int quicktime_make_streamable(char *in_path, char *out_path) { quicktime_t file, *old_file, new_file; int moov_exists = 0, mdat_exists = 0, result, atoms = 1; int64_t mdat_start, mdat_size; quicktime_atom_t leaf_atom; int64_t moov_length; quicktime_init(&file); /* find the moov atom in the old file */ if(!(file.stream = fopen(in_path, "rb"))) { perror("quicktime_make_streamable"); return 1; } file.total_length = quicktime_get_file_length(in_path); /* get the locations of moov and mdat atoms */ do { /*printf("%x\n", quicktime_position(&file)); */ result = quicktime_atom_read_header(&file, &leaf_atom); if(!result) { if(quicktime_atom_is(&leaf_atom, "moov")) { moov_exists = atoms; moov_length = leaf_atom.size; } else if(quicktime_atom_is(&leaf_atom, "mdat")) { mdat_start = quicktime_position(&file) - HEADER_LENGTH; mdat_size = leaf_atom.size; mdat_exists = atoms; } quicktime_atom_skip(&file, &leaf_atom); atoms++; } }while(!result && quicktime_position(&file) < file.total_length); fclose(file.stream); if(!moov_exists) { printf("quicktime_make_streamable: no moov atom\n"); return 1; } if(!mdat_exists) { printf("quicktime_make_streamable: no mdat atom\n"); return 1; } /* copy the old file to the new file */ if(moov_exists && mdat_exists) { /* moov wasn't the first atom */ if(moov_exists > 1) { char *buffer; int64_t buf_size = 1000000; result = 0; /* read the header proper */ if(!(old_file = quicktime_open(in_path, 1, 0))) { return 1; } quicktime_shift_offsets(&(old_file->moov), moov_length); /* open the output file */ if(!(new_file.stream = fopen(out_path, "wb"))) { perror("quicktime_make_streamable"); result = 1; } else { /* set up some flags */ new_file.wr = 1; new_file.rd = 0; quicktime_write_moov(&new_file, &(old_file->moov)); quicktime_set_position(old_file, mdat_start); if(!(buffer = calloc(1, buf_size))) { result = 1; printf("quicktime_make_streamable: out of memory\n"); } else { while(quicktime_position(old_file) < mdat_start + mdat_size && !result) { if(quicktime_position(old_file) + buf_size > mdat_start + mdat_size) buf_size = mdat_start + mdat_size - quicktime_position(old_file); if(!quicktime_read_data(old_file, buffer, buf_size)) result = 1; if(!result) { if(!quicktime_write_data(&new_file, buffer, buf_size)) result = 1; } } free(buffer); } fclose(new_file.stream); } quicktime_close(old_file); } else { printf("quicktime_make_streamable: header already at 0 offset\n"); return 0; } } return 0; }
int quicktime_make_streamable(char *in_path, char *out_path) { quicktime_t file, *old_file, new_file; int moov_exists = 0, mdat_exists = 0, result, atoms = 1; int64_t mdat_start, mdat_size; quicktime_atom_t leaf_atom; int64_t moov_start, moov_end; int ftyp_exists = 0; int ftyp_size = 0; unsigned char *ftyp_data = 0; quicktime_init(&file); /* find the moov atom in the old file */ if(!(file.stream = fopen(in_path, "rb"))) { perror("quicktime_make_streamable"); return 1; } file.total_length = quicktime_get_file_length(in_path); /* get the locations of moov and mdat atoms */ do { result = quicktime_atom_read_header(&file, &leaf_atom); //printf("0x%llx %s\n", quicktime_position(&file), leaf_atom.type); if(!result) { if(quicktime_atom_is(&leaf_atom, "ftyp")) { ftyp_exists = 1; ftyp_data = calloc(1, leaf_atom.size); ftyp_size = leaf_atom.size; quicktime_set_position(&file, quicktime_position(&file) - HEADER_LENGTH); quicktime_read_data(&file, (char*)ftyp_data, ftyp_size); } else if(quicktime_atom_is(&leaf_atom, "moov")) { moov_exists = atoms; } else if(quicktime_atom_is(&leaf_atom, "mdat")) { mdat_start = quicktime_position(&file) - HEADER_LENGTH; mdat_size = leaf_atom.size; mdat_exists = atoms; } quicktime_atom_skip(&file, &leaf_atom); atoms++; } }while(!result && quicktime_position(&file) < file.total_length); fclose(file.stream); if(!moov_exists) { printf("quicktime_make_streamable: no moov atom\n"); if(ftyp_data) free(ftyp_data); return 1; } if(!mdat_exists) { printf("quicktime_make_streamable: no mdat atom\n"); if(ftyp_data) free(ftyp_data); return 1; } /* copy the old file to the new file */ if(moov_exists && mdat_exists) { /* moov wasn't the first atom */ if(moov_exists > 1) { char *buffer; int64_t buf_size = 1000000; result = 0; /* read the header proper */ if(!(old_file = quicktime_open(in_path, 1, 0))) { if(ftyp_data) free(ftyp_data); return 1; } /* open the output file */ if(!(new_file.stream = fopen(out_path, "wb"))) { perror("quicktime_make_streamable"); result = 1; } else { /* set up some flags */ new_file.wr = 1; new_file.rd = 0; /* Write ftyp header */ if(ftyp_exists) { quicktime_write_data(&new_file, (char*)ftyp_data, ftyp_size); } /* Write moov once to get final size with our substituted headers */ moov_start = quicktime_position(&new_file); quicktime_write_moov(&new_file, &(old_file->moov), 0); moov_end = quicktime_position(&new_file); printf("make_streamable 0x%llx 0x%llx\n", (long long)moov_end - moov_start, (long long)mdat_start); quicktime_shift_offsets(&(old_file->moov), moov_end - moov_start - mdat_start + ftyp_size); /* Write again with shifted offsets */ quicktime_set_position(&new_file, moov_start); quicktime_write_moov(&new_file, &(old_file->moov), 0); quicktime_set_position(old_file, mdat_start); if(!(buffer = calloc(1, buf_size))) { result = 1; printf("quicktime_make_streamable: out of memory\n"); } else { while(quicktime_position(old_file) < mdat_start + mdat_size && !result) { if(quicktime_position(old_file) + buf_size > mdat_start + mdat_size) buf_size = mdat_start + mdat_size - quicktime_position(old_file); if(!quicktime_read_data(old_file, buffer, buf_size)) result = 1; if(!result) { if(!quicktime_write_data(&new_file, buffer, buf_size)) result = 1; } } free(buffer); } fclose(new_file.stream); } quicktime_close(old_file); } else { printf("quicktime_make_streamable: header already at 0 offset\n"); if(ftyp_data) free(ftyp_data); return 0; } } if(ftyp_data) free(ftyp_data); return 0; }