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xine_spudvb_decoder.c    992 lines (835 with data), 29.6 kB

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/*
* Copyright (C) 2008 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_internal.h"
#include "bswap.h"
#include "osd.h"
#define MAX_REGIONS 7
/*#define LOG 1*/
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 nibble_flag;
int in_scanline;
page_t page;
region_t regions[MAX_REGIONS];
clut_t colours[MAX_REGIONS*256];
unsigned char trans[MAX_REGIONS*256];
} 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 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];
/* reject invalid sizes and set some limits ! */
if ( region_width<=0 || region_height<=0 || region_width>1920 || region_height>1080 ) {
free( reg->img );
reg->img = NULL;
#ifdef LOG
printf("SPUDVB: rejected region %d = %dx%d\n", region_id, region_width, region_height );
#endif
return;
}
if ( (reg->width*reg->height) < (region_width*region_height) ) {
#ifdef LOG
printf("SPUDVB: update size of region %d = %dx%d\n", region_id, region_width, region_height);
#endif
free( reg->img );
reg->img = NULL;
}
if ( !reg->img ) {
if ( !(reg->img=malloc(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;
#ifdef LOG
printf("SPUDVB : FILL REGION %d\n", region_id);
#endif
}
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)
{
dvbsub_func_t *const dvbsub = this->dvbsub;
const int 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;
const int x2 = dvbsub->x + run_length;
while (dvbsub->x < x2) {
do_plot (this, r, dvbsub->x, dvbsub->y, pixel);
dvbsub->x++;
}
}
static uint8_t next_nibble (dvb_spu_decoder_t * this)
{
dvbsub_func_t *dvbsub = this->dvbsub;
dvbsub->nibble_flag = !dvbsub->nibble_flag;
if (dvbsub->nibble_flag) /* Inverted! */
return (dvbsub->buf[dvbsub->i] & 0xf0) >> 4;
else
return (dvbsub->buf[dvbsub->i++] & 0x0f);
}
static void decode_4bit_pixel_code_string (dvb_spu_decoder_t * this, int r, int object_id, int ofs, int n)
{
dvbsub_func_t *const dvbsub = this->dvbsub;
if (dvbsub->in_scanline == 0) {
dvbsub->in_scanline = 1;
}
dvbsub->nibble_flag = 0;
const int j = dvbsub->i + n;
while (dvbsub->i < j) {
int bits = 0;
const uint8_t next_bits = next_nibble (this);
if (next_bits != 0) {
const uint8_t pixel_code = next_bits;
plot (this, r, 1, pixel_code);
bits += 4;
}
else {
bits += 4;
const uint8_t data = next_nibble (this);
const uint8_t switch_1 = (data & 0x08) >> 3;
bits++;
if (switch_1 == 0) {
const uint8_t run_length = (data & 0x07);
bits += 3;
if (run_length != 0) {
plot (this, r, run_length + 2, 0);
}
else {
break;
}
}
else {
const uint8_t switch_2 = (data & 0x04) >> 2;
bits++;
if (switch_2 == 0) {
const uint8_t run_length = (data & 0x03);
bits += 2;
const uint8_t pixel_code = next_nibble (this);
bits += 4;
plot (this, r, run_length + 4, pixel_code);
}
else {
const uint8_t switch_3 = (data & 0x03);
bits += 2;
switch (switch_3) {
case 0:
plot (this, r, 1, 0);
break;
case 1:
plot (this, r, 2, 0);
break;
case 2:
{
const uint8_t run_length = next_nibble (this);
bits += 4;
const uint8_t pixel_code = next_nibble (this);
bits += 4;
plot (this, r, run_length + 9, pixel_code);
}
break;
case 3:
{
uint8_t run_length = next_nibble (this);
run_length = (run_length << 4) | next_nibble (this);
bits += 8;
const uint8_t pixel_code = next_nibble (this);
bits += 4;
plot (this, r, run_length + 25, pixel_code);
}
}
}
}
}
}
if (dvbsub->nibble_flag == 1) {
dvbsub->i++;
dvbsub->nibble_flag = 0;
