int ff_wma_run_level_decode(AVCodecContext* avctx, GetBitContext* gb,
VLC *vlc,
const uint16_t *level_table, const uint16_t *run_table,
- int version, int16_t *ptr, int offset,
+ int version, WMACoef *ptr, int offset,
int num_coefs, int block_len, int frame_len_bits,
int coef_nb_bits)
{
int code, run, level, sign;
- int16_t* eptr = ptr + num_coefs;
+ WMACoef* eptr = ptr + num_coefs;
for(;;) {
code = get_vlc2(gb, vlc->table, VLCBITS, VLCMAX);
if (code < 0)
#define VLCBITS 9
#define VLCMAX ((22+VLCBITS-1)/VLCBITS)
+typedef float WMACoef; ///< type for decoded coefficients, int16_t would be enough for wma 1/2
+
typedef struct CoefVLCTable {
int n; ///< total number of codes
int max_level;
int exponents_bsize[MAX_CHANNELS]; ///< log2 ratio frame/exp. length
DECLARE_ALIGNED_16(float, exponents[MAX_CHANNELS][BLOCK_MAX_SIZE]);
float max_exponent[MAX_CHANNELS];
- int16_t coefs1[MAX_CHANNELS][BLOCK_MAX_SIZE];
+ WMACoef coefs1[MAX_CHANNELS][BLOCK_MAX_SIZE];
DECLARE_ALIGNED_16(float, coefs[MAX_CHANNELS][BLOCK_MAX_SIZE]);
DECLARE_ALIGNED_16(FFTSample, output[BLOCK_MAX_SIZE * 2]);
MDCTContext mdct_ctx[BLOCK_NB_SIZES];
int ff_wma_run_level_decode(AVCodecContext* avctx, GetBitContext* gb,
VLC *vlc,
const uint16_t *level_table, const uint16_t *run_table,
- int version, int16_t *ptr, int offset,
+ int version, WMACoef *ptr, int offset,
int num_coefs, int block_len, int frame_len_bits,
int coef_nb_bits);
for(ch = 0; ch < s->nb_channels; ch++) {
if (s->channel_coded[ch]) {
int tindex;
- int16_t* ptr = &s->coefs1[ch][0];
+ WMACoef* ptr = &s->coefs1[ch][0];
/* special VLC tables are used for ms stereo because
there is potentially less energy there */
tindex = (ch == 1 && s->ms_stereo);
- memset(ptr, 0, s->block_len * sizeof(int16_t));
+ memset(ptr, 0, s->block_len * sizeof(WMACoef));
ff_wma_run_level_decode(s->avctx, &s->gb, &s->coef_vlc[tindex],
s->level_table[tindex], s->run_table[tindex],
0, ptr, 0, nb_coefs[ch],
/* finally compute the MDCT coefficients */
for(ch = 0; ch < s->nb_channels; ch++) {
if (s->channel_coded[ch]) {
- int16_t *coefs1;
+ WMACoef *coefs1;
float *coefs, *exponents, mult, mult1, noise;
int i, j, n, n1, last_high_band, esize;
float exp_power[HIGH_BAND_MAX_SIZE];
for(ch = 0; ch < s->nb_channels; ch++) {
if (s->channel_coded[ch]) {
- int16_t *coefs1;
+ WMACoef *coefs1;
float *coefs, *exponents, mult;
int i, n;
for(ch = 0; ch < s->nb_channels; ch++) {
if (s->channel_coded[ch]) {
int run, tindex;
- int16_t *ptr, *eptr;
+ WMACoef *ptr, *eptr;
tindex = (ch == 1 && s->ms_stereo);
ptr = &s->coefs1[ch][0];
eptr = ptr + nb_coefs[ch];