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author | 2012-02-16 09:47:18 +0000 | |
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committer | 2012-02-16 09:47:18 +0000 | |
commit | f0823886a66100e193d6eeb0402eb872a67fa07d (patch) | |
tree | a68b35942d63e5fcaf2311812dba976ad18cd5b6 /src/lib/util/avcomp.h | |
parent | e6dad3759374373e3ce69a76869f16e83ba74df5 (diff) |
Major CHD/chdman update. The CHD version number has been increased
from 4 to 5. This means any diff CHDs will no longer work. If you
absolutely need to keep the data for any existing ones you have,
find both the diff CHD and the original CHD for the game in question
and upgrade using these commands:
rename diff\game.dif diff\game-old.dif
chdman copy -i diff\game-old.dif -ip roms\game.chd -o diff\game.dif -op roms\game.chd -c none
Specifics regarding this change:
Defined a new CHD version 5. New features/behaviors of this version:
- support for up to 4 codecs; each block can use 1 of the 4
- new LZMA codec, which tends to do better than zlib overall
- new FLAC codec, primarily used for CDs (but can be applied anywhere)
- upgraded AVHuff codec now uses FLAC for encoding audio
- new Huffman codec, used to catch more nearly-uncompressable blocks
- compressed CHDs now use a compressed map for significant savings
- CHDs now are aware of a "unit" size; each hunk holds 1 or more units
(in general units map to sectors for hard disks/CDs)
- diff'ing against a parent now diffs at the unit level, greatly
improving compression
Rewrote and modernized chd.c. CHD versions prior to 3 are unsupported,
and version 3/4 CHDs are only supported for reading. Creating a new
CHD now leaves the file open. Added methods to read and write at the
unit and byte level, removing the need to handle this manually. Added
metadata access methods that pass astrings and dynamic_buffers to
simplify the interfaces. A companion class chd_compressor now
implements full multithreaded compression, analyzing and compressing
multiple hunks independently in parallel. Split the codec
implementations out into a separate file chdcodec.*
Updated harddisk.c and cdrom.c to rely on the caching/byte-level read/
write capabilities of the chd_file class. cdrom.c (and chdman) now also
pad CDs to 4-frame boundaries instead of hunk boundaries, ensuring that
the same SHA1 hashes are produced regardless of the hunk size.
Rewrote chdman.exe entirely, switching from positional parameters to
proper options. Use "chdman help" to get a list of commands, and
"chdman help <command>" to get help for any particular command. Many
redundant commands were removed now that additional flexibility is
available. Some basic mappings:
Old: chdman -createblankhd <out.chd> <cyls> <heads> <secs>
New: chdman createhd -o <out.chd> -chs <cyls>,<heads>,<secs>
Old: chdman -createuncomphd <in.raw> <out.chd> ....
New: chdman createhd -i <in.raw> -o <out.chd> -c none ....
Old: chdman -verifyfix <in.chd>
New: chdman verify -i <in.chd> -f
Old: chdman -merge <parent.chd> <diff.chd> <out.chd>
New: chdman copy -i <diff.chd> -ip <parent.chd> -o <out.chd>
Old: chdman -diff <parent.chd> <compare.chd> <diff.chd>
New: chdman copy -i <compare.chd> -o <diff.chd> -op <parent.chd>
Old: chdman -update <in.chd> <out.chd>
New: chdman copy -i <in.chd> -o <out.chd>
Added new core file coretmpl.h to hold core template classes. For now
just one class, dynamic_array<> is defined, which acts like an array
of a given object but which can be appended to and/or resized. Also
defines dynamic_buffer as dynamic_array<UINT8> for holding an
arbitrary buffer of bytes. Expect to see these used a lot.
Added new core helper hashing.c/.h which defines classes for each of
the common hashing methods and creator classes to wrap the
computation of these hashes. A future work item is to reimplement
the core emulator hashing code using these.
Split bit buffer helpers out into C++ classes and into their own
public header in bitstream.h.
Updated huffman.c/.h to C++, and changed the interface to make it
more flexible to use in nonstandard ways. Also added huffman compression
of the static tree for slightly better compression rates.
Created flac.c/.h as simplified C++ wrappers around the FLAC interface.
A future work item is to convert the samples sound device to a modern
device and leverage this for reading FLAC files.
