diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2024-06-28 23:59:30 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2024-07-01 10:53:06 +0300 |
| commit | e3310749f5abb8003c85f7bdf01ce14b9e4b1fab (patch) | |
| tree | 7cb87fd4f540defb4c969360404b2f00e590a022 /src | |
| parent | 7735d65ce81db570570dc21bb6056da8abd2ae22 (diff) | |
apps: common: dng_writer: Fix RAW10 and RAW12 packing on BE machines
The 16-bit padded raw 10 and raw 12 formats are stored in memory in
little endian order, regardless of the machine's endianness. Read pixel
data as uint8_t values and hardcode bit shifting to little endian to fix
scanline packing.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/apps/common/dng_writer.cpp | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/src/apps/common/dng_writer.cpp b/src/apps/common/dng_writer.cpp index 50db5eb3..355433b0 100644 --- a/src/apps/common/dng_writer.cpp +++ b/src/apps/common/dng_writer.cpp @@ -139,29 +139,29 @@ void packScanlineRaw8(void *output, const void *input, unsigned int width) void packScanlineRaw10(void *output, const void *input, unsigned int width) { - const uint16_t *in = static_cast<const uint16_t *>(input); + const uint8_t *in = static_cast<const uint8_t *>(input); uint8_t *out = static_cast<uint8_t *>(output); for (unsigned int i = 0; i < width; i += 4) { - *out++ = (in[0] & 0x3fc) >> 2; - *out++ = (in[0] & 0x003) << 6 | (in[1] & 0x3f0) >> 4; - *out++ = (in[1] & 0x00f) << 4 | (in[2] & 0x3c0) >> 6; - *out++ = (in[2] & 0x03f) << 2 | (in[3] & 0x300) >> 8; - *out++ = (in[3] & 0x0ff); - in += 4; + *out++ = in[1] << 6 | in[0] >> 2; + *out++ = in[0] << 6 | (in[3] & 0x03) << 4 | in[2] >> 4; + *out++ = in[2] << 4 | (in[5] & 0x03) << 2 | in[4] >> 6; + *out++ = in[4] << 2 | (in[7] & 0x03) << 0; + *out++ = in[6]; + in += 8; } } void packScanlineRaw12(void *output, const void *input, unsigned int width) { - const uint16_t *in = static_cast<const uint16_t *>(input); + const uint8_t *in = static_cast<const uint8_t *>(input); uint8_t *out = static_cast<uint8_t *>(output); for (unsigned int i = 0; i < width; i += 2) { - *out++ = (in[0] & 0xff0) >> 4; - *out++ = (in[0] & 0x00f) << 4 | (in[1] & 0xf00) >> 8; - *out++ = (in[1] & 0x0ff); - in += 2; + *out++ = in[1] << 4 | in[0] >> 4; + *out++ = in[0] << 4 | (in[3] & 0x0f); + *out++ = in[2]; + in += 4; } } |