-#include "funcprotos.h"
-#include "quicktime.h"
-
-
-
-void quicktime_stsz_init(quicktime_stsz_t *stsz)
-{
- stsz->version = 0;
- stsz->flags = 0;
- stsz->sample_size = 0;
- stsz->total_entries = 0;
- stsz->entries_allocated = 0;
- stsz->table = 0;
-}
-
-void quicktime_stsz_init_video(quicktime_t *file, quicktime_stsz_t *stsz)
-{
- stsz->sample_size = 0;
- if(!stsz->entries_allocated)
- {
- stsz->entries_allocated = 2048;
- stsz->total_entries = 0;
- stsz->table = (quicktime_stsz_table_t*)calloc(sizeof(quicktime_stsz_table_t),
- stsz->entries_allocated);
-//printf("quicktime_stsz_init_video 1 %p\n", stsz->table);
- }
-}
-
-void quicktime_stsz_init_audio(quicktime_t *file,
- quicktime_stsz_t *stsz,
- int channels,
- int bits,
- char *compressor)
-{
- /*stsz->sample_size = channels * bits / 8; */
-
- stsz->table = 0;
- stsz->sample_size = 0;
-
-//printf("quicktime_stsz_init_audio 1 %d\n", stsz->sample_size);
- stsz->total_entries = 0; /* set this when closing */
- stsz->entries_allocated = 0;
-}
-
-void quicktime_stsz_delete(quicktime_stsz_t *stsz)
-{
- if(!stsz->sample_size && stsz->total_entries) free(stsz->table);
- stsz->table = 0;
- stsz->total_entries = 0;
- stsz->entries_allocated = 0;
-}
-
-void quicktime_stsz_dump(quicktime_stsz_t *stsz)
-{
- int i;
- printf(" sample size\n");
- printf(" version %d\n", stsz->version);
- printf(" flags %ld\n", stsz->flags);
- printf(" sample_size %ld\n", stsz->sample_size);
- printf(" total_entries %ld\n", stsz->total_entries);
-
- if(!stsz->sample_size)
- {
- for(i = 0; i < stsz->total_entries; i++)
- {
- printf(" sample_size 0x%lx\n", stsz->table[i].size);
- }
- }
-}
-
-void quicktime_read_stsz(quicktime_t *file, quicktime_stsz_t *stsz)
-{
- int i;
- stsz->version = quicktime_read_char(file);
- stsz->flags = quicktime_read_int24(file);
- stsz->sample_size = quicktime_read_int32(file);
- stsz->total_entries = quicktime_read_int32(file);
- stsz->entries_allocated = stsz->total_entries;
-//printf("quicktime_read_stsz 1 %d\n", stsz->sample_size);
- if(!stsz->sample_size)
- {
- stsz->table = (quicktime_stsz_table_t*)malloc(sizeof(quicktime_stsz_table_t) * stsz->entries_allocated);
- for(i = 0; i < stsz->total_entries; i++)
- {
- stsz->table[i].size = quicktime_read_int32(file);
- }
- }
-}
-
-void quicktime_write_stsz(quicktime_t *file, quicktime_stsz_t *stsz)
-{
- int i;
- quicktime_atom_t atom;
- quicktime_atom_write_header(file, &atom, "stsz");
-
-/* optimize if possible */
-/* Xanim requires an unoptimized table for video. */
-/* if(!stsz->sample_size) */
-/* { */
-/* for(i = 0, result = 0; i < stsz->total_entries && !result; i++) */
-/* { */
-/* if(stsz->table[i].size != stsz->table[0].size) result = 1; */
-/* } */
-/* */
-/* if(!result) */
-/* { */
-/* stsz->sample_size = stsz->table[0].size; */
-/* stsz->total_entries = 0; */
-/* free(stsz->table); */
-/* } */
-/* } */
-
- quicktime_write_char(file, stsz->version);
- quicktime_write_int24(file, stsz->flags);
-
-// Force idiosynchratic handling of fixed bitrate audio.
-// Since audio has millions of samples it's not practical to declare a size
-// of each sample. Instead Quicktime stores a 1 for every sample's size and
-// relies on the samples per chunk table to determine the chunk size.
- quicktime_write_int32(file, stsz->sample_size);
- quicktime_write_int32(file, stsz->total_entries);
-
- if(!stsz->sample_size)
- {
- for(i = 0; i < stsz->total_entries; i++)
- {
- quicktime_write_int32(file, stsz->table[i].size);
- }
- }
-
- quicktime_atom_write_footer(file, &atom);
-}
-
-// Sample starts on 0
-void quicktime_update_stsz(quicktime_stsz_t *stsz,
- long sample,
- long sample_size)
-{
- if(!stsz->sample_size)
- {
- if(sample >= stsz->entries_allocated)
- {
- stsz->entries_allocated = (sample + 1) * 2;
-//printf("quicktime_update_stsz 1 %d %d\n", sample, sample_size);
- stsz->table = (quicktime_stsz_table_t *)realloc(stsz->table,
- sizeof(quicktime_stsz_table_t) * stsz->entries_allocated);
-//printf("quicktime_update_stsz 2 %d %d\n", sample, sample_size);
- }
-
- stsz->table[sample].size = sample_size;
- if(sample >= stsz->total_entries) stsz->total_entries = sample + 1;
- }
-
-//printf("quicktime_update_stsz 5 %d %d\n", sample, sample_size);
-}
-
-
-int quicktime_sample_size(quicktime_trak_t *trak, int sample)
-{
- quicktime_stsz_t *stsz = &trak->mdia.minf.stbl.stsz;
- if( stsz->sample_size ) return stsz->sample_size;
- if( sample < stsz->total_entries && sample >= 0 )
- return stsz->table[sample].size;
- return 0;
-}