#include <stdint.h>
#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
/**
* 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
/**
* 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
/**
* 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;
+ AVFrame frame;
+ 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
+
+ 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;
+} IVI45DecContext;
+
/** compare some properties of two pictures */
static inline int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
{
- return (str1->pic_width != str2->pic_width || str1->pic_height != str2->pic_height ||
- str1->chroma_width != str2->chroma_width || str1->chroma_height != str2->chroma_height ||
- str1->tile_width != str2->tile_width || str1->tile_height != str2->tile_height ||
- str1->luma_bands != str2->luma_bands || str1->chroma_bands != str2->chroma_bands);
+ return str1->pic_width != str2->pic_width || str1->pic_height != str2->pic_height ||
+ str1->chroma_width != str2->chroma_width || str1->chroma_height != str2->chroma_height ||
+ str1->tile_width != str2->tile_width || str1->tile_height != str2->tile_height ||
+ str1->luma_bands != str2->luma_bands || str1->chroma_bands != str2->chroma_bands;
}
/** calculate number of tiles in a stride */
*/
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
*/
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 *data_size,
+ AVPacket *avpkt);
+av_cold int ff_ivi_decode_close(AVCodecContext *avctx);
#endif /* AVCODEC_IVI_COMMON_H */
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