diff options
Diffstat (limited to 'libavcodec/fmtconvert.c')
| -rw-r--r-- | libavcodec/fmtconvert.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libavcodec/fmtconvert.c b/libavcodec/fmtconvert.c index e970755..58fece7 100644 --- a/libavcodec/fmtconvert.c +++ b/libavcodec/fmtconvert.c @@ -56,11 +56,31 @@ static void float_to_int16_interleave_c(int16_t *dst, const float **src, } } +void ff_float_interleave_c(float *dst, const float **src, unsigned int len, + int channels) +{ + int j, c; + unsigned int i; + if (channels == 2) { + for (i = 0; i < len; i++) { + dst[2*i] = src[0][i]; + dst[2*i+1] = src[1][i]; + } + } else if (channels == 1 && len < INT_MAX / sizeof(float)) { + memcpy(dst, src[0], len * sizeof(float)); + } else { + for (c = 0; c < channels; c++) + for (i = 0, j = c; i < len; i++, j += channels) + dst[j] = src[c][i]; + } +} + av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx) { c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_c; c->float_to_int16 = float_to_int16_c; c->float_to_int16_interleave = float_to_int16_interleave_c; + c->float_interleave = ff_float_interleave_c; if (ARCH_ARM) ff_fmt_convert_init_arm(c, avctx); if (HAVE_ALTIVEC) ff_fmt_convert_init_altivec(c, avctx); |
