diff options
Diffstat (limited to 'src/spu_dec/spudvb_decoder.c')
| -rw-r--r-- | src/spu_dec/spudvb_decoder.c | 1220 |
1 files changed, 1220 insertions, 0 deletions
diff --git a/src/spu_dec/spudvb_decoder.c b/src/spu_dec/spudvb_decoder.c new file mode 100644 index 000000000..8cdba1baa --- /dev/null +++ b/src/spu_dec/spudvb_decoder.c @@ -0,0 +1,1220 @@ +/* + * Copyright (C) 2010 the xine project + * + * This file is part of xine, a free video player. + * + * xine is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * xine is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * DVB Subtitle decoder (ETS 300 743) + * (c) 2004 Mike Lampard <mlampard@users.sourceforge.net> + * based on the application dvbsub by Dave Chapman + * + * TODO: + * - Implement support for teletext based subtitles + */ + +#include "pthread.h" +#include <errno.h> +#include <xine/xine_internal.h> +#include <xine/spu.h> +#include <xine/osd.h> +#define MAX_REGIONS 7 + +#define SPU_MAX_WIDTH 1920 +#define SPU_MAX_HEIGHT 1080 + +/*#define LOG*/ +#define LOG_MODULE "spudvb" + +typedef struct { + int x, y; + unsigned char is_visible; +} visible_region_t; + +typedef struct { + int page_time_out; + int page_version_number; + int page_state; + int page_id; + visible_region_t regions[MAX_REGIONS]; +} page_t; + +typedef struct { + int version_number; + int width, height; + int empty; + int depth; + int CLUT_id; + int objects_start; + int objects_end; + unsigned int object_pos[65536]; + unsigned char *img; + osd_object_t *osd; +} region_t; + +typedef struct { +/* dvbsub stuff */ + int x; + int y; + unsigned int curr_obj; + unsigned int curr_reg[64]; + uint8_t *buf; + int i; + int i_bits; + int in_scanline; + int compat_depth; + page_t page; + region_t regions[MAX_REGIONS]; + clut_t colours[MAX_REGIONS*256]; + unsigned char trans[MAX_REGIONS*256]; + struct { + unsigned char lut24[4], lut28[4], lut48[16]; + } lut[MAX_REGIONS]; +} dvbsub_func_t; + +typedef struct dvb_spu_class_s { + spu_decoder_class_t class; + xine_t *xine; + + int ignore_pts; +} dvb_spu_class_t; + +typedef struct dvb_spu_decoder_s { + spu_decoder_t spu_decoder; + + dvb_spu_class_t *class; + xine_stream_t *stream; + + spu_dvb_descriptor_t *spu_descriptor; + + /* dvbsub_osd_mutex should be locked around all calls to this->osd_renderer->show() + and this->osd_renderer->hide() */ + pthread_mutex_t dvbsub_osd_mutex; + + char *pes_pkt; + char *pes_pkt_wrptr; + unsigned int pes_pkt_size; + + int64_t vpts; + int64_t end_vpts; + + pthread_t dvbsub_timer_thread; + struct timespec dvbsub_hide_timeout; + pthread_cond_t dvbsub_restart_timeout; + dvbsub_func_t *dvbsub; + int show; +} dvb_spu_decoder_t; + +static clut_t default_clut[256]; +static unsigned char default_trans[256]; +static int default_colours_init = 0; + +static void reset_clut (dvbsub_func_t *dvbsub) +{ + int i, r; + + /* Reset the colour LUTs */ + for (r = 0; r < MAX_REGIONS; ++r) + { + memcpy (dvbsub->colours + r * 256, default_clut, sizeof (default_clut)); + memcpy (dvbsub->trans + r * 256, default_trans, sizeof (default_trans)); + } + + /* Reset the colour index LUTs */ + for (r = 0; r < MAX_REGIONS; ++r) + { + dvbsub->lut[r].lut24[0] = 0x0; + dvbsub->lut[r].lut24[1] = 0x7; + dvbsub->lut[r].lut24[2] = 0x8; + dvbsub->lut[r].lut24[3] = 0xF; + dvbsub->lut[r].lut28[0] = 0x00; + dvbsub->lut[r].lut28[1] = 0x77; + dvbsub->lut[r].lut28[2] = 0x88; + dvbsub->lut[r].lut28[3] = 0xFF; + for (i = 0; i < 16; ++i) + dvbsub->lut[r].lut48[i] = i | i << 4; + } +} + +static void update_osd(dvb_spu_decoder_t *this, int region_id) +{ + dvbsub_func_t *dvbsub = this->dvbsub; + region_t *reg = &dvbsub->regions[region_id]; + + if ( !reg->img ) { + if ( reg->osd ) { + pthread_mutex_lock( &this->dvbsub_osd_mutex ); + this->stream->osd_renderer->free_object( reg->osd ); + reg->osd = NULL; + pthread_mutex_unlock( &this->dvbsub_osd_mutex ); + } + return; + } + + if ( reg->osd ) { + if ( reg->width!=reg->osd->width || reg->height!