freeswitch/src/mod/formats/mod_native_file/mod_native_file.c

/* 
 * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 * Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
 *
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 *
 * The Initial Developer of the Original Code is
 * Anthony Minessale II <anthmct@yahoo.com>
 * Portions created by the Initial Developer are Copyright (C)
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * 
 * Anthony Minessale II <anthmct@yahoo.com>
 *
 *
 * mod_native_file.c -- Framework Demo Module
 *
 */
#include <switch.h>

static const char modname[] = "mod_native_file";

struct native_file_context {
	switch_file_t *fd;
};

typedef struct native_file_context native_file_context;

static switch_status_t native_file_file_open(switch_file_handle_t *handle, char *path)
{
	native_file_context *context;
	char *ext;
	unsigned int flags = 0;

	if ((ext = strrchr(path, '.')) == 0) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Invalid Format\n");
		return SWITCH_STATUS_GENERR;
	}
	ext++;

	if ((context = switch_core_alloc(handle->memory_pool, sizeof(*context))) == 0) {
		return SWITCH_STATUS_MEMERR;
	}

	if (switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
		flags |= SWITCH_FOPEN_WRITE | SWITCH_FOPEN_CREATE | SWITCH_FOPEN_TRUNCATE;
	}

	if (switch_test_flag(handle, SWITCH_FILE_FLAG_READ)) {
		flags |= SWITCH_FOPEN_READ;
	}

	if (switch_file_open(&context->fd, path, flags, SWITCH_FPROT_UREAD|SWITCH_FPROT_UWRITE, handle->memory_pool) != SWITCH_STATUS_SUCCESS) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error opening %s\n", path);
		return SWITCH_STATUS_GENERR;
	}



	handle->samples = 0;
	handle->samplerate = 8000;
	handle->channels = 1;
	handle->format = 0;
	handle->sections = 0;
	handle->seekable = 1;
	handle->speed = 0;
	handle->private_info = context;
	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Opening File [%s] %dhz\n", path, handle->samplerate);


	return SWITCH_STATUS_SUCCESS;
}

static switch_status_t native_file_file_close(switch_file_handle_t *handle)
{
	native_file_context *context = handle->private_info;
	
	if (context->fd) {
		switch_file_close(context->fd);
		context->fd = NULL;
	}

	return SWITCH_STATUS_SUCCESS;
}

static switch_status_t native_file_file_seek(switch_file_handle_t *handle, unsigned int *cur_sample, int64_t samples, int whence)
{
	native_file_context *context = handle->private_info;
	
	switch_file_seek(context->fd, whence, &samples);
	
	return SWITCH_STATUS_FALSE;

}

static switch_status_t native_file_file_read(switch_file_handle_t *handle, void *data, size_t *len)
{
	native_file_context *context = handle->private_info;

	return switch_file_read(context->fd, data, len);
}

static switch_status_t native_file_file_write(switch_file_handle_t *handle, void *data, size_t *len)
{
	native_file_context *context = handle->private_info;

	return switch_file_write(context->fd, data, len);
}

static switch_status_t native_file_file_set_string(switch_file_handle_t *handle, switch_audio_col_t col, const char *string)
{
	//native_file_context *context = handle->private_info;

	return SWITCH_STATUS_FALSE;
}

static switch_status_t native_file_file_get_string(switch_file_handle_t *handle, switch_audio_col_t col, const char **string)
{
	return SWITCH_STATUS_FALSE;
}

/* Registration */

static char *supported_formats[SWITCH_MAX_CODECS] = {0};

static switch_file_interface_t native_file_file_interface = {
	/*.interface_name */ modname,
	/*.file_open */ native_file_file_open,
	/*.file_close */ native_file_file_close,
	/*.file_read */ native_file_file_read,
	/*.file_write */ native_file_file_write,
	/*.file_seek */ native_file_file_seek,
	/*.file_set_string */ native_file_file_set_string,
	/*.file_get_string */ native_file_file_get_string,
	/*.extens */ NULL,
	/*.next */ NULL,
};

static switch_loadable_module_interface_t native_file_module_interface = {
	/*.module_name */ modname,
	/*.endpoint_interface */ NULL,
	/*.timer_interface */ NULL,
	/*.dialplan_interface */ NULL,
	/*.codec_interface */ NULL,
	/*.application_interface */ NULL,
	/*.api_interface */ NULL,
	/*.file_interface */ &native_file_file_interface
};



SWITCH_MOD_DECLARE(switch_status_t) switch_module_load(const switch_loadable_module_interface_t **module_interface, char *filename)
{

	const switch_codec_implementation_t *codecs[SWITCH_MAX_CODECS];
	uint32_t num_codecs = switch_loadable_module_get_codecs(NULL, codecs, sizeof(codecs) / sizeof(codecs[0]));
	uint32_t x;

	for (x = 0 ; x < num_codecs; x++) {
		supported_formats[x] = codecs[x]->iananame;
	}

	/* connect my internal structure to the blank pointer passed to me */
	native_file_file_interface.extens = supported_formats;
	*module_interface = &native_file_module_interface;

	/* indicate that the module should continue to be loaded */
	return SWITCH_STATUS_SUCCESS;
}