#ifndef AVCODEC_INTRAX8_H
#define AVCODEC_INTRAX8_H
+#include "blockdsp.h"
#include "get_bits.h"
-#include "mpegvideo.h"
+#include "idctdsp.h"
#include "intrax8dsp.h"
+#include "mpegpicture.h"
-typedef struct{
- VLC * j_ac_vlc[4];//they point to the static j_mb_vlc
- VLC * j_orient_vlc;
- VLC * j_dc_vlc[3];
+typedef struct IntraX8Context {
+ VLC *j_ac_vlc[4]; // they point to the static j_mb_vlc
+ VLC *j_orient_vlc;
+ VLC *j_dc_vlc[3];
int use_quant_matrix;
-//set by ff_intrax8_common_init
- uint8_t * prediction_table;//2*(mb_w*2)
+
+ // set by ff_intrax8_common_init
+ uint8_t *prediction_table; // 2 * (mb_w * 2)
ScanTable scantable[3];
-//set by the caller codec
- MpegEncContext * s;
+ AVCodecContext *avctx;
+ int *block_last_index; ///< last nonzero coefficient in block
+ int16_t (*block)[64];
+
+ // set by the caller codec
IntraX8DSPContext dsp;
+ IDCTDSPContext idsp;
+ BlockDSPContext bdsp;
int quant;
int dquant;
int qsum;
-//calculated per frame
+ int loopfilter;
+ AVFrame *frame;
+ GetBitContext *gb;
+
+ // calculated per frame
int quant_dc_chroma;
int divide_quant_dc_luma;
int divide_quant_dc_chroma;
-//changed per block
+ uint8_t *dest[3];
+ uint8_t scratchpad[42]; // size of the block is fixed (8x8 plus padding)
+
+ // changed per block
int edges;
int flat_dc;
int predicted_dc;
int chroma_orient;
int orient;
int est_run;
+
+ // block props
+ int mb_x, mb_y;
+ int mb_width, mb_height;
} IntraX8Context;
-void ff_intrax8_common_init(IntraX8Context * w, MpegEncContext * const s);
-void ff_intrax8_common_end(IntraX8Context * w);
-int ff_intrax8_decode_picture(IntraX8Context * w, int quant, int halfpq);
+/**
+ * Initialize IntraX8 frame decoder.
+ * @param avctx pointer to AVCodecContext
+ * @param w pointer to IntraX8Context
+ * @param idsp pointer to IDCTDSPContext
+ * @param block pointer to block array
+ * @param block_last_index pointer to index array
+ * @param mb_width macroblock width
+ * @param mb_height macroblock height
+ * @return 0 on success, a negative AVERROR value on error
+ */
+int ff_intrax8_common_init(AVCodecContext *avctx,
+ IntraX8Context *w, IDCTDSPContext *idsp,
+ int16_t (*block)[64],
+ int block_last_index[12],
+ int mb_width, int mb_height);
+
+/**
+ * Destroy IntraX8 frame structure.
+ * @param w pointer to IntraX8Context
+ */
+void ff_intrax8_common_end(IntraX8Context *w);
+
+/**
+ * Decode single IntraX8 frame.
+ * @param w pointer to IntraX8Context
+ * @param pict the output Picture containing an AVFrame
+ * @param gb open bitstream reader
+ * @param mb_x pointer to the x coordinate of the current macroblock
+ * @param mb_y pointer to the y coordinate of the current macroblock
+ * @param dquant doubled quantizer, it would be odd in case of VC-1 halfpq==1.
+ * @param quant_offset offset away from zero
+ * @param loopfilter enable filter after decoding a block
+ */
+int ff_intrax8_decode_picture(IntraX8Context *w, Picture *pict,
+ GetBitContext *gb, int *mb_x, int *mb_y,
+ int quant, int halfpq,
+ int loopfilter, int lowdelay);
#endif /* AVCODEC_INTRAX8_H */