+++ /dev/null
-#include "../libzmpeg3.h"
-
-zsubtitle_t::
-subtitle_t()
-{
-//zmsgs("subtitle=%p\n",this);
-}
-
-// closed caption or display
-zsubtitle_t::
-subtitle_t(int nid, int ww, int hh)
-{
-//zmsgs("subtitle=%p %dx%d\n", this, ww, hh);
- id = nid;
- done = -1;
- active = -1;
- draw = -1;
- set_image_size(ww, hh);
-}
-
-zsubtitle_t::
-~subtitle_t()
-{
-//zmsgs("subtitle=%p/%d subtitle->data=%p %d %d\n",
-// this, id, data, data_allocated, data_used);
- delete [] data;
- delete [] image_y;
- delete [] image_u;
- delete [] image_v;
- delete [] image_a;
-}
-
-void zsubtitle_t::
-set_image_size(int isz)
-{
-//zmsgs("subtitle=%p/%d\n", this, isz);
- sz = isz;
- /* Allocate image buffers */
- delete [] image_y;
- delete [] image_u;
- delete [] image_v;
- delete [] image_a;
- image_y = znew(uint8_t,isz);
- image_u = znew(uint8_t,isz);
- image_v = znew(uint8_t,isz);
- image_a = znew(uint8_t,isz);
-}
-
-void zsubtitle_t::
-set_image_size(int ww, int hh)
-{
- w = ww; h = hh;
- int isz = ww*hh + ww;
- if( isz > sz ) set_image_size(isz);
-}
-
-/* Returns 1 if failure */
-/* is_8bit mode has not been tested (no test media) */
-int zsubtitle_t::
-decompress_subtitle(zmpeg3_t *zsrc)
-{
- //int got_alpha = 0;
- int is_8bit = 0;
- uint8_t *yuv_palette = 0;
- uint8_t *yuv_alpha = 0;
- int ofsz = 16;
- bits_t st(zsrc,0);
- st.use_ptr(data);
- uint8_t *end = data + data_used;
- if( st.eos(end,16) ) return 1;
- int pkt_sz = st.get_bits(16);
- if( pkt_sz == 0 ) ofsz = 32;
- int field_offset[3];
- field_offset[0] = 0; // begining of even field
- field_offset[1] = 0; // end of even field, begining odd field
- if( st.eos(end,ofsz) ) return 1;
- /* end of odd field, beginning of ctl seq */
- field_offset[2] = st.get_bits(ofsz);
-//zmsgs("%d 0x%02x%02x data_used=%d data_size=%d\n",
-// __LINE__, data[0],data[1],data_used,field_offset[2]);
- if( data + field_offset[2] > end ) return 1;
- palette[0] = 0x00; palette[1] = 0x01;
- palette[2] = 0x02; palette[3] = 0x03;
- alpha[0] = 0xff; alpha[1] = 0xff;
- alpha[2] = 0xff; alpha[3] = 0xff;
- int ww = 0, hh = 0;
- x1 = 0; x2 = 0;
- y1 = 0; y2 = 0;
- force = 0;
- start_time = stop_time = 0;
-
- /* Advance to control sequences */
- uint8_t *ptr = data + field_offset[2];
- uint8_t *last_control_start = 0;
- uint8_t *next_control_start = ptr;
-
- while( last_control_start != next_control_start ) {
- st.use_ptr(next_control_start);
- if( st.eos(end,16) ) break; /* date */
- int date = st.get_bits(16) * 10;
- /* Offset of next control sequence */
- if( st.eos(end,ofsz) ) break;
- int next = st.get_bits(ofsz);
- last_control_start = next_control_start;
- next_control_start = data + next;
- if( next_control_start > end ) return 1;
-
- int done = 0;
- while( !done && !st.eos(end,8) ) {
- int type = st.get_bits(8);
- switch( type ) {
- case 0x00:
- force = 1;
- break;
- case 0x01:
- start_time = date;
-//zmsgs("start_time %d\n", start_time);
- break;
- case 0x02:
- stop_time = date;
-//zmsgs("stop_time %d\n", stop_time);
- break;
- case 0x83:
- if( st.eos(end,768*8) ) return 1;
- yuv_palette = st.input_ptr;
- st.input_ptr += 768;
- break;
- case 0x03:
- /* Entry in palette of each color */
- if( st.eos(end,16) ) return 1;
- for( int i=4; --i>=0; ) palette[i] = st.get_bits(4);