=reg->osd->height ) { + pthread_mutex_lock( &this->dvbsub_osd_mutex ); + this->stream->osd_renderer->free_object( reg->osd ); + reg->osd = NULL; + pthread_mutex_unlock( &this->dvbsub_osd_mutex ); + } + } + + if ( !reg->osd ) + reg->osd = this->stream->osd_renderer->new_object( this->stream->osd_renderer, reg->width, reg->height ); +} + +static void update_region (dvb_spu_decoder_t * this, int region_id, int region_width, int region_height, int fill, int fill_color) +{ + + dvbsub_func_t *dvbsub = this->dvbsub; + region_t *reg = &dvbsub->regions[region_id]; + page_t *page = &dvbsub->page; + + /* reject invalid sizes and set some limits ! */ + if ( region_width<=0 || region_height<=0 || region_width>SPU_MAX_WIDTH || region_height>SPU_MAX_HEIGHT ) { + if ( reg->img ) { + free( reg->img ); + reg->img = NULL; + } + lprintf("rejected region %d = %dx%d\n", region_id, region_width, region_height ); + return; + } + + if ( reg->width*reg->height<region_width*region_height ) { + lprintf("update size of region %d = %dx%d\n", region_id, region_width, region_height); + if ( reg->img ) { + free( reg->img ); + reg->img = NULL; + } + } + + if ( !reg->img ) { + if ( !(reg->img=xine_xmalloc(region_width*region_height)) ) { + lprintf( "can't allocate mem for region %d\n", region_id ); + return; + } + fill = 1; + } + + if ( fill ) { + memset( reg->img, fill_color, region_width*region_height ); + reg->empty = 1; + lprintf("FILL REGION %d\n", region_id); + } + reg->width = region_width; + reg->height = region_height; +} + + +static void do_plot (dvb_spu_decoder_t * this, int r, int x, int y, unsigned char pixel) +{ + int i; + dvbsub_func_t *dvbsub = this->dvbsub; + + i = (y * dvbsub->regions[r].width) + x; + /* do some clipping */ + if ( i<(dvbsub->regions[r].width*dvbsub->regions[r].height) ) { + dvbsub->regions[r].img[i] = pixel; + dvbsub->regions[r].empty = 0; + } +} + +static void plot (dvb_spu_decoder_t * this, int r, int run_length, unsigned char pixel) +{ + + dvbsub_func_t *dvbsub = this->dvbsub; + + int x2 = dvbsub->x + run_length; + + while (dvbsub->x < x2) { + do_plot (this, r, dvbsub->x, dvbsub->y, pixel); + dvbsub->x++; + } +} + +static const uint8_t *lookup_lut (const dvbsub_func_t *dvbsub, int r) +{ + static const uint8_t identity_lut[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; + + switch (dvbsub->compat_depth) + { + case 012: return dvbsub->lut[r].lut24; + case 013: return dvbsub->lut[r].lut28; + case 023: return dvbsub->lut[r].lut48; + default: return identity_lut; + } +} + +static unsigned char next_datum (dvb_spu_decoder_t * this, int width) +{ + dvbsub_func_t *dvbsub = this->dvbsub; + unsigned char x = 0; + + if (!dvbsub->i_bits) + dvbsub->i_bits = 8; + + if (dvbsub->i_bits < width) + { + /* need to read from more than one byte; split it up */ + width -= dvbsub->i_bits; + x = dvbsub->buf[dvbsub->i++] & ((1 << dvbsub->i_bits) - 1); + dvbsub->i_bits = 8; + return x << width | next_datum (this, width); + } + + dvbsub->i_bits = (dvbsub->i_bits - width) & 7; + x = (dvbsub->buf[dvbsub->i] >> dvbsub->i_bits) & ((1 << width) - 1); + + if (!dvbsub->i_bits) + ++dvbsub->i; + + return x; +} + +static void decode_2bit_pixel_code_string (dvb_spu_decoder_t * this, int r, int object_id, int ofs, int n) +{ + dvbsub_func_t *dvbsub = this->dvbsub; + int j; + const uint8_t *lut = lookup_lut (dvbsub, r); + + if (dvbsub->in_scanline == 0) + dvbsub->in_scanline = 1; + + dvbsub->i_bits = 0; + j = dvbsub->i + n; + + while (dvbsub->i < j) + { + int next_bits = next_datum (this, 2); + int run_length; + + if (next_bits) + { + /* single pixel */ + plot (this, r, 1, lut[next_bits]); + continue; + } + + /* switch 1 */ + if (next_datum (this, 1) == 0) + { + /* run length, 3 to 10 pixels, colour given */ + run_length = next_datum (this, 3); + plot (this, r, run_length + 3, lut[next_datum (this, 2)]); + continue; + } + + /* switch 2 */ + if (next_datum (this, 1) == 1) + { + /* single pixel, colour 0 */ + plot (this, r, 1, lut[0]); + continue; + } + + /* switch 3 */ + switch (next_datum (this, 2)) + { + case 0: /* end-of-string */ + j = dvbsub->i; /* set the while cause FALSE */ + break; + case 1: /* two pixels, colour 0 */ + plot (this, r, 2, lut[0]); + break; + case 2: /* run length, 12 to 27 pixels (4-bit), colour given */ + run_length = next_datum (this, 4); + plot (this, r, run_length + 12, lut[next_datum (this, 2)]); + break; + case 3: /* run length, 29 to 284 pixels (8-bit), colour given */ + run_length = next_datum (this, 8); + plot (this, r, run_length + 29, lut[next_datum (this, 2)]); + } + } + + if (dvbsub->i_bits) { + dvbsub->i++; + dvbsub->i_bits = 0; + } +} + +static void decode_4bit_pixel_code_string (dvb_spu_decoder_t * this, int r, int object_id, int ofs, int n) +{ + dvbsub_func_t *dvbsub = this->dvbsub; + int j; + const uint8_t *lut = lookup_lut (dvbsub, r); + + if (dvbsub->in_scanline == 0) + dvbsub->in_scanline = 1; + + dvbsub->i_bits = 0; + j = dvbsub->i + n; + + while (dvbsub->i < j) + { + int next_bits = next_datum (this, 4); + int run_length; + + if (next_bits) + { + /* single pixel */ + plot (this, r, 1, lut[next_bits]); + continue; + } + + /* switch 1 */ + if (next_datum (this, 1) == 0) + { + run_length = next_datum (this, 3); + if (!run_length) + /* end-of-string */ + break; + + /* run length, 3 to 9 pixels, colour 0 */ + plot (this, r, run_length + 2, lut[0]); + continue; + } + + /* switch 2 */ + if (next_datum (this, 1) == 0) + { + /* run length, 4 to 7 pixels, colour given */ + run_length = next_datum (this, 2); + plot (this, r, run_length + 4, lut[next_datum (this, 4)]); + continue; + } + + /* switch 3 */ + switch (next_datum (this, 2)) + { + case 0: /* single pixel, colour 0 */ + plot (this, r, 1, lut[0]); + break; + case 1: /* two pixels, colour 0 */ + plot (this, r, 2, lut[0]); + break; + case 2: /* run length, 9 to 24 pixels (4-bit), colour given */ + run_length = next_datum (this, 4); + plot (this, r, run_length + 9, lut[next_datum (this, 4)]); + break; + case 3: /* run length, 25 to 280 pixels (8-bit), colour given */ + run_length = next_datum (this, 8); + plot (this, r, run_length + 25, lut[next_datum (this, 4)]); + } + } + + if (dvbsub->i_bits) { + dvbsub->i++; + dvbsub->i_bits = 0; + } +} + +static void decode_8bit_pixel_code_string (dvb_spu_decoder_t * this, int r, int object_id, int ofs, int n) +{ + dvbsub_func_t *dvbsub = this->dvbsub; + int j; + + if (dvbsub->in_scanline == 0) + dvbsub->in_scanline = 1; + + j = dvbsub->i + n; + + while (dvbsub->i < j) + { + int next_bits = dvbsub->buf[dvbsub->i++]; + int run_length; + + if (next_bits) + { + /* single pixel */ + plot (this, r, 1, next_bits); + continue; + } + + /* switch 1 */ + run_length = dvbsub->buf[dvbsub->i] & 127; + + if (dvbsub->buf[dvbsub->i++] & 128) + { + /* run length, 3 to 127 pixels, colour given */ + if (run_length > 2) + plot (this, r, run_length + 4, dvbsub->buf[dvbsub->i++]); + continue; + } + + if (!run_length) + /* end-of-string */ + break; + + /* run length, 1 to 127 pixels, colour 0 */ + plot (this, r, run_length + 2, 0); + } +} + +static void recalculate_trans (dvb_spu_decoder_t *this) +{ + dvbsub_func_t *const dvbsub = this->dvbsub; + xine_spu_opacity_t opacity; + int i; + + _x_spu_get_opacity (this->stream->xine, &opacity); + for (i = 0; i < MAX_REGIONS * 256; ++i) { + /* ETSI-300-743 says "full transparency if Y == 0". */ + if (dvbsub->colours[i].y == 0) + dvbsub->trans[i] = 0; + else { + int v = _x_spu_calculate_opacity (&dvbsub->colours[i], dvbsub->colours[i].foo, &opacity); + dvbsub->trans[i] = v * 14 / 255 + 1; + } + } + +} + +static void set_clut(dvb_spu_decoder_t *this,int CLUT_id,int CLUT_entry_id,int Y_value, int Cr_value, int Cb_value, int T_value) { + + dvbsub_func_t *dvbsub = this->dvbsub; + + if ((CLUT_id>=MAX_REGIONS) || (CLUT_entry_id>255)) { + return; + } + + dvbsub->colours[(CLUT_id*256)+CLUT_entry_id].y=Y_value; + dvbsub->colours[(CLUT_id*256)+CLUT_entry_id].cr=Cr_value; + dvbsub->colours[(CLUT_id*256)+CLUT_entry_id].cb=Cb_value; + dvbsub->colours[(CLUT_id*256)+CLUT_entry_id].foo = T_value; +} + +static void process_CLUT_definition_segment(dvb_spu_decoder_t *this) { + int page_id, + segment_length, + CLUT_id, + CLUT_version_number; + + int CLUT_entry_id, + CLUT_flag_8_bit, + CLUT_flag_4_bit, + CLUT_flag_2_bit, + full_range_flag, + Y_value, + Cr_value, + Cb_value, + T_value; + dvbsub_func_t *dvbsub = this->dvbsub; + + int j; + + page_id=(dvbsub->buf[dvbsub->i]<<8)|dvbsub->buf[dvbsub->i+1]; dvbsub->i+=2; + segment_length=(dvbsub->buf[dvbsub->i]<<8)|dvbsub->buf[dvbsub->i+1]; dvbsub->i+=2; + j=dvbsub->i+segment_length; + + CLUT_id=dvbsub->buf[dvbsub->i++]; + CLUT_version_number=(dvbsub->buf[dvbsub->i]&0xf0)>>4; + dvbsub->i++; + + while (dvbsub->i < j) { + CLUT_entry_id=dvbsub->buf[dvbsub->i++]; + + CLUT_flag_2_bit=(dvbsub->buf[dvbsub->i]&0x80)>>7; + CLUT_flag_4_bit=(dvbsub->buf[dvbsub->i]&0x40)>>6; + CLUT_flag_8_bit=(dvbsub->buf[dvbsub->i]&0x20)>>5; + full_range_flag=dvbsub->buf[dvbsub->i]&1; + dvbsub->i++; + + if (full_range_flag==1) { + Y_value=dvbsub->buf[dvbsub->i++]; + Cr_value=dvbsub->buf[dvbsub->i++]; + Cb_value=dvbsub->buf[dvbsub->i++]; + T_value=dvbsub->buf[dvbsub->i++]; + } else { + Y_value = dvbsub->buf[dvbsub->i] & 0xfc; + Cr_value = (dvbsub->buf[dvbsub->i] << 6 | dvbsub->buf[dvbsub->i + 1] >> 2) & 0xf0; + Cb_value = (dvbsub->buf[dvbsub->i + 1] << 2) & 0xf0; + T_value = (dvbsub->buf[dvbsub->i + 1] & 3) * 0x55; /* expand only this one to full range! */ + dvbsub->i+=2; + } + set_clut(this, CLUT_id,CLUT_entry_id,Y_value,Cr_value,Cb_value,T_value); + } +} + +static void process_pixel_data_sub_block (dvb_spu_decoder_t * this, int r, int o, int ofs, int n) +{ + int data_type; + int j; + + dvbsub_func_t *dvbsub = this->dvbsub; + + j = dvbsub->i + n; + + dvbsub->x = (dvbsub->regions[r].object_pos[o]) >> 16; + dvbsub->y = ((dvbsub->regions[r].object_pos[o]) & 0xffff) + ofs; + while (dvbsub->i < j) { + data_type = dvbsub->buf[dvbsub->i++]; + + switch (data_type) { + case 0: + dvbsub->i++; + case 0x10: + decode_2bit_pixel_code_string (this, r, o, ofs, n - 1); + break; + case 0x11: + decode_4bit_pixel_code_string (this, r, o, ofs, n - 1); + break; + case 0x12: + decode_8bit_pixel_code_string (this, r, o, ofs, n - 1); + break; + case 0x20: /* 2-to-4bit colour index map */ + /* should this be implemented since we have an 8-bit overlay? */ + dvbsub->lut[r].lut24[0] = dvbsub->buf[dvbsub->i ] >> 4; + dvbsub->lut[r].lut24[1] = dvbsub->buf[dvbsub->i ] & 0x0f; + dvbsub->lut[r].lut24[2] = dvbsub->buf[dvbsub->i + 1] >> 4; + dvbsub->lut[r].lut24[3] = dvbsub->buf[dvbsub->i + 1] & 0x0f; + dvbsub->i += 2; + break; + case 0x21: /* 2-to-8bit colour index map */ + memcpy (dvbsub->lut[r].lut28, dvbsub->buf + dvbsub->i, 4); + dvbsub->i += 4; + break; + case 0x22: + memcpy (dvbsub->lut[r].lut48, dvbsub->buf + dvbsub->i, 16); + dvbsub->i += 16; + break; + case 0xf0: + dvbsub->in_scanline = 0; + dvbsub->x = (dvbsub->regions[r].object_pos[o]) >> 16; + dvbsub->y += 2; + break; + default: + lprintf ("unimplemented data_type %02x in pixel_data_sub_block\n", data_type); + } + } + + dvbsub->i = j; +} + +static void process_page_composition_segment (dvb_spu_decoder_t * this) +{ + int segment_length; + int region_id, region_x, region_y; + dvbsub_func_t *dvbsub = this->dvbsub; + + dvbsub->page.page_id = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + segment_length = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + + int j = dvbsub->i + segment_length; + + dvbsub->page.page_time_out = dvbsub->buf[dvbsub->i++]; + if ( dvbsub->page.page_time_out>6 ) /* some timeout are insane, e.g. 65s ! */ + dvbsub->page.page_time_out = 6; + + int version = (dvbsub->buf[dvbsub->i] & 0xf0) >> 4; + if ( version == dvbsub->page.page_version_number ) + return; + dvbsub->page.page_version_number = version; + dvbsub->page.page_state = (dvbsub->buf[dvbsub->i] & 0x0c) >> 2; + dvbsub->i++; + + int r; + for (r=0; r<MAX_REGIONS; r++) { /* reset */ + dvbsub->page.regions[r].is_visible = 0; + } + + while (dvbsub->i < j) { + region_id = dvbsub->buf[dvbsub->i++]; + dvbsub->i++; /* reserved */ + region_x = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + region_y = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + + dvbsub->page.regions[region_id].x = region_x; + dvbsub->page.regions[region_id].y = region_y; + dvbsub->page.regions[region_id].is_visible = 1; + } +} + + +static void process_region_composition_segment (dvb_spu_decoder_t * this) +{ + int segment_length, + region_id, + region_version_number, + region_fill_flag, region_width, region_height, region_level_of_compatibility, region_depth, CLUT_id, region_8_bit_pixel_code, region_4_bit_pixel_code, region_2_bit_pixel_code; + int object_id, object_type, object_provider_flag, object_x, object_y, foreground_pixel_code, background_pixel_code; + int j; + int o; + dvbsub_func_t *dvbsub = this->dvbsub; + + dvbsub->page.page_id = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + segment_length = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + j = dvbsub->i + segment_length; + + region_id = dvbsub->buf[dvbsub->i++]; + region_version_number = (dvbsub->buf[dvbsub->i] & 0xf0) >> 4; + region_fill_flag = (dvbsub->buf[dvbsub->i] & 0x08) >> 3; + dvbsub->i++; + region_width = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + region_height = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + region_level_of_compatibility = (dvbsub->buf[dvbsub->i] & 0xe0) >> 5; + region_depth = (dvbsub->buf[dvbsub->i] & 0x1c) >> 