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split mpeg12 encoder out of mpeg12.c

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Originally committed as revision 9477 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2007-07-05 09:08:28 +00:00
parent a7738a044d
commit a6bc573158
7 changed files with 1481 additions and 1367 deletions
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4
libavcodec/Makefile
View File

@ -18,7 +18,7 @@ OBJS= bitstream.o \
dsputil.o \
motion_est.o \
imgconvert.o \
mpeg12.o \
mpeg12.o mpeg12data.o \
simple_idct.o \
ratecontrol.o \
eval.o \
@ -111,6 +111,8 @@ OBJS-$(CONFIG_MP3_DECODER) += mpegaudiodec.o mpegaudiodecheader.o mp
OBJS-$(CONFIG_MP3ADU_DECODER) += mpegaudiodec.o mpegaudiodecheader.o mpegaudio.o mpegaudiodata.o
OBJS-$(CONFIG_MP3ON4_DECODER) += mpegaudiodec.o mpegaudiodecheader.o mpegaudio.o mpegaudiodata.o
OBJS-$(CONFIG_MPC7_DECODER) += mpc.o mpegaudiodec.o mpegaudiodecheader.o mpegaudio.o mpegaudiodata.o
OBJS-$(CONFIG_MPEG1VIDEO_ENCODER) += mpeg12enc.o mpeg12data.o
OBJS-$(CONFIG_MPEG2VIDEO_ENCODER) += mpeg12enc.o mpeg12data.o
OBJS-$(CONFIG_MSMPEG4V1_DECODER) += msmpeg4.o msmpeg4data.o
OBJS-$(CONFIG_MSMPEG4V1_ENCODER) += msmpeg4.o msmpeg4data.o
OBJS-$(CONFIG_MSMPEG4V2_DECODER) += msmpeg4.o msmpeg4data.o

927
libavcodec/mpeg12.c
View File

@ -1,5 +1,5 @@
/*
* MPEG1 codec / MPEG2 decoder
* MPEG1/2 decoder
* Copyright (c) 2000,2001 Fabrice Bellard.
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
@ -22,7 +22,7 @@
/**
* @file mpeg12.c
* MPEG1/2 codec
* MPEG1/2 decoder
*/
//#define DEBUG
@ -30,7 +30,9 @@
#include "dsputil.h"
#include "mpegvideo.h"
#include "mpeg12.h"
#include "mpeg12data.h"
#include "mpeg12decdata.h"
#include "bytestream.h"
//#undef NDEBUG
@ -45,12 +47,6 @@
#define MB_BTYPE_VLC_BITS 6
#define TEX_VLC_BITS 9
#ifdef CONFIG_ENCODERS
static void mpeg1_encode_block(MpegEncContext *s,
DCTELEM *block,
int component);
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code); // RAL: f_code parameter added
#endif //CONFIG_ENCODERS
static inline int mpeg1_decode_block_inter(MpegEncContext *s,
DCTELEM *block,
int n);
@ -81,22 +77,8 @@ static const enum PixelFormat pixfmt_xvmc_mpg2_420[] = {
PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_XVMC_MPEG2_MC,
-1};
#ifdef CONFIG_ENCODERS
static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
static uint8_t fcode_tab[MAX_MV*2+1];
static uint8_t uni_mpeg1_ac_vlc_len [64*64*2];
static uint8_t uni_mpeg2_ac_vlc_len [64*64*2];
/* simple include everything table for dc, first byte is bits number next 3 are code*/
static uint32_t mpeg1_lum_dc_uni[512];
static uint32_t mpeg1_chr_dc_uni[512];
static uint8_t mpeg1_index_run[2][64];
static int8_t mpeg1_max_level[2][64];
#endif //CONFIG_ENCODERS
static uint8_t static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
uint8_t static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
static void init_2d_vlc_rl(RLTable *rl, int use_static)
{
@ -140,260 +122,7 @@ static void init_2d_vlc_rl(RLTable *rl, int use_static)
}
}
#ifdef CONFIG_ENCODERS
static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){
int i;
for(i=0; i<128; i++){
int level= i-64;
int run;
for(run=0; run<64; run++){
int len, bits, code;
int alevel= FFABS(level);
int sign= (level>>31)&1;
if (alevel > rl->max_level[0][run])
code= 111; /*rl->n*/
else
code= rl->index_run[0][run] + alevel - 1;
if (code < 111 /* rl->n */) {
/* store the vlc & sign at once */
len= rl->table_vlc[code][1]+1;
bits= (rl->table_vlc[code][0]<<1) + sign;
} else {
len= rl->table_vlc[111/*rl->n*/][1]+6;
bits= rl->table_vlc[111/*rl->n*/][0]<<6;
bits|= run;
if (alevel < 128) {
bits<<=8; len+=8;
bits|= level & 0xff;
} else {
bits<<=16; len+=16;
bits|= level & 0xff;
if (level < 0) {
bits|= 0x8001 + level + 255;
} else {
bits|= level & 0xffff;
}
}
}
uni_ac_vlc_len [UNI_AC_ENC_INDEX(run, i)]= len;
}
}
}
static int find_frame_rate_index(MpegEncContext *s){
int i;
int64_t dmin= INT64_MAX;
int64_t d;
for(i=1;i<14;i++) {
int64_t n0= 1001LL/ff_frame_rate_tab[i].den*ff_frame_rate_tab[i].num*s->avctx->time_base.num;
int64_t n1= 1001LL*s->avctx->time_base.den;
if(s->avctx->strict_std_compliance > FF_COMPLIANCE_INOFFICIAL && i>=9) break;
d = FFABS(n0 - n1);
if(d < dmin){
dmin=d;
s->frame_rate_index= i;
}
}
if(dmin)
return -1;
else
return 0;
}
static int encode_init(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
if(MPV_encode_init(avctx) < 0)
return -1;
