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author | Michael Niedermayer <michaelni@gmx.at> | 2004-07-22 18:55:36 +0000 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2004-07-22 18:55:36 +0000 |
commit | ef9c5d84beb0f0c05e306d4f73f474335519a32c (patch) | |
tree | bec8ce3ab28d5650fa67bed7e98322e4e5ed7376 /libavcodec/g726.c | |
parent | 7344c87aa9786936eebe366c929c8e854c857d5c (diff) | |
download | ffmpeg-streaming-ef9c5d84beb0f0c05e306d4f73f474335519a32c.zip ffmpeg-streaming-ef9c5d84beb0f0c05e306d4f73f474335519a32c.tar.gz |
make comments doxygen compatible
Originally committed as revision 3333 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/g726.c')
-rw-r--r-- | libavcodec/g726.c | 63 |
1 files changed, 32 insertions, 31 deletions
diff --git a/libavcodec/g726.c b/libavcodec/g726.c index c016f32..fdce022 100644 --- a/libavcodec/g726.c +++ b/libavcodec/g726.c @@ -23,15 +23,16 @@ #include "avcodec.h" #include "common.h" -/* +/** + * G.726 11bit float. * G.726 Standard uses rather odd 11bit floating point arithmentic for * numerous occasions. It's a mistery to me why they did it this way * instead of simply using 32bit integer arithmetic. */ typedef struct Float11 { - int sign; /* 1bit sign */ - int exp; /* 4bit exponent */ - int mant; /* 6bit mantissa */ + int sign; /**< 1bit sign */ + int exp; /**< 4bit exponent */ + int mant; /**< 6bit mantissa */ } Float11; static inline Float11* i2f(int16_t i, Float11* f) @@ -61,35 +62,35 @@ static inline int sgn(int value) } typedef struct G726Tables { - int bits; /* bits per sample */ - int* quant; /* quantization table */ - int* iquant; /* inverse quantization table */ - int* W; /* special table #1 ;-) */ - int* F; /* special table #2 */ + int bits; /**< bits per sample */ + int* quant; /**< quantization table */ + int* iquant; /**< inverse quantization table */ + int* W; /**< special table #1 ;-) */ + int* F; /**< special table #2 */ } G726Tables; typedef struct G726Context { - G726Tables* tbls; /* static tables needed for computation */ + G726Tables* tbls; /**< static tables needed for computation */ - Float11 sr[2]; /* prev. reconstructed samples */ - Float11 dq[6]; /* prev. difference */ - int a[2]; /* second order predictor coeffs */ - int b[6]; /* sixth order predictor coeffs */ - int pk[2]; /* signs of prev. 2 sez + dq */ + Float11 sr[2]; /**< prev. reconstructed samples */ + Float11 dq[6]; /**< prev. difference */ + int a[2]; /**< second order predictor coeffs */ + int b[6]; /**< sixth order predictor coeffs */ + int pk[2]; /**< signs of prev. 2 sez + dq */ - int ap; /* scale factor control */ - int yu; /* fast scale factor */ - int yl; /* slow scale factor */ - int dms; /* short average magnitude of F[i] */ - int dml; /* long average magnitude of F[i] */ - int td; /* tone detect */ - - int se; /* estimated signal for the next iteration */ - int sez; /* estimated second order prediction */ - int y; /* quantizer scaling factor for the next iteration */ + int ap; /**< scale factor control */ + int yu; /**< fast scale factor */ + int yl; /**< slow scale factor */ + int dms; /**< short average magnitude of F[i] */ + int dml; /**< long average magnitude of F[i] */ + int td; /**< tone detect */ + + int se; /**< estimated signal for the next iteration */ + int sez; /**< estimated second order prediction */ + int y; /**< quantizer scaling factor for the next iteration */ } G726Context; -static int quant_tbl16[] = /* 16kbit/s 2bits per sample */ +static int quant_tbl16[] = /**< 16kbit/s 2bits per sample */ { 260, INT_MAX }; static int iquant_tbl16[] = { 116, 365, 365, 116 }; @@ -98,7 +99,7 @@ static int W_tbl16[] = static int F_tbl16[] = { 0, 7, 7, 0 }; -static int quant_tbl24[] = /* 24kbit/s 3bits per sample */ +static int quant_tbl24[] = /**< 24kbit/s 3bits per sample */ { 7, 217, 330, INT_MAX }; static int iquant_tbl24[] = { INT_MIN, 135, 273, 373, 373, 273, 135, INT_MIN }; @@ -107,7 +108,7 @@ static int W_tbl24[] = static int F_tbl24[] = { 0, 1, 2, 7, 7, 2, 1, 0 }; -static int quant_tbl32[] = /* 32kbit/s 4bits per sample */ +static int quant_tbl32[] = /**< 32kbit/s 4bits per sample */ { -125, 79, 177, 245, 299, 348, 399, INT_MAX }; static int iquant_tbl32[] = { INT_MIN, 4, 135, 213, 273, 323, 373, 425, @@ -118,7 +119,7 @@ static int W_tbl32[] = static int F_tbl32[] = { 0, 0, 0, 1, 1, 1, 3, 7, 7, 3, 1, 1, 1, 0, 0, 0 }; -static int quant_tbl40[] = /* 40kbit/s 5bits per sample */ +static int quant_tbl40[] = /**< 40kbit/s 5bits per sample */ { -122, -16, 67, 138, 197, 249, 297, 338, 377, 412, 444, 474, 501, 527, 552, INT_MAX }; static int iquant_tbl40[] = @@ -142,7 +143,7 @@ static G726Tables G726Tables_pool[] = { 5, quant_tbl40, iquant_tbl40, W_tbl40, F_tbl40 }}; -/* +/** * Para 4.2.2 page 18: Adaptive quantizer. */ static inline uint8_t quant(G726Context* c, int d) @@ -168,7 +169,7 @@ static inline uint8_t quant(G726Context* c, int d) return i; } -/* +/** * Para 4.2.3 page 22: Inverse adaptive quantizer. */ static inline int16_t inverse_quant(G726Context* c, int i) |