[FFmpeg-devel] [PATCH 1/5] libavutil: Add fixed_dsp

[Timothy Gu]

On Jan 20, 2014 6:51 AM, "Nedeljko Babic" <nedeljko.babic at imgtec.com> wrote:

> diff --git a/libavutil/fixed_dsp.h b/libavutil/fixed_dsp.h
> new file mode 100644
> index 0000000..a37d20c
> --- /dev/null
> +++ b/libavutil/fixed_dsp.h
> @@ -0,0 +1,123 @@

> +
> +typedef struct AVFixedDSPContext {
> +    /**
> +     * Overlap/add with window function.
> +     * Used primarily by MDCT-based audio codecs.
> +     * Source and destination vectors must overlap exactly or not at all.
> +     *
> +     * @param dst  result vector
> +     *             constraints: 16-byte aligned
> +     * @param src0 first source vector
> +     *             constraints: 16-byte aligned
> +     * @param src1 second source vector
> +     *             constraints: 16-byte aligned
> +     * @param win  half-window vector
> +     *             constraints: 16-byte aligned
> +     * @param len  length of vector
> +     *             constraints: multiple of 4
> +     * @param bits scaling parameter
> +     *
> +     */
> +    void (*vector_fmul_window_fixed_scaled)(int16_t *dst, const int32_t
*src0, const int32_t *src1, const int32_t *win, int len, uint8_t bits);
> +
> +    /**
> +     * Overlap/add with window function.
> +     * Used primarily by MDCT-based audio codecs.
> +     * Source and destination vectors must overlap exactly or not at all.
> +     *
> +     * @param dst  result vector
> +     *             constraints: 32-byte aligned
> +     * @param src0 first source vector
> +     *             constraints: 16-byte aligned
> +     * @param src1 second source vector
> +     *             constraints: 16-byte aligned
> +     * @param win  half-window vector
> +     *             constraints: 16-byte aligned
> +     * @param len  length of vector
> +     *             constraints: multiple of 4
> +     */
> +    void (*vector_fmul_window_fixed)(int32_t *dst, const int32_t *src0,
const int32_t *src1, const int32_t *win, int len);

These 2 function pointers documentation are the same. Is that intended?

Timothy