stsd.c
上传用户:luping1608
上传日期:2007-01-06
资源大小:38k
文件大小:3k
- #include "quicktime.h"
- int quicktime_stsd_init(quicktime_stsd_t *stsd)
- {
- stsd->version = 0;
- stsd->flags = 0;
- stsd->total_entries = 0;
- }
- int quicktime_stsd_init_table(quicktime_stsd_t *stsd)
- {
- if(!stsd->total_entries)
- {
- stsd->total_entries = 1;
- stsd->table = (quicktime_stsd_table_t*)malloc(sizeof(quicktime_stsd_table_t) * stsd->total_entries);
- quicktime_stsd_table_init(&(stsd->table[0]));
- }
- }
- int quicktime_stsd_init_video(quicktime_t *file,
- quicktime_stsd_t *stsd,
- int frame_w,
- int frame_h,
- float frame_rate,
- char *compression)
- {
- quicktime_stsd_table_t *table;
- quicktime_stsd_init_table(stsd);
- table = &(stsd->table[0]);
- quicktime_copy_char32(table->format, compression);
- table->width = frame_w;
- table->height = frame_h;
- table->frames_per_sample = 1;
- table->depth = 24;
- table->ctab_id = 65535;
- }
- int quicktime_stsd_init_audio(quicktime_t *file,
- quicktime_stsd_t *stsd,
- int channels,
- int sample_rate,
- int bits,
- char *compressor)
- {
- quicktime_stsd_table_t *table;
- quicktime_stsd_init_table(stsd);
- table = &(stsd->table[0]);
- quicktime_copy_char32(table->format, compressor);
- table->channels = channels;
- table->sample_size = bits;
- table->sample_rate = sample_rate;
- }
- int quicktime_stsd_delete(quicktime_stsd_t *stsd)
- {
- int i;
- if(stsd->total_entries)
- {
- for(i = 0; i < stsd->total_entries; i++)
- quicktime_stsd_table_delete(&(stsd->table[i]));
- free(stsd->table);
- }
- stsd->total_entries = 0;
- }
- int quicktime_stsd_dump(void *minf_ptr, quicktime_stsd_t *stsd)
- {
- int i;
- printf(" sample descriptionn");
- printf(" version %dn", stsd->version);
- printf(" flags %dn", stsd->flags);
- printf(" total_entries %dn", stsd->total_entries);
-
- for(i = 0; i < stsd->total_entries; i++)
- {
- quicktime_stsd_table_dump(minf_ptr, &(stsd->table[i]));
- }
- }
- int quicktime_read_stsd(quicktime_t *file, quicktime_minf_t *minf, quicktime_stsd_t *stsd)
- {
- int i;
- quicktime_atom_t leaf_atom;
- stsd->version = quicktime_read_char(file);
- stsd->flags = quicktime_read_int24(file);
- stsd->total_entries = quicktime_read_int32(file);
- stsd->table = (quicktime_stsd_table_t*)malloc(sizeof(quicktime_stsd_table_t) * stsd->total_entries);
- for(i = 0; i < stsd->total_entries; i++)
- {
- quicktime_stsd_table_init(&(stsd->table[i]));
- quicktime_read_stsd_table(file, minf, &(stsd->table[i]));
- }
- }
- int quicktime_write_stsd(quicktime_t *file, quicktime_minf_t *minf, quicktime_stsd_t *stsd)
- {
- quicktime_atom_t atom;
- int i;
- quicktime_atom_write_header(file, &atom, "stsd");
- quicktime_write_char(file, stsd->version);
- quicktime_write_int24(file, stsd->flags);
- quicktime_write_int32(file, stsd->total_entries);
- for(i = 0; i < stsd->total_entries; i++)
- {
- quicktime_write_stsd_table(file, minf, stsd->table);
- }
- quicktime_atom_write_footer(file, &atom);
- }