2; + dvbsub->compat_depth = region_level_of_compatibility << 3 | region_depth; + dvbsub->i++; + CLUT_id = dvbsub->buf[dvbsub->i++]; + region_8_bit_pixel_code = dvbsub->buf[dvbsub->i++]; + region_4_bit_pixel_code = (dvbsub->buf[dvbsub->i] & 0xf0) >> 4; + region_2_bit_pixel_code = (dvbsub->buf[dvbsub->i] & 0x0c) >> 2; + dvbsub->i++; + + if(region_id>=MAX_REGIONS) + return; + + if ( dvbsub->regions[region_id].version_number == region_version_number ) + return; + + dvbsub->regions[region_id].version_number = region_version_number; + + /* Check if region size has changed and fill background. */ + update_region (this, region_id, region_width, region_height, region_fill_flag, region_4_bit_pixel_code); + if ( CLUT_id<MAX_REGIONS ) + dvbsub->regions[region_id].CLUT_id = CLUT_id; + + dvbsub->regions[region_id].objects_start = dvbsub->i; + dvbsub->regions[region_id].objects_end = j; + + for (o = 0; o < 65536; o++) { + dvbsub->regions[region_id].object_pos[o] = 0xffffffff; + } + + while (dvbsub->i < j) { + object_id = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + object_type = (dvbsub->buf[dvbsub->i] & 0xc0) >> 6; + object_provider_flag = (dvbsub->buf[dvbsub->i] & 0x30) >> 4; + object_x = ((dvbsub->buf[dvbsub->i] & 0x0f) << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + object_y = ((dvbsub->buf[dvbsub->i] & 0x0f) << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + + dvbsub->regions[region_id].object_pos[object_id] = (object_x << 16) | object_y; + + if ((object_type == 0x01) || (object_type == 0x02)) { + foreground_pixel_code = dvbsub->buf[dvbsub->i++]; + background_pixel_code = dvbsub->buf[dvbsub->i++]; + } + } + +} + +static void process_object_data_segment (dvb_spu_decoder_t * this) +{ + int segment_length, object_id, object_version_number, object_coding_method, non_modifying_colour_flag; + + int top_field_data_block_length, bottom_field_data_block_length; + + dvbsub_func_t *dvbsub = this->dvbsub; + + int j; + int old_i; + int r; + + dvbsub->page.page_id = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + segment_length = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + + object_id = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + dvbsub->curr_obj = object_id; + object_version_number = (dvbsub->buf[dvbsub->i] & 0xf0) >> 4; + object_coding_method = (dvbsub->buf[dvbsub->i] & 0x0c) >> 2; + non_modifying_colour_flag = (dvbsub->buf[dvbsub->i] & 0x02) >> 1; + dvbsub->i++; + + old_i = dvbsub->i; + for (r = 0; r < MAX_REGIONS; r++) { + + /* If this object is in this region... */ + if (dvbsub->regions[r].img) { + if (dvbsub->regions[r].object_pos[object_id] != 0xffffffff) { + dvbsub->i = old_i; + if (object_coding_method == 0) { + top_field_data_block_length = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + bottom_field_data_block_length = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1]; + dvbsub->i += 2; + + process_pixel_data_sub_block (this, r, object_id, 0, top_field_data_block_length); + + if (bottom_field_data_block_length == 0) + { + /* handle bottom field == top field */ + bottom_field_data_block_length = top_field_data_block_length; + dvbsub->i = old_i + 4; + } + + process_pixel_data_sub_block (this, r, object_id, 1, bottom_field_data_block_length); + } + } + } + } +} + +static void process_display_definition_segment(dvb_spu_decoder_t *this) +{ + /* FIXME: not implemented. */ +} + +static void unlock_mutex_cancellation_func(void *mutex_gen) +{ + pthread_mutex_t *mutex = (pthread_mutex_t*) mutex_gen; + pthread_mutex_unlock(mutex); +} + +/* Thread routine that checks for subtitle timeout periodically. + To avoid unexpected subtitle hiding, calls to this->stream->osd_renderer->show() + should be in blocks like: + + pthread_mutex_lock(&this->dvbsub_osd_mutex); + this->stream->osd_renderer->show(...); + this->dvbsub_hide_timeout.tv_sec = time(NULL) + timeout value; + pthread_cond_signal(&this->dvbsub_restart_timeout); + pthread_mutex_unlock(&this->dvbsub_osd_mutex); + + This ensures that the timeout is changed with the lock held, and + that the thread is signalled to pick up the new timeout. +*/ +static void* dvbsub_timer_func(void *this_gen) +{ + dvb_spu_decoder_t *this = (dvb_spu_decoder_t *) this_gen; + pthread_mutex_lock(&this->dvbsub_osd_mutex); + int i; + + /* If we're cancelled via pthread_cancel, unlock the mutex */ + pthread_cleanup_push(unlock_mutex_cancellation_func, &this->dvbsub_osd_mutex); + + while(1) + { + /* Record the current timeout, and wait - note that pthread_cond_timedwait + will unlock the mutex on entry, and lock it on exit */ + struct timespec timeout = this->dvbsub_hide_timeout; + int result = pthread_cond_timedwait(&this->dvbsub_restart_timeout, + &this->dvbsub_osd_mutex, + &this->dvbsub_hide_timeout); + if(result == ETIMEDOUT && + timeout.tv_sec == this->dvbsub_hide_timeout.tv_sec && + timeout.tv_nsec == this->dvbsub_hide_timeout.tv_nsec) + { + /* We timed out, and no-one changed the timeout underneath us. + Hide the OSD, then wait until we're signalled. */ + if(this && this->stream && this->stream->osd_renderer) + { + for ( i=0; i<MAX_REGIONS; i++ ) { + if ( this->dvbsub->regions[i].osd ) { + this->stream->osd_renderer->hide( this->dvbsub->regions[i].osd, 0 ); + lprintf("thread hiding = %d\n",i); + } + } + } + pthread_cond_wait(&this->dvbsub_restart_timeout, &this->dvbsub_osd_mutex); + } + } + + pthread_cleanup_pop(1); + return NULL; +} + +static void downscale_region_image( region_t *reg, unsigned char *dest, int dest_width ) +{ + float i, k, inc=reg->width/(float)dest_width; + int j; + for ( j=0; j<reg->height; j++ ) { + for ( i=0,k=0; i<reg->width && k<dest_width; i+=inc,k++ ) { + dest[(j*dest_width)+(int)k] = reg->img[(j*reg->width)+(int)i]; + } + } +} + +static void draw_subtitles (dvb_spu_decoder_t * this) +{ + int r; + int display=0; + int64_t dum; + int dest_width=0, dest_height, reg_width; + this->stream->video_out->status(this->stream->video_out, NULL, &dest_width, &dest_height, &dum); + unsigned char tmp[dest_width*576]; + unsigned char *reg; + + if ( !dest_width || !dest_height ) + return; + + /* render all regions onto the page */ + + for ( r=0; r<MAX_REGIONS; r++ ) { + if ( this->dvbsub->page.regions[r].is_visible ) + display++; + } + if ( !display ) + return; + + for (r = 0; r < MAX_REGIONS; r++) { + if (this->dvbsub->regions[r].img) { + if (this->dvbsub->page.regions[r].is_visible && !this->dvbsub->regions[r].empty) { + update_osd( this, r ); + if ( !this->dvbsub->regions[r].osd ) + continue; + /* clear osd */ + this->stream->osd_renderer->clear( this->dvbsub->regions[r].osd ); + if ( this->dvbsub->regions[r].width>dest_width && !(this->stream->video_driver->get_capabilities(this->stream->video_driver) & VO_CAP_CUSTOM_EXTENT_OVERLAY)) { + downscale_region_image(&this->dvbsub->regions[r], tmp, dest_width); + reg = tmp; + reg_width = dest_width; + } + else { + reg = this->dvbsub->regions[r].img; + reg_width = this->dvbsub->regions[r].width; + } + this->stream->osd_renderer->set_palette( this->dvbsub->regions[r].osd, (uint32_t*)(&this->dvbsub->colours[this->dvbsub->regions[r].CLUT_id*256]), &this->dvbsub->trans[this->dvbsub->regions[r].CLUT_id*256]); + this->stream->osd_renderer->draw_bitmap( this->dvbsub->regions[r].osd, reg, 0, 0, reg_width, this->dvbsub->regions[r].height, NULL ); + } + } + } + + pthread_mutex_lock(&this->dvbsub_osd_mutex); + lprintf("this->vpts=%"PRId64"\n",this->vpts); + for ( r=0; r<MAX_REGIONS; r++ ) { + lprintf("region=%d, visible=%d, osd=%d, empty=%d\n", r, this->dvbsub->page.regions[r].is_visible, this->dvbsub->regions[r].osd?1:0, this->dvbsub->regions[r].empty ); + if ( this->dvbsub->page.regions[r].is_visible && this->dvbsub->regions[r].osd && !this->dvbsub->regions[r].empty ) { + this->stream->osd_renderer->set_extent(this->dvbsub->regions[r].osd, SPU_MAX_WIDTH, SPU_MAX_HEIGHT); + this->stream->osd_renderer->set_position( this->dvbsub->regions[r].osd, this->dvbsub->page.regions[r].x, this->dvbsub->page.regions[r].y ); + this->stream->osd_renderer->show( this->dvbsub->regions[r].osd, this->vpts ); + lprintf("show region = %d\n",r); + } + else { + if ( this->dvbsub->regions[r].osd ) { + this->stream->osd_renderer->hide( this->dvbsub->regions[r].osd, this->vpts ); + lprintf("hide region = %d\n",r); + } + } + } + this->dvbsub_hide_timeout.tv_nsec = 0; + this->dvbsub_hide_timeout.tv_sec = time(NULL) + this->dvbsub->page.page_time_out; + lprintf("page_time_out %d\n",this->dvbsub->page.page_time_out); + pthread_cond_signal(&this->dvbsub_restart_timeout); + pthread_mutex_unlock(&this->dvbsub_osd_mutex); +} + +static void spudec_decode_data (spu_decoder_t * this_gen, buf_element_t * buf) +{ + dvb_spu_decoder_t *this = (dvb_spu_decoder_t *) this_gen; + int new_i; + int data_identifier, subtitle_stream_id; + int segment_length, segment_type; + int PES_header_data_length; + int PES_packet_length; + int i; + + if((buf->type & 0xffff0000)!