-//zmsgs("palette %d %d %d %d\n", palette[0], palette[1], palette[2], palette[3]);
- break;
- case 0x84:
- if( st.eos(end,256*8) ) return 1;
- yuv_alpha = st.input_ptr;
- st.input_ptr += 256;
- break;
- case 0x04:
- /* Alpha corresponding to each color */
- if( st.eos(end,16) ) return 1;
- for( int i=4; --i>=0; ) alpha[i] = st.get_bits(4)*255 / 15;
- //got_alpha = 1;
-//zmsgs("alphas %d %d %d %d\n", alpha[0], alpha[1], alpha[2], alpha[3]);
-#if 0
- alpha[3] = 0xff; alpha[2] = 0x80;
- alpha[1] = 0x40; alpha[0] = 0x00;
-#endif
- break;
- case 0x85:
- is_8bit = 1; // fall thru
- case 0x05:
- /* Extent of image on screen */
- if( st.eos(end,48) ) return 1;
- x1 = st.get_bits(12) & 0x7ff;
- x2 = st.get_bits(12) + 1;
- y1 = st.get_bits(12) & 0x7ff;
- y2 = st.get_bits(12) + 1;
- ww = x2 - x1;
- hh = y2 - y1;
-//zmsgs("20 x1=%d x2=%d y1=%d y2=%d, %dx%d\n",
-// x1, x2, y1, y2, ww, hh);
- ww = clip(ww, 1, 2048); hh = clip(hh, 1, 2048);
- x1 = clip(x1, 0, 2048); x2 = clip(x2, 0, 2048);
- y1 = clip(y1, 0, 2048); y2 = clip(y2, 0, 2048);
- break;
- case 0x86:
- if( st.eos(end,64) ) return 1;
- field_offset[0] = st.get_bits(32);
- field_offset[1] = st.get_bits(32);
-//zmsgs("offsets even=0x%x odd=0x%x\n", field_offset[0], field_offset[1]);
- break;
- case 0x06:
-/* offsets of even and odd field in compressed data */
- if( st.eos(end,32) ) return 1;
- field_offset[0] = st.get_bits(16);
- field_offset[1] = st.get_bits(16);
-//zmsgs("offsets even=0x%x odd=0x%x\n", field_offset[0], field_offset[1]);
- break;
- case 0xff:
- done = 1;
- break;
- default:
-//zmsgs("unknown type %02x\n", type);
- return 1;
- }
- }
- }
-
- if( ww <= 0 || hh <= 0 || !field_offset[0] ) return 1;
- if( is_8bit && !yuv_palette ) return 1;
- set_image_size(ww, hh);
-
- /* Decode image */
- int x = 0, y = 0;
- int field = 0;
-
- while( field < 2 ) {
- y = field;
- ptr = data + field_offset[field++];
- end = data + field_offset[field];
- st.use_ptr(ptr);
- x = 0;
- while( !st.eos(end) ) {
- int len, y_color, u_color, v_color, a_color;
- if( !is_8bit ) {
- if( st.eos(end,4) ) break;
- uint32_t zcode = st.get_bits(4);
- if( zcode < 0x4 ) {
- if( st.eos(end,4) ) break;
- zcode = (zcode << 4) | st.get_bits(4);
- if( zcode < 0x10 ) {
- if( st.eos(end,4) ) break;
- zcode = (zcode << 4) | st.get_bits(4);
- if( zcode < 0x40 ) {
- if( st.eos(end,4) ) break;
- zcode = (zcode << 4) | st.get_bits(4);
- if( zcode < 0x4 ) /* carriage return */
- zcode |= (w - x) << 2;
- }
- }
- }
- int color = (zcode & 0x3);
- len = zcode >> 2;
- int n = w - x;
- if( n < len ) len = n;
- int k = 4*palette[color];
- y_color = zsrc->palette[k+0];
- u_color = zsrc->palette[k+1];
- v_color = zsrc->palette[k+2];
- a_color = alpha[color];
- }
- else {
- if( st.eos(end,1) ) break;
- int has_run = st.get_bits(1);
- if( st.eos(end,1) ) break;
- int sz = st.get_bits(1) ? 8 : 2;
- if( st.eos(end,sz) ) break;
- int color = st.get_bits(sz);
- if( has_run ) {
- if( st.eos(end,1) ) break;
- if( st.get_bits(1) ) {
- if( st.eos(end,7) ) break;
- int n = st.get_bits(7);
- len = n == 0 ? w - x : n + 9;
- }
- else {
- if( st.eos(end,3) ) break;
- len = st.get_bits(3) + 2;
- }
- }
- else
- len = 1;
- int k = 3*color;
- y_color = yuv_palette[k+0];
- u_color = yuv_palette[k+1];
- v_color = yuv_palette[k+2];
