23 #include "libavutil/attributes.h"
24 #include "libavutil/log.h"
25 #include "libavutil/opt.h"
46 #define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run)*128 + (level))
68 for(j=1; j<=block_last_index; j++){
69 const int index= scantable[j];
73 if((level&(~127)) == 0){
135 int16_t *ac_val, *ac_val1;
145 if(s->
mb_y==0 || s->
qscale == qscale_table[xy] || n==2 || n==3){
167 if(s->
mb_x==0 || s->
qscale == qscale_table[xy] || n==1 || n==3){
188 if(block[n][ st[n][i] ])
break;
215 for(i=0; i<s->
mb_num; i++){
217 odd += qscale_table[mb_xy]&1;
220 if(2*odd > s->
mb_num) odd=1;
223 for(i=0; i<s->
mb_num; i++){
225 if((qscale_table[mb_xy]&1) != odd)
226 qscale_table[mb_xy]++;
227 if(qscale_table[mb_xy] > 31)
228 qscale_table[mb_xy]= 31;
231 for(i=1; i<s->
mb_num; i++){
278 level = (-
level) ^ ((1 << size) - 1);
301 int i, last_non_zero;
309 if(last_index<1)
return;
314 if(last_index<0)
return;
321 last_non_zero = i - 1;
322 for (; i < last_index; i++) {
323 int level = block[ scan_table[i] ];
325 int run = i - last_non_zero - 1;
327 if((level&(~127)) == 0){
329 put_bits(ac_pb, len_tab[index], bits_tab[index]);
331 put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(0<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1);
337 int level = block[ scan_table[i] ];
338 int run = i - last_non_zero - 1;
340 if((level&(~127)) == 0){
342 put_bits(ac_pb, len_tab[index], bits_tab[index]);
344 put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(1<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1);
352 int i, last_non_zero;
360 if(last_index<1)
return len;
364 if(last_index<0)
return 0;
370 last_non_zero = i - 1;
371 for (; i < last_index; i++) {
372 int level = block[ scan_table[i] ];
374 int run = i - last_non_zero - 1;
376 if((level&(~127)) == 0){
378 len += len_tab[
index];
380 len += 7+2+1+6+1+12+1;
386 int level = block[ scan_table[i] ];
387 int run = i - last_non_zero - 1;
389 if((level&(~127)) == 0){
391 len += len_tab[
index];
393 len += 7+2+1+6+1+12+1;
406 for (i = 0; i < 6; i++) {
411 for (i = 0; i < 6; i++) {
417 for (i = 0; i < 6; i++) {
422 for (i = 0; i < 6; i++) {
430 int motion_x,
int motion_y,
int mb_type)
438 for (i = 0; i < 6; i++)
446 if ((motion_x | motion_y | s->
dquant | mb_type) == 0)
449 zero_score *= lambda;
450 if (zero_score <= score)
454 for (i = 0; i < 6; i++) {
461 for (i = 0; i < 6; i++) {
473 int16_t
block[6][64],
474 int motion_x,
int motion_y)
476 int cbpc, cbpy, pred_x, pred_y;
486 static const int mb_type_table[8]= {-1, 3, 2, 1,-1,-1,-1, 0};
487 int mb_type= mb_type_table[s->
mv_dir];
516 cbp=
get_b_cbp(s, block, motion_x, motion_y, mb_type);
518 if ((cbp | motion_x | motion_y | mb_type) ==0) {
524 if(interleaved_stats){
552 if(interleaved_stats){
608 if(interleaved_stats){
614 if(interleaved_stats){
619 cbp=
get_p_cbp(s, block, motion_x, motion_y);
653 for(y1=0; y1<ye; y1++){
654 for(x1=0; x1<xe; x1++){
658 diff= diff*256/(xe*ye);
674 if(interleaved_stats){
704 if(interleaved_stats){
712 motion_y - pred_y, s->
f_code);
728 if(interleaved_stats){
740 s->
mv[0][0][1] - pred_y, s->
f_code);
742 s->
mv[0][1][1] - pred_y, s->
f_code);
755 if(interleaved_stats){
768 if(interleaved_stats){
774 if(interleaved_stats){
783 int zigzag_last_index[6];
800 for (i = 0; i < 6; i++) {
828 if(interleaved_stats){
834 if(interleaved_stats){
853 if(length)
put_bits(pbc, length, (1<<length)-1);
867 int hours, minutes, seconds;
880 minutes=
FFUDIV(seconds, 60); seconds =
FFUMOD(seconds, 60);
881 hours =
FFUDIV(minutes, 60); minutes =
FFUMOD(minutes, 60);
882 hours =
FFUMOD(hours , 24);
896 int profile_and_level_indication;
