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Code Issues Releases Activity

Add two more sizes to ff_sine_windows[] and also pad it with NULLs so

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that FF_ELEMS(ff_sine_windows[x]) == 1 << x.

Fix issue 1384.

Originally committed as revision 19862 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2009-09-15 16:18:16 +00:00
parent 05db409c28
commit 6776061b04
5 changed files with 15 additions and 9 deletions
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4
libavcodec/dsputil.h
View File

@ -760,13 +760,15 @@ void ff_kbd_window_init(float *window, float alpha, int n);
* @param n size of half window
*/
void ff_sine_window_init(float *window, int n);
extern float ff_sine_32 [ 32];
extern float ff_sine_64 [ 64];
extern float ff_sine_128 [ 128];
extern float ff_sine_256 [ 256];
extern float ff_sine_512 [ 512];
extern float ff_sine_1024[1024];
extern float ff_sine_2048[2048];
extern float ff_sine_4096[4096];
extern float * const ff_sine_windows[6];
extern float * const ff_sine_windows[13];
int ff_mdct_init(MDCTContext *s, int nbits, int inverse, double scale);
void ff_imdct_calc_c(MDCTContext *s, FFTSample *output, const FFTSample *input);

6
libavcodec/mdct.c
View File

@ -48,13 +48,17 @@ av_cold void ff_kbd_window_init(float *window, float alpha, int n)
window[i] = sqrt(local_window[i] / sum);
}
DECLARE_ALIGNED(16, float, ff_sine_32 [ 32]);
DECLARE_ALIGNED(16, float, ff_sine_64 [ 64]);
DECLARE_ALIGNED(16, float, ff_sine_128 [ 128]);
DECLARE_ALIGNED(16, float, ff_sine_256 [ 256]);
DECLARE_ALIGNED(16, float, ff_sine_512 [ 512]);
DECLARE_ALIGNED(16, float, ff_sine_1024[1024]);
DECLARE_ALIGNED(16, float, ff_sine_2048[2048]);
DECLARE_ALIGNED(16, float, ff_sine_4096[4096]);
float * const ff_sine_windows[6] = {
float * const ff_sine_windows[] = {
NULL, NULL, NULL, NULL, NULL, // unused
ff_sine_32 , ff_sine_64 ,
ff_sine_128, ff_sine_256, ff_sine_512, ff_sine_1024, ff_sine_2048, ff_sine_4096
};

8
libavcodec/twinvq.c
View File

@ -648,7 +648,7 @@ static void imdct_and_window(TwinContext *tctx, enum FrameType ftype, int wtype,
tctx->dsp.vector_fmul_window(out2,
prev_buf + (bsize-wsize)/2,
buf1 + bsize*j,
ff_sine_windows[av_log2(wsize) - 7],
ff_sine_windows[av_log2(wsize)],
0.0,
wsize/2);
out2 += wsize;
@ -903,9 +903,9 @@ static av_cold void init_mdct_win(TwinContext *tctx)
}
ff_sine_window_init(ff_sine_windows[av_log2(size_m) - 7], size_m );
ff_sine_window_init(ff_sine_windows[av_log2(size_s/2) - 7], size_s/2);
ff_sine_window_init(ff_sine_windows[av_log2(mtab->size) - 7], mtab->size);
ff_sine_window_init(ff_sine_windows[av_log2(size_m) ], size_m );
ff_sine_window_init(ff_sine_windows[av_log2(size_s/2) ], size_s/2);
ff_sine_window_init(ff_sine_windows[av_log2(mtab->size)], mtab->size);
}
/**

4
libavcodec/wma.c
View File

@ -341,8 +341,8 @@ int ff_wma_init(AVCodecContext *avctx, int flags2)
for (i = 0; i < s->nb_block_sizes; i++) {
int n;
n = 1 << (s->frame_len_bits - i);
ff_sine_window_init(ff_sine_windows[s->frame_len_bits - i - 7], n);
s->windows[i] = ff_sine_windows[s->frame_len_bits - i - 7];
ff_sine_window_init(ff_sine_windows[s->frame_len_bits - i], n);
s->windows[i] = ff_sine_windows[s->frame_len_bits - i];
}
s->reset_block_lengths = 1;

2
libavcodec/wmaprodec.c
View File

@ -426,7 +426,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
/** init MDCT windows: simple sinus window */
for (i = 0; i < WMAPRO_BLOCK_SIZES; i++) {
const int n = 1 << (WMAPRO_BLOCK_MAX_BITS - i);
const int win_idx = WMAPRO_BLOCK_MAX_BITS - i - 7;
const int win_idx = WMAPRO_BLOCK_MAX_BITS - i;
ff_sine_window_init(ff_sine_windows[win_idx], n);
s->windows[WMAPRO_BLOCK_SIZES - i - 1] = ff_sine_windows[win_idx];
}