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Diffstat (limited to 'source/blender/imbuf/intern/IMB_indexer.h')
-rw-r--r-- | source/blender/imbuf/intern/IMB_indexer.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/source/blender/imbuf/intern/IMB_indexer.h b/source/blender/imbuf/intern/IMB_indexer.h new file mode 100644 index 00000000000..f55420fd106 --- /dev/null +++ b/source/blender/imbuf/intern/IMB_indexer.h @@ -0,0 +1,133 @@ +/** + * $Id$ + * + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program 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. + * + * This program 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 02110-1301, USA. + * + * + * Contributor(s): Peter Schlaile + * + * ***** END GPL LICENSE BLOCK ***** + */ + + +#ifndef IMB_INDEXER_H +#define IMB_INDEXER_H + +#ifdef WIN32 +#include <io.h> +#endif + +#include <stdlib.h> +#include <stdio.h> +#include "BKE_utildefines.h" +#include "IMB_anim.h" + +/* + seperate animation index files to solve the following problems: + + a) different timecodes within one file (like DTS/PTS, Timecode-Track, + "implicit" timecodes within DV-files and HDV-files etc.) + b) seeking difficulties within ffmpeg for files with timestamp holes + c) broken files that miss several frames / have varying framerates + d) use proxies accordingly + + ... we need index files, that provide us with + + the binary(!) position, where we have to seek into the file *and* + the continuous frame number (ignoring the holes) starting from the + beginning of the file, so that we know, which proxy frame to serve. + + This index has to be only built once for a file and is written into + the BL_proxy directory structure for later reuse in different blender files. + +*/ + +typedef struct anim_index_entry { + int frameno; + unsigned long long seek_pos; + unsigned long long seek_pos_dts; + unsigned long long pts; +} anim_index_entry; + +struct anim_index { + char name[256]; + + int num_entries; + struct anim_index_entry * entries; +}; + +struct anim_index_builder; + +typedef struct anim_index_builder { + FILE * fp; + char name[FILE_MAXDIR + FILE_MAXFILE]; + char temp_name[FILE_MAXDIR + FILE_MAXFILE]; + + void * private_data; + + void (*delete_priv_data)(struct anim_index_builder * idx); + void (*proc_frame)(struct anim_index_builder * idx, + unsigned char * buffer, + int data_size, + struct anim_index_entry * entry); +} anim_index_builder; + +anim_index_builder * IMB_index_builder_create(const char * name); +void IMB_index_builder_add_entry(anim_index_builder * fp, + int frameno, unsigned long long seek_pos, + unsigned long long seek_pos_dts, + unsigned long long pts); + +void IMB_index_builder_proc_frame(anim_index_builder * fp, + unsigned char * buffer, + int data_size, + int frameno, unsigned long long seek_pos, + unsigned long long seek_pos_dts, + unsigned long long pts); + +void IMB_index_builder_finish(anim_index_builder * fp, int rollback); + +struct anim_index * IMB_indexer_open(const char * name); +unsigned long long IMB_indexer_get_seek_pos( + struct anim_index * idx, int frameno_index); +unsigned long long IMB_indexer_get_seek_pos_dts( + struct anim_index * idx, int frameno_index); + +int IMB_indexer_get_frame_index(struct anim_index * idx, int frameno); +unsigned long long IMB_indexer_get_pts(struct anim_index * idx, + int frame_index); +int IMB_indexer_get_duration(struct anim_index * idx); + +int IMB_indexer_can_scan(struct anim_index * idx, + int old_frame_index, int new_frame_index); + +void IMB_indexer_close(struct anim_index * idx); + +void IMB_free_indices(struct anim * anim); + +int IMB_anim_index_get_frame_index( + struct anim * anim, IMB_Timecode_Type tc, int position); + +struct anim * IMB_anim_open_proxy( + struct anim * anim, IMB_Proxy_Size preview_size); +struct anim_index * IMB_anim_open_index( + struct anim * anim, IMB_Timecode_Type tc); + +int IMB_proxy_size_to_array_index(IMB_Proxy_Size pr_size); +int IMB_timecode_to_array_index(IMB_Timecode_Type tc); + +#endif |