902 profile_and_level_indication= 0xF0;
904 profile_and_level_indication= 0x00;
908 profile_and_level_indication |= s->
avctx->
level;
910 profile_and_level_indication |= 1;
913 if(profile_and_level_indication>>4 == 0xF){
924 put_bits(&s->
pb, 8, profile_and_level_indication);
1003 if (vo_ver_id == 1) {
1027 if (vo_ver_id != 1){
1047 int time_div, time_mod;
1101 int level, uni_code, uni_len;
1103 for(level=-256; level<256; level++){
1114 l= (-
level) ^ ((1 << size) - 1);
1123 uni_code<<=
size; uni_code|=l;
1126 uni_code<<=1; uni_code|=1;
1138 uni_code<<=
size; uni_code|=l;
1141 uni_code<<=1; uni_code|=1;
1154 int slevel,
run, last;
1159 for(slevel=-64; slevel<64; slevel++){
1160 if(slevel==0)
continue;
1161 for(run=0; run<64; run++){
1162 for(last=0; last<=1; last++){
1164 int level= slevel < 0 ? -slevel : slevel;
1165 int sign= slevel < 0 ? 1 : 0;
1169 len_tab[
index]= 100;
1175 bits=bits*2+sign; len++;
1177 if(code!=rl->
n && len < len_tab[index]){
1191 bits=bits*2+sign; len++;
1193 if(code!=rl->
n && len < len_tab[index]){
1201 bits=bits*4+2; len+=2;
1208 bits=bits*2+sign; len++;
1210 if(code!=rl->
n && len < len_tab[index]){
1218 bits=bits*4+3; len+=2;
1219 bits=bits*2+last; len++;
1220 bits=bits*64+
run; len+=6;
1221 bits=bits*2+1; len++;
1222 bits=bits*4096+(slevel&0xfff); len+=12;
1223 bits=bits*2+1; len++;
1225 if(len < len_tab[index]){
1238 static int done = 0;
1240 if (avctx->
width >= (1<<13) || avctx->
height >= (1<<13)) {
1291 int pb_size = (((intptr_t)start + size/3)&(~3)) - (intptr_t)start;
1292 int tex_size= (size - 2*pb_size)&(~3);
1338 #define OFFSET(x) offsetof(MpegEncContext, x)
1339 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1341 {
"data_partitioning",
"Use data partitioning.",
OFFSET(data_partitioning),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1,
VE },
1342 {
"alternate_scan",
"Enable alternate scantable.",
OFFSET(alternate_scan),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1,
VE },
#define FF_COMPLIANCE_VERY_STRICT
Strictly conform to an older more strict version of the spec or reference software.
static void mpeg4_encode_visual_object_header(MpegEncContext *s)
ScanTable intra_v_scantable
RLTable ff_mpeg4_rl_intra
const uint8_t ff_mpeg4_c_dc_scale_table[32]
int time_increment_bits
number of bits to represent the fractional part of time
#define MV_TYPE_FIELD
2 vectors, one per field
static uint8_t uni_mpeg4_intra_rl_len[64 *64 *2 *2]
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
static void mpeg4_encode_block(MpegEncContext *s, int16_t *block, int n, int intra_dc, uint8_t *scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb)
Encode an 8x8 block.
int last_mv[2][2][2]
last MV, used for MV prediction in MPEG1 & B-frame MPEG4
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
#define LIBAVUTIL_VERSION_INT
#define CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
static av_cold int init(AVCodecContext *avctx)
#define CANDIDATE_MB_TYPE_BIDIR
int16_t(*[3] ac_val)[16]
used for mpeg4 AC prediction, all 3 arrays must be continuous
static int get_block_rate(MpegEncContext *s, int16_t block[64], int block_last_index, uint8_t scantable[64])
Return the number of bits that encoding the 8x8 block in block would need.
int ff_MPV_encode_end(AVCodecContext *avctx)
const uint8_t ff_h263_intra_MCBPC_code[9]
#define FF_MPV_COMMON_OPTS
const uint8_t ff_h263_cbpy_tab[16][2]
static void skip_put_bits(PutBitContext *s, int n)
Skip the given number of bits.
void avpriv_copy_bits(PutBitContext *pb, const uint8_t *src, int length)
Copy the content of src to the bitstream.
