

BOOL SSP_ConvertJpegEncodeData(const void* src, u8 *wrk, u32 width, u32 height, u32 sampling, u32 option);
| src | Image data to encode (RGB555 or YUV422). Must be 4-byte aligned. |
| wrk | Working buffer. This must be 4-byte aligned. You can use the SSP_GetJpegEncoderBufferSize function to calculate the required size. |
| width | Width (in pixels) of the image to encode. |
| height | Height (in pixels) of the image to encode. |
| sampling | Main image output format (SSP_JPEG_OUTPUT_YUV444, SSP_JPEG_OUTPUT_YUV420, or SSP_JPEG_OUTPUT_YUV422) to use at time of encoding. |
| option | Encoding options (SSP_JPEG_RGB555, SSP_JPEG_YUV422, or SSP_JPEG_THUMBNAIL). |
TRUE if successful.
Converts image data into a format used for encoding in a JPEG file.
RGB555 and YUV422 formats can be used for the image data to be encoded. When you specify YUV422 image data as src, you must specify SSP_JPEG_YUV422 in option. If you want to encode a thumbnail icon, you must specify SSP_JPEG_THUMBNAIL in option.
Therefore, to encode a YUV422 image along with a thumbnail icon, you must specify SSP_JPEG_YUV422|SSP_JPEG_THUMBNAIL in option.
The height and width of an image that can be encoded differs depending on the value of sampling.
If SSP_JPEG_OUTPUT_YUV444 is specified, both the height and width of the image must be a multiple of 8.
If SSP_JPEG_OUTPUT_YUV420 is specified, both the height and width of the image must be a multiple of 16.
If SSP_JPEG_OUTPUT_YUV422 is specified, the height must be a multiple of 8, and the width a multiple of 16.
Because actual encoding is performed using the SSP_StartJpegEncoderWithEncodeData function, src, which represents input source data, can be destroyed without problem upon termination of this function.
SSP_StartJpegEncoderWithEncodeData
SSP_GetJpegEncoderBufferSize
2009/04/28 Added information on alignment restrictions.
2008/11/14 Initial version.
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