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b6a1e5236e
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144 Commits

Author SHA1 Message Date
Justin Ruggles
b6a1e5236e Split out mantissa quantization into separate functions. 
Originally committed as revision 25997 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:53:23 +00:00
Justin Ruggles
5b44ede0ba cosmetics: rearrange some functions 
Originally committed as revision 25996 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:53:20 +00:00
Justin Ruggles
d7da80806c Reverse the exponent & exponent strategy array arrangement to simplify the 
per-channel exponent strategy decision.  This will also make it easier to
plug-in other exponent strategy algorithms.

Originally committed as revision 25995 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:53:17 +00:00
Justin Ruggles
67d979fede Move writing of frame to the output bitstream to a separate function. 
Originally committed as revision 25994 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:53:13 +00:00
Justin Ruggles
084f5c5afe cosmetics: remove a comment and just spacing 
Originally committed as revision 25993 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:53:10 +00:00
Justin Ruggles
160d85f5b0 Split frame size adjustment into a separate function. 
Originally committed as revision 25992 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:53:06 +00:00
Justin Ruggles
dfdf73eb1a Split exponent processing into separate functions. 
Originally committed as revision 25991 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:53:02 +00:00
Justin Ruggles
0a0a8500fb Split applying of MDCT into several separate functions. 
Originally committed as revision 25990 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:59 +00:00
Justin Ruggles
4acc790f3c Split input sample deinterleaving into a separate function. 
Originally committed as revision 25989 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:56 +00:00
Justin Ruggles
152cc52803 Separate functionally different calculations in ac3_encode_frame(). 
Originally committed as revision 25988 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:53 +00:00
Justin Ruggles
98f6ee4453 cosmetics: rename 2 variables 
Originally committed as revision 25987 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:49 +00:00
Justin Ruggles
12ed622699 Deinterleave whole frame at once instead of per-block. 
This reduces the amount of memcpy() by using pointers to overlap samples for
successive blocks rather than copying.

Originally committed as revision 25986 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:46 +00:00
Justin Ruggles
e0685bc98f cosmetics: add & alter some comments 
Originally committed as revision 25985 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:43 +00:00
Justin Ruggles
282255bbd2 Split setting of bandwidth into a separate function. 
Originally committed as revision 25984 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:40 +00:00
Justin Ruggles
e35c984a5d Move setting of bitstream_id and bitstream_mode to ac3_encode_init(). 
Originally committed as revision 25983 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:37 +00:00
Justin Ruggles
ddf63d37b8 Improve ac3_encode_init() error reporting. 
Return AVERROR(EINVAL) instead of -1. Propogate errors from called functions.
Add some error log printouts.

Originally committed as revision 25982 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:34 +00:00
Justin Ruggles
b64d842c1d cosmetics: indent after last commit 
Originally committed as revision 25981 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:30 +00:00
Justin Ruggles
99ca4f73f0 Don't use nested loops to iterate valid sample rates. 
Eliminates a goto and mirrors the bitrate validation.

Originally committed as revision 25980 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:25 +00:00
Justin Ruggles
1607db0a95 Remove some duplicate local copies of avctx fields. 
This is an av_cold function, and we don't need to duplicate variables just to
save a few characters.