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
int min_qcoeff
minimum encodable coefficient
static uint32_t uni_mpeg4_intra_rl_bits[64 *64 *2 *2]
int mpv_flags
flags set by private options
uint8_t * intra_ac_vlc_length
#define UNI_AC_ENC_INDEX(run, level)
int mb_num
number of MBs of a picture
int time_base
time in seconds of last I,P,S Frame
int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)
static av_cold void init_uni_dc_tab(void)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
void ff_mpeg4_merge_partitions(MpegEncContext *s)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
if((e=av_dict_get(options,"", NULL, AV_DICT_IGNORE_SUFFIX)))
#define FF_MPV_FLAG_CBP_RD
static uint8_t uni_DCtab_chrom_len[512]
int8_t * max_run[2]
encoding & decoding
int64_t time
time of current frame
#define MV_DIRECT
bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4) ...
const char * av_default_item_name(void *ctx)
Return the context name.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
PutBitContext pb2
used for data partitioned VOPs
const uint8_t ff_h263_intra_MCBPC_bits[9]
#define CODEC_FLAG_GLOBAL_HEADER
Place global headers in extradata instead of every keyframe.
static const uint8_t offset[511][2]
static av_cold int end(AVCodecContext *avctx)
static int decide_ac_pred(MpegEncContext *s, int16_t block[6][64], const int dir[6], uint8_t *st[6], int zigzag_last_index[6])
Return the optimal value (0 or 1) for the ac_pred element for the given MB in mpeg4.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
int misc_bits
cbp, mb_type
const char * name
Name of the codec implementation.
int no_rounding
apply no rounding to motion compensation (MPEG4, msmpeg4, ...) for b-frames rounding mode is always 0...
const uint8_t ff_h263_inter_MCBPC_bits[28]
int resync_marker
could this stream contain resync markers
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s)
Picture current_picture
copy of the current picture structure.
const uint8_t ff_mpeg4_DCtab_chrom[13][2]
int8_t * max_level[2]
encoding & decoding
void ff_mpeg4_encode_picture_header(MpegEncContext *s, int picture_number)
uint8_t idct_permutation[64]
idct input permutation.
int flags2
AVCodecContext.flags2.
#define CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
int max_qcoeff
maximum encodable coefficient
#define CODEC_FLAG_AC_PRED
H.263 advanced intra coding / MPEG-4 AC prediction.
const OptionDef options[]
static const int dquant_code[5]
static uint32_t uni_mpeg4_inter_rl_bits[64 *64 *2 *2]
static int ff_mpeg4_pred_dc(MpegEncContext *s, int n, int level, int *dir_ptr, int encoding)
Predict the dc.
int dquant
qscale difference to prev qscale
#define UNI_MPEG4_ENC_INDEX(last, run, level)
int ff_MPV_encode_init(AVCodecContext *avctx)
static void mpeg4_encode_gop_header(MpegEncContext *s)
static int get_bits_diff(MpegEncContext *s)
#define FF_ASPECT_EXTENDED
#define CANDIDATE_MB_TYPE_DIRECT
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static uint8_t * put_bits_ptr(PutBitContext *s)
Return the pointer to the byte where the bitstream writer will put the next bit.
static void restore_ac_coeffs(MpegEncContext *s, int16_t block[6][64], const int dir[6], uint8_t *st[6], const int zigzag_last_index[6])
Restore the ac coefficients in block that have been changed by decide_ac_pred().
uint8_t * inter_ac_vlc_last_length
int mb_skipped
MUST BE SET only during DECODING.
#define CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
int strict_std_compliance
strictly follow the std (MPEG4, ...)
int partitioned_frame
is current frame partitioned
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void ff_mpeg4_init_direct_mv(MpegEncContext *s)
int quarter_sample
1->qpel, 0->half pel ME/MC
uint16_t * mb_type
Table for candidate MB types for encoding.
av_const int ff_h263_aspect_to_info(AVRational aspect)
Return the 4 bit value that specifies the given aspect ratio.
int low_delay
no reordering needed / has no b-frames
static av_cold void init_uni_mpeg4_rl_tab(RLTable *rl, uint32_t *bits_tab, uint8_t *len_tab)
AVPixelFormat
Pixel format.
static int put_bits_count(PutBitContext *s)
void ff_clean_h263_qscales(MpegEncContext *s)
modify qscale so that encoding is actually possible in h263 (limit difference to -2..2)
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
uint8_t * intra_ac_vlc_last_length
#define ADV_SIMPLE_VO_TYPE
const uint8_t ff_mpeg4_DCtab_lum[13][2]
uint8_t ff_mpeg4_static_rl_table_store[3][2][2 *MAX_RUN+MAX_LEVEL+3]
int n
number of entries of table_vlc minus 1
enum AVPictureType pict_type
Picture type of the frame.