- a_color = yuv_alpha ? yuv_alpha[color] : 0xff;
- }
-//zmsgs("%d, 0x%02x 0x%02x 0x%02x %02x\n",len,y_color,u_color,v_color,a_color);
- int ofs = y * w + x;
- memset(image_y+ofs,y_color,len);
- memset(image_u+ofs,u_color,len);
- memset(image_v+ofs,v_color,len);
- memset(image_a+ofs,a_color,len);
- if( (x+=len) >= w ) {
- st.next_byte_align();
- if( (y+=2) >= h ) break;
- x = 0;
- }
- }
- }
-
-#if 0
-/* this code computes a threshold (pass 0),
- * and forces pixels below the threshold (pass 1)
- * to black and the pixels above to white, as 2x2 yuv macropixels */
-// Normalize image colors
- float min_h = 360;
- float max_h = 0;
- float threshold = 0;
-#define HISTOGRAM_SIZE 1000
-// Decompression coefficients straight out of jpeglib
-#define V_TO_R 1.40200
-#define V_TO_G -0.71414
-
-#define U_TO_G -0.34414
-#define U_TO_B 1.77200
- uint8_t histogram[HISTOGRAM_SIZE];
- bzero(histogram, HISTOGRAM_SIZE);
- for( int pass=0; pass<2; ++pass ) {
- for( y=0; y<h; ++y ) {
- for( x=0; x<w; ++x ) {
- int ofs = y*w + x;
- if( image_a[ofs]) {
- uint8_t *y_color = image_y + ofs;
- uint8_t *a_color = image_a + ofs;
- uint8_t *u_color = image_u + ofs;
- uint8_t *v_color = image_v + ofs;
-
- /* Convert to RGB */
- float r = (*y_color + *v_color * V_TO_R);
- float g = (*y_color + *u_color * U_TO_G + *v_color * V_TO_G);
- float b = (*y_color + *u_color * U_TO_B);
-
- /* Multiply alpha */
- /* r = r * *a_color / 0xff; */
- /* g = g * *a_color / 0xff; */
- /* b = b * *a_color / 0xff; */
- /* Convert to HSV */
- float h, s, v;
- float min, max, delta;
- min = ((r < g) ? r : g) < b ? ((r < g) ? r : g) : b;
- max = ((r > g) ? r : g) > b ? ((r > g) ? r : g) : b;
- v = max;
- delta = max - min;
- if( max != 0 && delta != 0 ) {
- s = delta / max; /* s */
- if( r == max )
- h = (g - b) / delta; /* between yellow & magenta */
- else if( g == max )
- h = 2 + (b - r) / delta; /* between cyan & yellow */
- else
- h = 4 + (r - g) / delta; /* between magenta & cyan */
-
- h *= 60; /* degrees */
- if( h < 0 ) h += 360;
- }
- else {
- /* r = g = b = 0; */ /* s = 0, v is undefined */
- s = 0;
- h = -1;
- }
- /* int magnitude = (int)(*y_color * *y_color + */
- /* *u_color * *u_color + */
- /* *v_color * *v_color); */
-
- /* Multiply alpha */
- h = (h * *a_color) / 0xff;
- if( pass == 0 ) {
- ++histogram[(int)h];
- if( h < min_h ) min_h = h;
- if( h > max_h ) max_h = h;
- }
- else {
-// Set new color in a 2x2 pixel block
- if( h > threshold ) {
- *y_color = 0xff;
- }
- else {
- *y_color = 0;
- }
-
- *u_color = 0x80;
- *v_color = 0x80;
- *a_color = 0xff;
- }
- }
- }
- }
-
- if( pass == 0 ) {
- /* int hist_total = 0; */
- /* for( i=0; i<HISTOGRAM_SIZE; ++i ) */
- /* hist_total += histogram[i]; */
- /* int hist_count = 0; */
- /* for( i=0; i<HISTOGRAM_SIZE; ++i ) { */
- /* hist_count += histogram[i]; */
- /* if( hist_count > hist_total/3 ) { */
- /* threshold = i; */
- /* break; */
- /* } */
- /* } */
- threshold = (min_h + max_h) / 2;
-// threshold = 324;
-//zmsgs("min_h=%f max_h=%f threshold=%f\n", min_h, max_h, threshold);
- }
- }
-/* end b/w threshold code */
-#endif
-
-//zmsgs("coords: %d,%d - %d,%d size: %d,%d start_time=%d end_time=%d\n",
-// x1, y1, x2, y2, w, h, start_time, stop_time);
- return 0;
-}
-
-void zvideo_t::
-overlay_subtitle(zsubtitle_t *subtitle)
-{
