mirror of
https://github.com/dankamongmen/notcurses.git
synced 2024-11-18 03:25:55 +00:00
hide ffmpeg ncvisual definition
This commit is contained in:
nick black
Nick Black
parent
ddfa62db70
commit
5bae4f93b8
90
src/lib/blit.c
Normal file
90
src/lib/blit.c
Normal file
@ -0,0 +1,90 @@
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#include "internal.h"
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// alpha comes to us 0--255, but we have only 3 alpha values to map them to.
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// settled on experimentally.
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static inline bool
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ffmpeg_trans_p(bool bgr, unsigned char alpha){
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if(!bgr && alpha < 192){
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return true;
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}
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return false;
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}
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// RGBA/BGRx blitter. For incoming BGRx (no transparency), bgr == true.
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static inline int
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tria_blit(ncplane* nc, int placey, int placex, int linesize, const void* data,
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int begy, int begx, int leny, int lenx, bool bgr){
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const int bpp = 32;
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const int rpos = bgr ? 2 : 0;
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const int bpos = bgr ? 0 : 2;
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int dimy, dimx, x, y;
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int visy = begy;
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int total = 0; // number of cells written
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ncplane_dim_yx(nc, &dimy, &dimx);
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// FIXME not going to necessarily be safe on all architectures hrmmm
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const unsigned char* dat = data;
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for(y = placey ; visy < (begy + leny) && y < dimy ; ++y, visy += 2){
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if(ncplane_cursor_move_yx(nc, y, placex)){
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return -1;
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}
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int visx = begx;
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for(x = placex ; visx < (begx + lenx) && x < dimx ; ++x, ++visx){
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const unsigned char* rgbbase_up = dat + (linesize * visy) + (visx * bpp / CHAR_BIT);
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const unsigned char* rgbbase_down = dat + (linesize * (visy + 1)) + (visx * bpp / CHAR_BIT);
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//fprintf(stderr, "[%04d/%04d] bpp: %d lsize: %d %02x %02x %02x %02x\n", y, x, bpp, linesize, rgbbase_up[0], rgbbase_up[1], rgbbase_up[2], rgbbase_up[3]);
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cell* c = ncplane_cell_ref_yx(nc, y, x);
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// use the default for the background, as that's the only way it's
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// effective in that case anyway
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c->channels = 0;
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c->attrword = 0;
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if(ffmpeg_trans_p(bgr, rgbbase_up[3]) || ffmpeg_trans_p(bgr, rgbbase_down[3])){
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cell_set_bg_alpha(c, CELL_ALPHA_TRANSPARENT);
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if(ffmpeg_trans_p(bgr, rgbbase_up[3]) && ffmpeg_trans_p(bgr, rgbbase_down[3])){
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cell_set_fg_alpha(c, CELL_ALPHA_TRANSPARENT);
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}else if(ffmpeg_trans_p(bgr, rgbbase_up[3])){ // down has the color
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if(cell_load(nc, c, "\u2584") <= 0){ // lower half block
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return -1;
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}
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cell_set_fg_rgb(c, rgbbase_down[rpos], rgbbase_down[1], rgbbase_down[bpos]);
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}else{ // up has the color
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if(cell_load(nc, c, "\u2580") <= 0){ // upper half block
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return -1;
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}
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cell_set_fg_rgb(c, rgbbase_up[rpos], rgbbase_up[1], rgbbase_up[bpos]);
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}
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}else{
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if(memcmp(rgbbase_up, rgbbase_down, 3) == 0){
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cell_set_fg_rgb(c, rgbbase_down[rpos], rgbbase_down[1], rgbbase_down[bpos]);
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cell_set_bg_rgb(c, rgbbase_down[rpos], rgbbase_down[1], rgbbase_down[bpos]);
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if(cell_load(nc, c, " ") <= 0){ // only need the background
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return -1;
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}
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}else{
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cell_set_fg_rgb(c, rgbbase_up[rpos], rgbbase_up[1], rgbbase_up[bpos]);
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cell_set_bg_rgb(c, rgbbase_down[rpos], rgbbase_down[1], rgbbase_down[bpos]);
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if(cell_load(nc, c, "\u2580") <= 0){ // upper half block
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return -1;
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}
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}
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}
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++total;
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}
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}
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return total;
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}
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// Blit a flat array 'data' of BGRx 32-bit values to the ncplane 'nc', offset
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// from the upper left by 'placey' and 'placex'. Each row ought occupy
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// 'linesize' bytes (this might be greater than lenx * 4 due to padding). A
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// subregion of the input can be specified with 'begy'x'begx' and 'leny'x'lenx'.