Originally committed as revision 25979 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:21 +00:00
Justin Ruggles
8f60f70d44 Split validation of initial user options into a separate function. 
Originally committed as revision 25978 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:18 +00:00
Justin Ruggles
427e2293d3 Use bytes instead of 16-bit words for frame size. 
Originally committed as revision 25977 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:14 +00:00
Justin Ruggles
eed00252c9 cosmetics: rename variable 'n' to 'pad_bytes' 
Originally committed as revision 25976 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:12 +00:00
Justin Ruggles
1971ab6ed6 Change output_frame_end() to return void. The frame size is already known. 
Originally committed as revision 25975 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:08 +00:00
Justin Ruggles
e8b552a818 cosmetics: pretty-printing 
Originally committed as revision 25974 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:04 +00:00
Justin Ruggles
ce67b7cd38 cosmetics: rename some iterator variables to match what they represent 
Originally committed as revision 25973 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:52:00 +00:00
Justin Ruggles
777732756a cosmetics: rename a variable for consistency 
Originally committed as revision 25972 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:56 +00:00
Justin Ruggles
aab45ca3de cosmetics: rename exp_samples and global_exp to exp_shift. 
Originally committed as revision 25971 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:53 +00:00
Justin Ruggles
23c5b361a6 cosmetics: rename 2 functions 
Originally committed as revision 25970 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:50 +00:00
Justin Ruggles
47ae6e795b define AC3_CRITICAL_BANDS and use it in the AC-3 encoder and decoder. 
Originally committed as revision 25967 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:40 +00:00
Justin Ruggles
0454b55801 Use sizeof(array value) instead of sizeof(int16_t). 
Originally committed as revision 25966 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:36 +00:00
Justin Ruggles
a0a9204e49 cosmetics: use lowercase letters for function names 
Originally committed as revision 25965 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:33 +00:00
Justin Ruggles
c36ce0f8df cosmetics: add new function documentation and clean up existing documentation 
Originally committed as revision 25964 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:30 +00:00
Justin Ruggles
2f8ae52228 cosmetics: add more space between functions 
Originally committed as revision 25963 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:26 +00:00
Justin Ruggles
e77fd066fb cosmetics: rearrange some functions/typedefs/macros 
Originally committed as revision 25962 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:23 +00:00
Justin Ruggles
02877def49 Simplify group size calculation in 2 places. 
Originally committed as revision 25961 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:20 +00:00
Justin Ruggles
9816155337 cosmetics: make a switch/case more compact 
Originally committed as revision 25960 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:17 +00:00
Justin Ruggles
b84a211bc8 Clean up fft_init() and mdct_init() 
Originally committed as revision 25959 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:12 +00:00
Justin Ruggles
6a988808a4 cosmetics: pretty-printing, alignment, etc... 
Originally committed as revision 25958 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:09 +00:00
Justin Ruggles
a913b5cf60 Remove unneeded #include 
Originally committed as revision 25957 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:05 +00:00
Justin Ruggles
918cd2255c Simplify fix15(). 
Turn it into 2 macros, and use av_clip_int16() and lrintf().
This matches the int16 to float sample conversion in audioconvert.c.
The regression test output is different due to lrintf() rounding.

Originally committed as revision 25956 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:02 +00:00
Justin Ruggles
228315bbd3 Fix the fixed-point MDCT and FFT tests so that they actually compile and work. 
Also, use LFG from libavutil instead of random().

Originally committed as revision 25955 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:58 +00:00
Justin Ruggles
a8d2b06b7c Split out initialization of MDCT tables into a separate function. 
Originally committed as revision 25954 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:54 +00:00
Justin Ruggles
0796546370 cosmetics: Document AC3EncodeContext fields. 
Originally committed as revision 25953 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:49 +00:00
Justin Ruggles
22c0b03c8f Remove unneeded debugging messages. 
Originally committed as revision 25952 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:45 +00:00
Justin Ruggles
1fda2c10f6 cosmetics: Define AC3_WINDOW_SIZE and use it instead of AC3_BLOCK_SIZE*2. 
Originally committed as revision 25951 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:40 +00:00
Justin Ruggles
7066cc8f2b cosmetics: use better (and shared) macro names for some constant values 
Originally committed as revision 25950 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:34 +00:00
Justin Ruggles
a657899cf7 Remove duplicate AC3EncodeContext fields, sr_shift and sr_code. 
Originally committed as revision 25949 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:30 +00:00
Justin Ruggles
2d2692eb49 cosmetics: rename some fields in AC3EncodeContext 
Originally committed as revision 25948 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:27 +00:00
Justin Ruggles
9cb5903299 cosmetics: change all short to int16_t 
Originally committed as revision 25947 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:23 +00:00
Justin Ruggles
2be209b213 Change some unsigned types to signed types in AC3EncodeContext 
Originally committed as revision 25946 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:50:20 +00:00