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single coefficient elimination

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prequantization
more readable malloc & check if NULL
error concealment / error resilience
b_quant_offset (unfinished, should be 0 for now)
data partitioning

Originally committed as revision 642 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2002-06-02 12:20:39 +00:00
parent 0d21a84605
commit 7f2fe444a3
2 changed files with 539 additions and 284 deletions
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759
libavcodec/mpegvideo.c
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64
libavcodec/mpegvideo.h
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@ -37,6 +37,10 @@ enum OutputFormat {
#define MAX_MV 2048
#define REORDER_BUFFER_SIZE (FF_MAX_B_FRAMES+2)
#define ME_MAP_SIZE 64
#define ME_MAP_SHIFT 3
#define ME_MAP_MV_BITS 11
typedef struct Predictor{
double coeff;
double count;
@ -100,8 +104,12 @@ typedef struct MpegEncContext {
int force_input_type;/* 0= no force, otherwise I_TYPE, P_TYPE, ... */
int max_b_frames; /* max number of b-frames for encoding */
float b_quant_factor;/* qscale factor between ips and b frames */
float b_quant_offset;/* qscale offset between ips and b frames */
int rc_strategy;
int b_frame_strategy;
int luma_elim_threshold;
int chroma_elim_threshold;
int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
/* the following fields are managed internally by the encoder */
@ -142,6 +150,9 @@ typedef struct MpegEncContext {
UINT8 *mbskip_table; /* used to avoid copy if macroblock skipped (for black regions for example)
and used for b-frame encoding & decoding (contains skip table of next P Frame) */
UINT8 *mbintra_table; /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
UINT8 *cbp_table; /* used to store cbp, ac_pred for partitioned decoding */
UINT8 *pred_dir_table; /* used to store pred_dir for partitioned decoding */
INT8 *qscale_table; /* used to store qscale for partitioned decoding (& postprocessing FIXME export) */
int input_qscale; /* qscale prior to reordering of frames */
int input_pict_type; /* pict_type prior to reordering of frames */
@ -159,7 +170,6 @@ typedef struct MpegEncContext {
int b_code; /* backward MV resolution for B Frames (mpeg4) */
INT16 (*motion_val)[2]; /* used for MV prediction (4MV per MB) */
INT16 (*p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
INT16 (*last_p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
INT16 (*b_forw_mv_table)[2]; /* MV table (1MV per MB) forward mode b-frame encoding */
INT16 (*b_back_mv_table)[2]; /* MV table (1MV per MB) backward mode b-frame encoding */
INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
@ -169,6 +179,10 @@ typedef struct MpegEncContext {
INT16 (*b_direct_mv_table)[2]; /* MV table (1MV per MB) direct mode b-frame encoding */
int me_method; /* ME algorithm */
uint8_t *me_scratchpad; /* data area for the me algo, so that the ME doesnt need to malloc/free */
uint32_t *me_map; /* map to avoid duplicate evaluations */
uint16_t *me_score_map; /* map to store the SADs */
int me_map_generation;
int skip_me; /* set if ME is skiped for the current MB */
int mv_dir;
#define MV_DIR_BACKWARD 1
#define MV_DIR_FORWARD 2
@ -201,12 +215,15 @@ typedef struct MpegEncContext {
int mb_x, mb_y;
int mb_incr;
int mb_intra;
UINT16 *mb_var; /* Table for MB variances */
UINT8 *mb_type; /* Table for MB type */
UINT16 *mb_var; /* Table for MB variances */
UINT16 *mc_mb_var; /* Table for motion compensated MB variances */
UINT8 *mb_type; /* Table for MB type */
#define MB_TYPE_INTRA 0x01
#define MB_TYPE_INTER 0x02
#define MB_TYPE_INTER4V 0x04
#define MB_TYPE_SKIPED 0x08
#define MB_TYPE_GMC 0x10
#define MB_TYPE_DIRECT 0x10
#define MB_TYPE_FORWARD 0x20
#define MB_TYPE_BACKWARD 0x40
@ -239,8 +256,8 @@ typedef struct MpegEncContext {
/* bit rate control */
int I_frame_bits; //FIXME used in mpeg12 ...
int avg_mb_var; /* average MB variance for current frame */
int mc_mb_var; /* motion compensated MB variance for current frame */
int mb_var_sum; /* sum of MB variance for current frame */
int mc_mb_var_sum; /* motion compensated MB variance for current frame */
int last_non_b_mc_mb_var;/* motion compensated MB variance for last non b frame */
INT64 wanted_bits;
INT64 total_bits;
@ -264,11 +281,24 @@ typedef struct MpegEncContext {
int skip_count;
int misc_bits; // cbp, mb_type
int last_bits; //temp var used for calculating the above vars
/* error concealment / resync */
int resync_mb_x; /* x position of last resync marker */
int resync_mb_y; /* y position of last resync marker */
int mb_num_left; /* number of MBs left in this video packet */
GetBitContext next_resync_gb; /* starts at the next resync marker */
int next_resync_qscale; /* qscale of next resync marker */
int next_resync_pos; /* bitstream position of next resync marker */
#define DECODING_AC_LOST -1
#define DECODING_ACDC_LOST -2
#define DECODING_DESYNC -3
int decoding_error;
int next_p_frame_damaged; /* set if the next p frame is damaged, to avoid showing trashed b frames */
int error_resilience;
/* H.263 specific */
int gob_number;
int gob_index;
int first_gob_line;
/* H.263+ specific */
int umvplus;
@ -306,12 +336,17 @@ typedef struct MpegEncContext {
int aspect_ratio_info;
int sprite_warping_accuracy;
int low_latency_sprite;
int data_partioning;
int resync_marker;
int resync_x_pos;
int data_partitioning;
int rvlc; /* reversible vlc */
int resync_marker; /* could this stream contain resync markers*/
int low_delay; /* no reordering needed / has no b-frames */
int vo_type;
int vol_control_parameters; /* does the stream contain the low_delay flag, used to workaround buggy encoders */
PutBitContext tex_pb; /* used for data partitioned VOPs */
PutBitContext pb2; /* used for data partitioned VOPs */
#define PB_BUFFER_SIZE 1024*256
uint8_t *tex_pb_buffer;
uint8_t *pb2_buffer;
/* divx specific, used to workaround (many) bugs in divx5 */
int divx_version;
@ -341,7 +376,6 @@ typedef struct MpegEncContext {
int slice_height; /* in macroblocks */
int first_slice_line; /* used in mpeg4 too to handle resync markers */
int flipflop_rounding;
int bitrate;
int msmpeg4_version; /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 */
/* decompression specific */
GetBitContext gb;
@ -402,6 +436,9 @@ void MPV_common_init_mmx(MpegEncContext *s);
#endif
int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length);
void ff_clean_intra_table_entries(MpegEncContext *s);
/* motion_est.c */
void ff_estimate_p_frame_motion(MpegEncContext * s,
@ -479,6 +516,13 @@ int intel_h263_decode_picture_header(MpegEncContext *s);
int h263_decode_mb(MpegEncContext *s,
DCTELEM block[6][64]);
int h263_get_picture_format(int width, int height);
int ff_mpeg4_decode_video_packet_header(MpegEncContext *s);
int ff_mpeg4_resync(MpegEncContext *s);
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
void ff_mpeg4_clean_buffers(MpegEncContext *s);
void ff_mpeg4_stuffing(PutBitContext * pbc);
void ff_mpeg4_init_partitions(MpegEncContext *s);
void ff_mpeg4_merge_partitions(MpegEncContext *s);
/* rv10.c */
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);