if(find_frame_rate_index(s) < 0){
if(s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n", avctx->time_base.den, avctx->time_base.num);
return -1;
}else{
av_log(avctx, AV_LOG_INFO, "MPEG1/2 does not support %d/%d fps, there may be AV sync issues\n", avctx->time_base.den, avctx->time_base.num);
}
}
if(avctx->profile == FF_PROFILE_UNKNOWN){
if(avctx->level != FF_LEVEL_UNKNOWN){
av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
return -1;
}
avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0; /* Main or 4:2:2 */
}
if(avctx->level == FF_LEVEL_UNKNOWN){
if(avctx->profile == 0){ /* 4:2:2 */
if(avctx->width <= 720 && avctx->height <= 608) avctx->level = 5; /* Main */
else avctx->level = 2; /* High */
}else{
if(avctx->profile != 1 && s->chroma_format != CHROMA_420){
av_log(avctx, AV_LOG_ERROR, "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
return -1;
}
if(avctx->width <= 720 && avctx->height <= 576) avctx->level = 8; /* Main */
else if(avctx->width <= 1440) avctx->level = 6; /* High 1440 */
else avctx->level = 4; /* High */
}
}
if((avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) && s->frame_rate_index != 4){
av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n");
return -1;
}
return 0;
}
static void put_header(MpegEncContext *s, int header)
{
align_put_bits(&s->pb);
put_bits(&s->pb, 16, header>>16);
put_bits(&s->pb, 16, header&0xFFFF);
}
/* put sequence header if needed */
static void mpeg1_encode_sequence_header(MpegEncContext *s)
{
unsigned int vbv_buffer_size;
unsigned int fps, v;
int i;
uint64_t time_code;
float best_aspect_error= 1E10;
float aspect_ratio= av_q2d(s->avctx->sample_aspect_ratio);
int constraint_parameter_flag;
if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA)
if (s->current_picture.key_frame) {
AVRational framerate= ff_frame_rate_tab[s->frame_rate_index];
/* mpeg1 header repeated every gop */
put_header(s, SEQ_START_CODE);
put_bits(&s->pb, 12, s->width);
put_bits(&s->pb, 12, s->height);
for(i=1; i<15; i++){
float error= aspect_ratio;
if(s->codec_id == CODEC_ID_MPEG1VIDEO || i <=1)
error-= 1.0/mpeg1_aspect[i];
else
error-= av_q2d(mpeg2_aspect[i])*s->height/s->width;
error= FFABS(error);
if(error < best_aspect_error){
best_aspect_error= error;
s->aspect_ratio_info= i;
}
}
put_bits(&s->pb, 4, s->aspect_ratio_info);
put_bits(&s->pb, 4, s->frame_rate_index);
if(s->avctx->rc_max_rate){
v = (s->avctx->rc_max_rate + 399) / 400;
if (v > 0x3ffff && s->codec_id == CODEC_ID_MPEG1VIDEO)
v = 0x3ffff;
}else{
v= 0x3FFFF;
}
if(s->avctx->rc_buffer_size)
vbv_buffer_size = s->avctx->rc_buffer_size;
else
/* VBV calculation: Scaled so that a VCD has the proper VBV size of 40 kilobytes */
vbv_buffer_size = (( 20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
vbv_buffer_size= (vbv_buffer_size + 16383) / 16384;
put_bits(&s->pb, 18, v & 0x3FFFF);
put_bits(&s->pb, 1, 1); /* marker */
put_bits(&s->pb, 10, vbv_buffer_size & 0x3FF);
constraint_parameter_flag=
s->width <= 768 && s->height <= 576 &&
s->mb_width * s->mb_height <= 396 &&
s->mb_width * s->mb_height * framerate.num <= framerate.den*396*25 &&
framerate.num <= framerate.den*30 &&
s->avctx->me_range && s->avctx->me_range < 128 &&
vbv_buffer_size <= 20 &&
v <= 1856000/400 &&
s->codec_id == CODEC_ID_MPEG1VIDEO;
put_bits(&s->pb, 1, constraint_parameter_flag);
ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
if(s->codec_id == CODEC_ID_MPEG2VIDEO){
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 1); //seq ext
put_bits(&s->pb, 1, s->avctx->profile == 0); //escx 1 for 4:2:2 profile */
put_bits(&s->pb, 3, s->avctx->profile); //profile
put_bits(&s->pb, 4, s->avctx->level); //level
put_bits(&s->pb, 1, s->progressive_sequence);
put_bits(&s->pb, 2, s->chroma_format);
put_bits(&s->pb, 2, 0); //horizontal size ext
put_bits(&s->pb, 2, 0); //vertical size ext
put_bits(&s->pb, 12, v>>18); //bitrate ext
put_bits(&s->pb, 1, 1); //marker
put_bits(&s->pb, 8, vbv_buffer_size >>10); //vbv buffer ext
put_bits(&s->pb, 1, s->low_delay);
put_bits(&s->pb, 2, 0); // frame_rate_ext_n
put_bits(&s->pb, 5, 0); // frame_rate_ext_d
}
put_header(s, GOP_START_CODE);
put_bits(&s->pb, 1, !!(s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE)); /* drop frame flag */
/* time code : we must convert from the real frame rate to a
fake mpeg frame rate in case of low frame rate */
fps = (framerate.num + framerate.den/2)/ framerate.den;
time_code = s->current_picture_ptr->coded_picture_number + s->avctx->timecode_frame_start;
