Move code shared between libdirac and libschroedinger to libschroedinger.

This also involves making some function static and changing the name
prefixes of some functions and structures.

1 files changed, 70 insertions, 0 deletions

diff --git a/libavcodec/libschroedinger.h b/libavcodec/libschroedinger.h
index 814782111b..8d04d2cdcb 100644
--- a/libavcodec/libschroedinger.h
+++ b/libavcodec/libschroedinger.h
@@ -28,8 +28,78 @@
 
 #include <schroedinger/schrobitstream.h>
 #include <schroedinger/schroframe.h>
+
 #include "avcodec.h"
 
+typedef struct {
+    uint16_t width;
+    uint16_t height;
+    uint16_t frame_rate_num;
+    uint16_t frame_rate_denom;
+} SchroVideoFormatInfo;
+
+/**
+* contains a single encoded frame returned from Dirac or Schroedinger
+*/
+typedef struct FFSchroEncodedFrame {
+    /** encoded frame data */
+    uint8_t *p_encbuf;
+
+    /** encoded frame size */
+    uint32_t size;
+
+    /** encoded frame number. Will be used as pts */
+    uint32_t frame_num;
+
+    /** key frame flag. 1 : is key frame , 0 : in not key frame */
+    uint16_t key_frame;
+} FFSchroEncodedFrame;
+
+/**
+* queue element
+*/
+typedef struct FFSchroQueueElement {
+    /** Data to be stored in queue*/
+    void *data;
+    /** Pointer to next element queue */
+    struct FFSchroQueueElement *next;
+} FFSchroQueueElement;
+
+
+/**
+* A simple queue implementation used in libschroedinger
+*/
+typedef struct FFSchroQueue {
+    /** Pointer to head of queue */
+    FFSchroQueueElement *p_head;
+    /** Pointer to tail of queue */
+    FFSchroQueueElement *p_tail;
+    /** Queue size*/
+    int size;
+} FFSchroQueue;
+
+/**
+* Initialise the queue
+*/
+void ff_schro_queue_init(FFSchroQueue *queue);
+
+/**
+* Add an element to the end of the queue
+*/
+int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data);
+
+/**
+* Return the first element in the queue
+*/
+void *ff_schro_queue_pop(FFSchroQueue *queue);
+
+/**
+* Free the queue resources. free_func is a function supplied by the caller to
+* free any resources allocated by the caller. The data field of the queue
+* element is passed to it.
+*/
+void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *));
+
 static const struct {
     enum PixelFormat  ff_pix_fmt;
     SchroChromaFormat schro_pix_fmt;