#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
/**
* huffman codebook descriptor
*/
-typedef struct {
+typedef struct IVIHuffDesc {
int32_t num_rows;
uint8_t xbits[16];
} IVIHuffDesc;
/**
* macroblock/block huffman table descriptor
*/
-typedef struct {
+typedef struct IVIHuffTab {
int32_t tab_sel; /// index of one of the predefined tables
/// or "7" for custom one
VLC *tab; /// pointer to the table associated with tab_sel
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)
/**
* run-value (RLE) table descriptor
*/
-typedef struct {
+typedef struct RVMapDesc {
uint8_t eob_sym; ///< end of block symbol
uint8_t esc_sym; ///< escape symbol
uint8_t runtab[256];
/**
* information for Indeo macroblock (16x16, 8x8 or 4x4)
*/
-typedef struct {
+typedef struct IVIMbInfo {
int16_t xpos;
int16_t ypos;
uint32_t buf_offs; ///< address in the output buffer for this mb
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;
/**
* information for Indeo tile
*/
-typedef struct {
+typedef struct IVITile {
int xpos;
int ypos;
int width;
int height;
+ int mb_size;
int is_empty; ///< = 1 if this tile doesn't contain any data
int data_size; ///< size of the data in bytes
int num_MBs; ///< number of macroblocks in this tile
/**
* information for Indeo wavelet band
*/
-typedef struct {
+typedef struct IVIBandDesc {
int plane; ///< plane number this band belongs to
int band_num; ///< band number
int width;
int height;
+ int aheight; ///< aligned band height
const uint8_t *data_ptr; ///< ptr to the first byte of the band data
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
/**
* color plane (luma or chroma) information
*/
-typedef struct {
+typedef struct IVIPlaneDesc {
uint16_t width;
uint16_t height;
uint8_t num_bands; ///< number of bands this plane subdivided into
} IVIPlaneDesc;
-typedef struct {
+typedef struct IVIPicConfig {
uint16_t pic_width;
uint16_t pic_height;
uint16_t chroma_width;
uint8_t chroma_bands;
} IVIPicConfig;
+typedef struct IVI45DecContext {
+ GetBitContext gb;
+ RVMapDesc rvmap_tabs[9]; ///< local corrected copy of the static rvmap tables
+
+ uint32_t frame_num;
+ int frame_type;
+ int prev_frame_type; ///< frame type of the previous frame
+ uint32_t data_size; ///< size of the frame data in bytes from picture header
+ int is_scalable;
+ int transp_status; ///< transparency mode status: 1 - enabled
+ const uint8_t *frame_data; ///< input frame data pointer
+ int inter_scal; ///< signals a sequence of scalable inter frames
+ uint32_t frame_size; ///< frame size in bytes
+ uint32_t pic_hdr_size; ///< picture header size in bytes
+ uint8_t frame_flags;
+ uint16_t checksum; ///< frame checksum
+
+ IVIPicConfig pic_conf;
+ IVIPlaneDesc planes[3]; ///< color planes
+
+ int buf_switch; ///< used to switch between three buffers
+ 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
+
+ uint8_t rvmap_sel;
+ uint8_t in_imf;
+ uint8_t in_q; ///< flag for explicitly stored quantiser delta
+ uint8_t pic_glob_quant;
+ uint8_t unknown1;
+
+ uint16_t gop_hdr_size;
+ uint8_t gop_flags;
+ uint32_t lock_word;
+
+#if IVI4_STREAM_ANALYSER
+ uint8_t has_b_frames;
+ uint8_t has_transp;
+ uint8_t uses_tiling;
+ uint8_t uses_haar;
+ uint8_t uses_fullpel;
+#endif
+
+ int (*decode_pic_hdr) (struct IVI45DecContext *ctx, AVCodecContext *avctx);
+ int (*decode_band_hdr) (struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx);
+ int (*decode_mb_info) (struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx);
+ void (*switch_buffers) (struct IVI45DecContext *ctx);
+ 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 */
static inline int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
{
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);
-
-/**
- * Handle empty tiles by performing data copying and motion
- * compensation respectively.
- *
- * @param[in] avctx ptr to the AVCodecContext
- * @param[in] band pointer to the band descriptor
- * @param[in] tile pointer to the tile descriptor
- * @param[in] mv_scale scaling factor for motion vectors
- */
-void ff_ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
- IVITile *tile, int32_t mv_scale);
-
-/**
- * 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);
-
-/**
- * Calculate band checksum from band data.
- */
-uint16_t ivi_calc_band_checksum (IVIBandDesc *band);
-
-/**
- * Verify that band data lies in range.
- */
-int ivi_check_band (IVIBandDesc *band, const uint8_t *ref, int pitch);
+int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+ AVPacket *avpkt);
+int ff_ivi_decode_close(AVCodecContext *avctx);
#endif /* AVCODEC_IVI_COMMON_H */
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