s->gop_picture_number = s->current_picture_ptr->coded_picture_number;
if (s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) {
/* only works for NTSC 29.97 */
int d = time_code / 17982;
int m = time_code % 17982;
//if (m < 2) m += 2; /* not needed since -2,-1 / 1798 in C returns 0 */
time_code += 18 * d + 2 * ((m - 2) / 1798);
}
put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
put_bits(&s->pb, 6, (uint32_t)((time_code / (fps * 60)) % 60));
put_bits(&s->pb, 1, 1);
put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP));
put_bits(&s->pb, 1, 0); /* broken link */
}
}
static inline void encode_mb_skip_run(MpegEncContext *s, int run){
while (run >= 33) {
put_bits(&s->pb, 11, 0x008);
run -= 33;
}
put_bits(&s->pb, mbAddrIncrTable[run][1],
mbAddrIncrTable[run][0]);
}
#endif //CONFIG_ENCODERS
static void common_init(MpegEncContext *s)
void common_init(MpegEncContext *s)
{
s->y_dc_scale_table=
@ -408,621 +137,6 @@ void ff_mpeg1_clean_buffers(MpegEncContext *s){
memset(s->last_mv, 0, sizeof(s->last_mv));
}
#ifdef CONFIG_ENCODERS
static av_always_inline void put_qscale(MpegEncContext *s)
{
if(s->q_scale_type){
assert(s->qscale>=1 && s->qscale <=12);
put_bits(&s->pb, 5, inv_non_linear_qscale[s->qscale]);
}else{
put_bits(&s->pb, 5, s->qscale);
}
}
void ff_mpeg1_encode_slice_header(MpegEncContext *s){
put_header(s, SLICE_MIN_START_CODE + s->mb_y);
put_qscale(s);
put_bits(&s->pb, 1, 0); /* slice extra information */
}
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
{
mpeg1_encode_sequence_header(s);
/* mpeg1 picture header */
put_header(s, PICTURE_START_CODE);
/* temporal reference */
// RAL: s->picture_number instead of s->fake_picture_number
put_bits(&s->pb, 10, (s->picture_number -
s->gop_picture_number) & 0x3ff);
put_bits(&s->pb, 3, s->pict_type);
s->vbv_delay_ptr= s->pb.buf + put_bits_count(&s->pb)/8;
put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */
// RAL: Forward f_code also needed for B frames
if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if(s->codec_id == CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->f_code); /* forward_f_code */
else
put_bits(&s->pb, 3, 7); /* forward_f_code */
}
// RAL: Backward f_code necessary for B frames
if (s->pict_type == B_TYPE) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if(s->codec_id == CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->b_code); /* backward_f_code */
else
put_bits(&s->pb, 3, 7); /* backward_f_code */
}
put_bits(&s->pb, 1, 0); /* extra bit picture */
s->frame_pred_frame_dct = 1;
if(s->codec_id == CODEC_ID_MPEG2VIDEO){
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 8); //pic ext
if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
put_bits(&s->pb, 4, s->f_code);
put_bits(&s->pb, 4, s->f_code);
}else{
put_bits(&s->pb, 8, 255);
}
if (s->pict_type == B_TYPE) {
put_bits(&s->pb, 4, s->b_code);
put_bits(&s->pb, 4, s->b_code);
}else{
put_bits(&s->pb, 8, 255);
}
put_bits(&s->pb, 2, s->intra_dc_precision);
assert(s->picture_structure == PICT_FRAME);
put_bits(&s->pb, 2, s->picture_structure);
if (s->progressive_sequence) {
put_bits(&s->pb, 1, 0); /* no repeat */
} else {
put_bits(&s->pb, 1, s->current_picture_ptr->top_field_first);
}
/* XXX: optimize the generation of this flag with entropy
measures */
s->frame_pred_frame_dct = s->progressive_sequence;
put_bits(&s->pb, 1, s->frame_pred_frame_dct);
put_bits(&s->pb, 1, s->concealment_motion_vectors);
put_bits(&s->pb, 1, s->q_scale_type);
put_bits(&s->pb, 1, s->intra_vlc_format);
put_bits(&s->pb, 1, s->alternate_scan);
put_bits(&s->pb, 1, s->repeat_first_field);
s->progressive_frame = s->progressive_sequence;
put_bits(&s->pb, 1, s->chroma_format == CHROMA_420 ? s->progressive_frame : 0); /* chroma_420_type */
put_bits(&s->pb, 1, s->progressive_frame);
put_bits(&s->pb, 1, 0); //composite_display_flag
}
if(s->flags & CODEC_FLAG_SVCD_SCAN_OFFSET){
int i;
put_header(s, USER_START_CODE);
for(i=0; i<sizeof(svcd_scan_offset_placeholder); i++){
put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
}
}
s->mb_y=0;
ff_mpeg1_encode_slice_header(s);
}
static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
int has_mv, int field_motion)
{
put_bits(&s->pb, n, bits);
if (!s->frame_pred_frame_dct) {
if (has_mv)
put_bits(&s->pb, 2, 2 - field_motion); /* motion_type: frame/field */
put_bits(&s->pb, 1, s->interlaced_dct);
}
}
static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y,
