#include "get_bits.h"
#include <stdint.h>
+/**
+ * Indeo 4 frame types.
+ */
+enum {
+ IVI4_FRAMETYPE_INTRA = 0,
+ IVI4_FRAMETYPE_INTRA1 = 1, ///< intra frame with slightly different bitstream coding
+ IVI4_FRAMETYPE_INTER = 2, ///< non-droppable P-frame
+ IVI4_FRAMETYPE_BIDIR = 3, ///< bidirectional frame
+ IVI4_FRAMETYPE_INTER_NOREF = 4, ///< droppable P-frame
+ IVI4_FRAMETYPE_NULL_FIRST = 5, ///< empty frame with no data
+ IVI4_FRAMETYPE_NULL_LAST = 6 ///< empty frame with no data
+};
+
#define IVI_VLC_BITS 13 ///< max number of bits of the ivi's huffman codes
#define IVI4_STREAM_ANALYSER 0
#define IVI5_IS_PROTECTED 0x20
IVI_BLK_HUFF = 1 /// Huffman table is used for coding blocks
};
-extern VLC ff_ivi_mb_vlc_tabs [8]; ///< static macroblock Huffman tables
-extern VLC ff_ivi_blk_vlc_tabs[8]; ///< static block Huffman tables
-
/**
* Common scan patterns (defined in ivi_common.c)
int8_t q_delta; ///< quant delta
int8_t mv_x; ///< motion vector (x component)
int8_t mv_y; ///< motion vector (y component)
+ int8_t b_mv_x; ///< second motion vector (x component)
+ int8_t b_mv_y; ///< second motion vector (y component)
} IVIMbInfo;
int data_size; ///< size of the band data
int16_t *buf; ///< pointer to the output buffer for this band
int16_t *ref_buf; ///< pointer to the reference frame buffer (for motion compensation)
- int16_t *bufs[3]; ///< array of pointers to the band buffers
+ int16_t *b_ref_buf; ///< pointer to the second reference frame buffer (for motion compensation)
+ int16_t *bufs[4]; ///< array of pointers to the band buffers
int pitch; ///< pitch associated with the buffers above
int is_empty; ///< = 1 if this band doesn't contain any data
int mb_size; ///< macroblock size
int num_tiles; ///< number of tiles in this band
IVITile *tiles; ///< array of tile descriptors
InvTransformPtr *inv_transform;
+ int transform_size;
DCTransformPtr *dc_transform;
int is_2d_trans; ///< 1 indicates that the two-dimensional inverse transform is used
int32_t checksum; ///< for debug purposes
typedef struct IVI45DecContext {
GetBitContext gb;
- AVFrame frame;
RVMapDesc rvmap_tabs[9]; ///< local corrected copy of the static rvmap tables
uint32_t frame_num;
int dst_buf; ///< buffer index for the currently decoded frame
int ref_buf; ///< inter frame reference buffer index
int ref2_buf; ///< temporal storage for switching buffers
+ int b_ref_buf; ///< second reference frame buffer index
IVIHuffTab mb_vlc; ///< current macroblock table descriptor
IVIHuffTab blk_vlc; ///< current block table descriptor
int (*is_nonnull_frame)(struct IVI45DecContext *ctx);
int gop_invalid;
+
+ int is_indeo4;
+
+ AVFrame *p_frame;
+ int got_p_frame;
} IVI45DecContext;
/** compare some properties of two pictures */
return (mv + (mv > 0) + (mv_scale - 1)) >> mv_scale;
}
-/**
- * Generate a huffman codebook from the given descriptor
- * and convert it into the Libav VLC table.
- *
- * @param[in] cb pointer to codebook descriptor
- * @param[out] vlc where to place the generated VLC table
- * @param[in] flag flag: 1 - for static or 0 for dynamic tables
- * @return result code: 0 - OK, -1 = error (invalid codebook descriptor)
- */
-int ff_ivi_create_huff_from_desc(const IVIHuffDesc *cb, VLC *vlc, int flag);
-
/**
* Initialize static codes used for macroblock and block decoding.
*/
int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
IVIHuffTab *huff_tab, AVCodecContext *avctx);
-/**
- * Compare two huffman codebook descriptors.
- *
- * @param[in] desc1 ptr to the 1st descriptor to compare
- * @param[in] desc2 ptr to the 2nd descriptor to compare
- * @return comparison result: 0 - equal, 1 - not equal
- */
-int ff_ivi_huff_desc_cmp(const IVIHuffDesc *desc1, const IVIHuffDesc *desc2);
-
-/**
- * Copy huffman codebook descriptors.
- *
- * @param[out] dst ptr to the destination descriptor
- * @param[in] src ptr to the source descriptor
- */
-void ff_ivi_huff_desc_copy(IVIHuffDesc *dst, const IVIHuffDesc *src);
-
/**
* Initialize planes (prepares descriptors, allocates buffers etc).
*
- * @param[in,out] planes pointer to the array of the plane descriptors
- * @param[in] cfg pointer to the ivi_pic_config structure describing picture layout
+ * @param[in,out] planes pointer to the array of the plane descriptors
+ * @param[in] cfg pointer to the ivi_pic_config structure describing picture layout
+ * @param[in] is_indeo4 flag signalling if it is Indeo 4 or not
* @return result code: 0 - OK
*/
-int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg);
-
-/**
- * Free planes, bands and macroblocks buffers.
- *
- * @param[in] planes pointer to the array of the plane descriptors
- */
-void ff_ivi_free_buffers(IVIPlaneDesc *planes);
+int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg,
+ int is_indeo4);
/**
* Initialize tile and macroblock descriptors.
*/
int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height);
-/**
- * Decode size of the tile data.
- * The size is stored as a variable-length field having the following format:
- * if (tile_data_size < 255) than this field is only one byte long
- * if (tile_data_size >= 255) than this field four is byte long: 0xFF X1 X2 X3
- * where X1-X3 is size of the tile data
- *
- * @param[in,out] gb the GetBit context
- * @return size of the tile data in bytes
- */
-int ff_ivi_dec_tile_data_size(GetBitContext *gb);
-
-/**
- * Decode block data:
- * extract huffman-coded transform coefficients from the bitstream,
- * dequantize them, apply inverse transform and motion compensation
- * in order to reconstruct the picture.
- *
- * @param[in,out] gb the GetBit context
- * @param[in] band pointer to the band descriptor
- * @param[in] tile pointer to the tile descriptor
- * @return result code: 0 - OK, -1 = error (corrupted blocks data)
- */
-int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile);
-
-/**
- * Convert and output the current plane.
- * This conversion is done by adding back the bias value of 128
- * (subtracted in the encoder) and clipping the result.
- *
- * @param[in] plane pointer to the descriptor of the plane being processed
- * @param[out] dst pointer to the buffer receiving converted pixels
- * @param[in] dst_pitch pitch for moving to the next y line
- */
-void ff_ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, int dst_pitch);
-
-int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt);
-av_cold int ff_ivi_decode_close(AVCodecContext *avctx);
+int ff_ivi_decode_close(AVCodecContext *avctx);
#endif /* AVCODEC_IVI_COMMON_H */