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int ncblit_bgrx(ncplane* nc, int placey, int placex, int linesize,
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const void* data, int begy, int begx, int leny, int lenx){
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return tria_blit(nc, placey, placex, linesize, data,
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begy, begx, leny, lenx, true);
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}
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int ncblit_rgba(ncplane* nc, int placey, int placex, int linesize,
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const void* data, int begy, int begx, int leny, int lenx){
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return tria_blit(nc, placey, placex, linesize, data,
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begy, begx, leny, lenx, false);
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}
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@ -80,34 +80,6 @@ typedef struct ncplane {
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bool scrolling; // is scrolling enabled? always disabled by default
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} ncplane;
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typedef struct ncvisual {
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struct AVFormatContext* fmtctx;
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struct AVCodecContext* codecctx; // video codec context
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struct AVCodecContext* subtcodecctx; // subtitle codec context
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struct AVFrame* frame;
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struct AVFrame* oframe;
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struct AVCodec* codec;
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struct AVCodecParameters* cparams;
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struct AVCodec* subtcodec;
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struct AVPacket* packet;
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struct SwsContext* swsctx;
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int packet_outstanding;
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int dstwidth, dstheight;
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int stream_index; // match against this following av_read_frame()
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int sub_stream_index; // subtitle stream index, can be < 0 if no subtitles
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float timescale; // scale frame duration by this value
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ncplane* ncp;
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// if we're creating the plane based off the first frame's dimensions, these
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// describe where the plane ought be placed, and how it ought be sized. this
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// path sets ncobj. ncvisual_destroy() ought in that case kill the ncplane.
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int placex, placey;
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ncscale_e style; // none, scale, or stretch
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struct notcurses* ncobj; // set iff this ncvisual "owns" its ncplane
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#ifdef USE_FFMPEG
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AVSubtitle subtitle;
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#endif
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} ncvisual;
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// current presentation state of the terminal. it is carried across render
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// instances. initialize everything to 0 on a terminal reset / startup.
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typedef struct renderstate {
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117
src/lib/libav.c
117
src/lib/libav.c
@ -2,99 +2,38 @@
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#include "version.h"
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#include "internal.h"
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typedef struct ncvisual {
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struct AVFormatContext* fmtctx;
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struct AVCodecContext* codecctx; // video codec context
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struct AVCodecContext* subtcodecctx; // subtitle codec context
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struct AVFrame* frame;
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struct AVFrame* oframe;
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struct AVCodec* codec;
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struct AVCodecParameters* cparams;
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struct AVCodec* subtcodec;
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struct AVPacket* packet;
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struct SwsContext* swsctx;
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int packet_outstanding;
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int dstwidth, dstheight;
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int stream_index; // match against this following av_read_frame()
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int sub_stream_index; // subtitle stream index, can be < 0 if no subtitles
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float timescale; // scale frame duration by this value
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ncplane* ncp;
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// if we're creating the plane based off the first frame's dimensions, these
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// describe where the plane ought be placed, and how it ought be sized. this
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// path sets ncobj. ncvisual_destroy() ought in that case kill the ncplane.
