--- /dev/null
+#include <stdlib.h>
+#include <ctype.h>
+
+#include <VP_Api/vp_api.h>
+#include <VP_Api/vp_api_error.h>
+#include <VP_Stages/vp_stages_io_file.h>
+#include <VP_Os/vp_os_print.h>
+
+
+#define NB_STAGES 3
+
+
+static PIPELINE_HANDLE pipeline_handle;
+
+
+C_RESULT
+my_transform_open(void *cfg)
+{
+ return (SUCCESS);
+}
+
+C_RESULT
+my_transform_transform(void *cfg, vp_api_io_data_t *in, vp_api_io_data_t *out)
+{
+ int i;
+
+ vp_os_mutex_lock(&out->lock);
+
+ if(out->status == VP_API_STATUS_INIT)
+ {
+ out->numBuffers = 1;
+ out->size = in->size; // to be cleaned ...
+ out->buffers = (int8_t **)malloc(sizeof(int8_t *)+out->size*sizeof(int8_t));
+ out->buffers[0] = (int8_t *)(out->buffers+1);
+ out->indexBuffer = 0;
+ // out->lineSize not used
+ out->status = VP_API_STATUS_PROCESSING;
+ }
+
+ if(in->status == VP_API_STATUS_ENDED)
+ {
+ free(out->buffers);
+ }
+ else if(in->status == VP_API_STATUS_PROCESSING)
+ {
+ // uppercase
+ for(i = 0 ; i < in->size ; i++)
+ {
+ out->buffers[0][i] = toupper(in->buffers[in->indexBuffer][i]);
+ }
+ }
+
+ out->status = in->status;
+
+ vp_os_mutex_unlock(&out->lock);
+
+ return (SUCCESS);
+}
+
+C_RESULT
+my_transform_close(void *cfg)
+{
+ return (SUCCESS);
+}
+
+
+const vp_api_stage_funcs_t my_transform_funcs =
+{
+ NULL,
+ (vp_api_stage_open_t)my_transform_open,
+ (vp_api_stage_transform_t)my_transform_transform,
+ (vp_api_stage_close_t)my_transform_close
+};
+
+
+int
+main(int argc, char **argv)
+{
+ vp_api_io_pipeline_t pipeline;
+ vp_api_io_data_t out;
+ vp_api_io_stage_t stages[NB_STAGES];
+
+ vp_stages_input_file_config_t ifc;
+ vp_stages_output_file_config_t ofc;
+
+ ifc.name = "toto.in";
+ ifc.buffer_size = 512;
+
+ ofc.name = "toto.out";
+
+ stages[0].type = VP_API_INPUT_FILE;
+ stages[0].cfg = (void *)&ifc;
+ stages[0].funcs = vp_stages_input_file_funcs;
+
+ stages[1].type = VP_API_FILTER_ENCODER;
+ stages[1].cfg = NULL;
+ stages[1].funcs = my_transform_funcs;
+
+ stages[2].type = VP_API_OUTPUT_FILE;
+ stages[2].cfg = (void *)&ofc;
+ stages[2].funcs = vp_stages_output_file_funcs;
+
+ pipeline.nb_stages = NB_STAGES;
+ pipeline.stages = &stages[0];
+
+ vp_api_open(&pipeline, &pipeline_handle);
+
+ out.status = VP_API_STATUS_PROCESSING;
+ while(SUCCEED(vp_api_run(&pipeline, &out)) && (out.status == VP_API_STATUS_PROCESSING || out.status == VP_API_STATUS_STILL_RUNNING));
+
+ // \todo tests
+
+ vp_api_close(&pipeline, &pipeline_handle);
+ return EXIT_SUCCESS;
+}