}
}
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>15)) {
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;
if (Y_value==0) {
dvbsub->trans[(CLUT_id*256)+CLUT_entry_id]=T_value;
} else {
dvbsub->trans[(CLUT_id*256)+CLUT_entry_id]=255;
}
}
static void process_CLUT_definition_segment(dvb_spu_decoder_t *this) {
dvbsub_func_t *dvbsub = this->dvbsub;
/*
const uint16_t page_id= _X_BE_16(&dvbsub->buf[dvbsub->i]);
*/
dvbsub->i+=2;
const uint16_t segment_length= _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i+=2;
const int j=dvbsub->i+segment_length;
const uint8_t CLUT_id=dvbsub->buf[dvbsub->i++];
/*
const uint8_t CLUT_version_number=(dvbsub->buf[dvbsub->i]&0xf0)>>4;
*/
dvbsub->i++;
while (dvbsub->i < j) {
const uint8_t CLUT_entry_id=dvbsub->buf[dvbsub->i++];
/*
const uint8_t CLUT_flag_2_bit=(dvbsub->buf[dvbsub->i]&0x80)>>7;
const uint8_t CLUT_flag_4_bit=(dvbsub->buf[dvbsub->i]&0x40)>>6;
const uint8_t CLUT_flag_8_bit=(dvbsub->buf[dvbsub->i]&0x20)>>5;
*/
const uint8_t full_range_flag=dvbsub->buf[dvbsub->i]&1;
dvbsub->i++;
int Y_value,
Cr_value,
Cb_value,
T_value;
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)
{
dvbsub_func_t *dvbsub = this->dvbsub;
const int 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) {
const uint8_t data_type = dvbsub->buf[dvbsub->i++];
switch (data_type) {
case 0:
dvbsub->i++;
case 0x11:
decode_4bit_pixel_code_string (this, r, o, ofs, n - 1);
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)
{
dvbsub_func_t *dvbsub = this->dvbsub;
dvbsub->page.page_id = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
const uint16_t segment_length = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
const 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) {
const uint8_t region_id = dvbsub->buf[dvbsub->i++];
dvbsub->i++; /* reserved */
const uint16_t region_x = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
const uint16_t region_y = _X_BE_16(&dvbsub->buf[dvbsub->i]);
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)
{
dvbsub_func_t *dvbsub = this->dvbsub;
dvbsub->page.page_id = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
const uint16_t segment_length = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
const int j = dvbsub->i + segment_length;
const uint8_t region_id = dvbsub->buf[dvbsub->i++];
const uint8_t region_version_number = (dvbsub->buf[dvbsub->i] & 0xf0) >> 4;
const uint8_t region_fill_flag = (dvbsub->buf[dvbsub->i] & 0x08) >> 3;
dvbsub->i++;
const uint16_t region_width = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
const uint16_t region_height = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
/*
const uint8_t region_level_of_compatibility = (dvbsub->buf[dvbsub->i] & 0xe0) >> 5;
const uint8_t region_depth = (dvbsub->buf[dvbsub->i] & 0x1c) >> 2;
*/
dvbsub->i++;
const uint8_t CLUT_id = dvbsub->buf[dvbsub->i++];
/*
const uint8_t region_8_bit_pixel_code = dvbsub->buf[dvbsub->i];
*/
dvbsub->i++;
const uint8_t region_4_bit_pixel_code = (dvbsub->buf[dvbsub->i] & 0xf0) >> 4;
/*
const uint8_t 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;
{
int o;
for (o = 0; o < 65536; o++) {
dvbsub->regions[region_id].object_pos[o] = 0xffffffff;
}
}
while (dvbsub->i < j) {
const uint16_t object_id = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
const uint8_t object_type = (dvbsub->buf[dvbsub->i] & 0xc0) >> 6;
/*
const uint8_t object_provider_flag = (dvbsub->buf[dvbsub->i] & 0x30) >> 4;
*/
