From e8d004170191b9d86bd7089e3e19d43ab1bd815c Mon Sep 17 00:00:00 2001 From: David Bateman Date: Fri, 6 Apr 2007 09:59:55 +0000 Subject: [PATCH] IWMMXT-specific dsputils clear_blocks function. patch by David Bateman, adb014 gmail com Originally committed as revision 8632 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/armv4l/dsputil_iwmmxt.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/libavcodec/armv4l/dsputil_iwmmxt.c b/libavcodec/armv4l/dsputil_iwmmxt.c index 7536100ee7..7b28db5bb5 100644 --- a/libavcodec/armv4l/dsputil_iwmmxt.c +++ b/libavcodec/armv4l/dsputil_iwmmxt.c @@ -123,6 +123,25 @@ void add_pixels_clamped_iwmmxt(const DCTELEM *block, uint8_t *pixels, int line_s : "cc", "memory", "r12"); } +static void clear_blocks_iwmmxt(DCTELEM *blocks) +{ + __asm __volatile( + "wzero wr0 \n\t" + "mov r1, #(128 * 6 / 32) \n\t" + "1: \n\t" + "wstrd wr0, [%0] \n\t" + "wstrd wr0, [%0, #8] \n\t" + "wstrd wr0, [%0, #16] \n\t" + "wstrd wr0, [%0, #24] \n\t" + "subs r1, r1, #1 \n\t" + "add %0, %0, #32 \n\t" + "bne 1b \n\t" + : "+r"(blocks) + : + : "r1" + ); +} + static void nop(uint8_t *block, const uint8_t *pixels, int line_size, int h) { return; @@ -146,6 +165,8 @@ void dsputil_init_iwmmxt(DSPContext* c, AVCodecContext *avctx) c->add_pixels_clamped = add_pixels_clamped_iwmmxt; + c->clear_blocks = clear_blocks_iwmmxt; + c->put_pixels_tab[0][0] = put_pixels16_iwmmxt; c->put_pixels_tab[0][1] = put_pixels16_x2_iwmmxt; c->put_pixels_tab[0][2] = put_pixels16_y2_iwmmxt;