diff --git a/internal/cgen/base/pixconv-submodule.c b/internal/cgen/base/pixconv-submodule.c
index f3bdb2a..4cab2d4 100644
--- a/internal/cgen/base/pixconv-submodule.c
+++ b/internal/cgen/base/pixconv-submodule.c
@@ -4220,7 +4220,6 @@
     case WUFFS_BASE__PIXEL_FORMAT__BGR:
     case WUFFS_BASE__PIXEL_FORMAT__RGB:
       return wuffs_base__pixel_swizzler__xxx__y_16be;
-      break;
 
     case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
     case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
diff --git a/internal/cgen/data/data.go b/internal/cgen/data/data.go
index c81bc06..162eb44 100644
--- a/internal/cgen/data/data.go
+++ b/internal/cgen/data/data.go
@@ -721,39 +721,39 @@
 	"" +
 	"// --------\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__y(wuffs_base__pixel_swizzler* p,\n                                       wuffs_base__pixel_format dst_pixfmt,\n                                       wuffs_base__slice_u8 dst_palette,\n                                       wuffs_base__slice_u8 src_palette,\n                                       wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__Y:\n      return wuffs_base__pixel_swizzler__copy_1_1;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__y;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      return wuffs_base__pixel_swizzler__xxx__y;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BA" +
 	"SE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n      if (wuffs_base__cpu_arch__have_x86_sse42()) {\n        return wuffs_base__pixel_swizzler__xxxx__y__sse42;\n      }\n#endif\n      return wuffs_base__pixel_swizzler__xxxx__y;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__xxxxxxxx__y;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__y_16be(wuffs_base__pixel_swizzler* p,\n                                            wuffs_base__pixel_format dst_pixfmt,\n                                            wuffs_base__slice_u8 dst_palette,\n                                            wuffs_base__slice_u8 src_palette,\n                           " +
-	"                 wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__Y:\n      return wuffs_base__pixel_swizzler__y__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:\n      return wuffs_base__pixel_swizzler__y_16le__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:\n      return wuffs_base__pixel_swizzler__copy_2_2;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      return wuffs_base__pixel_swizzler__xxx__y_16be;\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      return wuffs_base__pixel_" +
-	"swizzler__xxxx__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__xxxxxxxx__y_16be;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_1_1;\n      }\n     " +
-	" return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(\n                  dst_palette.ptr, dst_palette.len, src_palette.ptr,\n                  src_palette.len, true) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__bgr_565__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(\n " +
-	"                 dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n                  src_palette.len) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__xxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL" +
-	"_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxxxxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(\n                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n                  src_palette.len) !=\n              (WUFFS_BASE__PIXEL_FORMA" +
-	"T__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(\n              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n              src_palette.len) !=\n          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case W" +
-	"UFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(\n                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n                  src_palette.len) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(\n                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n                  src_palette.len) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__bgr" +
-	"a_premul__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      // TODO.\n      break;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_1_1;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n " +
-	"     if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(\n              dst_palette.ptr, dst_palette.len, src_palette.ptr,\n              src_palette.len, false) !=\n          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxx__index_binary_alpha" +
-	"__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_b" +
-	"ase__pixel_swizzler__xxxxxxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(\n              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n              src_palette.len) !=\n          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(\n              dst_palette.ptr," +
-	" dst_palette.len, NULL, 0, src_palette.ptr,\n              src_palette.len) !=\n          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;\n      }\n      return NULL;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgr_565(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__copy_2_2;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      return wuffs_base__pixel_swizzler__bgr__bgr_565;\n\n    case WUFFS_BASE__PIXEL_FORMAT__B" +
-	"GRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      return wuffs_base__pixel_swizzler__bgrw__bgr_565;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      return wuffs_base__pixel_swizzler__rgbw__bgr_565;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgr(wuffs_base__pixel_swizzler* p,\n                                         wuffs_base__pixel_format dst_pixfmt,\n                                         wuffs_base__slice_u8 dst_palette,\n                                         wuffs_base__slice_u8 src_palette,\n                            " +
