X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fac3dsp.h;h=c33a0bee84fb92112d4a307c8f19595c97664519;hb=f5950b8fd61ec85e0ad8790bea56b37ceea19436;hp=882eb7681aced6fdb84c2c10e856dd6f13192494;hpb=30b39164256999efc8d77edc85e2e0b963c24834;p=ffmpeg

diff --git a/libavcodec/ac3dsp.h b/libavcodec/ac3dsp.h
index 882eb7681ac..c33a0bee84f 100644
--- a/libavcodec/ac3dsp.h
+++ b/libavcodec/ac3dsp.h
@@ -1,5 +1,5 @@
 /*
- * AC-3 DSP utils
+ * AC-3 DSP functions
  * Copyright (c) 2011 Justin Ruggles
  *
  * This file is part of Libav.
@@ -126,12 +126,31 @@ typedef struct AC3DSPContext {
 
     void (*extract_exponents)(uint8_t *exp, int32_t *coef, int nb_coefs);
 
-    void (*downmix)(float **samples, float (*matrix)[2], int out_ch,
-                    int in_ch, int len);
+    int out_channels;
+    int in_channels;
+    void (*downmix)(float **samples, float **matrix, int len);
+
+    /**
+     * Apply symmetric window in 16-bit fixed-point.
+     * @param output destination array
+     *               constraints: 16-byte aligned
+     * @param input  source array
+     *               constraints: 16-byte aligned
+     * @param window window array
+     *               constraints: 16-byte aligned, at least len/2 elements
+     * @param len    full window length
+     *               constraints: multiple of ? greater than zero
+     */
+    void (*apply_window_int16)(int16_t *output, const int16_t *input,
+                               const int16_t *window, unsigned int len);
 } AC3DSPContext;
 
 void ff_ac3dsp_init    (AC3DSPContext *c, int bit_exact);
 void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact);
 void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact);
 
+void ff_ac3dsp_downmix(AC3DSPContext *c, float **samples, float **matrix,
+                       int out_ch, int in_ch, int len);
+void ff_ac3dsp_set_downmix_x86(AC3DSPContext *c);
+
 #endif /* AVCODEC_AC3DSP_H */