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int placex, placey;
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ncscale_e style; // none, scale, or stretch
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struct notcurses* ncobj; // set iff this ncvisual "owns" its ncplane
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#ifdef USE_FFMPEG
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AVSubtitle subtitle;
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#endif
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} ncvisual;
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ncplane* ncvisual_plane(ncvisual* ncv){
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return ncv->ncp;
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}
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// alpha comes to us 0--255, but we have only 3 alpha values to map them to.
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// settled on experimentally.
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static inline bool
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ffmpeg_trans_p(bool bgr, unsigned char alpha){
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if(!bgr && alpha < 192){
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return true;
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}
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return false;
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}
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// RGBA/BGRx blitter. For incoming BGRx (no transparency), bgr == true.
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static inline int
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tria_blit(ncplane* nc, int placey, int placex, int linesize, const void* data,
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int begy, int begx, int leny, int lenx, bool bgr){
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const int bpp = 32;
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const int rpos = bgr ? 2 : 0;
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const int bpos = bgr ? 0 : 2;
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int dimy, dimx, x, y;
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int visy = begy;
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int total = 0; // number of cells written
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ncplane_dim_yx(nc, &dimy, &dimx);
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// FIXME not going to necessarily be safe on all architectures hrmmm
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const unsigned char* dat = data;
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for(y = placey ; visy < (begy + leny) && y < dimy ; ++y, visy += 2){
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if(ncplane_cursor_move_yx(nc, y, placex)){
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return -1;
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}
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int visx = begx;
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for(x = placex ; visx < (begx + lenx) && x < dimx ; ++x, ++visx){
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const unsigned char* rgbbase_up = dat + (linesize * visy) + (visx * bpp / CHAR_BIT);
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const unsigned char* rgbbase_down = dat + (linesize * (visy + 1)) + (visx * bpp / CHAR_BIT);
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//fprintf(stderr, "[%04d/%04d] bpp: %d lsize: %d %02x %02x %02x %02x\n", y, x, bpp, linesize, rgbbase_up[0], rgbbase_up[1], rgbbase_up[2], rgbbase_up[3]);
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cell* c = ncplane_cell_ref_yx(nc, y, x);
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// use the default for the background, as that's the only way it's
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// effective in that case anyway
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c->channels = 0;
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c->attrword = 0;
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if(ffmpeg_trans_p(bgr, rgbbase_up[3]) || ffmpeg_trans_p(bgr, rgbbase_down[3])){
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cell_set_bg_alpha(c, CELL_ALPHA_TRANSPARENT);
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if(ffmpeg_trans_p(bgr, rgbbase_up[3]) && ffmpeg_trans_p(bgr, rgbbase_down[3])){
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cell_set_fg_alpha(c, CELL_ALPHA_TRANSPARENT);
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}else if(ffmpeg_trans_p(bgr, rgbbase_up[3])){ // down has the color
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if(cell_load(nc, c, "\u2584") <= 0){ // lower half block
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return -1;
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}
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cell_set_fg_rgb(c, rgbbase_down[rpos], rgbbase_down[1], rgbbase_down[bpos]);
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}else{ // up has the color
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if(cell_load(nc, c, "\u2580") <= 0){ // upper half block
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return -1;
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}
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cell_set_fg_rgb(c, rgbbase_up[rpos], rgbbase_up[1], rgbbase_up[bpos]);
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}
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}else{
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if(memcmp(rgbbase_up, rgbbase_down, 3) == 0){
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cell_set_fg_rgb(c, rgbbase_down[rpos], rgbbase_down[1], rgbbase_down[bpos]);
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cell_set_bg_rgb(c, rgbbase_down[rpos], rgbbase_down[1], rgbbase_down[bpos]);
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if(cell_load(nc, c, " ") <= 0){ // only need the background
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return -1;
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}
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}else{
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cell_set_fg_rgb(c, rgbbase_up[rpos], rgbbase_up[1], rgbbase_up[bpos]);
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cell_set_bg_rgb(c, rgbbase_down[rpos], rgbbase_down[1], rgbbase_down[bpos]);
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if(cell_load(nc, c, "\u2580") <= 0){ // upper half block
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return -1;
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}
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}
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}
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++total;
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}
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}
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return total;
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}
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// Blit a flat array 'data' of BGRx 32-bit values to the ncplane 'nc', offset
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// from the upper left by 'placey' and 'placex'. Each row ought occupy
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// 'linesize' bytes (this might be greater than lenx * 4 due to padding). A
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// subregion of the input can be specified with 'begy'x'begx' and 'leny'x'lenx'.
