28 #ifndef AVCODEC_MPEGVIDEO_H
29 #define AVCODEC_MPEGVIDEO_H
52 #include "libavutil/opt.h"
54 #define FRAME_SKIPPED 100
66 #define MAX_THREADS 16
68 #define MAX_PICTURE_COUNT 32
70 #define MAX_B_FRAMES 16
72 #define ME_MAP_SIZE 64
74 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
76 #define INPLACE_OFFSET 16
81 #define SEQ_END_CODE 0x000001b7
82 #define SEQ_START_CODE 0x000001b3
83 #define GOP_START_CODE 0x000001b8
84 #define PICTURE_START_CODE 0x00000100
85 #define SLICE_MIN_START_CODE 0x00000101
86 #define SLICE_MAX_START_CODE 0x000001af
87 #define EXT_START_CODE 0x000001b5
88 #define USER_START_CODE 0x000001b2
196 int *mx_ptr,
int *my_ptr,
int dmin,
197 int src_index,
int ref_index,
384 #define MV_DIR_FORWARD 1
385 #define MV_DIR_BACKWARD 2
388 #define MV_TYPE_16X16 0
389 #define MV_TYPE_8X8 1
390 #define MV_TYPE_16X8 2
391 #define MV_TYPE_FIELD 3
392 #define MV_TYPE_DMV 4
437 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
604 #define SLICE_ERROR -1
606 #define SLICE_NOEND -3
611 int16_t *block,
int n,
int qscale);
613 int16_t *block,
int n,
int qscale);
615 int16_t *block,
int n,
int qscale);
617 int16_t *block,
int n,
int qscale);
619 int16_t *block,
int n,
int qscale);
621 int16_t *block,
int n,
int qscale);
623 int16_t *block,
int n,
int qscale);
646 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
647 ((pic && pic >= old_ctx->picture && \
648 pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
649 &new_ctx->picture[pic - old_ctx->picture] : NULL)
652 #define FF_MPV_FLAG_SKIP_RD 0x0001
653 #define FF_MPV_FLAG_STRICT_GOP 0x0002
654 #define FF_MPV_FLAG_QP_RD 0x0004
655 #define FF_MPV_FLAG_CBP_RD 0x0008
656 #define FF_MPV_FLAG_NAQ 0x0010
657 #define FF_MPV_FLAG_MV0 0x0020
659 #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
660 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
661 #define FF_MPV_COMMON_OPTS \
662 { "mpv_flags", "Flags common for all mpegvideo-based encoders.", FF_MPV_OFFSET(mpv_flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "mpv_flags" },\
663 { "skip_rd", "RD optimal MB level residual skipping", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_SKIP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
664 { "strict_gop", "Strictly enforce gop size", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_STRICT_GOP }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
665 { "qp_rd", "Use rate distortion optimization for qp selection", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_QP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
666 { "cbp_rd", "use rate distortion optimization for CBP", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_CBP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
667 { "naq", "normalize adaptive quantization", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
668 { "mv0", "always try a mb with mv=<0,0>", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_MV0 }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
669 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
670 FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
671 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
672 FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
673 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
674 { "error_rate", "Simulate errors in the bitstream to test error concealment.", \
675 FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },
679 #define FF_MPV_GENERIC_CLASS(name) \
680 static const AVClass name ## _class = {\
681 .class_name = #name " encoder",\
682 .item_name = av_default_item_name,\
683 .option = ff_mpv_generic_options,\
684 .version = LIBAVUTIL_VERSION_INT,\
717 const AVFrame *frame,
int *got_packet);
732 const uint16_t *quant_matrix,
int bias,
int qmin,
int qmax,
int intra);
757 const int block_size = 8;
765 s->
dest[0]+= 2*block_size;
766 s->
dest[1]+= block_size;
767 s->
dest[2]+= block_size;
780 static const uint8_t h263_chroma_roundtab[16] = {
782 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
784 return h263_chroma_roundtab[x & 0xf] + (x >> 3);
795 int16_t (*mv_table)[2],
int f_code,
int type,
int truncate);
799 int P[10][2],
int src_index,
int ref_index, int16_t (*
last_mv)[2],
800 int ref_mv_scale,
int size,
int h);
802 int ref_index,
int size,
int h,
int add_rate);
810 int16_t
block[6][64],
811 int motion_x,
int motion_y);
828 int16_t
block[6][64],
829 int motion_x,
int motion_y);
840 int motion_x,
int motion_y,
int h);
843 int16_t
block[6][64],
844 int motion_x,
int motion_y);
int bitstream_buffer_size
uint8_t * scratchpad
data area for the ME algo, so that the ME does not need to malloc/free
int ff_pre_estimate_p_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
int chroma_elim_threshold
int rv10_first_dc_coded[3]
int frame_bits
bits used for the current frame
RateControlContext rc_context
contains stuff only accessed in ratecontrol.c
int16_t(* b_bidir_back_mv_table_base)[2]
ScanTable intra_v_scantable
int time_increment_bits
< number of bits to represent the fractional part of time (encoder only)
This structure describes decoded (raw) audio or video data.
