[Dark Shikari]

Originally Posted by Miles Teg

The PowerPC G4 don't have SSE unit, and I don't think the H264 decoder is optimized for Altivec

if (has_altivec()) {
        c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;
        c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;
        c->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_altivec;
        c->avg_no_rnd_vc1_chroma_pixels_tab[0] = avg_no_rnd_vc1_chroma_mc8_altivec;
        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;
        c->h264_idct_add16intra = ff_h264_idct_add16intra_altivec;
        c->h264_idct_dc_add= h264_idct_dc_add_altivec;
        c->h264_idct8_dc_add = ff_h264_idct8_dc_add_altivec;
        c->h264_idct8_add = ff_h264_idct8_add_altivec;
        c->h264_idct8_add4 = ff_h264_idct8_add4_altivec;
        c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;
        c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;

#define dspfunc(PFX, IDX, NUM) \
        c->PFX ## _pixels_tab[IDX][ 0] = PFX ## NUM ## _mc00_altivec; \
        c->PFX ## _pixels_tab[IDX][ 1] = PFX ## NUM ## _mc10_altivec; \
        c->PFX ## _pixels_tab[IDX][ 2] = PFX ## NUM ## _mc20_altivec; \
        c->PFX ## _pixels_tab[IDX][ 3] = PFX ## NUM ## _mc30_altivec; \
        c->PFX ## _pixels_tab[IDX][ 4] = PFX ## NUM ## _mc01_altivec; \
        c->PFX ## _pixels_tab[IDX][ 5] = PFX ## NUM ## _mc11_altivec; \
        c->PFX ## _pixels_tab[IDX][ 6] = PFX ## NUM ## _mc21_altivec; \
        c->PFX ## _pixels_tab[IDX][ 7] = PFX ## NUM ## _mc31_altivec; \
        c->PFX ## _pixels_tab[IDX][ 8] = PFX ## NUM ## _mc02_altivec; \
        c->PFX ## _pixels_tab[IDX][ 9] = PFX ## NUM ## _mc12_altivec; \
        c->PFX ## _pixels_tab[IDX][10] = PFX ## NUM ## _mc22_altivec; \
        c->PFX ## _pixels_tab[IDX][11] = PFX ## NUM ## _mc32_altivec; \
        c->PFX ## _pixels_tab[IDX][12] = PFX ## NUM ## _mc03_altivec; \
        c->PFX ## _pixels_tab[IDX][13] = PFX ## NUM ## _mc13_altivec; \
        c->PFX ## _pixels_tab[IDX][14] = PFX ## NUM ## _mc23_altivec; \
        c->PFX ## _pixels_tab[IDX][15] = PFX ## NUM ## _mc33_altivec

        dspfunc(put_h264_qpel, 0, 16);
        dspfunc(avg_h264_qpel, 0, 16);
#undef dspfunc

        c->weight_h264_pixels_tab[0] = ff_weight_h264_pixels16x16_altivec;
        c->weight_h264_pixels_tab[1] = ff_weight_h264_pixels16x8_altivec;
        c->weight_h264_pixels_tab[2] = ff_weight_h264_pixels8x16_altivec;
        c->weight_h264_pixels_tab[3] = ff_weight_h264_pixels8x8_altivec;
        c->weight_h264_pixels_tab[4] = ff_weight_h264_pixels8x4_altivec;
        c->biweight_h264_pixels_tab[0] = ff_biweight_h264_pixels16x16_altivec;
        c->biweight_h264_pixels_tab[1] = ff_biweight_h264_pixels16x8_altivec;
        c->biweight_h264_pixels_tab[2] = ff_biweight_h264_pixels8x16_altivec;
        c->biweight_h264_pixels_tab[3] = ff_biweight_h264_pixels8x8_altivec;
        c->biweight_h264_pixels_tab[4] = ff_biweight_h264_pixels8x4_altivec;
    }

Hmm, not optimized at all...