments using all possible blitter+scaling combinations. Another new POC, resize, displays its argument, then resizes it to the screen size and displays that, explicitly making use of ncvisual_resize() rather than a scaling parameter to ncvisual_render().
This also eliminates some memory leaks and bugs we were seeing in trunk, and brings in Sixel scaffolding.
The C++ wrapper will also need patching back up; I cut most of it down while wrestling with this crap, urk.
Closes #638, #562, and #622.
4 years ago
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struct ncvisual* ncv = ncvisual_from_file(path, &err);
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free(path);
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if(ncv == NULL){
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return NULL;
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}
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int rows, cols;
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struct ncplane* ncp = notcurses_stddim_yx(nc, &rows, &cols);
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struct ncvisual_options ovopts = {
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.scaling = NCSCALE_STRETCH,
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.n = ncp,
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.y = 1,
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};
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int three = 3;
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if(ncvisual_render(nc, ncv, &ovopts) == NULL){
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return NULL;
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}
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struct timespec fade;
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timespec_mul(&demodelay, 2, &fade);
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demo_render(nc);
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// vopts carries through 'changes.jpg', sitting above the standard plane. it
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// is faded out as we fade the samoa video (on standard plane ncp) in.
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struct ncfadectx* samoactx = ncfadectx_setup(ncp);
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if(samoactx == NULL){
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return NULL;
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}
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if(ncplane_fadeout(vopts.n, &fade, changes_fadeout, samoactx) < 0){
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ncfadectx_free(samoactx);
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ncplane_destroy(vopts.n);
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ncvisual_destroy(ncv);
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return PTHREAD_CANCELED;
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}
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ncfadectx_free(samoactx);
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ncplane_destroy(vopts.n);
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struct ncplane* apiap = ncplane_new(nc, 1, cols, rows - 1, 0, NULL);
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ncplane_set_fg_rgb(apiap, 0xc0, 0x40, 0x80);
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ncplane_set_bg_rgb(apiap, 0, 0, 0);
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ncplane_putstr_aligned(apiap, 0, NCALIGN_CENTER,
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"Apia 🡺 Atlanta. Samoa, tula'i ma sisi ia lau fu'a, lou pale lea!");
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int canceled = ncvisual_stream(nc, ncv, &err, delaymultiplier, perframe, &ovopts, &three);
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ncvisual_destroy(ncv);
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ncplane_destroy(apiap);
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if(canceled == 1){
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return PTHREAD_CANCELED;
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}
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return vnc;
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}
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static struct ncplane*
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outro_message(struct notcurses* nc, int* rows, int* cols){
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const char str0[] = " ATL, baby! ATL! ";
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const char str1[] = " throw your hands in the air ";
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const char str2[] = " hack on! —dank❤ ";
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int ystart = *rows - 6;
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struct ncplane* non = ncplane_aligned(notcurses_stdplane(nc), 5,
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strlen(str1) + 4, ystart,
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NCALIGN_CENTER, NULL);
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if(non == NULL){
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return NULL;
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}
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int xs;
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ncplane_yx(non, NULL, &xs);
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uint64_t channels = 0;
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channels_set_bg_rgb(&channels, 0x58, 0x36, 0x58);
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if(ncplane_set_base(non, " ", 0, channels) < 0){
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return NULL;
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}
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ncplane_dim_yx(non, rows, cols);
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int ybase = 0;
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// bevel the upper corners
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if(ncplane_set_bg_alpha(non, CELL_ALPHA_TRANSPARENT)){
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return NULL;
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}
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if(ncplane_putsimple_yx(non, ybase, 0, ' ') < 0 || ncplane_putsimple(non, ' ') < 0){
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return NULL;
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}
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if(ncplane_putsimple_yx(non, ybase, *cols - 2, ' ') < 0 || ncplane_putsimple(non, ' ') < 0){
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return NULL;
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}
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// ...and now the lower corners
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if(ncplane_putsimple_yx(non, *rows - 1, 0, ' ') < 0 || ncplane_putsimple(non, ' ') < 0){
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return NULL;
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}
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if(ncplane_putsimple_yx(non, *rows - 1, *cols - 2, ' ') < 0 || ncplane_putsimple(non, ' ') < 0){
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return NULL;
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}
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if(ncplane_set_fg_rgb(non, 0, 0, 0)){
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return NULL;
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}
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if(ncplane_set_bg_rgb(non, 0, 180, 180)){
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return NULL;
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}
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if(ncplane_set_bg_alpha(non, CELL_ALPHA_BLEND)){
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return NULL;
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}
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ncplane_styles_on(non, NCSTYLE_BOLD);
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if(ncplane_putstr_aligned(non, ++ybase, NCALIGN_CENTER, str0) < 0){
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return NULL;
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}
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ncplane_styles_off(non, NCSTYLE_BOLD);
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if(ncplane_putstr_aligned(non, ++ybase, NCALIGN_CENTER, str1) < 0){
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return NULL;
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}
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ncplane_styles_on(non, NCSTYLE_ITALIC);
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if(ncplane_putstr_aligned(non, ++ybase, NCALIGN_CENTER, str2) < 0){
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return NULL;
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}
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ncplane_styles_off(non, NCSTYLE_ITALIC);
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*rows = ystart;
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*cols = xs;
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return non;
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}
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int outro(struct notcurses* nc){
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if(!notcurses_canutf8(nc)){ // there's UTF8 in the outro message
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return 0;
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}
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int rows, cols;
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struct ncplane* ncp = notcurses_stddim_yx(nc, &rows, &cols);
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ncplane_erase(ncp);
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struct ncvisual* chncv = NULL;
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if(notcurses_canopen_images(nc)){
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nc_err_e err = 0;
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char* path = find_data("changes.jpg");
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chncv = ncvisual_from_file(path, &err);
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free(path);
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if(chncv == NULL){
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return -1;
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}
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vopts.scaling = NCSCALE_STRETCH;
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vopts.flags = NCVISUAL_OPTION_BLEND;
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if((vopts.n = ncvisual_render(nc, chncv, &vopts)) == NULL){
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ncvisual_destroy(chncv);
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return -1;
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}
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}
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xstart = cols;
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int ystart = rows;
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on = outro_message(nc, &ystart, &xstart);
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if(on == NULL){
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return -1;
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}
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y = ystart - 1;
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DEMO_RENDER(nc);
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ncplane_move_top(on);
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if(notcurses_canopen_videos(nc)){
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pthread_t tid;
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// will fade across 2 * demodelay
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targy = 3;
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pthread_create(&tid, NULL, videothread, nc);
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void* ret;
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pthread_join(tid, &ret);
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if(ret == PTHREAD_CANCELED){
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return 1;
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}
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}
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// fade out the closing message, which has reached the top (if we ran the
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// video) or is sitting at the bottom (if we didn't).
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ncplane_fadeout(on, &demodelay, demo_fader, NULL);
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ncplane_destroy(on);
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ncvisual_destroy(chncv);
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return on ? 0 : -1;
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}
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