|
| static FRAME_TIFF_RASTER_handle * | FRAME_TIFF_RASTER_new_handle (uint8 *ps_filename) |
| | Allocate memory for the raster handle structure. More...
|
| |
| static RASTER_result | FRAME_TIFF_RASTER_start (void *pJobContext, RasterDescription *pRD, RASTER_handle *pHandle) |
| | This function is called once at the start of each sheet in each job. More...
|
| |
| static RASTER_result | FRAME_TIFF_RASTER_write_data (void *pJobContext, RASTER_handle rh, RasterDescription *pRD, void *data, int32 topline, int32 lines, int32 bytesperline, int32 channel) |
| | For each page, multiple calls are made to this function, each delivering raster data for the page. More...
|
| |
| static RASTER_result | FRAME_TIFF_RASTER_finish (void *pJobContext, RASTER_handle *pHandle, RasterDescription *pRD, RASTER_result result) |
| | This function is called once at the end of each sheet in each job. More...
|
| |
| static RASTER_result | FRAME_TIFF_RASTER_job_end (void *pJobContext, RASTER_handle *pHandle) |
| | This function is called after the last sheet has been closed. More...
|
| |
| static RASTER_result | FRAME_TIFF_RasterBandSize (void *pJobContext, RASTER_BANDSIZE *bandsize) |
| | This function allows the raster backend to increase the raster stride (byte offset between the start address of successive raster lines). More...
|
| |
| static RASTER_result | FRAME_TIFF_RasterRequirements (void *pJobContext, RASTER_REQUIREMENTS *pRasterRequirements, RasterDescription *pRD) |
| | This function gives the raster backend the details of the raster it's about to be handed. More...
|
| |
| static RASTER_result | FRAME_TIFF_RasterDestination (void *pJobContext, RASTER_DESTINATION *pRasterDestination, int32 sheetIndex) |
| | This function allows the raster backend to provide a memory address range into which to render. More...
|
| |
| static HVD_result | frame_tiff_mem_output_page (HVD_page_output *page) |
| | Callback function for libHVD to output an HVD page. More...
|
| |
| static HVD_result | frame_tiff_shm_output_page (HVD_page_output *page) |
| | Callback function for libHVD to output an HVD page. More...
|
| |
Implementation of a framebuffer output 'device'.
The main purpose of this example is to illustrate use of a handler-allocated framebuffer to receive the raster data from the RIP. It shows support for three different interleaving styles:
- use of a single framebuffer to receive pixel-interleaved raster data
- use of a framebuffer per colorant to receive frame-interleaved raster data
- use of a framebuffer per separation to receive separated raster data
A real implementation would probably pick the most appropriate of these and the RIP would always be configured to use the corresponding interleaving style, rather than support multiple interleaving styles.
The RIP could instead be configured to produce band-interleaved raster data, and a framebuffer implementation can be written to handle that if it is the most convenient format. This example does not support band-interleaved raster data.
This example also shows:
- use of the raster stride callback to constrain the RIP's data width to be a multiple of 32 bytes.
The raster handling functions piggyback on the LIBTIFF backend so that output can be easily viewed. A real implementation would probably pass the data to some other process for post-RIP manipulation.
The FRAMETIFF writer supports the same parameters for configuration as the standard TIFF writer, see libtiffrast_raster_params. When doing this the key used inside RasterParams must be /FRAMETIFF rather than /LIBTIFF.
