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author | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
commit | d9bb1510bee7d9bf2a0f2699c647a65e67ab9cf8 (patch) | |
tree | a23a17e9a6b51b90db0a8fa1f15423f488814866 /jdmerge.c | |
parent | c6a7fc661d57f86ac08cd637abc881cbe687b11a (diff) | |
download | jpeg-d9bb1510bee7d9bf2a0f2699c647a65e67ab9cf8.tar.gz |
Initial Contributionandroid-1.0release-1.0cdma-import
Diffstat (limited to 'jdmerge.c')
-rw-r--r-- | jdmerge.c | 397 |
1 files changed, 377 insertions, 20 deletions
@@ -38,6 +38,24 @@ #ifdef UPSAMPLE_MERGING_SUPPORTED +#ifdef ANDROID_RGB + +/* Declarations for ordered dithering. + * + * We use 4x4 ordered dither array packed into 32 bits. This array is + * sufficent for dithering RGB_888 to RGB_565. + */ + +#define DITHER_MASK 0x3 +#define DITHER_ROTATE(x) (((x)<<24) | (((x)>>8)&0x00FFFFFF)) +static const INT32 dither_matrix[4] = { + 0x0008020A, + 0x0C040E06, + 0x030B0109, + 0x0F070D05 +}; + +#endif /* Private subobject */ @@ -154,8 +172,14 @@ merged_2v_upsample (j_decompress_ptr cinfo, if (upsample->spare_full) { /* If we have a spare row saved from a previous cycle, just return it. */ + JDIMENSION size = upsample->out_row_width; +#ifdef ANDROID_RGB + if (cinfo->out_color_space == JCS_RGB_565) + size = cinfo->output_width*2; +#endif jcopy_sample_rows(& upsample->spare_row, 0, output_buf + *out_row_ctr, 0, - 1, upsample->out_row_width); + 1, size); + num_rows = 1; upsample->spare_full = FALSE; } else { @@ -255,14 +279,14 @@ h2v1_merged_upsample (j_decompress_ptr cinfo, cblue = Cbbtab[cb]; /* Fetch 2 Y values and emit 2 pixels */ y = GETJSAMPLE(*inptr0++); - outptr[RGB_RED] = range_limit[y + cred]; + outptr[RGB_RED] = range_limit[y + cred]; outptr[RGB_GREEN] = range_limit[y + cgreen]; - outptr[RGB_BLUE] = range_limit[y + cblue]; + outptr[RGB_BLUE] = range_limit[y + cblue]; outptr += RGB_PIXELSIZE; y = GETJSAMPLE(*inptr0++); - outptr[RGB_RED] = range_limit[y + cred]; + outptr[RGB_RED] = range_limit[y + cred]; outptr[RGB_GREEN] = range_limit[y + cgreen]; - outptr[RGB_BLUE] = range_limit[y + cblue]; + outptr[RGB_BLUE] = range_limit[y + cblue]; outptr += RGB_PIXELSIZE; } /* If image width is odd, do the last output column separately */ @@ -273,13 +297,148 @@ h2v1_merged_upsample (j_decompress_ptr cinfo, cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); cblue = Cbbtab[cb]; y = GETJSAMPLE(*inptr0); - outptr[RGB_RED] = range_limit[y + cred]; + outptr[RGB_RED] = range_limit[y + cred]; outptr[RGB_GREEN] = range_limit[y + cgreen]; - outptr[RGB_BLUE] = range_limit[y + cblue]; + outptr[RGB_BLUE] = range_limit[y + cblue]; + } +} + + +#ifdef ANDROID_RGB +METHODDEF(void) +h2v1_merged_upsample_565 (j_decompress_ptr cinfo, + JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, + JSAMPARRAY output_buf) +{ + my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; + register int y, cred, cgreen, cblue; + int cb, cr; + register JSAMPROW outptr; + JSAMPROW inptr0, inptr1, inptr2; + JDIMENSION col; + /* copy these pointers into registers if possible */ + register JSAMPLE * range_limit = cinfo->sample_range_limit; + int * Crrtab = upsample->Cr_r_tab; + int * Cbbtab = upsample->Cb_b_tab; + INT32 * Crgtab = upsample->Cr_g_tab; + INT32 * Cbgtab = upsample->Cb_g_tab; + unsigned int r, g, b; + INT32 rgb; + SHIFT_TEMPS + + inptr0 = input_buf[0][in_row_group_ctr]; + inptr1 = input_buf[1][in_row_group_ctr]; + inptr2 = input_buf[2][in_row_group_ctr]; + outptr = output_buf[0]; + /* Loop for each pair of output pixels */ + for (col = cinfo->output_width >> 1; col > 0; col--) { + /* Do the chroma part of the calculation */ + cb = GETJSAMPLE(*inptr1++); + cr = GETJSAMPLE(*inptr2++); + cred = Crrtab[cr]; + cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); + cblue = Cbbtab[cb]; + /* Fetch 2 Y values and emit 2 pixels */ + y = GETJSAMPLE(*inptr0++); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_SHORT_565(r,g,b); + y = GETJSAMPLE(*inptr0++); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); + WRITE_TWO_PIXELS(outptr, rgb); + outptr += 4; + } + /* If image width is odd, do the last output column separately */ + if (cinfo->output_width & 1) { + cb = GETJSAMPLE(*inptr1); + cr = GETJSAMPLE(*inptr2); + cred = Crrtab[cr]; + cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); + cblue = Cbbtab[cb]; + y = GETJSAMPLE(*inptr0); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_SHORT_565(r,g,b); + *(INT16*)outptr = rgb; } } +METHODDEF(void) +h2v1_merged_upsample_565D (j_decompress_ptr cinfo, + JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, + JSAMPARRAY output_buf) +{ + my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; + register int y, cred, cgreen, cblue; + int cb, cr; + register JSAMPROW outptr; + JSAMPROW inptr0, inptr1, inptr2; + JDIMENSION col; + /* copy these pointers into registers if possible */ + register JSAMPLE * range_limit = cinfo->sample_range_limit; + int * Crrtab = upsample->Cr_r_tab; + int * Cbbtab = upsample->Cb_b_tab; + INT32 * Crgtab = upsample->Cr_g_tab; + INT32 * Cbgtab = upsample->Cb_g_tab; + JDIMENSION col_index = 0; + INT32 d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; + unsigned int r, g, b; + INT32 rgb; + SHIFT_TEMPS + + inptr0 = input_buf[0][in_row_group_ctr]; + inptr1 = input_buf[1][in_row_group_ctr]; + inptr2 = input_buf[2][in_row_group_ctr]; + outptr = output_buf[0]; + /* Loop for each pair of output pixels */ + for (col = cinfo->output_width >> 1; col > 0; col--) { + /* Do the chroma part of the calculation */ + cb = GETJSAMPLE(*inptr1++); + cr = GETJSAMPLE(*inptr2++); + cred = Crrtab[cr]; + cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); + cblue = Cbbtab[cb]; + /* Fetch 2 Y values and emit 2 pixels */ + y = GETJSAMPLE(*inptr0++); + r = range_limit[DITHER_565_R(y + cred, d0)]; + g = range_limit[DITHER_565_G(y + cgreen, d0)]; + b = range_limit[DITHER_565_B(y + cblue, d0)]; + d0 = DITHER_ROTATE(d0); + rgb = PACK_SHORT_565(r,g,b); + y = GETJSAMPLE(*inptr0++); + r = range_limit[DITHER_565_R(y + cred, d0)]; + g = range_limit[DITHER_565_G(y + cgreen, d0)]; + b = range_limit[DITHER_565_B(y + cblue, d0)]; + d0 = DITHER_ROTATE(d0); + rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); + WRITE_TWO_PIXELS(outptr, rgb); + outptr += 