int mb_block_count)
{
int i, cbp;
const int mb_x = s->mb_x;
const int mb_y = s->mb_y;
const int first_mb= mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
/* compute cbp */
cbp = 0;
for(i=0;i<mb_block_count;i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (mb_block_count - 1 - i);
}
if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
(mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == CODEC_ID_MPEG1VIDEO)) &&
((s->pict_type == P_TYPE && (motion_x | motion_y) == 0) ||
(s->pict_type == B_TYPE && s->mv_dir == s->last_mv_dir && (((s->mv_dir & MV_DIR_FORWARD) ? ((s->mv[0][0][0] - s->last_mv[0][0][0])|(s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
((s->mv_dir & MV_DIR_BACKWARD) ? ((s->mv[1][0][0] - s->last_mv[1][0][0])|(s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
s->mb_skip_run++;
s->qscale -= s->dquant;
s->skip_count++;
s->misc_bits++;
s->last_bits++;
if(s->pict_type == P_TYPE){
s->last_mv[0][1][0]= s->last_mv[0][0][0]=
s->last_mv[0][1][1]= s->last_mv[0][0][1]= 0;
}
} else {
if(first_mb){
assert(s->mb_skip_run == 0);
encode_mb_skip_run(s, s->mb_x);
}else{
encode_mb_skip_run(s, s->mb_skip_run);
}
if (s->pict_type == I_TYPE) {
if(s->dquant && cbp){
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 0, 0); /* macroblock_type : macroblock_quant = 0 */
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->i_count++;
} else if (s->mb_intra) {
if(s->dquant && cbp){
put_mb_modes(s, 6, 0x01, 0, 0);
put_qscale(s);
}else{
put_mb_modes(s, 5, 0x03, 0, 0);
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->i_count++;
memset(s->last_mv, 0, sizeof(s->last_mv));
} else if (s->pict_type == P_TYPE) {
if(s->mv_type == MV_TYPE_16X16){
if (cbp != 0) {
if ((motion_x|motion_y) == 0) {
if(s->dquant){
put_mb_modes(s, 5, 1, 0, 0); /* macroblock_pattern & quant */
put_qscale(s);
}else{
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_pattern only */
}
s->misc_bits+= get_bits_diff(s);
} else {
if(s->dquant){
put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 1, 0); /* motion + cbp */
}
s->misc_bits+= get_bits_diff(s);
mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code); // RAL: f_code parameter added
mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code); // RAL: f_code parameter added
s->mv_bits+= get_bits_diff(s);
}
} else {
put_bits(&s->pb, 3, 1); /* motion only */
if (!s->frame_pred_frame_dct)
put_bits(&s->pb, 2, 2); /* motion_type: frame */
s->misc_bits+= get_bits_diff(s);
mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code); // RAL: f_code parameter added
mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code); // RAL: f_code parameter added
s->qscale -= s->dquant;
s->mv_bits+= get_bits_diff(s);
}
s->last_mv[0][1][0]= s->last_mv[0][0][0]= motion_x;
s->last_mv[0][1][1]= s->last_mv[0][0][1]= motion_y;
}else{
assert(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
if (cbp) {
if(s->dquant){
put_mb_modes(s, 5, 2, 1, 1); /* motion + cbp */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 1, 1); /* motion + cbp */
}
} else {
put_bits(&s->pb, 3, 1); /* motion only */
put_bits(&s->pb, 2, 1); /* motion_type: field */
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[0][i]);
mpeg1_encode_motion(s, s->mv[0][i][0] - s->last_mv[0][i][0] , s->f_code);
mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
s->last_mv[0][i][0]= s->mv[0][i][0];
s->last_mv[0][i][1]= 2*s->mv[0][i][1];
}
s->mv_bits+= get_bits_diff(s);
}
if(cbp) {
if (s->chroma_y_shift) {
put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
} else {
put_bits(&s->pb, mbPatTable[cbp>>2][1], mbPatTable[cbp>>2][0]);
put_bits(&s->pb, 2, cbp & 3);
}
}
s->f_count++;
} else{
static const int mb_type_len[4]={0,3,4,2}; //bak,for,bi
if(s->mv_type == MV_TYPE_16X16){
if (cbp){ // With coded bloc pattern
if (s->dquant) {
if(s->mv_dir == MV_DIR_FORWARD)
put_mb_modes(s, 6, 3, 1, 0);
else
put_mb_modes(s, mb_type_len[s->mv_dir]+3, 2, 1, 0);
put_qscale(s);
} else {
put_mb_modes(s, mb_type_len[s->mv_dir], 3, 1, 0);
}
}else{ // No coded bloc pattern
put_bits(&s->pb, mb_type_len[s->mv_dir], 2);
if (!s->frame_pred_frame_dct)
put_bits(&s->pb, 2, 2); /* motion_type: frame */
s->qscale -= s->dquant;
}
s->misc_bits += get_bits_diff(s);
if (s->mv_dir&MV_DIR_FORWARD){
mpeg1_encode_motion(s, s->mv[0][0][0] - s->last_mv[0][0][0], s->f_code);
mpeg1_encode_motion(s, s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
s->last_mv[0][0][0]=s->last_mv[0][1][0]= s->mv[0][0][0];
s->last_mv[0][0][1]=s->last_mv[0][1][1]= s->mv[0][0][1];
s->f_count++;
}
if (s->mv_dir&MV_DIR_BACKWARD){
mpeg1_encode_motion(s, s->mv[1][0][0] - s->last_mv[1][0][0], s->b_code);
mpeg1_encode_motion(s, s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
s->last_mv[1][0][0]=s->last_mv[1][1][0]= s->mv[1][0][0];
s->last_mv[1][0][1]=s->last_mv[1][1][1]= s->mv[1][0][1];
s->b_count++;
}
}else{
assert(s->mv_type == MV_TYPE_FIELD);
assert(!s->frame_pred_frame_dct);
if (cbp){ // With coded bloc pattern
if (s->dquant) {
if(s->mv_dir == MV_DIR_FORWARD)
put_mb_modes(s, 6, 3, 1, 1);
else
put_mb_modes(s, mb_type_len[s->mv_dir]+3, 2, 1, 1);
put_qscale(s);
} else {
put_mb_modes(s, mb_type_len[s->mv_dir], 3, 1, 1);
}
}else{ // No coded bloc pattern
put_bits(&s->pb, mb_type_len[s->mv_dir], 2);
put_bits(&s->pb, 2, 1); /* motion_type: field */
s->qscale -= s->dquant;
}
s->misc_bits += get_bits_diff(s);
if (s->mv_dir&MV_DIR_FORWARD){
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[0][i]);
mpeg1_encode_motion(s, s->mv[0][i][0] - s->last_mv[0][i][0] , s->f_code);
mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
s->last_mv[0][i][0]= s->mv[0][i][0];
s->last_mv[0][i][1]= 2*s->mv[0][i][1];
}
s->f_count++;
}
if (s->mv_dir&MV_DIR_BACKWARD){
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[1][i]);
mpeg1_encode_motion(s, s->mv[1][i][0] - s->last_mv[1][i][0] , s->b_code);
mpeg1_encode_motion(s, s->mv[1][i][1] - (s->last_mv[1][i][1]>>1), s->b_code);
s->last_mv[1][i][0]= s->mv[1][i][0];
s->last_mv[1][i][1]= 2*s->mv[1][i][1];
}
s->b_count++;
}
}
s->mv_bits += get_bits_diff(s);
if(cbp) {
if (s->chroma_y_shift) {
put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
} else {
put_bits(&s->pb, mbPatTable[cbp>>2][1], mbPatTable[cbp>>2][0]);
put_bits(&s->pb, 2, cbp & 3);
}
}
}
for(i=0;i<mb_block_count;i++) {
if (cbp & (1 << (mb_block_count - 1 - i))) {
mpeg1_encode_block(s, block[i], i);
}
}
s->mb_skip_run = 0;
if(s->mb_intra)
s->i_tex_bits+= get_bits_diff(s);
else
s->p_tex_bits+= get_bits_diff(s);
}
}
void mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
{
if (s->chroma_format == CHROMA_420) mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
else mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
}
// RAL: Parameter added: f_or_b_code
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
{
int code, bit_size, l, bits, range, sign;
if (val == 0) {
/* zero vector */
code = 0;
put_bits(&s->pb,
mbMotionVectorTable[0][1],
mbMotionVectorTable[0][0]);
} else {
bit_size = f_or_b_code - 1;
range = 1 << bit_size;
/* modulo encoding */
l= INT_BIT - 5 - bit_size;
val= (val<<l)>>l;
if (val >= 0) {
val--;
code = (val >> bit_size) + 1;
bits = val & (range - 1);
sign = 0;
} else {
val = -val;
val--;
code = (val >> bit_size) + 1;
bits = val & (range - 1);
sign = 1;
}
assert(code > 0 && code <= 16);
put_bits(&s->pb,
mbMotionVectorTable[code][1],
mbMotionVectorTable[code][0]);
put_bits(&s->pb, 1, sign);
if (bit_size > 0) {
put_bits(&s->pb, bit_size, bits);
}
}
}
void ff_mpeg1_encode_init(MpegEncContext *s)
{
static int done=0;
common_init(s);
if(!done){
int f_code;
int mv;
int i;
done=1;
init_rl(&rl_mpeg1, static_rl_table_store[0]);
init_rl(&rl_mpeg2, static_rl_table_store[1]);
for(i=0; i<64; i++)
{
mpeg1_max_level[0][i]= rl_mpeg1.max_level[0][i];
mpeg1_index_run[0][i]= rl_mpeg1.index_run[0][i];
}
init_uni_ac_vlc(&rl_mpeg1, uni_mpeg1_ac_vlc_len);
if(s->intra_vlc_format)
init_uni_ac_vlc(&rl_mpeg2, uni_mpeg2_ac_vlc_len);
/* build unified dc encoding tables */
for(i=-255; i<256; i++)
{
int adiff, index;
int bits, code;
int diff=i;
adiff = FFABS(diff);
if(diff<0) diff--;
index = av_log2(2*adiff);
bits= vlc_dc_lum_bits[index] + index;
code= (vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1));
mpeg1_lum_dc_uni[i+255]= bits + (code<<8);
bits= vlc_dc_chroma_bits[index] + index;
code= (vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1));
mpeg1_chr_dc_uni[i+255]= bits + (code<<8);
}
for(f_code=1; f_code<=MAX_FCODE; f_code++){
for(mv=-MAX_MV; mv<=MAX_MV; mv++){
int len;
if(mv==0) len= mbMotionVectorTable[0][1];
else{
int val, bit_size, range, code;
bit_size = f_code - 1;
range = 1 << bit_size;
val=mv;
if (val < 0)
val = -val;
val--;
code = (val >> bit_size) + 1;
if(code<17){
len= mbMotionVectorTable[code][1] + 1 + bit_size;
}else{
len= mbMotionVectorTable[16][1] + 2 + bit_size;
}
}
mv_penalty[f_code][mv+MAX_MV]= len;
}
}
for(f_code=MAX_FCODE; f_code>0; f_code--){