const uint16_t object_x = ((dvbsub->buf[dvbsub->i] & 0x0f) << 8) | dvbsub->buf[dvbsub->i + 1];
dvbsub->i += 2;
const uint16_t 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)) {
/*
const uint8_t foreground_pixel_code = dvbsub->buf[dvbsub->i];
const uint8_t background_pixel_code = dvbsub->buf[dvbsub->i+1];
*/
dvbsub->i += 2;
}
}
}
static void process_object_data_segment (dvb_spu_decoder_t * this)
{
dvbsub_func_t *dvbsub = this->dvbsub;
dvbsub->page.page_id = (dvbsub->buf[dvbsub->i] << 8) | dvbsub->buf[dvbsub->i + 1];
dvbsub->i += 2;
/*
const uint16_t segment_length = _X_BE_16(&dvbsub->buf[dvbsub->i]);
*/
dvbsub->i += 2;
const uint16_t object_id = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
dvbsub->curr_obj = object_id;
const uint8_t object_coding_method = (dvbsub->buf[dvbsub->i] & 0x0c) >> 2;
/*
const uint8_t object_version_number = (dvbsub->buf[dvbsub->i] & 0xf0) >> 4;
const uint8_t non_modifying_colour_flag = (dvbsub->buf[dvbsub->i] & 0x02) >> 1;
*/
dvbsub->i++;
if ( object_coding_method != 0 )
return;
const int old_i = dvbsub->i;
int r;
for (r = 0; r < MAX_REGIONS; r++) {
/* If this object is in this region... */
if (!dvbsub->regions[r].img)
continue;
if (dvbsub->regions[r].object_pos[object_id] == 0xffffffff)
continue;
dvbsub->i = old_i;
const uint16_t top_field_data_block_length = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
const uint16_t bottom_field_data_block_length = _X_BE_16(&dvbsub->buf[dvbsub->i]);
dvbsub->i += 2;
process_pixel_data_sub_block (this, r, object_id, 0, top_field_data_block_length);
process_pixel_data_sub_block (this, r, object_id, 1, bottom_field_data_block_length);
}
}
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);
/* 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;
const 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)
continue;
/* 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) {
int i;
for ( i=0; i<MAX_REGIONS; i++ ) {
if ( !this->dvbsub->regions[i].osd )
continue;
this->stream->osd_renderer->hide( this->dvbsub->regions[i].osd, 0 );
#ifdef LOG
printf("SPUDVB: thread hiding = %d\n",i);
#endif
}
}
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)
{
int64_t dum;
int dest_width=0, dest_height;
this->stream->video_out->status(this->stream->video_out, NULL, &dest_width, &dest_height, &dum);
if ( !dest_width )
return;
/* render all regions onto the page */
{
int r;
int display = 0;
for ( r=0; r<MAX_REGIONS; r++ ) {
if ( this->dvbsub->page.regions[r].is_visible ) {
display = 1;
break;
}
}
if ( !display )
return;
}
int r;
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 );
uint8_t *reg;
int reg_width;
uint8_t tmp[dest_width*576];
if (this->dvbsub->regions[r].width>dest_width) {
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);
#ifdef LOG
printf("SPUDVB: this->vpts=%"PRId64"\n", this->vpts);
#endif
for ( r=0; r<MAX_REGIONS; r++ ) {
#ifdef LOG
printf("SPUDVB : 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 );
#endif
if ( this->dvbsub->page.regions[r].is_visible && this->dvbsub->regions[r].osd && !this->dvbsub->regions[r].empty ) {
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 );
#ifdef LOG
printf("SPUDVB: show region = %d\n",r);
#endif
}
else {
if ( this->dvbsub->regions[r].osd ) {
this->stream->osd_renderer->hide( this->dvbsub->regions[r].osd, this->vpts );
#ifdef LOG
printf("SPUDVB: hide region = %d\n",r);
#endif
}
}
}
this->dvbsub_hide_timeout.tv_nsec = 0;
this->dvbsub_hide_timeout.tv_sec = time(NULL) + this->dvbsub->page.page_time_out;
