virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

Merge commit '25609b63d2e07d26d610f485a22082d32c96c0f5'

Browse Source 
* commit '25609b63d2e07d26d610f485a22082d32c96c0f5':
  dcadec: store the stereo downmix coefficients as float in the DCAContext.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-11-29 00:23:51 +01:00
commit e9a47896a0
1 changed files with 8 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
libavcodec/dcadec.c
View File

@ -400,7 +400,7 @@ typedef struct {
int scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][2]; ///< scale factors (2 if transient)
int joint_huff[DCA_PRIM_CHANNELS_MAX]; ///< joint subband scale factors codebook
int joint_scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< joint subband scale factors
int downmix_coef[DCA_PRIM_CHANNELS_MAX][2]; ///< stereo downmix coefficients
float downmix_coef[DCA_PRIM_CHANNELS_MAX][2]; ///< stereo downmix coefficients
int dynrange_coef; ///< dynamic range coefficient
int high_freq_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< VQ encoded high frequency subbands
@ -958,8 +958,8 @@ static int dca_subframe_header(DCAContext *s, int base_channel, int block_index)
if (!base_channel && s->prim_channels > 2) {
if (s->downmix) {
for (j = base_channel; j < s->prim_channels; j++) {
s->downmix_coef[j][0] = get_bits(&s->gb, 7);
s->downmix_coef[j][1] = get_bits(&s->gb, 7);
s->downmix_coef[j][0] = dca_downmix_coeffs[get_bits(&s->gb, 7)];
s->downmix_coef[j][1] = dca_downmix_coeffs[get_bits(&s->gb, 7)];
}
} else {
int am = s->amode & DCA_CHANNEL_MASK;
@ -975,8 +975,8 @@ static int dca_subframe_header(DCAContext *s, int base_channel, int block_index)
}
for (j = base_channel; j < s->prim_channels; j++) {
s->downmix_coef[j][0] = dca_default_coeffs[am][j][0];
s->downmix_coef[j][1] = dca_default_coeffs[am][j][1];
s->downmix_coef[j][0] = dca_downmix_coeffs[dca_default_coeffs[am][j][0]];
s->downmix_coef[j][1] = dca_downmix_coeffs[dca_default_coeffs[am][j][1]];
}
}
}
@ -1084,9 +1084,9 @@ static int dca_subframe_header(DCAContext *s, int base_channel, int block_index)
av_log(s->avctx, AV_LOG_DEBUG, "Downmix coeffs:\n");
for (j = 0; j < s->prim_channels; j++) {
av_log(s->avctx, AV_LOG_DEBUG, "Channel 0, %d = %f\n", j,
dca_downmix_coeffs[s->downmix_coef[j][0]]);
s->downmix_coef[j][0]);
av_log(s->avctx, AV_LOG_DEBUG, "Channel 1, %d = %f\n", j,
dca_downmix_coeffs[s->downmix_coef[j][1]]);
s->downmix_coef[j][1]);
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
@ -1185,18 +1185,12 @@ static void lfe_interpolation_fir(DCAContext *s, int decimation_select,
}
static void dca_downmix(float **samples, int srcfmt,
int downmix_coef[DCA_PRIM_CHANNELS_MAX][2],
float coef[DCA_PRIM_CHANNELS_MAX][2],
const int8_t *channel_mapping)
{
int c, l, r, sl, sr, s;
int i;
float t, u, v;
float coef[DCA_PRIM_CHANNELS_MAX][2];
for (i = 0; i < DCA_PRIM_CHANNELS_MAX; i++) {
coef[i][0] = dca_downmix_coeffs[downmix_coef[i][0]];
coef[i][1] = dca_downmix_coeffs[downmix_coef[i][1]];
}
switch (srcfmt) {
case DCA_MONO: