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

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>

1 files changed, 6 insertions, 1 deletions

diff --git a/libavcodec/ppc/h264_altivec.c b/libavcodec/ppc/h264_altivec.c
index 02699beef4..fae0674720 100644
--- a/libavcodec/ppc/h264_altivec.c
+++ b/libavcodec/ppc/h264_altivec.c
@@ -965,8 +965,10 @@ H264_WEIGHT( 8, 8)
 H264_WEIGHT( 8, 4)
 
 void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {
+    const int high_bit_depth = avctx->codec_id == CODEC_ID_H264 && avctx->bits_per_raw_sample > 8;
 
     if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
+    if (!high_bit_depth) {
         c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;
         c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;
 
@@ -992,11 +994,13 @@ void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {
         dspfunc(avg_h264_qpel, 0, 16);
 #undef dspfunc
     }
+    }
 }
 
-void ff_h264dsp_init_ppc(H264DSPContext *c)
+void ff_h264dsp_init_ppc(H264DSPContext *c, const int bit_depth)
 {
     if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
+    if (bit_depth == 8) {
         c->h264_idct_add = ff_h264_idct_add_altivec;
         c->h264_idct_add8 = ff_h264_idct_add8_altivec;
         c->h264_idct_add16 = ff_h264_idct_add16_altivec;
@@ -1019,4 +1023,5 @@ void ff_h264dsp_init_ppc(H264DSPContext *c)
         c->biweight_h264_pixels_tab[3] = ff_biweight_h264_pixels8x8_altivec;
         c->biweight_h264_pixels_tab[4] = ff_biweight_h264_pixels8x4_altivec;
     }
+    }
 }