void ff_mpeg1_encode_slice_header(MpegEncContext *s)
int skip
set if ME is skipped for the current MB
int16_t(* p_mv_table)[2]
MV table (1MV per MB) p-frame encoding.
uint8_t * rd_scratchpad
scratchpad for rate distortion mb decision
uint8_t * fcode_tab
smallest fcode needed for each MV
int start_mb_y
start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
uint8_t * mb_mean
Table for MB luminance.
int sprite_warping_accuracy
int last_mv[2][2][2]
last MV, used for MV prediction in MPEG1 & B-frame MPEG4
int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
int pre_pass
= 1 for the pre pass
void ff_init_block_index(MpegEncContext *s)
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
AVFrame * tmp_frames[MAX_B_FRAMES+2]
const uint8_t ff_alternate_vertical_scan[64]
uint8_t * coded_block_base
int end_mb_y
end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
uint16_t * mb_var
Table for MB variances.
uint16_t chroma_intra_matrix[64]
uint8_t * current_mv_penalty
int16_t(*[3] ac_val)[16]
used for for mpeg4 AC prediction, all 3 arrays must be continuous
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
uint16_t chroma_inter_matrix[64]
void ff_mpv_frame_end(MpegEncContext *s)
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
int(* sub_motion_search)(struct MpegEncContext *s, int *mx_ptr, int *my_ptr, int dmin, int src_index, int ref_index, int size, int h)
int needs_realloc
Picture needs to be reallocated (eg due to a frame size change)
uint8_t * bitstream_buffer
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
int obmc
overlapped block motion compensation
int ff_msmpeg4_decode_init(AVCodecContext *avctx)
int field_picture
whether or not the picture was encoded in separate fields
void ff_msmpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
void ff_convert_matrix(MpegEncContext *s, int(*qmat)[64], uint16_t(*qmat16)[2][64], const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
int scan_offset
reserve space for SVCD scan offset user data.
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced p-frame encoding.
int16_t(* p_mv_table_base)[2]
int min_qcoeff
minimum encodable coefficient
int real_sprite_warping_points
int ff_get_mb_score(MpegEncContext *s, int mx, int my, int src_index, int ref_index, int size, int h, int add_rate)
uint32_t * score_map
map to store the scores
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
int mpv_flags
flags set by private options
uint8_t * intra_ac_vlc_length
int padding_bug_score
used to detect the VERY common padding bug in MPEG4
int mb_num
number of MBs of a picture
int time_base
time in seconds of last I,P,S Frame
void ff_print_debug_info(MpegEncContext *s, Picture *p)
Print debugging info for the given picture.
int h263_aic
Advanded INTRA Coding (AIC)
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode b-frame encoding.
int encoding
true if we are encoding (vs decoding)
int ff_epzs_motion_search(MpegEncContext *s, int *mx_ptr, int *my_ptr, int P[10][2], int src_index, int ref_index, int16_t(*last_mv)[2], int ref_mv_scale, int size, int h)
int16_t(* b_back_mv_table_base)[2]
int skipdct
skip dct and code zero residual
int picture_in_gop_number
0-> first pic in gop, ...
int alt_inter_vlc
alternative inter vlc
int mb_num_left
number of MBs left in this video packet (for partitioned Slices only)
int64_t time
time of current frame
void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
permute block according to permuatation.
const AVOption ff_mpv_generic_options[]
op_pixels_func(* hpel_put)[4]
Picture ** input_picture
next pictures on display order for encoding
PutBitContext pb2
used for data partitioned VOPs
enum OutputFormat out_format
output format
void ff_denoise_dct(MpegEncContext *s, int16_t *block)
uint16_t(* dct_offset)[64]
void ff_mpv_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], qpel_mc_func(*qpix_op)[16])
uint8_t * pred_dir_table
used to store pred_dir for partitioned decoding
Multithreading support functions.
void ff_mpeg_unref_picture(MpegEncContext *s, Picture *picture)
Deallocate a picture.