=BUF_SPU_DVB) + return; + + if (buf->decoder_flags & BUF_FLAG_SPECIAL) { + if (buf->decoder_info[1] == BUF_SPECIAL_SPU_DVB_DESCRIPTOR) { + if (buf->decoder_info[2] == 0) { + /* Hide the osd - note that if the timeout thread times out, it'll rehide, which is harmless */ + pthread_mutex_lock(&this->dvbsub_osd_mutex); + for ( i=0; i<MAX_REGIONS; i++ ) { + if ( this->dvbsub->regions[i].osd ) + this->stream->osd_renderer->hide( this->dvbsub->regions[i].osd, 0 ); + } + pthread_mutex_unlock(&this->dvbsub_osd_mutex); + } + else { + xine_fast_memcpy (this->spu_descriptor, buf->decoder_info_ptr[2], buf->decoder_info[2]); + } + } + return; + } + + /* accumulate data */ + if (buf->decoder_info[2]) { + memset (this->pes_pkt, 0xff, 64*1024); + this->pes_pkt_wrptr = this->pes_pkt; + this->pes_pkt_size = buf->decoder_info[2]; + + xine_fast_memcpy (this->pes_pkt, buf->content, buf->size); + this->pes_pkt_wrptr += buf->size; + + this->vpts = 0; + } + else { + if (this->pes_pkt && (this->pes_pkt_wrptr != this->pes_pkt)) { + xine_fast_memcpy (this->pes_pkt_wrptr, buf->content, buf->size); + this->pes_pkt_wrptr += buf->size; + } + } + + /* don't ask metronom for a vpts but rather do the calculation + * because buf->pts could be too far in future and metronom won't accept + * further backwards pts (see metronom_got_spu_packet) */ + if (!this->class->ignore_pts && buf->pts > 0) { + metronom_t *metronom = this->stream->metronom; + int64_t vpts_offset = metronom->get_option( metronom, METRONOM_VPTS_OFFSET ); + int64_t spu_offset = metronom->get_option( metronom, METRONOM_SPU_OFFSET ); + int64_t vpts = (int64_t)(buf->pts)+vpts_offset+spu_offset; + metronom_clock_t *clock = this->stream->xine->clock; + int64_t curvpts = clock->get_current_time( clock ); + /* if buf->pts is unreliable, show page asap (better than nothing) */ + lprintf("spu_vpts=%"PRId64" - current_vpts=%"PRId64"\n", vpts, curvpts); + if ( vpts<=curvpts || (vpts-curvpts)>(5*90000) ) + this->vpts = 0; + else + this->vpts = vpts; + } + + /* completely ignore pts since it makes a lot of problems with various providers */ + /* this->vpts = 0; */ + + /* process the pes section */ + + PES_packet_length = this->pes_pkt_size; + + this->dvbsub->buf = this->pes_pkt; + + this->dvbsub->i = 0; + + data_identifier = this->dvbsub->buf[this->dvbsub->i++]; + subtitle_stream_id = this->dvbsub->buf[this->dvbsub->i++]; + + while (this->dvbsub->i <= (PES_packet_length)) { + /* SUBTITLING SEGMENT */ + this->dvbsub->i++; + segment_type = this->dvbsub->buf[this->dvbsub->i++]; + + this->dvbsub->page.page_id = (this->dvbsub->buf[this->dvbsub->i] << 8) | this->dvbsub->buf[this->dvbsub->i + 1]; + segment_length = (this->dvbsub->buf[this->dvbsub->i + 2] << 8) | this->dvbsub->buf[this->dvbsub->i + 3]; + new_i = this->dvbsub->i + segment_length + 4; + + /* only process complete segments */ + if(new_i > (this->pes_pkt_wrptr - this->pes_pkt)) + break; + /* verify we've the right segment */ + if(this->dvbsub->page.page_id==this->spu_descriptor->comp_page_id){ + /* SEGMENT_DATA_FIELD */ + switch (segment_type & 0xff) { + case 0x10: + process_page_composition_segment (this); + break; + case 0x11: + process_region_composition_segment (this); + break; + case 0x12: + process_CLUT_definition_segment(this); + break; + case 0x13: + process_object_data_segment (this); + break; + case 0x14: + process_display_definition_segment(this); + break; + case 0x80: /* Page is now completely rendered */ + recalculate_trans(this); + draw_subtitles( this ); + break; + case 0xFF: /* stuffing */ + break; + default: + return; + break; + } + } + this->dvbsub->i = new_i; + } +} + +static void spudec_reset (spu_decoder_t * this_gen) +{ + dvb_spu_decoder_t *this = (dvb_spu_decoder_t *) this_gen; + int i; + + /* Hide the osd - if the timeout thread times out, it'll rehide harmlessly */ + pthread_mutex_lock(&this->dvbsub_osd_mutex); + for ( i=0; i<MAX_REGIONS; i++ ) { + if ( this->dvbsub->regions[i].osd ) + this->stream->osd_renderer->hide(this->dvbsub->regions[i].osd, 0); + this->dvbsub->regions[i].version_number = -1; + } + this->dvbsub->page.page_version_number = -1; + reset_clut (this->dvbsub); + + pthread_mutex_unlock(&this->dvbsub_osd_mutex); +} + +static