const uint8_t ff_mpeg4_y_dc_scale_table[32]
void ff_clean_mpeg4_qscales(MpegEncContext *s)
modify mb_type & qscale so that encoding is actually possible in mpeg4
const uint16_t(* table_vlc)[2]
Picture new_picture
copy of the source picture structure for encoding.
uint16_t * intra_matrix
custom intra quantization matrix
static uint8_t uni_mpeg4_inter_rl_len[64 *64 *2 *2]
int width
picture width / height.
int16_t(*[2] motion_val)[2]
Picture * current_picture_ptr
pointer to the current picture
void * av_malloc(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static const AVClass mpeg4enc_class
static uint16_t uni_DCtab_lum_bits[512]
static uint16_t uni_DCtab_chrom_bits[512]
static int get_b_cbp(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y, int mb_type)
static uint8_t uni_DCtab_lum_len[512]
int block_last_index[12]
last non zero coefficient in block
#define FF_PROFILE_UNKNOWN
const uint8_t ff_h263_inter_MCBPC_code[28]
int ac_esc_length
num of bits needed to encode the longest esc
static void set_put_bits_buffer_size(PutBitContext *s, int size)
Change the end of the buffer.
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 * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
#define MV_TYPE_16X16
1 vector for the whole mb
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
uint8_t * luma_dc_vlc_length
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
ptrdiff_t linesize
line size, in bytes, may be different from width
main external API structure.
static void close(AVCodecParserContext *s)
ScanTable intra_scantable
int height
picture size. must be a multiple of 16
int data_partitioning
data partitioning flag from header
uint8_t * inter_ac_vlc_length
Describe the class of an AVClass context structure.
ScanTable intra_h_scantable
static av_cold int encode_init(AVCodecContext *avctx)
static int mpeg4_get_block_length(MpegEncContext *s, int16_t *block, int n, int intra_dc, uint8_t *scan_table)
static void ff_h263_encode_motion_vector(MpegEncContext *s, int x, int y, int f_code)
void ff_set_mpeg4_time(MpegEncContext *s)
DSPContext dsp
pointers for accelerated dsp functions
int f_code
forward MV resolution
#define CODEC_FLAG_CLOSED_GOP
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, ...
#define ROUNDED_DIV(a, b)
int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s)
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
int mv[2][4][2]
motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend...
struct AVCodecContext * avctx
PutBitContext pb
bit output
#define VISUAL_OBJ_STARTCODE
#define CONFIG_MPEG4_ENCODER
#define CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
#define CODEC_FLAG2_NO_OUTPUT
Skip bitstream encoding.
void(* clear_block)(int16_t *block)
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
static int get_rl_index(const RLTable *rl, int last, int run, int level)
void ff_mpeg4_stuffing(PutBitContext *pbc)
add mpeg4 stuffing bits (01...1)
int last_bits
temp var used for calculating the above vars
void ff_mpeg4_init_partitions(MpegEncContext *s)
int top_field_first
If the content is interlaced, is top field displayed first.
av_cold void ff_init_rl(RLTable *rl, uint8_t static_store[2][2 *MAX_RUN+MAX_LEVEL+3])
int16_t(* block)[64]
points to one of the following blocks
PutBitContext tex_pb
used for data partitioned VOPs
Picture next_picture
copy of the next picture structure.
uint16_t * inter_matrix
custom inter quantization matrix
static int get_p_cbp(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
Picture ** reordered_input_picture
pointer to the next pictures in codedorder for encoding
void avpriv_put_string(PutBitContext *pb, const char *string, int terminate_string)
Put the string string in the bitstream.
int flags
AVCodecContext.flags (HQ, MV4, ...)
void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static int mpeg4_get_dc_length(int level, int n)
static void mpeg4_encode_blocks(MpegEncContext *s, int16_t block[6][64], int intra_dc[6], uint8_t **scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb)
#define MV_TYPE_8X8
4 vectors (h263, mpeg4 4MV)
int b_code
backward MV resolution for B Frames (mpeg4)
static void mpeg4_encode_dc(PutBitContext *s, int level, int n)
Encode the dc value.
static void mpeg4_encode_vol_header(MpegEncContext *s, int vo_number, int vol_number)
int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt, AVFrame *frame, int *got_packet)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
#define FF_BUG_MS
Work around various bugs in Microsoft's broken decoders.