Motion estimation context.
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
qpel_mc_func(* qpel_put)[16]
int misc_bits
cbp, mb_type
int no_rounding
apply no rounding to motion compensation (MPEG4, msmpeg4, ...) for b-frames rounding mode is always 0...
Picture current_picture
copy of the current picture structure.
GetBitContext last_resync_gb
used to search for the next resync marker
void ff_mpv_common_init_arm(MpegEncContext *s)
void ff_mpv_common_init_ppc(MpegEncContext *s)
int16_t(* b_bidir_forw_mv_table)[2]
MV table (1MV per MB) bidir mode b-frame encoding.
uint8_t(* mv_penalty)[MAX_MV *2+1]
amount of bits needed to encode a MV
void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
bitstream reader API header.
uint16_t pp_time
time distance between the last 2 p,s,i frames
AVBufferRef * mb_type_buf
uint8_t * b_scratchpad
scratchpad used for writing into write only buffers
int flags2
AVCodecContext.flags2.
op_pixels_func(* hpel_avg)[4]
int mb_height
number of MBs horizontally & vertically
int codec_tag
internal codec_tag upper case converted from avctx codec_tag
int max_qcoeff
maximum encodable coefficient
int16_t(*[2][2] p_field_mv_table_base)[2]
int ff_wmv2_decode_picture_header(MpegEncContext *s)
int dquant
qscale difference to prev qscale
void ff_estimate_p_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
int gop_picture_number
index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
static void ff_update_block_index(MpegEncContext *s)
int sprite_offset[2][2]
sprite offset[isChroma][isMVY]
AVBufferRef * mb_mean_buf
int(* q_inter_matrix)[64]
static int get_bits_diff(MpegEncContext *s)
int(* q_intra_matrix)[64]
precomputed matrix (combine qscale and DCT renorm)
int intra_only
if true, only intra pictures are generated
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
int16_t * dc_val[3]
used for mpeg4 DC prediction, all 3 arrays must be continuous
int h263_plus
h263 plus headers
int slice_context_count
number of used thread_contexts
int last_non_b_pict_type
used for mpeg4 gmc b-frames & ratecontrol
AVCodecID
Identify the syntax and semantics of the bitstream.
int ff_wmv2_encode_picture_header(MpegEncContext *s, int picture_number)
int stream_codec_tag
internal stream_codec_tag upper case converted from avctx stream_codec_tag
int last_dc[3]
last DC values for MPEG1
int16_t direct_scale_mv[2][64]
precomputed to avoid divisions in ff_mpeg4_set_direct_mv
uint8_t * inter_ac_vlc_last_length
static int ff_h263_round_chroma(int x)
int rl_chroma_table_index
int mb_skipped
MUST BE SET only during DECODING.
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
int strict_std_compliance
strictly follow the std (MPEG4, ...)
int partitioned_frame
is current frame partitioned
void ff_mpv_common_end(MpegEncContext *s)
int unrestricted_mv
mv can point outside of the coded picture
int last_lambda_for[5]
last lambda for a specific pict type
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
int ff_wmv2_decode_secondary_picture_header(MpegEncContext *s)
int h263_slice_structured
int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src)
void ff_msmpeg4_encode_picture_header(MpegEncContext *s, int picture_number)
MpegvideoEncDSPContext mpvencdsp
int quarter_sample
1->qpel, 0->half pel ME/MC
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
int low_delay
no reordering needed / has no b-frames
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
uint8_t *[2][2] b_field_select_table
void ff_fix_long_mvs(MpegEncContext *s, uint8_t *field_select_table, int field_select, int16_t(*mv_table)[2], int f_code, int type, int truncate)
Libavcodec external API header.
