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| author | David Bateman <adb014@gmail.com> | 2007-04-06 09:59:55 +0000 |
|---|---|---|
| committer | Diego Biurrun <diego@biurrun.de> | 2007-04-06 09:59:55 +0000 |
| commit | e8d004170191b9d86bd7089e3e19d43ab1bd815c (patch) | |
| tree | a86a7b2f4c2b3146499066b0f2efa41e2cd76eea | |
| parent | e19fbbec9520caf4817ffb8875322ab558611a18 (diff) | |
| download | ffmpeg-e8d004170191b9d86bd7089e3e19d43ab1bd815c.tar.gz | |
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
| -rw-r--r-- | libavcodec/armv4l/dsputil_iwmmxt.c | 21 |
1 files changed, 21 insertions, 0 deletions
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; |