- uint8_t *img_y = subtitle->image_y;
- uint8_t *img_u = subtitle->image_u;
- uint8_t *img_v = subtitle->image_v;
- uint8_t *img_a = subtitle->image_a;
-
- if( !img_y || !img_u || !img_v || !img_a ) return;
- int iofs = 0;
- int x1 = subtitle->x1;
- if( x1 < 0 ) { iofs += -x1; x1 = 0; }
- int x2 = subtitle->x2;
- if( x2 > coded_picture_width ) x2 = coded_picture_width;
- int y1 = subtitle->y1;
- if( y1 < 0 ) { iofs += -y1*subtitle->w; y1 = 0; }
- int y2 = subtitle->y2;
- if( y2 > coded_picture_height ) y2 = coded_picture_height;
-
- for( int y=y1; y<y2; ++y ) {
- int oofs = y * coded_picture_width + x1;
- uint8_t *output_y = subtitle_frame[0] + oofs;
- oofs = y/2 * chrom_width + x1/2;
- uint8_t *output_u = subtitle_frame[1] + oofs;
- uint8_t *output_v = subtitle_frame[2] + oofs;
- int ofs = iofs + (y-y1) * subtitle->w;
- uint8_t *input_y = img_y + ofs;
- uint8_t *input_u = img_u + ofs;
- uint8_t *input_v = img_v + ofs;
- uint8_t *input_a = img_a + ofs;
-
- for( int x=x1; x<x2; ++x ) {
- int opacity = *input_a;
- int transparency = 0xff - opacity;
- *output_y = (*input_y*opacity + *output_y*transparency) / 0xff;
- ++output_y;
- if( !(y & 1) && !(x & 1) ) {
- *output_u = (*input_u*opacity + *output_u*transparency) / 0xff;
- *output_v = (*input_v*opacity + *output_v*transparency) / 0xff;
- ++output_u; ++output_v;
- }
- ++input_y; ++input_a;
- ++input_u; ++input_v;
- }
- }
-}
-
-void zvideo_t::
-new_output()
-{
- int sz = coded_picture_width * coded_picture_height;
- int isz = chrom_width * chrom_height;
- if( !subtitle_frame[0] ) {
- subtitle_frame[0] = new uint8_t[sz+8];
- subtitle_frame[1] = new uint8_t[isz+8];
- subtitle_frame[2] = new uint8_t[isz+8];
- }
-
- memcpy(subtitle_frame[0], output_src[0], sz);
- memcpy(subtitle_frame[1], output_src[1], isz);
- memcpy(subtitle_frame[2], output_src[2], isz);
-
- output_src[0] = subtitle_frame[0];
- output_src[1] = subtitle_frame[1];
- output_src[2] = subtitle_frame[2];
-}
-
-int zsubtitle_t::
-decode(video_t *video)
-{
-//zmsgs("id=%d strk=%d i=%d start=%f stop=%f active=%d draw=%d framenow=%f\n",
-// subtitle->id,strk,i,subtitle->start_frametime,subtitle->stop_frametime,
-// subtitle->active,subtitle->draw,frame_now);
- double framerate = video->frame_rate;
- if( !framerate ) framerate = 30000./1001;
- if( !active ) {
- active = 1;
- if( decompress_subtitle(video->src) ) return -1;
- int start_frms = framerate * start_time/1000.;
- int stop_frms = framerate * stop_time/1000.;
- start_frame = video->framenum + start_frms;
- stop_frame = video->framenum + stop_frms;
- frame_time = video->frame_time;
- }
- int life_time = video->frame_time - frame_time;
- if( life_time > 20*framerate ) return -1; // doesn't live forever
- if( draw < 0 ) return 0; // never draw
- if( draw || force > 0 ) return 1; // always draw
- if( video->seek_time > 2 ) {
- /* at least 2 consecutive frames shown since last seek */
- int hold_frames = framerate * SUBTITLE_HOLD_TIME;
- int early_frame = start_frame-hold_frames;
- if( video->framenum < early_frame ) return -1; // way too early
- int late_frame = stop_frame+hold_frames;
- if( video->framenum > late_frame ) return -1; // way too late
- }
- if( video->framenum < start_frame ) return 0; // too early
- if( video->framenum < stop_frame ) return 1; // not too late