static int put_bits_count(PutBitContext *s)
int resync_mb_x
x position of last resync marker
int coded_picture_number
used to set pic->coded_picture_number, should not be used for/by anything else
AVBufferRef * hwaccel_priv_buf
void ff_mpv_common_init_neon(MpegEncContext *s)
uint8_t * intra_ac_vlc_last_length
int sprite_delta[2][2]
sprite_delta [isY][isMVY]
const uint8_t ff_h263_chroma_qscale_table[32]
AVBufferRef * motion_val_buf[2]
void ff_free_picture_tables(Picture *pic)
int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
generic function called after decoding the header and before a frame is decoded.
uint16_t(* q_inter_matrix16)[2][64]
uint8_t * vbv_delay_ptr
pointer to vbv_delay in the bitstream
int fixed_qscale
fixed qscale if non zero
int next_p_frame_damaged
set if the next p frame is damaged, to avoid showing trashed b frames
int me_method
ME algorithm.
int umvplus
== H263+ && unrestricted_mv
Picture new_picture
copy of the source picture structure for encoding.
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
int intra_quant_bias
bias for the quantizer
uint8_t * mbskip_table
used to avoid copy if macroblock skipped (for black regions for example) and used for b-frame encodin...
int ff_init_me(MpegEncContext *s)
int16_t(*[2] motion_val)[2]
Picture * current_picture_ptr
pointer to the current picture
void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], int motion_x, int motion_y, int h)
unsigned int allocated_bitstream_buffer_size
void * hwaccel_picture_private
hardware accelerator private data
void ff_msmpeg4_encode_init(MpegEncContext *s)
int16_t(* ac_val_base)[16]
const uint8_t ff_mpeg1_dc_scale_table[128]
int ff_find_unused_picture(MpegEncContext *s, int shared)
uint16_t(* q_intra_matrix16)[2][64]
identical to the above but for MMX & these are not permutated, second 64 entries are bias ...
int16_t(*[2][2][2] b_field_mv_table_base)[2]
int(* ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2]
[mb_intra][isChroma][level][run][last]
int ff_msmpeg4_decode_ext_header(MpegEncContext *s, int buf_size)
int16_t(* b_forw_mv_table_base)[2]
int16_t(*[12] pblocks)[64]
void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
void ff_fix_long_p_mvs(MpegEncContext *s)
int block_last_index[12]
last non zero coefficient in block
int pb_frame
PB frame mode (0 = none, 1 = base, 2 = improved)
int(* decode_mb)(struct MpegEncContext *s, int16_t block[6][64])
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
int ac_esc_length
num of bits needed to encode the longest esc
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix)
int block_index[6]
index to current MB in block based arrays with edges
int penalty_factor
an estimate of the bits required to code a given mv value, e.g.
int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
void ff_mpeg_flush(AVCodecContext *avctx)
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
void ff_mpv_common_init_x86(MpegEncContext *s)
struct MJpegContext * mjpeg_ctx
int first_field
is 1 for the first field of a field picture 0 otherwise
void ff_mpv_idct_init(MpegEncContext *s)
int first_slice_line
used in mpeg4 too to handle resync markers
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
uint16_t * mc_mb_var
Table for motion compensated MB variances.
AVBufferRef * qscale_table_buf
int16_t(* b_bidir_forw_mv_table_base)[2]
uint16_t inter_matrix[64]
uint8_t * luma_dc_vlc_length
int concealment_motion_vectors
void ff_estimate_b_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
struct MpegEncContext * thread_context[MAX_THREADS]
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
int h263_flv
use flv h263 header
ptrdiff_t linesize
line size, in bytes, may be different from width
void ff_mpv_decode_defaults(MpegEncContext *s)
Set the given MpegEncContext to defaults for decoding.
int ff_mpv_lowest_referenced_row(MpegEncContext *s, int dir)
find the lowest MB row referenced in the MVs
main external API structure.
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
ScanTable intra_scantable
uint8_t * coded_block
used for coded block pattern prediction (msmpeg4v3, wmv1)
void ff_mpeg1_encode_init(MpegEncContext *s)
int height
picture size. must be a multiple of 16
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
const uint8_t *const ff_mpeg2_dc_scale_table[4]
int64_t dts_delta
pts difference between the first and second input frame, used for calculating dts of the first frame ...
const uint8_t ff_alternate_horizontal_scan[64]
int64_t user_specified_pts
last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
int ff_mpv_encode_init(AVCodecContext *avctx)
Picture * picture
main picture buffer
int data_partitioning
data partitioning flag from header
uint8_t * inter_ac_vlc_length
void ff_mpv_decode_mb(MpegEncContext *s, int16_t block[12][64])
Describe the class of an AVClass context structure.
