diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/g726.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/g726.c | 49 |
1 files changed, 24 insertions, 25 deletions
diff --git a/contrib/ffmpeg/libavcodec/g726.c b/contrib/ffmpeg/libavcodec/g726.c index 07af33122..d0073c1b4 100644 --- a/contrib/ffmpeg/libavcodec/g726.c +++ b/contrib/ffmpeg/libavcodec/g726.c @@ -23,7 +23,6 @@ */ #include <limits.h> #include "avcodec.h" -#include "common.h" #include "bitstream.h" /** @@ -65,14 +64,14 @@ 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 */ + const int* quant; /**< quantization table */ + const int* iquant; /**< inverse quantization table */ + const int* W; /**< special table #1 ;-) */ + const int* F; /**< special table #2 */ } G726Tables; typedef struct G726Context { - G726Tables* tbls; /**< static tables needed for computation */ + const G726Tables* tbls; /**< static tables needed for computation */ Float11 sr[2]; /**< prev. reconstructed samples */ Float11 dq[6]; /**< prev. difference */ @@ -92,53 +91,53 @@ typedef struct G726Context { int y; /**< quantizer scaling factor for the next iteration */ } G726Context; -static int quant_tbl16[] = /**< 16kbit/s 2bits per sample */ +static const int quant_tbl16[] = /**< 16kbit/s 2bits per sample */ { 260, INT_MAX }; -static int iquant_tbl16[] = +static const int iquant_tbl16[] = { 116, 365, 365, 116 }; -static int W_tbl16[] = +static const int W_tbl16[] = { -22, 439, 439, -22 }; -static int F_tbl16[] = +static const int F_tbl16[] = { 0, 7, 7, 0 }; -static int quant_tbl24[] = /**< 24kbit/s 3bits per sample */ +static const int quant_tbl24[] = /**< 24kbit/s 3bits per sample */ { 7, 217, 330, INT_MAX }; -static int iquant_tbl24[] = +static const int iquant_tbl24[] = { INT_MIN, 135, 273, 373, 373, 273, 135, INT_MIN }; -static int W_tbl24[] = +static const int W_tbl24[] = { -4, 30, 137, 582, 582, 137, 30, -4 }; -static int F_tbl24[] = +static const int F_tbl24[] = { 0, 1, 2, 7, 7, 2, 1, 0 }; -static int quant_tbl32[] = /**< 32kbit/s 4bits per sample */ +static const int quant_tbl32[] = /**< 32kbit/s 4bits per sample */ { -125, 79, 177, 245, 299, 348, 399, INT_MAX }; -static int iquant_tbl32[] = +static const int iquant_tbl32[] = { INT_MIN, 4, 135, 213, 273, 323, 373, 425, 425, 373, 323, 273, 213, 135, 4, INT_MIN }; -static int W_tbl32[] = +static const int W_tbl32[] = { -12, 18, 41, 64, 112, 198, 355, 1122, 1122, 355, 198, 112, 64, 41, 18, -12}; -static int F_tbl32[] = +static const 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 const 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[] = +static const int iquant_tbl40[] = { INT_MIN, -66, 28, 104, 169, 224, 274, 318, 358, 395, 429, 459, 488, 514, 539, 566, 566, 539, 514, 488, 459, 429, 395, 358, 318, 274, 224, 169, 104, 28, -66, INT_MIN }; -static int W_tbl40[] = +static const int W_tbl40[] = { 14, 14, 24, 39, 40, 41, 58, 100, 141, 179, 219, 280, 358, 440, 529, 696, 696, 529, 440, 358, 280, 219, 179, 141, 100, 58, 41, 40, 39, 24, 14, 14 }; -static int F_tbl40[] = +static const int F_tbl40[] = { 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; -static G726Tables G726Tables_pool[] = +static const G726Tables G726Tables_pool[] = {{ 2, quant_tbl16, iquant_tbl16, W_tbl16, F_tbl16 }, { 3, quant_tbl24, iquant_tbl24, W_tbl24, F_tbl24 }, { 4, quant_tbl32, iquant_tbl32, W_tbl32, F_tbl32 }, @@ -374,7 +373,7 @@ static int g726_encode_frame(AVCodecContext *avctx, static int g726_decode_frame(AVCodecContext *avctx, void *data, int *data_size, - uint8_t *buf, int buf_size) + const uint8_t *buf, int buf_size) { AVG726Context *c = avctx->priv_data; short *samples = data; @@ -388,7 +387,7 @@ static int g726_decode_frame(AVCodecContext *avctx, mask = (1<<c->code_size) - 1; init_get_bits(&gb, buf, buf_size * 8); if (c->bits_left) { - int s = c->code_size - c->bits_left;; + int s = c->code_size - c->bits_left; code = (c->bit_buffer << s) | get_bits(&gb, s); *samples++ = g726_decode(&c->c, code & mask); } |