void spudec_discontinuity (spu_decoder_t * this_gen) +{ + /* do nothing */ +} + +static void spudec_dispose (spu_decoder_t * this_gen) +{ + dvb_spu_decoder_t *this = (dvb_spu_decoder_t *) this_gen; + int i; + + pthread_cancel(this->dvbsub_timer_thread); + pthread_join(this->dvbsub_timer_thread, NULL); + pthread_mutex_destroy(&this->dvbsub_osd_mutex); + pthread_cond_destroy(&this->dvbsub_restart_timeout); + + if(this->spu_descriptor){ + free(this->spu_descriptor); + this->spu_descriptor=NULL; + } + + for ( i=0; i<MAX_REGIONS; i++ ) { + if ( this->dvbsub->regions[i].img ) + free( this->dvbsub->regions[i].img ); + if ( this->dvbsub->regions[i].osd ) + this->stream->osd_renderer->free_object( this->dvbsub->regions[i].osd ); + } + + if (this->pes_pkt) + free (this->pes_pkt); + + if (this->dvbsub) + free (this->dvbsub); + + free (this); +} + +static spu_decoder_t *dvb_spu_class_open_plugin (spu_decoder_class_t * class_gen, xine_stream_t * stream) +{ + dvb_spu_decoder_t *this = calloc(1, sizeof (dvb_spu_decoder_t)); + dvb_spu_class_t *class = (dvb_spu_class_t *)class_gen; + +#define YUVA(r, g, b, a) (clut_t) { COMPUTE_V(r, g, b), COMPUTE_U(r, g, b), COMPUTE_V(r, g, b), a } +#define GETBIT(s, v1, v2, tr) \ + r = s + ((i & 1) ? v1 : 0) + ((i & 0x10) ? v2 : 0); \ + g = s + ((i & 2) ? v1 : 0) + ((i & 0x20) ? v2 : 0); \ + b = s + ((i & 4) ? v1 : 0) + ((i & 0x40) ? v2 : 0); \ + a = tr + + if (!default_colours_init) + { + int i; + default_clut[0] = YUVA(0, 0, 0, 0); + for (i = 1; i < 256; i++) { + uint8_t r, g, b, a; + if (i < 8) { + GETBIT(0, 255, 0, 63); + } else switch (i & 0x88) { + case 0x00: GETBIT( 0, 85, 170, 255); break; + case 0x08: GETBIT( 0, 85, 170, 127); break; + case 0x80: GETBIT(127, 43, 85, 255); break; + default : GETBIT( 0, 43, 85, 255); break; + } + default_trans[i] = a; + default_clut[i] = YUVA(r, g, b, a); + } + default_colours_init = 1; + } + + + this->spu_decoder.decode_data = spudec_decode_data; + this->spu_decoder.reset = spudec_reset; + this->spu_decoder.discontinuity = spudec_discontinuity; + this->spu_decoder.dispose = spudec_dispose; + this->spu_decoder.get_interact_info = NULL; + this->spu_decoder.set_button = NULL; + + this->class = class; + this->stream = stream; + + this->pes_pkt = calloc(65, 1024); + this->spu_descriptor = calloc(1, sizeof(spu_dvb_descriptor_t)); + + this->dvbsub = calloc(1, sizeof (dvbsub_func_t)); + + int i; + for (i = 0; i < MAX_REGIONS; i++) { + this->dvbsub->page.regions[i].is_visible = 0; + this->dvbsub->regions[i].img = NULL; + this->dvbsub->regions[i].osd = NULL; + this->dvbsub->regions[i].CLUT_id = 0; + } + + { + xine_spu_opacity_t opacity; + static const clut_t black = { 0, 0, 0, 0 }; + int t; + + _x_spu_get_opacity (this->stream->xine, &opacity); + t = _x_spu_calculate_opacity (&black, 0, &opacity); + + for (i = 0; i < MAX_REGIONS * 256; i++) + this->dvbsub->colours[i].foo = t; + } + + pthread_mutex_init(&this->dvbsub_osd_mutex, NULL); + pthread_cond_init(&this->dvbsub_restart_timeout, NULL); + this->dvbsub_hide_timeout.tv_nsec = 0; + this->dvbsub_hide_timeout.tv_sec = time(NULL); + pthread_create(&this->dvbsub_timer_thread, NULL, dvbsub_timer_func, this); + + return (spu_decoder_t *) this; +} + +static void dvb_spu_decoder_class_dispose (spu_decoder_class_t * this_gen) +{ + dvb_spu_class_t *this = (dvb_spu_class_t *) this_gen; + + this->xine->config->unregister_callback(this->xine->config, "subtitles.dvb.ignore_pts"); + + free (this); +} + +static void *init_spu_decoder_plugin (xine_t * xine, void *data) +{ + + dvb_spu_class_t *this; + this = calloc(1, sizeof (dvb_spu_class_t)); + + this->class.open_plugin = dvb_spu_class_open_plugin; + this->class.identifier = "spudvb"; + this->class.description = N_("DVB subtitle decoder plugin"); + this->class.dispose = dvb_spu_decoder_class_dispose; + + this->xine = xine; + + return &this->class; +} + + +/* plugin catalog information */ +static const uint32_t supported_types[] = { BUF_SPU_DVB, 0 }; + +static const decoder_info_t spudec_info = { + supported_types, /* supported types */ + 1 /* priority */ +}; + +const plugin_info_t xine_plugin_info[] EXPORTED = { +/* type, API, "name", version, special_info, init_function */ + {PLUGIN_SPU_DECODER, 17, "spudvb", XINE_VERSION_CODE, &spudec_info, + &init_spu_decoder_plugin}, + {PLUGIN_NONE, 0, "", 0, NULL, NULL} +}; |