#ifdef LOG
printf("SPUDVB: page_time_out %d\n",this->dvbsub->page.page_time_out);
#endif
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;
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);
int i;
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 *const metronom = this->stream->metronom;
const int64_t vpts_offset = metronom->get_option( metronom, METRONOM_VPTS_OFFSET );
const int64_t spu_offset = metronom->get_option( metronom, METRONOM_SPU_OFFSET );
const int64_t vpts = (int64_t)(buf->pts)+vpts_offset+spu_offset;
metronom_clock_t *const clock = this->stream->xine->clock;
const int64_t curvpts = clock->get_current_time( clock );
/* if buf->pts is unreliable, show page asap (better than nothing) */
#ifdef LOG
printf("SPUDVB: spu_vpts=%"PRId64" - current_vpts=%"PRId64"\n", vpts, curvpts);
#endif
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 */
const int PES_packet_length = this->pes_pkt_size;
this->dvbsub->buf = this->pes_pkt;
this->dvbsub->i = 0;
/*
const uint8_t data_identifier = this->dvbsub->buf[this->dvbsub->i];
const uint8_t subtitle_stream_id = this->dvbsub->buf[this->dvbsub->i+1];
*/
this->dvbsub->i += 2;
while (this->dvbsub->i <= (PES_packet_length)) {
/* SUBTITLING SEGMENT */
this->dvbsub->i++;
const uint8_t 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];
const uint16_t segment_length = _X_BE_16(&this->dvbsub->buf[this->dvbsub->i + 2]);
const int 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) {
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:
/* skip display descriptor */
break;
case 0x80:
draw_subtitles( this ); /* Page is now completely rendered */
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;
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;
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);
free(this->spu_descriptor);
this->spu_descriptor=NULL;
int i;
for ( i=0; i<MAX_REGIONS; i++ ) {
free( this->dvbsub->regions[i].img );
if ( this->dvbsub->regions[i].osd )
this->stream->osd_renderer->free_object( this->dvbsub->regions[i].osd );
}
free (this->pes_pkt);
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;
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));
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_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 char *dvb_spu_class_get_identifier (spu_decoder_class_t * this)
{
return "spudvb";
}
static char *dvb_spu_class_get_description (spu_decoder_class_t * this)
{
return "DVB subtitle decoder plugin";
}
static void spu_dvb_ignore_pts_change(void *this_gen, xine_cfg_entry_t *value)
{
dvb_spu_class_t *this = (dvb_spu_class_t *) this_gen;
this->ignore_pts = value->num_value;
}
static void *init_spu_decoder_plugin (xine_t * xine, void *data)
{
dvb_spu_class_t *this = calloc(1, sizeof (dvb_spu_class_t));
this->class.open_plugin = dvb_spu_class_open_plugin;
this->class.get_identifier = dvb_spu_class_get_identifier;
this->class.get_description = dvb_spu_class_get_description;
this->class.dispose = dvb_spu_class_dispose;
this->xine = xine;
this->ignore_pts = xine->config->register_bool(xine->config,
"subtitles.dvb.ignore_pts", 0,
_("Ignore DVB subtitle timing"),
_("Do not use PTS timestamps for DVB subtitle timing"),
1, spu_dvb_ignore_pts_change, this);
return &this->class;
}
/* plugin catalog information */
static 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, 16, "spudvb", XINE_VERSION_CODE, &spudec_info,
&init_spu_decoder_plugin},
{PLUGIN_NONE, 0, "", 0, NULL, NULL}
};