ScanTable intra_h_scantable
const uint8_t ff_aic_dc_scale_table[32]
int16_t(*[2][2][2] b_field_mv_table)[2]
MV table (4MV per MB) interlaced b-frame encoding.
uint8_t * cbp_table
used to store cbp, ac_pred for partitioned decoding
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
int input_picture_number
used to set pic->display_picture_number, should not be used for/by anything else
int slice_height
in macroblocks
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
int mb_info
interval for outputting info about mb offsets as side data
int(* dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
int f_code
forward MV resolution
void(* denoise_dct)(struct MpegEncContext *s, int16_t *block)
int max_b_frames
max number of b-frames for encoding
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
int bit_rate
wanted bit rate
int last_mv_dir
last mv_dir, used for b frame encoding
int h263_pred
use mpeg4/h263 ac/dc predictions
int16_t(* b_bidir_back_mv_table)[2]
MV table (1MV per MB) bidir mode b-frame encoding.
uint8_t *[2] p_field_select_table
int16_t(* b_direct_mv_table)[2]
MV table (1MV per MB) direct mode b-frame encoding.
int ff_get_best_fcode(MpegEncContext *s, int16_t(*mv_table)[2], int type)
uint16_t pb_field_time
like above, just for interlaced
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
qpel_mc_func(* qpel_avg)[16]
int16_t(* b_forw_mv_table)[2]
MV table (1MV per MB) forward mode b-frame encoding.
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
struct AVCodecContext * avctx
PutBitContext pb
bit output
A reference to a data buffer.
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
int quantizer_noise_shaping
int(* fast_dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
int direct_basis_mv[4][2]
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
AVBufferRef * mbskip_table_buf
int adaptive_quant
use adaptive quantization
void ff_msmpeg4_encode_ext_header(MpegEncContext *s)
Picture last_picture
copy of the previous picture structure.
uint8_t * obmc_scratchpad
int ff_rv_decode_dc(MpegEncContext *s, int n)
Picture * last_picture_ptr
pointer to the previous picture.
int co_located_mv[4][2]
mv from last P-frame for direct mode ME
int64_t reordered_pts
reordered pts to be used as dts for the next output frame when there's a delay
int ff_mpv_encode_end(AVCodecContext *avctx)
const uint8_t * chroma_qscale_table
qscale -> chroma_qscale (h263)
int ff_mpv_common_frame_size_change(MpegEncContext *s)
uint32_t * map
map to avoid duplicate evaluations
Core video DSP helper functions.
int last_bits
temp var used for calculating the above vars
void ff_mpv_encode_init_x86(MpegEncContext *s)
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
int drop_frame_timecode
timecode is in drop frame format.
int resync_mb_y
y position of last resync marker
int16_t(* block)[64]
points to one of the following blocks
ParseContext parse_context
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number)
PutBitContext tex_pb
used for data partitioned VOPs
Picture next_picture
copy of the next picture structure.
AVBufferRef * mc_mb_var_buf
Picture ** reordered_input_picture
pointer to the next pictures in codedorder for encoding
int chroma_qscale
chroma QP
int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared)
Allocate a Picture.
int mb_var_sum
sum of MB variance for current frame
int flags
AVCodecContext.flags (HQ, MV4, ...)
int mc_mb_var_sum
motion compensated MB variance for current frame
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
uint32_t * mb_type
types and macros are defined in mpegutils.h
void ff_mpv_report_decode_progress(MpegEncContext *s)
int rv10_version
RV10 version: 0 or 3.
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
ScanTable inter_scantable
if inter == intra then intra should be used to reduce tha cache usage
int ff_msmpeg4_decode_picture_header(MpegEncContext *s)
int h263_long_vectors
use horrible h263v1 long vector mode
int inter_quant_bias
bias for the quantizer
int16_t(* b_direct_mv_table_base)[2]
int b_code
backward MV resolution for B Frames (mpeg4)
int h263_aic_dir
AIC direction: 0 = left, 1 = top.
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
void ff_mpv_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding). ...
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
This structure stores compressed data.
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
unsigned int lambda
lagrange multipler used in rate distortion
uint16_t pb_time
time distance between the last b and p,s,i frame
AVBufferRef * ref_index_buf[2]
int next_lambda
next lambda used for retrying to encode a frame