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blender-archive/source/blender/include/BSE_seqaudio.h
Wouter van Heyst 4f27386740 Commit message and the brunt of the code courtesy of intrr, apologies for the
size of this;


Finally, the Sequencer audio support and global audio/animation sync stuff!
(See http://intrr.org/blender/audiosequencer.html)

Stuff that has been done:

./source/blender/blenloader/intern/writefile.c
./source/blender/blenloader/intern/readfile.c

Added code to make it handle sounds used by audio strips, and to convert
Scene data from older (<2.28) versions to init Scene global audio settings
(Scene->audio) to defaults.

./source/blender/include/BSE_seqaudio.h
./source/blender/src/seqaudio.c

The main audio routines that start/stop/scrub the audio stream at
a certain frame position, provide the frame reference for the current
stream position, mix the audio, convert the audio, mixdown the audio
into a file.

./source/blender/makesdna/DNA_sound_types.h

Introduced new variables in the bSound struct to accomodate the sample
data after converted to the scene's global mixing format (stream, streamlen).
Also added a new flag SOUND_FLAGS_SEQUENCE that gets set if the Sound
belongs to a sequence strip.

./source/blender/makesdna/DNA_scene_types.h

Added AudioData struct, which holds scene-global audio settings.

./source/blender/makesdna/DNA_sequence_types.h

Added support for audio strips. Some variables to hold Panning/Attenuation
information, position information, reference to the sample, and some flags.

./source/blender/makesdna/DNA_userdef_types.h
./source/blender/src/usiblender.c

Added a "Mixing buffer size" userpref. Made the versions stuff initialize
it to a default for versions <2.28.

./source/blender/makesdna/DNA_space_types.h
./source/blender/src/filesel.c

Added a Cyan dot to .WAV files. Any other suggestions on a better color? :)

./source/blender/src/editsound.c

Changes (fixes) to the WAV file loader, re-enabled some gameengine code that
is needed for dealing with bSounds and bSamples.

./source/blender/src/editipo.c
./source/blender/src/drawseq.c
./source/blender/src/editnla.c
./source/blender/src/space.c
./source/blender/src/drawview.c
./source/blender/src/renderwin.c
./source/blender/src/headerbuttons.c

 - Created two different wrappers for update_for_newframe(), one which scrubs
   the audio, one which doesn't.
 - Replaced some of the occurences of update_for_newframe() with
   update_for_newframe_muted(), which doesn't scrub the audio.
 - In drawview.c: Changed the synchronization scheme to get the current audio
   position from the audio engine, and use that as a reference for setting
   CFRA. Implements a/v sync and framedrop.
 - In editipo.c: Changed handling of Fac IPOs to be usable for audio strips as
   volume envelopes.
 - In space.c: Added the mixing buffer size Userpref, enabled audio scrubbing
   (update_for_newframe()) for moving the sequence editor framebar.

./source/blender/src/editseq.c

Added support for audio strips and a default directory for WAV files which
gets saved from the last Shift-A operation.

./source/blender/src/buttons.c

Added Scene-global audio sequencer settings in Sound buttons.

./source/blender/src/sequence.c

Various stuff that deals with handling audio strips differently than
usual strips.
2003-07-13 20:16:56 +00:00

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1.6 KiB
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/**
* ***** BEGIN GPL/BL DUAL 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. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2003 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*
*/
#ifndef BSE_SEQAUDIO_H
#define BSE_SEQAUDIO_H
#include "SDL.h"
/* muha, we don't init (no SDL_main)! */
#ifdef main
# undef main
#endif
#include "DNA_sound_types.h"
void audio_mixdown();
void audio_makestream(bSound *sound);
void audiostream_play(Uint32 startframe, Uint32 duration, int mixdown);
void audiostream_start(Uint32 frame);
void audiostream_scrub(Uint32 frame);
void audiostream_stop(void);
int audiostream_pos(void);
#endif