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int ncblit_bgrx(ncplane* nc, int placey, int placex, int linesize,
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const void* data, int begy, int begx, int leny, int lenx){
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return tria_blit(nc, placey, placex, linesize, data,
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begy, begx, leny, lenx, true);
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}
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int ncblit_rgba(ncplane* nc, int placey, int placex, int linesize,
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const void* data, int begy, int begx, int leny, int lenx){
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return tria_blit(nc, placey, placex, linesize, data,
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begy, begx, leny, lenx, false);
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}
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void ncvisual_destroy(ncvisual* ncv){
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if(ncv){
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#ifdef USE_FFMPEG
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@ -1,8 +1,58 @@
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#include "internal.h"
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#ifdef USE_OIIO
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#include <OpenImageIO/imageio.h>
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typedef struct ncvisual {
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struct AVFormatContext* fmtctx;
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struct AVCodecContext* codecctx; // video codec context
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struct AVCodecContext* subtcodecctx; // subtitle codec context
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struct AVFrame* frame;
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struct AVFrame* oframe;
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struct AVCodec* codec;
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struct AVCodecParameters* cparams;
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struct AVCodec* subtcodec;
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struct AVPacket* packet;
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struct SwsContext* swsctx;
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int packet_outstanding;
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int dstwidth, dstheight;
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int stream_index; // match against this following av_read_frame()
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int sub_stream_index; // subtitle stream index, can be < 0 if no subtitles
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float timescale; // scale frame duration by this value
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ncplane* ncp;
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// if we're creating the plane based off the first frame's dimensions, these
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// describe where the plane ought be placed, and how it ought be sized. this
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// path sets ncobj. ncvisual_destroy() ought in that case kill the ncplane.
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int placex, placey;
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ncscale_e style; // none, scale, or stretch
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struct notcurses* ncobj; // set iff this ncvisual "owns" its ncplane
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#ifdef USE_FFMPEG
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AVSubtitle subtitle;
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#endif
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} ncvisual;
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bool notcurses_canopen(const notcurses* nc __attribute__ ((unused))){
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return false;
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return true;
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}
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ncvisual* ncplane_visual_open(ncplane* nc, const char* filename, int* averr){
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auto in = OIIO::ImageInput::open(filename);
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if(!in){
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return nullptr;
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}
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(void)nc;
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(void)averr;
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return NULL;
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}
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ncvisual* ncvisual_open_plane(notcurses* nc, const char* filename,
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int* averr, int y, int x, ncscale_e style){
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(void)nc;
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(void)filename;
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(void)averr;
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(void)y;
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(void)x;
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(void)style;
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return NULL;
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}
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struct AVFrame* ncvisual_decode(ncvisual* nc, int* averr){
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@ -31,24 +81,6 @@ int ncvisual_stream(struct notcurses* nc, struct ncvisual* ncv, int* averr,
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return -1;
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}
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ncvisual* ncplane_visual_open(ncplane* nc, const char* filename, int* averr){
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(void)nc;
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(void)filename;
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(void)averr;
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return NULL;
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}
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ncvisual* ncvisual_open_plane(notcurses* nc, const char* filename,
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int* averr, int y, int x, ncscale_e style){
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(void)nc;
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(void)filename;
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(void)averr;
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(void)y;
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(void)x;
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(void)style;
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return NULL;
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}
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char* ncvisual_subtitle(const ncvisual* ncv){
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(void)ncv;
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return NULL;
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