Renamed avcomp.* to avhuff.*, updated to C++, and added support for
FLAC as the audio encoding mechanism. The old huffman audio is still
supported for decode only.
Added a variant of core_fload that loads to a dynamic_buffer.
Tweaked winwork.c a bit to not limit the maximum number of processors
unless the work queue was created with the WORK_QUEUE_FLAG_HIGH_FREQ
option. Further adjustments here are likely going to be necessary.
Fixed bug in aviio.c which caused errors when reading some AVI files.
Diffstat (limited to 'src/lib/util/avcomp.h')
-rw-r--r-- | src/lib/util/avcomp.h | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/src/lib/util/avcomp.h b/src/lib/util/avcomp.h deleted file mode 100644 index ee9bba8a192..00000000000 --- a/src/lib/util/avcomp.h +++ /dev/null @@ -1,140 +0,0 @@ -/*************************************************************************** - - avcomp.h - - Audio/video compression and decompression helpers. - -**************************************************************************** - - Copyright Aaron Giles - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are - met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - * Neither the name 'MAME' nor the names of its contributors may be - used to endorse or promote products derived from this software - without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR - IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT, - INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. - -***************************************************************************/ - -#ifndef __AVCOMP_H__ -#define __AVCOMP_H__ - -#include "osdcore.h" -#include "bitmap.h" - - -/*************************************************************************** - CONSTANTS -***************************************************************************/ - -/* errors */ -enum _avcomp_error -{ - AVCERR_NONE = 0, - AVCERR_INVALID_DATA, - AVCERR_VIDEO_TOO_LARGE, - AVCERR_AUDIO_TOO_LARGE, - AVCERR_METADATA_TOO_LARGE, - AVCERR_OUT_OF_MEMORY, - AVCERR_COMPRESSION_ERROR, - AVCERR_TOO_MANY_CHANNELS, - AVCERR_INVALID_CONFIGURATION -}; -typedef enum _avcomp_error avcomp_error; - -/* default decompression parameters */ -#define AVCOMP_ENABLE_META (1 << 0) -#define AVCOMP_ENABLE_VIDEO (1 << 1) -#define AVCOMP_ENABLE_AUDIO(x) (1 << (2 + (x))) -#define AVCOMP_ENABLE_DEFAULT (~0) - - - -/*************************************************************************** - TYPE DEFINITIONS -***************************************************************************/ - -/* compression configuration */ -struct av_codec_compress_config -{ - av_codec_compress_config() - : channels(0), - samples(0), - metalength(0), - metadata(NULL) - { - memset(audio, 0, sizeof(audio)); - } - - bitmap_yuy16 video; /* pointer to video bitmap */ - UINT32 channels; /* number of channels */ - UINT32 samples; /* number of samples per channel */ - INT16 * audio[16]; /* pointer to individual audio channels */ - UINT32 metalength; /* length of metadata */ - UINT8 * metadata; /* pointer to metadata buffer */ -}; - - -/* decompression configuration */ -struct av_codec_decompress_config -{ - av_codec_decompress_config() - : maxsamples(0), - actsamples(0), - maxmetalength(0), - actmetalength(0), - metadata(NULL) - { - memset(audio, 0, sizeof(audio)); - } - - bitmap_yuy16 video; /* pointer to video bitmap */ - UINT32 maxsamples; /* maximum number of samples per channel */ - UINT32 * actsamples; /* actual number of samples per channel */ - INT16 * audio[16]; /* pointer to individual audio channels */ - UINT32 maxmetalength; /* maximum length of metadata */ - UINT32 * actmetalength; /* actual length of metadata */ - UINT8 * metadata; /* pointer to metadata buffer */ -}; - - -/* opaque state */ -struct avcomp_state; - - - -/*************************************************************************** - PROTOTYPES -***************************************************************************/ - -avcomp_state *avcomp_init(UINT32 maxwidth, UINT32 maxheight, UINT32 maxchannels); -void avcomp_free(avcomp_state *state); - -void avcomp_config_compress(avcomp_state *state, av_codec_compress_config *config); -void avcomp_config_decompress(avcomp_state *state, av_codec_decompress_config *config); - -avcomp_error avcomp_encode_data(avcomp_state *state, const UINT8 *source, UINT8 *dest, UINT32 *complength); -avcomp_error avcomp_decode_data(avcomp_state *state, const UINT8 *source, UINT32 complength, UINT8 *dest); - -#endif |