4; + } + /* If image width is odd, do the last output column separately */ + if (cinfo->output_width & 1) { + cb = GETJSAMPLE(*inptr1); + cr = GETJSAMPLE(*inptr2); + cred = Crrtab[cr]; + cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); + cblue = Cbbtab[cb]; + y = GETJSAMPLE(*inptr0); + r = range_limit[DITHER_565_R(y + cred, d0)]; + g = range_limit[DITHER_565_G(y + cgreen, d0)]; + b = range_limit[DITHER_565_B(y + cblue, d0)]; + rgb = PACK_SHORT_565(r,g,b); + *(INT16*)outptr = rgb; + } +} + + +#endif + /* * Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical. */ @@ -319,24 +478,24 @@ h2v2_merged_upsample (j_decompress_ptr cinfo, cblue = Cbbtab[cb]; /* Fetch 4 Y values and emit 4 pixels */ y = GETJSAMPLE(*inptr00++); - outptr0[RGB_RED] = range_limit[y + cred]; + outptr0[RGB_RED] = range_limit[y + cred]; outptr0[RGB_GREEN] = range_limit[y + cgreen]; - outptr0[RGB_BLUE] = range_limit[y + cblue]; + outptr0[RGB_BLUE] = range_limit[y + cblue]; outptr0 += RGB_PIXELSIZE; y = GETJSAMPLE(*inptr00++); - outptr0[RGB_RED] = range_limit[y + cred]; + outptr0[RGB_RED] = range_limit[y + cred]; outptr0[RGB_GREEN] = range_limit[y + cgreen]; - outptr0[RGB_BLUE] = range_limit[y + cblue]; + outptr0[RGB_BLUE] = range_limit[y + cblue]; outptr0 += RGB_PIXELSIZE; y = GETJSAMPLE(*inptr01++); - outptr1[RGB_RED] = range_limit[y + cred]; + outptr1[RGB_RED] = range_limit[y + cred]; outptr1[RGB_GREEN] = range_limit[y + cgreen]; - outptr1[RGB_BLUE] = range_limit[y + cblue]; + outptr1[RGB_BLUE] = range_limit[y + cblue]; outptr1 += RGB_PIXELSIZE; y = GETJSAMPLE(*inptr01++); - outptr1[RGB_RED] = range_limit[y + cred]; + outptr1[RGB_RED] = range_limit[y + cred]; outptr1[RGB_GREEN] = range_limit[y + cgreen]; - outptr1[RGB_BLUE] = range_limit[y + cblue]; + outptr1[RGB_BLUE] = range_limit[y + cblue]; outptr1 += RGB_PIXELSIZE; } /* If image width is odd, do the last output column separately */ @@ -347,17 +506,197 @@ h2v2_merged_upsample (j_decompress_ptr cinfo, cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); cblue = Cbbtab[cb]; y = GETJSAMPLE(*inptr00); - outptr0[RGB_RED] = range_limit[y + cred]; + outptr0[RGB_RED] = range_limit[y + cred]; outptr0[RGB_GREEN] = range_limit[y + cgreen]; - outptr0[RGB_BLUE] = range_limit[y + cblue]; + outptr0[RGB_BLUE] = range_limit[y + cblue]; y = GETJSAMPLE(*inptr01); - outptr1[RGB_RED] = range_limit[y + cred]; + outptr1[RGB_RED] = range_limit[y + cred]; outptr1[RGB_GREEN] = range_limit[y + cgreen]; - outptr1[RGB_BLUE] = range_limit[y + cblue]; + outptr1[RGB_BLUE] = range_limit[y + cblue]; + } +} + + +#ifdef ANDROID_RGB + +METHODDEF(void) +h2v2_merged_upsample_565 (j_decompress_ptr cinfo, + JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, + JSAMPARRAY output_buf) +{ + my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; + register int y, cred, cgreen, cblue; + int cb, cr; + register JSAMPROW outptr0, outptr1; + JSAMPROW inptr00, inptr01, inptr1, inptr2; + JDIMENSION col; + /* copy these pointers into registers if possible */ + register JSAMPLE * range_limit = cinfo->sample_range_limit; + int * Crrtab = upsample->Cr_r_tab; + int * Cbbtab = upsample->Cb_b_tab; + INT32 * Crgtab = upsample->Cr_g_tab; + INT32 * Cbgtab = upsample->Cb_g_tab; + unsigned int r, g, b; + INT32 rgb; + SHIFT_TEMPS + + inptr00 = input_buf[0][in_row_group_ctr*2]; + inptr01 = input_buf[0][in_row_group_ctr*2 + 1]; + inptr1 = input_buf[1][in_row_group_ctr]; + inptr2 = input_buf[2][in_row_group_ctr]; + outptr0 = output_buf[0]; + outptr1 = output_buf[1]; + /* Loop for each group of output pixels */ + for (col = cinfo->output_width >> 1; col > 0; col--) { + /* Do the chroma part of the calculation */ + cb = GETJSAMPLE(*inptr1++); + cr = GETJSAMPLE(*inptr2++); + cred = Crrtab[cr]; + cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); + cblue = Cbbtab[cb]; + /* Fetch 4 Y values and emit 4 pixels */ + y = GETJSAMPLE(*inptr00++); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_SHORT_565(r,g,b); + y = GETJSAMPLE(*inptr00++); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); + WRITE_TWO_PIXELS(outptr0, rgb); + outptr0 += 4; + y = GETJSAMPLE(*inptr01++); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_SHORT_565(r,g,b); + y = GETJSAMPLE(*inptr01++); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); + WRITE_TWO_PIXELS(outptr1, rgb); + outptr1 += 4; + } + /* If image width is odd, do the last output column separately */ + if (cinfo->output_width & 1) { + cb = GETJSAMPLE(*inptr1); + cr = GETJSAMPLE(*inptr2); + cred = Crrtab[cr]; + cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); + cblue = Cbbtab[cb]; + y = GETJSAMPLE(*inptr00); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_SHORT_565(r,g,b); + *(INT16*)outptr0 = rgb; + y = GETJSAMPLE(*inptr01); + r = range_limit[y + cred]; + g = range_limit[y + cgreen]; + b = range_limit[y + cblue]; + rgb = PACK_SHORT_565(r,g,b); + *(INT16*)outptr1 = rgb; } } + +METHODDEF(void) +h2v2_merged_upsample_565D (j_decompress_ptr cinfo, + JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, + JSAMPARRAY output_buf) +{ + my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; + register int y, cred, cgreen, cblue; + int cb, cr; + register JSAMPROW outptr0, outptr1; + JSAMPROW inptr00, inptr01, inptr1, inptr2; + JDIMENSION col; + /* copy these pointers into registers if possible */ + register JSAMPLE * range_limit = cinfo->sample_range_limit; + int * Crrtab = upsample->Cr_r_tab; + int * Cbbtab = upsample->Cb_b_tab; + INT32 * Crgtab = upsample->Cr_g_tab; + INT32 * Cbgtab = upsample->Cb_g_tab; + JDIMENSION col_index = 0; + INT32 d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; + INT32 d1 = dither_matrix[(cinfo->output_scanline+1) & DITHER_MASK]; + unsigned int r, g, b; + INT32 rgb; + SHIFT_TEMPS + + inptr00 = input_buf[0][in_row_group_ctr*2]; + inptr01 = input_buf[0][in_row_group_ctr*2 + 1]; + inptr1 = input_buf[1][in_row_group_ctr]; + inptr2 = input_buf[2][in_row_group_ctr]; + outptr0 = output_buf[0]; + outptr1 = output_buf[1]; + /* Loop for each group of output pixels */ + for (col = cinfo->output_width >> 1; col > 0; col--) { + + /* Do the chroma part of the calculation */ + cb = GETJSAMPLE(*inptr1++); + cr = GETJSAMPLE(*inptr2++); + cred = Crrtab[cr]; + cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); + cblue = Cbbtab[cb]; + /* Fetch 4 Y values and emit 4 pixels */ + y = GETJSAMPLE(*inptr00++); + r = range_limit[DITHER_565_R(y + cred, d0)]; + g = range_limit[DITHER_565_G(y + cgreen, d0)]; + b = range_limit[DITHER_565_B(y + cblue, d0)]; + d0 = DITHER_ROTATE(d0); + rgb = PACK_SHORT_565(r,g,b); + y = GETJSAMPLE(*inptr00++); + r = range_limit[DITHER_565_R(y + cred, d1)]; + g = range_limit[DITHER_565_G(y + cgreen, d1)]; + b = range_limit[DITHER_565_B(y + cblue, d1)]; + d1 = DITHER_ROTATE(d1); + rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); + WRITE_TWO_PIXELS(outptr0, rgb); + outptr0 += 4; + y = GETJSAMPLE(*inptr01++); + r = range_limit[DITHER_565_R(y + cred, d0)]; + g = range_limit[DITHER_565_G(y + cgreen, d0)]; + b = range_limit[DITHER_565_B(y + cblue, d0)]; + d0 = DITHER_ROTATE(d0); + rgb = PACK_SHORT_565(r,g,b); + y = GETJSAMPLE(*inptr01++); + r = range_limit[DITHER_565_R(y + cred, d1)]; + g = range_limit[DITHER_565_G(y + cgreen, d1)]; + b = range_limit[DITHER_565_B(y + cblue, d1)]; + d1 = DITHER_ROTATE(d1); + rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); + WRITE_TWO_PIXELS(outptr1, rgb); + outptr1 += 4; + } + /* If image width is odd, do the last output column separately */ + if (cinfo->output_width & 1) { + cb = GETJSAMPLE(*inptr1); + cr = GETJSAMPLE(*inptr2); + cred = Crrtab[cr]; + cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); + cblue = Cbbtab[cb]; + y = GETJSAMPLE(*inptr00); + r = range_limit[DITHER_565_R(y + cred, d0)]; + g = range_limit[DITHER_565_G(y + cgreen, d0)]; + b = range_limit[DITHER_565_B(y + cblue, d0)]; + rgb = PACK_SHORT_565(r,g,b); + *(INT16*)outptr0 = rgb; + y = GETJSAMPLE(*inptr01); + r = range_limit[DITHER_565_R(y + cred, d1)]; + g = range_limit[DITHER_565_G(y + cgreen, d1)]; + b = range_limit[DITHER_565_B(y + cblue, d1)]; + rgb = PACK_SHORT_565(r,g,b); + *(INT16*)outptr1 = rgb; + } +} + +#endif + /* * Module initialization routine for merged upsampling/color conversion. * @@ -379,10 +718,19 @@ jinit_merged_upsampler (j_decompress_ptr cinfo) upsample->pub.need_context_rows = FALSE; upsample->out_row_width = cinfo->output_width * cinfo->out_color_components; - + if (cinfo->max_v_samp_factor == 2) { upsample->pub.upsample = merged_2v_upsample; upsample->upmethod = h2v2_merged_upsample; +#ifdef ANDROID_RGB + if (cinfo->out_color_space == JCS_RGB_565) { + if (cinfo->dither_mode == JDITHER_NONE) { + upsample->upmethod = h2v2_merged_upsample_565; + } else { + upsample->upmethod = h2v2_merged_upsample_565D; + } + } +#endif /* Allocate a spare row buffer */ upsample->spare_row = (JSAMPROW) (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, @@ -390,6 +738,15 @@ jinit_merged_upsampler (j_decompress_ptr cinfo) } else { upsample->pub.upsample = merged_1v_upsample; upsample->upmethod = h2v1_merged_upsample; +#ifdef ANDROID_RGB + if (cinfo->out_color_space == JCS_RGB_565) { + if (cinfo->dither_mode == JDITHER_NONE) { + upsample->upmethod = h2v1_merged_upsample_565; + } else { + upsample->upmethod = h2v1_merged_upsample_565D; + } + } +#endif /* No spare row needed */ upsample->spare_row = NULL; } |