-	"             wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      return wuffs_base__pixel_swizzler__copy_3_3;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      return wuffs_base__pixel_swizzler__bgrw__bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      return wuffs_base__pixel_swizzler__swap_rgb_bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n      if (wuffs_b" +
-	"ase__cpu_arch__have_x86_sse42()) {\n        return wuffs_base__pixel_swizzler__bgrw__rgb__sse42;\n      }\n#endif\n      return wuffs_base__pixel_swizzler__bgrw__rgb;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgra_nonpremul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src;\n      " +
-	"  case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_4_4;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__b" +
-	"gra_premul__bgra_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n          if (wuffs_base__cpu_arch__have_x86_sse42()) {\n            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;\n          }\n#endif\n          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n  " +
-	"        return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      // TODO.\n      break;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over;" +
-	"\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_8_8;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra" +
-	"_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over;\n      }\n      break;\n\n    case WUFFS_BASE_" +
-	"_PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      // TODO.\n      break;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgra_premul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OV" +
-	"ER:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src;\n        case WUFFS_BASE__P" +
-	"IXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_4_4;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n          if (wuffs_base__cpu_arch__have_x86_" +
-	"sse42()) {\n            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;\n          }\n#endif\n          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;\n      }\n      return NULL;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgrx(wuffs_base__pixel_swizzler* p,\n                                          wuffs_base__pixel_format dst_pixfmt,\n                                          wuffs_base__slice_u8 dst_palette,\n                                          wuffs_base__slice_u8 src_palette,\n                                          wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__bgrx;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      return wuffs_base__pixel_swizzler__xxx__xxxx;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA" +
-	"_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n      return wuffs_base__pixel_swizzler__bgrw__bgrx;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      return wuffs_base__pixel_swizzler__copy_4_4;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      return wuffs_base__pixel_swizzler__bgrw__rgbx;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__rgb(wuffs_base__pixel_swizzler* p,\n                                         wuffs_base__pixel_format dst_pixfmt,\n                                         wuffs_base__slice_u8 dst_palette,\n                                         wuffs_ba" +
-	"se__slice_u8 src_palette,\n                                         wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__rgb;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      return wuffs_base__pixel_swizzler__swap_rgb_bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n      if (wuffs_base__cpu_arch__have_x86_sse42()) {\n        return wuffs_base__pixel_swizzler__bgrw__rgb__sse42;\n      }\n#endif\n      return wuffs_base__pixel_swizzler__bgrw__rgb;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__bgrw_4x16le__rgb;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      return wuffs_base__pixel_swizzler__copy_3_3;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_" +
-	"FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      return wuffs_base__pixel_swizzler__bgrw__bgr;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__rgba_nonpremul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src;\n       " +
-	" case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n          if (wuffs_base__cpu_arch__have_x86_sse42()) {\n            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;\n          }\n#endif\n          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_ov" +
-	"er;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_4_4;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n   " +
-	"       return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      // TODO.\n      break;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__rgba_premul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over;\n      }\n      return NULL;\n\n  " +
-	"  case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over" +
-	";\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n          if (wuffs_base__cpu_arch__have_x86_sse42()) {\n            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;\n          }\n#endif\n          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n     " +
-	"     return wuffs_base__pixel_swizzler__copy_4_4;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;\n      }\n      return NULL;\n  }\n  return NULL;\n}\n\n" +
+	"                 wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__Y:\n      return wuffs_base__pixel_swizzler__y__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:\n      return wuffs_base__pixel_swizzler__y_16le__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:\n      return wuffs_base__pixel_swizzler__copy_2_2;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      return wuffs_base__pixel_swizzler__xxx__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      return wuffs_base__pixel_swizzler__xxx" +
+	"x__y_16be;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__xxxxxxxx__y_16be;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_1_1;\n      }\n      return NULL;" +
+	"\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(\n                  dst_palette.ptr, dst_palette.len, src_palette.ptr,\n                  src_palette.len, true) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__bgr_565__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(\n              " +
