avcodec: move some AVCodecContext fields to an internal struct.

A new field, AVCodecContext.internal is used to hold a new struct
AVCodecInternal, which has private fields that are not codec-specific and are
used by general libavcodec functions.

Moved internal_buffer, internal_buffer_count, and is_copy.

1 files changed, 34 insertions, 0 deletions

diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 54d57d2bec..18e851c48e 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -25,8 +25,42 @@
 #define AVCODEC_INTERNAL_H
 
 #include <stdint.h>
+
+#include "libavutil/pixfmt.h"
 #include "avcodec.h"
 
+typedef struct InternalBuffer {
+    int last_pic_num;
+    uint8_t *base[4];
+    uint8_t *data[4];
+    int linesize[4];
+    int width;
+    int height;
+    enum PixelFormat pix_fmt;
+} InternalBuffer;
+
+typedef struct AVCodecInternal {
+    /**
+     * internal buffer count
+     * used by default get/release/reget_buffer().
+     */
+    int buffer_count;
+
+    /**
+     * internal buffers
+     * used by default get/release/reget_buffer().
+     */
+    InternalBuffer *buffer;
+
+    /**
+     * Whether the parent AVCodecContext is a copy of the context which had
+     * init() called on it.
+     * This is used by multithreading - shared tables and picture pointers
+     * should be freed from the original context only.
+     */
+    int is_copy;
+} AVCodecInternal;
+
 struct AVCodecDefault {
     const uint8_t *key;
     const uint8_t *value;