for(mv=-(8<<f_code); mv<(8<<f_code); mv++){
fcode_tab[mv+MAX_MV]= f_code;
}
}
}
s->me.mv_penalty= mv_penalty;
s->fcode_tab= fcode_tab;
if(s->codec_id == CODEC_ID_MPEG1VIDEO){
s->min_qcoeff=-255;
s->max_qcoeff= 255;
}else{
s->min_qcoeff=-2047;
s->max_qcoeff= 2047;
}
if (s->intra_vlc_format) {
s->intra_ac_vlc_length=
s->intra_ac_vlc_last_length= uni_mpeg2_ac_vlc_len;
} else {
s->intra_ac_vlc_length=
s->intra_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
}
s->inter_ac_vlc_length=
s->inter_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
}
static inline void encode_dc(MpegEncContext *s, int diff, int component)
{
if(((unsigned) (diff+255)) >= 511){
int index;
if(diff<0){
index= av_log2_16bit(-2*diff);
diff--;
}else{
index= av_log2_16bit(2*diff);
}
if (component == 0) {
put_bits(
&s->pb,
vlc_dc_lum_bits[index] + index,
(vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1)));
}else{
put_bits(
&s->pb,
vlc_dc_chroma_bits[index] + index,
(vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1)));
}
}else{
if (component == 0) {
put_bits(
&s->pb,
mpeg1_lum_dc_uni[diff+255]&0xFF,
mpeg1_lum_dc_uni[diff+255]>>8);
} else {
put_bits(
&s->pb,
mpeg1_chr_dc_uni[diff+255]&0xFF,
mpeg1_chr_dc_uni[diff+255]>>8);
}
}
}
static void mpeg1_encode_block(MpegEncContext *s,
DCTELEM *block,
int n)
{
int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
int code, component;
const uint16_t (*table_vlc)[2] = rl_mpeg1.table_vlc;
last_index = s->block_last_index[n];
/* DC coef */
if (s->mb_intra) {
component = (n <= 3 ? 0 : (n&1) + 1);
dc = block[0]; /* overflow is impossible */
diff = dc - s->last_dc[component];
encode_dc(s, diff, component);
s->last_dc[component] = dc;
i = 1;
if (s->intra_vlc_format)
table_vlc = rl_mpeg2.table_vlc;
} else {
/* encode the first coefficient : needs to be done here because
it is handled slightly differently */
level = block[0];
if (abs(level) == 1) {
code = ((uint32_t)level >> 31); /* the sign bit */
put_bits(&s->pb, 2, code | 0x02);
i = 1;
} else {
i = 0;
last_non_zero = -1;
goto next_coef;
}
}
/* now quantify & encode AC coefs */
last_non_zero = i - 1;
for(;i<=last_index;i++) {
j = s->intra_scantable.permutated[i];
level = block[j];
next_coef:
#if 0
if (level != 0)
dprintf(s->avctx, "level[%d]=%d\n", i, level);
#endif
/* encode using VLC */
if (level != 0) {
run = i - last_non_zero - 1;
alevel= level;
MASK_ABS(sign, alevel)
sign&=1;
if (alevel <= mpeg1_max_level[0][run]){
code= mpeg1_index_run[0][run] + alevel - 1;
/* store the vlc & sign at once */
put_bits(&s->pb, table_vlc[code][1]+1, (table_vlc[code][0]<<1) + sign);
} else {
/* escape seems to be pretty rare <5% so I do not optimize it */
put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
/* escape: only clip in this case */
put_bits(&s->pb, 6, run);
if(s->codec_id == CODEC_ID_MPEG1VIDEO){
if (alevel < 128) {
put_bits(&s->pb, 8, level & 0xff);
} else {
if (level < 0) {
put_bits(&s->pb, 16, 0x8001 + level + 255);
} else {
put_bits(&s->pb, 16, level & 0xffff);
}
}
}else{
put_bits(&s->pb, 12, level & 0xfff);
}
}
last_non_zero = i;
}
}
/* end of block */
put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
}
#endif //CONFIG_ENCODERS
/******************************************/
/* decoding */
@ -3288,35 +2402,6 @@ AVCodec mpegvideo_decoder = {
.flush= ff_mpeg_flush,
};
#ifdef CONFIG_ENCODERS
AVCodec mpeg1video_encoder = {
"mpeg1video",
CODEC_TYPE_VIDEO,
CODEC_ID_MPEG1VIDEO,
sizeof(MpegEncContext),
encode_init,
MPV_encode_picture,
MPV_encode_end,
.supported_framerates= ff_frame_rate_tab+1,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
.capabilities= CODEC_CAP_DELAY,
};
AVCodec mpeg2video_encoder = {
"mpeg2video",
CODEC_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO,
sizeof(MpegEncContext),
encode_init,
MPV_encode_picture,
MPV_encode_end,
.supported_framerates= ff_frame_rate_tab+1,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, -1},
.capabilities= CODEC_CAP_DELAY,
};
#endif
#ifdef HAVE_XVMC
static int mpeg_mc_decode_init(AVCodecContext *avctx){
Mpeg1Context *s;

374
libavcodec/mpeg12data.c Normal file
View File

@ -0,0 +1,374 @@
/*
* MPEG1/2 tables
* copyright (c) 2000,2001 Fabrice Bellard
* copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file mpeg12data.c
* MPEG1/2 tables.
*/
#include "mpeg12data.h"
const uint16_t ff_mpeg1_default_intra_matrix[64] = {
8, 16, 19, 22, 26, 27, 29, 34,
16, 16, 22, 24, 27, 29, 34, 37,
