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Adds 8-, 9- and 10-bit versions of some of the functions used by the h264 decoder.

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This patch lets e.g. dsputil_init chose dsp functions with respect to
the bit depth to decode. The naming scheme of bit depth dependent
functions is <base name>_<bit depth>[_<prefix>] (i.e. the old
clear_blocks_c is now named clear_blocks_8_c).

Note: Some of the functions for high bit depth is not dependent on the
bit depth, but only on the pixel size. This leaves some room for
optimizing binary size.

Preparatory patch for high bit depth h264 decoding support.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Oskar Arvidsson
2011-03-29 17:48:59 +02:00
committed by Ronald S. Bultje
parent fcc0224e4f
commit 19a0729b4c
34 changed files with 752 additions and 364 deletions
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libavcodec/alpha/dsputil_alpha.c
+4
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@@ -270,6 +270,9 @@ static void put_pixels16_axp_asm(uint8_t *block, const uint8_t *pixels,
void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx)
{
const int high_bit_depth = avctx->codec_id == CODEC_ID_H264 && avctx->bits_per_raw_sample > 8;
if (!high_bit_depth) {
c->put_pixels_tab[0][0] = put_pixels16_axp_asm;
c->put_pixels_tab[0][1] = put_pixels16_x2_axp;
c->put_pixels_tab[0][2] = put_pixels16_y2_axp;
@@ -311,6 +314,7 @@ void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx)
c->avg_no_rnd_pixels_tab[1][3] = avg_no_rnd_pixels_xy2_axp;
c->clear_blocks = clear_blocks_axp;
}
/* amask clears all bits that correspond to present features. */
if (amask(AMASK_MVI) == 0) {