+	"    dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n                  src_palette.len) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__xxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_O" +
+	"VER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxxxxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(\n                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n                  src_palette.len) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__P" +
+	"ALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(\n              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n              src_palette.len) !=\n          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PI" +
+	"XEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(\n                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n                  src_palette.len) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(\n                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n                  src_palette.len) !=\n              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n            return NULL;\n          }\n          return wuffs_base__pixel_swizzler__bgra_premul__ind" +
+	"ex_bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      // TODO.\n      break;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_1_1;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      if (wuff" +
+	"s_base__pixel_swizzler__squash_align4_bgr_565_8888(\n              dst_palette.ptr, dst_palette.len, src_palette.ptr,\n              src_palette.len, false) !=\n          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;\n " +
+	"     }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=\n          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_sw" +
+	"izzler__xxxxxxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(\n              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,\n              src_palette.len) !=\n          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(\n              dst_palette.ptr, dst_palette." +
+	"len, NULL, 0, src_palette.ptr,\n              src_palette.len) !=\n          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {\n        return NULL;\n      }\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__xxxx__index__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;\n      }\n      return NULL;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgr_565(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__copy_2_2;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      return wuffs_base__pixel_swizzler__bgr__bgr_565;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL" +
+	":\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      return wuffs_base__pixel_swizzler__bgrw__bgr_565;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      return wuffs_base__pixel_swizzler__rgbw__bgr_565;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgr(wuffs_base__pixel_swizzler* p,\n                                         wuffs_base__pixel_format dst_pixfmt,\n                                         wuffs_base__slice_u8 dst_palette,\n                                         wuffs_base__slice_u8 src_palette,\n                                         " +
+	"wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      return wuffs_base__pixel_swizzler__copy_3_3;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      return wuffs_base__pixel_swizzler__bgrw__bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      return wuffs_base__pixel_swizzler__swap_rgb_bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n      if (wuffs_base__cpu_arch" +
+	"__have_x86_sse42()) {\n        return wuffs_base__pixel_swizzler__bgrw__rgb__sse42;\n      }\n#endif\n      return wuffs_base__pixel_swizzler__bgrw__rgb;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgra_nonpremul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src;\n        case WUFFS_" +
+	"BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_4_4;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_premul__b" +
+	"gra_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n          if (wuffs_base__cpu_arch__have_x86_sse42()) {\n            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;\n          }\n#endif\n          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          retur" +
+	"n wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      // TODO.\n      break;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over;\n      }\n    " +
+	"  return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_8_8;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x" +
+	"16le__bgra_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over;\n      }\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT" +
+	"__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      // TODO.\n      break;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgra_premul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n         " +
+	" return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__S" +
+	"RC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_4_4;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n          if (wuffs_base__cpu_arch__have_x86_sse42()) {\n  " +
+	"          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;\n          }\n#endif\n          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;\n      }\n      return NULL;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__bgrx(wuffs_base__pixel_swizzler* p,\n                                          wuffs_base__pixel_format dst_pixfmt,\n                                          wuffs_base__slice_u8 dst_palette,\n                                          wuffs_base__slice_u8 src_palette,\n                                          wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__bgrx;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      return wuffs_base__pixel_swizzler__xxx__xxxx;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n " +
