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#include "mpeg3private.h"
#include "mpeg3protos.h"
#include <stdlib.h>
#include <string.h>
mpeg3_strack_t* mpeg3_new_strack(int id)
{
mpeg3_strack_t *result = calloc(sizeof(mpeg3_strack_t), 1);
result->id = id;
return result;
}
void mpeg3_delete_strack(mpeg3_strack_t *ptr)
{
int i;
for(i = 0; i < ptr->total_subtitles; i++)
{
mpeg3_delete_subtitle(ptr->subtitles[i]);
}
if(ptr->subtitles) free(ptr->subtitles);
if(ptr->offsets) free(ptr->offsets);
free(ptr);
}
void mpeg3_delete_subtitle(mpeg3_subtitle_t *subtitle)
{
/*
* printf("mpeg3_delete_subtitle subtitle=%p subtitle->data=%p %d %d %p %p %p %p\n",
* subtitle,
* subtitle->data,
* subtitle->size,
* subtitle->bytes_read,
* subtitle->image_y,
* subtitle->image_u,
* subtitle->image_v,
* subtitle->image_a);
*/
if(subtitle->data) free(subtitle->data);
if(subtitle->image_y) free(subtitle->image_y);
if(subtitle->image_u) free(subtitle->image_u);
if(subtitle->image_v) free(subtitle->image_v);
if(subtitle->image_a) free(subtitle->image_a);
free(subtitle);
}
void mpeg3_copy_strack(mpeg3_strack_t *dst, mpeg3_strack_t *src)
{
dst->id = src->id;
dst->offsets = calloc(sizeof(int64_t) * src->allocated_offsets, 1);
memcpy(dst->offsets, src->offsets, sizeof(int64_t) * src->total_offsets);
dst->total_offsets = src->total_offsets;
dst->allocated_offsets = src->allocated_offsets;
}
mpeg3_strack_t* mpeg3_get_strack_id(mpeg3_t *file, int id)
{
int i;
for(i = 0; i < file->total_sstreams; i++)
{
if(file->strack[i]->id == id) return file->strack[i];
}
return 0;
}
mpeg3_strack_t* mpeg3_get_strack(mpeg3_t *file, int number)
{
int i;
if(number >= file->total_sstreams || number < 0) return 0;
return file->strack[number];
}
mpeg3_strack_t* mpeg3_create_strack(mpeg3_t *file, int id)
{
int i;
int j;
mpeg3_strack_t *result = 0;
if(!(result = mpeg3_get_strack_id(file, id)))
{
result = mpeg3_new_strack(id);
for(i = 0; i < file->total_sstreams; i++)
{
/* Search for first ID > current id */
if(file->strack[i]->id > id)
{
/* Shift back 1 */
for(j = file->total_sstreams; j >= i; j--)
{
file->strack[j] = file->strack[j - 1];
}
break;
}
}
/* Store in table */
file->strack[i] = result;
file->total_sstreams++;
}
return result;
}
void mpeg3_append_subtitle_offset(mpeg3_strack_t *dst, int64_t program_offset)
{
int new_total = dst->total_offsets + 1;
if(new_total >= dst->allocated_offsets)
{
int new_allocated = MAX(new_total, dst->allocated_offsets * 2);
int64_t *new_offsets = malloc(sizeof(int64_t) * new_allocated);
if(dst->offsets)
{
memcpy(new_offsets, dst->offsets, dst->total_offsets * sizeof(int64_t));
free(dst->offsets);
}
dst->offsets = new_offsets;
dst->allocated_offsets = new_allocated;
}
dst->offsets[dst->total_offsets++] = program_offset;
}
void mpeg3_append_subtitle(mpeg3_strack_t *strack, mpeg3_subtitle_t *subtitle)
{
int new_total = strack->total_subtitles + 1;
if(new_total >= strack->allocated_subtitles)
{
int new_allocated = MAX(new_total, strack->allocated_subtitles * 2);
mpeg3_subtitle_t **new_subtitles = malloc(sizeof(mpeg3_subtitle_t*) * new_allocated);
if(strack->subtitles)
{
memcpy(new_subtitles,
strack->subtitles,
strack->total_subtitles * sizeof(mpeg3_subtitle_t*));
free(strack->subtitles);
}
strack->subtitles = new_subtitles;
strack->allocated_subtitles = new_allocated;
}
strack->subtitles[strack->total_subtitles++] = subtitle;
while(strack->total_subtitles > MPEG3_MAX_SUBTITLES)
mpeg3_pop_subtitle(strack, 0, 1);
}
void mpeg3_pop_subtitle(mpeg3_strack_t *strack, int number, int delete_it)
{
int i;
if(strack->total_subtitles)
{
if(delete_it) mpeg3_delete_subtitle(strack->subtitles[number]);
for(i = number; i < strack->total_subtitles - 1; i++)
strack->subtitles[i] = strack->subtitles[i + 1];
strack->total_subtitles--;
}
}
void mpeg3_pop_all_subtitles(mpeg3_strack_t *strack)
{
int i;
for(i = 0; i < strack->total_subtitles; i++)
{
mpeg3_delete_subtitle(strack->subtitles[i]);
}
strack->total_subtitles = 0;
}
mpeg3_subtitle_t* mpeg3_get_subtitle(mpeg3_strack_t *strack)
{
int i;
for(i = 0; i < strack->total_subtitles; i++)
{
if(!strack->subtitles[i]->active)
return strack->subtitles[i];
}
return 0;
}
int mpeg3_subtitle_tracks(mpeg3_t *file)
{
return file->total_sstreams;
}
void mpeg3_show_subtitle(mpeg3_t *file, int track)
{
file->subtitle_track = track;
}
void mpeg3_reset_subtitles(mpeg3_t *file)
{
int i;
for(i = 0; i < file->total_sstreams; i++)
{
mpeg3_pop_all_subtitles(file->strack[i]);
}
}
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