- return 0;
-}
-
-void zvideo_t::
-decode_subtitle()
-{
- if( !output_src[0] ) return;
- int copied = 0;
- for( int strk=0; strk<src->subtitle_tracks(); ++strk ) {
- strack_t *strack = src->strack[strk];
- if( !strack ) continue;
- if( strack->video && strack->video != this ) continue;
- strack->rwlock.enter();
- int i = 0;
- while( i < strack->total_subtitles ) {
- subtitle_t *subtitle = strack->subtitles[i];
- int ret = -1;
- if( strack->id == subtitle_track || subtitle->force ) {
- if( (ret=subtitle->decode(this)) > 0 ) {
- if( !copied ) { copied = 1; new_output(); }
- overlay_subtitle(subtitle);
- }
- }
- if( ret < 0 ) {
- strack->del_subtitle(subtitle, -1);
- if( subtitle->force < 0 ) delete subtitle;
- continue;
- }
- ++i;
- }
- strack->rwlock.leave();
- }
-}
-
-int zmpeg3_t::
-display_subtitle(int stream, int sid, int id,
- uint8_t *yp, uint8_t *up, uint8_t *vp, uint8_t *ap,
- int x, int y, int w, int h, double start_msecs, double stop_msecs)
-{
- int ret = 1;
- if( stream >= 0 && stream < total_vtracks ) {
- vtrack_t *vtrk = vtrack[stream];
- video_t *video = vtrk->video;
- strack_t *strack = create_strack(sid, video);
- strack->rwlock.write_enter();
- subtitle_t *subtitle = 0;
- for( int i=strack->total_subtitles; --i>=0 && !subtitle; ) {
- subtitle_t *sp = strack->subtitles[i];
- if( sp->id == id ) subtitle = sp;
- }
- if( !subtitle ) {
- subtitle = new subtitle_t(id, w, h);
- if( strack->append_subtitle(subtitle,0) ) {
- delete subtitle; subtitle = 0;
- }
- }
- else
- subtitle->set_image_size(w, h);
- if( subtitle ) {
- subtitle->x1 = x; subtitle->x2 = x + w;
- subtitle->y1 = y; subtitle->y2 = y + h;
- int sz = w * h;
- if( yp ) memcpy(subtitle->image_y, yp, sz);
- else memset(subtitle->image_y, 0xff, sz);
- if( up ) memcpy(subtitle->image_u, up, sz);
- else memset(subtitle->image_u, 0x80, sz);
- if( vp ) memcpy(subtitle->image_v, vp, sz);
- else memset(subtitle->image_v, 0x80, sz);
- if( ap ) memcpy(subtitle->image_a, ap, sz);
- else memset(subtitle->image_a, 0xff, sz);
- subtitle->start_time = start_msecs;
- subtitle->stop_time = stop_msecs;
- double framerate = vtrk->frame_rate;
- if( !framerate ) framerate = 30000./1001;
- int start_frms = framerate * start_msecs/1000.;
- int stop_frms = framerate * stop_msecs/1000.;
- subtitle->start_frame = video->framenum + start_frms;
- if( stop_msecs ) {
- subtitle->stop_frame = video->framenum + stop_frms;
- subtitle->frame_time = video->frame_time;
- }
- else // lives forever
- subtitle->frame_time = subtitle->stop_frame = INT_MAX;
- subtitle->force = -1;
- subtitle->draw = 0;
- ret = 0;
- }
- strack->rwlock.write_leave();
- }
- return ret;
-}
-
-int zmpeg3_t::
-delete_subtitle(int stream, int sid, int id)
-{
- int result = 1;
- if( stream >= 0 && stream < total_vtracks ) {
- vtrack_t *vtrk = vtrack[stream];
- video_t *vid = vtrk->video;
- strack_t *strack = get_strack_id(sid, vid);
- if( strack != 0 ) {
- strack->rwlock.write_enter();
- for( int i=strack->total_subtitles; --i>=0; ) {
- subtitle_t *sp = strack->subtitles[i];
- if( sp->id == id ) {
- strack->del_subtitle(i);
- if( sp->force < 0 ) delete sp;
- result = 0;
- break;
- }
- }
- strack->rwlock.write_leave();
- }
- }
- return result;
-}
-
projects / goodguy / history.git / blobdiff