+	"   case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n      return wuffs_base__pixel_swizzler__bgrw__bgrx;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      return wuffs_base__pixel_swizzler__copy_4_4;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      return wuffs_base__pixel_swizzler__bgrw__rgbx;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__rgb(wuffs_base__pixel_swizzler* p,\n                                         wuffs_base__pixel_format dst_pixfmt,\n                                         wuffs_base__slice_u8 dst_palette,\n                                         wuffs_base__slice_u8 " +
+	"src_palette,\n                                         wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      return wuffs_base__pixel_swizzler__bgr_565__rgb;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      return wuffs_base__pixel_swizzler__swap_rgb_bgr;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n      if (wuffs_base__cpu_arch__have_x86_sse42()) {\n        return wuffs_base__pixel_swizzler__bgrw__rgb__sse42;\n      }\n#endif\n      return wuffs_base__pixel_swizzler__bgrw__rgb;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      return wuffs_base__pixel_swizzler__bgrw_4x16le__rgb;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      return wuffs_base__pixel_swizzler__copy_3_3;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_" +
+	"PREMUL:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      return wuffs_base__pixel_swizzler__bgrw__bgr;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__rgba_nonpremul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src;\n        case WUFFS_B" +
+	"ASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n          if (wuffs_base__cpu_arch__have_x86_sse42()) {\n            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;\n          }\n#endif\n          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over;\n      }\n " +
+	"     return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__BGRX:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGB:\n      // TODO.\n      break;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__copy_4_4;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return" +
+	" wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:\n    case WUFFS_BASE__PIXEL_FORMAT__RGBX:\n      // TODO.\n      break;\n  }\n  return NULL;\n}\n\nstatic wuffs_base__pixel_swizzler__func  //\nwuffs_base__pixel_swizzler__prepare__rgba_premul(\n    wuffs_base__pixel_swizzler* p,\n    wuffs_base__pixel_format dst_pixfmt,\n    wuffs_base__slice_u8 dst_palette,\n    wuffs_base__slice_u8 src_palette,\n    wuffs_base__pixel_blend blend) {\n  switch (dst_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_" +
+	"BASE__PIXEL_FORMAT__BGR:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over;\n      }\n   " +
+	"   return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n#if defined(WUFFS_BASE__CPU_ARCH__X86_64)\n          if (wuffs_base__cpu_arch__have_x86_sse42()) {\n            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;\n          }\n#endif\n          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;\n      }\n      return NULL;\n\n    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:\n      switch (blend) {\n        case WUFFS_BASE__PIXEL_BLEND__SRC:\n          return w" +
+	"uffs_base__pixel_swizzler__copy_4_4;\n        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n          return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;\n      }\n      return NULL;\n  }\n  return NULL;\n}\n\n" +
 	"" +
 	"// --------\n\nWUFFS_BASE__MAYBE_STATIC wuffs_base__status  //\nwuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p,\n                                    wuffs_base__pixel_format dst_pixfmt,\n                                    wuffs_base__slice_u8 dst_palette,\n                                    wuffs_base__pixel_format src_pixfmt,\n                                    wuffs_base__slice_u8 src_palette,\n                                    wuffs_base__pixel_blend blend) {\n  if (!p) {\n    return wuffs_base__make_status(wuffs_base__error__bad_receiver);\n  }\n  p->private_impl.func = NULL;\n  p->private_impl.transparent_black_func = NULL;\n  p->private_impl.dst_pixfmt_bytes_per_pixel = 0;\n  p->private_impl.src_pixfmt_bytes_per_pixel = 0;\n\n  wuffs_base__pixel_swizzler__func func = NULL;\n  wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func =\n      NULL;\n\n  uint32_t dst_pixfmt_bits_per_pixel =\n      wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt);\n  if ((dst_pixfmt_bits_per_pixel == " +
 	"0) ||\n      ((dst_pixfmt_bits_per_pixel & 7) != 0)) {\n    return wuffs_base__make_status(\n        wuffs_base__error__unsupported_pixel_swizzler_option);\n  }\n\n  uint32_t src_pixfmt_bits_per_pixel =\n      wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt);\n  if ((src_pixfmt_bits_per_pixel == 0) ||\n      ((src_pixfmt_bits_per_pixel & 7) != 0)) {\n    return wuffs_base__make_status(\n        wuffs_base__error__unsupported_pixel_swizzler_option);\n  }\n\n  // TODO: support many more formats.\n\n  switch (blend) {\n    case WUFFS_BASE__PIXEL_BLEND__SRC:\n      transparent_black_func =\n          wuffs_base__pixel_swizzler__transparent_black_src;\n      break;\n\n    case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:\n      transparent_black_func =\n          wuffs_base__pixel_swizzler__transparent_black_src_over;\n      break;\n  }\n\n  switch (src_pixfmt.repr) {\n    case WUFFS_BASE__PIXEL_FORMAT__Y:\n      func = wuffs_base__pixel_swizzler__prepare__y(p, dst_pixfmt, dst_palette,\n                                                    src_palette" +
diff --git a/release/c/wuffs-unsupported-snapshot.c b/release/c/wuffs-unsupported-snapshot.c
index b2e8233..aeb4379 100644
--- a/release/c/wuffs-unsupported-snapshot.c
+++ b/release/c/wuffs-unsupported-snapshot.c
@@ -19337,7 +19337,6 @@
     case WUFFS_BASE__PIXEL_FORMAT__BGR:
     case WUFFS_BASE__PIXEL_FORMAT__RGB:
       return wuffs_base__pixel_swizzler__xxx__y_16be;
-      break;
 
     case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
     case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: