add switch_core_file_write_video

open a door to write video data
so it is possible to record a .fsv file
also possible to write to .mp4 with proper file format support

src/include/switch_core.h

@@ -1648,6 +1648,15 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(_In_ switch_file_handle_t
 SWITCH_DECLARE(switch_status_t) switch_core_file_write(_In_ switch_file_handle_t *fh, void *data, switch_size_t *len);
 
 /*! 
+  \brief Write media to a file handle
+  \param fh the file handle to write to
+  \param data the buffer to write
+  \param len the amount of data to write from the buffer
+  \return SWITCH_STATUS_SUCCESS with len adjusted to the bytes written if successful
+*/
+SWITCH_DECLARE(switch_status_t) switch_core_file_write_video(_In_ switch_file_handle_t *fh, void *data, switch_size_t *len);
+
+/*!
   \brief Seek a position in a file
   \param fh the file handle to seek
   \param cur_pos the current position in the file

src/include/switch_module_interfaces.h

@@ -273,6 +273,10 @@ struct switch_file_interface {
 	/*! function to write from the file */
 	switch_status_t (*file_write) (switch_file_handle_t *, void *data, switch_size_t *len);
 	/*! function to seek to a certian position in the file */
+	switch_status_t (*file_read_video) (switch_file_handle_t *, void *data, switch_size_t *len);
+	/*! function to write from the file */
+	switch_status_t (*file_write_video) (switch_file_handle_t *, void *data, switch_size_t *len);
+	/*! function to seek to a certian position in the file */
 	switch_status_t (*file_seek) (switch_file_handle_t *, unsigned int *cur_pos, int64_t samples, int whence);
 	/*! function to set meta data */
 	switch_status_t (*file_set_string) (switch_file_handle_t *fh, switch_audio_col_t col, const char *string);