19, 22, 26, 27, 29, 34, 34, 38,
22, 22, 26, 27, 29, 34, 37, 40,
22, 26, 27, 29, 32, 35, 40, 48,
26, 27, 29, 32, 35, 40, 48, 58,
26, 27, 29, 34, 38, 46, 56, 69,
27, 29, 35, 38, 46, 56, 69, 83
};
const uint16_t ff_mpeg1_default_non_intra_matrix[64] = {
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
};
const uint16_t vlc_dc_lum_code[12] = {
0x4, 0x0, 0x1, 0x5, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe, 0x1ff,
};
const unsigned char vlc_dc_lum_bits[12] = {
3, 2, 2, 3, 3, 4, 5, 6, 7, 8, 9, 9,
};
const uint16_t vlc_dc_chroma_code[12] = {
0x0, 0x1, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe, 0x3fe, 0x3ff,
};
const unsigned char vlc_dc_chroma_bits[12] = {
2, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10,
};
static const uint16_t mpeg1_vlc[113][2] = {
{ 0x3, 2 }, { 0x4, 4 }, { 0x5, 5 }, { 0x6, 7 },
{ 0x26, 8 }, { 0x21, 8 }, { 0xa, 10 }, { 0x1d, 12 },
{ 0x18, 12 }, { 0x13, 12 }, { 0x10, 12 }, { 0x1a, 13 },
{ 0x19, 13 }, { 0x18, 13 }, { 0x17, 13 }, { 0x1f, 14 },
{ 0x1e, 14 }, { 0x1d, 14 }, { 0x1c, 14 }, { 0x1b, 14 },
{ 0x1a, 14 }, { 0x19, 14 }, { 0x18, 14 }, { 0x17, 14 },
{ 0x16, 14 }, { 0x15, 14 }, { 0x14, 14 }, { 0x13, 14 },
{ 0x12, 14 }, { 0x11, 14 }, { 0x10, 14 }, { 0x18, 15 },
{ 0x17, 15 }, { 0x16, 15 }, { 0x15, 15 }, { 0x14, 15 },
{ 0x13, 15 }, { 0x12, 15 }, { 0x11, 15 }, { 0x10, 15 },
{ 0x3, 3 }, { 0x6, 6 }, { 0x25, 8 }, { 0xc, 10 },
{ 0x1b, 12 }, { 0x16, 13 }, { 0x15, 13 }, { 0x1f, 15 },
{ 0x1e, 15 }, { 0x1d, 15 }, { 0x1c, 15 }, { 0x1b, 15 },
{ 0x1a, 15 }, { 0x19, 15 }, { 0x13, 16 }, { 0x12, 16 },
{ 0x11, 16 }, { 0x10, 16 }, { 0x5, 4 }, { 0x4, 7 },
{ 0xb, 10 }, { 0x14, 12 }, { 0x14, 13 }, { 0x7, 5 },
{ 0x24, 8 }, { 0x1c, 12 }, { 0x13, 13 }, { 0x6, 5 },
{ 0xf, 10 }, { 0x12, 12 }, { 0x7, 6 }, { 0x9, 10 },
{ 0x12, 13 }, { 0x5, 6 }, { 0x1e, 12 }, { 0x14, 16 },
{ 0x4, 6 }, { 0x15, 12 }, { 0x7, 7 }, { 0x11, 12 },
{ 0x5, 7 }, { 0x11, 13 }, { 0x27, 8 }, { 0x10, 13 },
{ 0x23, 8 }, { 0x1a, 16 }, { 0x22, 8 }, { 0x19, 16 },
{ 0x20, 8 }, { 0x18, 16 }, { 0xe, 10 }, { 0x17, 16 },
{ 0xd, 10 }, { 0x16, 16 }, { 0x8, 10 }, { 0x15, 16 },
{ 0x1f, 12 }, { 0x1a, 12 }, { 0x19, 12 }, { 0x17, 12 },
{ 0x16, 12 }, { 0x1f, 13 }, { 0x1e, 13 }, { 0x1d, 13 },
{ 0x1c, 13 }, { 0x1b, 13 }, { 0x1f, 16 }, { 0x1e, 16 },
{ 0x1d, 16 }, { 0x1c, 16 }, { 0x1b, 16 },
{ 0x1, 6 }, /* escape */
{ 0x2, 2 }, /* EOB */
};
static const uint16_t mpeg2_vlc[113][2] = {
{0x02, 2}, {0x06, 3}, {0x07, 4}, {0x1c, 5},
{0x1d, 5}, {0x05, 6}, {0x04, 6}, {0x7b, 7},
{0x7c, 7}, {0x23, 8}, {0x22, 8}, {0xfa, 8},
{0xfb, 8}, {0xfe, 8}, {0xff, 8}, {0x1f,14},
{0x1e,14}, {0x1d,14}, {0x1c,14}, {0x1b,14},
{0x1a,14}, {0x19,14}, {0x18,14}, {0x17,14},
{0x16,14}, {0x15,14}, {0x14,14}, {0x13,14},
{0x12,14}, {0x11,14}, {0x10,14}, {0x18,15},
{0x17,15}, {0x16,15}, {0x15,15}, {0x14,15},
{0x13,15}, {0x12,15}, {0x11,15}, {0x10,15},
{0x02, 3}, {0x06, 5}, {0x79, 7}, {0x27, 8},
{0x20, 8}, {0x16,13}, {0x15,13}, {0x1f,15},
{0x1e,15}, {0x1d,15}, {0x1c,15}, {0x1b,15},
{0x1a,15}, {0x19,15}, {0x13,16}, {0x12,16},
{0x11,16}, {0x10,16}, {0x05, 5}, {0x07, 7},
{0xfc, 8}, {0x0c,10}, {0x14,13}, {0x07, 5},
{0x26, 8}, {0x1c,12}, {0x13,13}, {0x06, 6},
{0xfd, 8}, {0x12,12}, {0x07, 6}, {0x04, 9},
{0x12,13}, {0x06, 7}, {0x1e,12}, {0x14,16},
{0x04, 7}, {0x15,12}, {0x05, 7}, {0x11,12},
{0x78, 7}, {0x11,13}, {0x7a, 7}, {0x10,13},
{0x21, 8}, {0x1a,16}, {0x25, 8}, {0x19,16},
{0x24, 8}, {0x18,16}, {0x05, 9}, {0x17,16},
{0x07, 9}, {0x16,16}, {0x0d,10}, {0x15,16},
{0x1f,12}, {0x1a,12}, {0x19,12}, {0x17,12},
{0x16,12}, {0x1f,13}, {0x1e,13}, {0x1d,13},
{0x1c,13}, {0x1b,13}, {0x1f,16}, {0x1e,16},
{0x1d,16}, {0x1c,16}, {0x1b,16},
{0x01,6}, /* escape */
{0x06,4}, /* EOB */
};
static const int8_t mpeg1_level[111] = {
1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40,
1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 1, 2, 3, 4, 5, 1,
2, 3, 4, 1, 2, 3, 1, 2,
3, 1, 2, 3, 1, 2, 1, 2,
1, 2, 1, 2, 1, 2, 1, 2,
1, 2, 1, 2, 1, 2, 1, 2,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1,
};
static const int8_t mpeg1_run[111] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 2, 2, 2, 2, 2, 3,
3, 3, 3, 4, 4, 4, 5, 5,
5, 6, 6, 6, 7, 7, 8, 8,
9, 9, 10, 10, 11, 11, 12, 12,
13, 13, 14, 14, 15, 15, 16, 16,
17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31,
};
RLTable rl_mpeg1 = {
111,
111,
mpeg1_vlc,
mpeg1_run,
mpeg1_level,
};
RLTable rl_mpeg2 = {
111,
111,
mpeg2_vlc,
mpeg1_run,
mpeg1_level,
};
const uint8_t mbAddrIncrTable[36][2] = {
{0x1, 1},
{0x3, 3},
{0x2, 3},
{0x3, 4},
{0x2, 4},
{0x3, 5},
{0x2, 5},
{0x7, 7},
{0x6, 7},
{0xb, 8},
{0xa, 8},
{0x9, 8},
{0x8, 8},
{0x7, 8},
{0x6, 8},
{0x17, 10},
{0x16, 10},
{0x15, 10},
{0x14, 10},
{0x13, 10},
{0x12, 10},
{0x23, 11},
{0x22, 11},
{0x21, 11},
{0x20, 11},
{0x1f, 11},
{0x1e, 11},
{0x1d, 11},
{0x1c, 11},
{0x1b, 11},
{0x1a, 11},
{0x19, 11},
{0x18, 11},
{0x8, 11}, /* escape */
{0xf, 11}, /* stuffing */
{0x0, 8}, /* end (and 15 more 0 bits should follow) */
};
const uint8_t mbPatTable[64][2] = {
{0x1, 9},
{0xb, 5},
{0x9, 5},
{0xd, 6},
{0xd, 4},
{0x17, 7},
{0x13, 7},
{0x1f, 8},
{0xc, 4},
{0x16, 7},
{0x12, 7},
{0x1e, 8},
{0x13, 5},
{0x1b, 8},
{0x17, 8},
{0x13, 8},
{0xb, 4},
{0x15, 7},
{0x11, 7},
{0x1d, 8},
{0x11, 5},
{0x19, 8},
{0x15, 8},
{0x11, 8},
{0xf, 6},
{0xf, 8},
{0xd, 8},
{0x3, 9},
{0xf, 5},
{0xb, 8},
{0x7, 8},
{0x7, 9},
{0xa, 4},
{0x14, 7},
{0x10, 7},
{0x1c, 8},
{0xe, 6},
{0xe, 8},
{0xc, 8},
{0x2, 9},
{0x10, 5},
{0x18, 8},
{0x14, 8},
{0x10, 8},
{0xe, 5},
{0xa, 8},
{0x6, 8},
{0x6, 9},
{0x12, 5},
{0x1a, 8},
{0x16, 8},
{0x12, 8},
{0xd, 5},
{0x9, 8},
{0x5, 8},
{0x5, 9},
{0xc, 5},
{0x8, 8},
{0x4, 8},
{0x4, 9},
{0x7, 3},
{0xa, 5},
{0x8, 5},
{0xc, 6}
};
const uint8_t mbMotionVectorTable[17][2] = {
{ 0x1, 1 },
{ 0x1, 2 },
{ 0x1, 3 },
{ 0x1, 4 },
{ 0x3, 6 },
{ 0x5, 7 },
{ 0x4, 7 },
{ 0x3, 7 },
{ 0xb, 9 },
{ 0xa, 9 },
{ 0x9, 9 },
{ 0x11, 10 },
{ 0x10, 10 },
{ 0xf, 10 },
{ 0xe, 10 },
{ 0xd, 10 },
{ 0xc, 10 },
};
const AVRational ff_frame_rate_tab[] = {
{ 0, 0},
{24000, 1001},
{ 24, 1},
{ 25, 1},
{30000, 1001},
{ 30, 1},
{ 50, 1},
{60000, 1001},
{ 60, 1},
// Xing's 15fps: (9)
{ 15, 1},
// libmpeg3's "Unofficial economy rates": (10-13)
{ 5, 1},
{ 10, 1},
{ 12, 1},
{ 15, 1},
{ 0, 0},
};
const uint8_t ff_mpeg1_dc_scale_table[128]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
};
const float mpeg1_aspect[16]={
0.0000,
1.0000,
0.6735,
0.7031,
0.7615,
0.8055,
0.8437,
0.8935,
0.9157,
0.9815,
1.0255,
1.0695,
1.0950,
1.1575,
1.2015,
};
const AVRational mpeg2_aspect[16]={
{0,1},
{1,1},
{4,3},
{16,9},
{221,100},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
};

456
libavcodec/mpeg12data.h
View File

@ -1,5 +1,5 @@
/*
* MPEG1 codec / MPEG2 decoder
* MPEG1/2 tables
* copyright (c) 2000,2001 Fabrice Bellard
* copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
@ -31,452 +31,20 @@
#include <stdint.h>
#include "mpegvideo.h"
const uint16_t ff_mpeg1_default_intra_matrix[64] = {
8, 16, 19, 22, 26, 27, 29, 34,
16, 16, 22, 24, 27, 29, 34, 37,
19, 22, 26, 27, 29, 34, 34, 38,
22, 22, 26, 27, 29, 34, 37, 40,
22, 26, 27, 29, 32, 35, 40, 48,
26, 27, 29, 32, 35, 40, 48, 58,
26, 27, 29, 34, 38, 46, 56, 69,
27, 29, 35, 38, 46, 56, 69, 83
};
extern const uint16_t vlc_dc_lum_code[12];
extern const unsigned char vlc_dc_lum_bits[12];
extern const uint16_t vlc_dc_chroma_code[12];
extern const unsigned char vlc_dc_chroma_bits[12];
const uint16_t ff_mpeg1_default_non_intra_matrix[64] = {
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
};
extern RLTable rl_mpeg1;
extern RLTable rl_mpeg2;
static const uint16_t vlc_dc_lum_code[12] = {
0x4, 0x0, 0x1, 0x5, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe, 0x1ff,
};
static const unsigned char vlc_dc_lum_bits[12] = {
3, 2, 2, 3, 3, 4, 5, 6, 7, 8, 9, 9,
};
extern const uint8_t mbAddrIncrTable[36][2];
extern const uint8_t mbPatTable[64][2];
static const uint16_t vlc_dc_chroma_code[12] = {
0x0, 0x1, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe, 0x3fe, 0x3ff,
};
static const unsigned char vlc_dc_chroma_bits[12] = {
2, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10,
};
extern const uint8_t mbMotionVectorTable[17][2];
static const uint16_t mpeg1_vlc[113][2] = {
{ 0x3, 2 }, { 0x4, 4 }, { 0x5, 5 }, { 0x6, 7 },
{ 0x26, 8 }, { 0x21, 8 }, { 0xa, 10 }, { 0x1d, 12 },
{ 0x18, 12 }, { 0x13, 12 }, { 0x10, 12 }, { 0x1a, 13 },
{ 0x19, 13 }, { 0x18, 13 }, { 0x17, 13 }, { 0x1f, 14 },
{ 0x1e, 14 }, { 0x1d, 14 }, { 0x1c, 14 }, { 0x1b, 14 },
{ 0x1a, 14 }, { 0x19, 14 }, { 0x18, 14 }, { 0x17, 14 },
{ 0x16, 14 }, { 0x15, 14 }, { 0x14, 14 }, { 0x13, 14 },
{ 0x12, 14 }, { 0x11, 14 }, { 0x10, 14 }, { 0x18, 15 },
{ 0x17, 15 }, { 0x16, 15 }, { 0x15, 15 }, { 0x14, 15 },
{ 0x13, 15 }, { 0x12, 15 }, { 0x11, 15 }, { 0x10, 15 },
{ 0x3, 3 }, { 0x6, 6 }, { 0x25, 8 }, { 0xc, 10 },
{ 0x1b, 12 }, { 0x16, 13 }, { 0x15, 13 }, { 0x1f, 15 },
{ 0x1e, 15 }, { 0x1d, 15 }, { 0x1c, 15 }, { 0x1b, 15 },
{ 0x1a, 15 }, { 0x19, 15 }, { 0x13, 16 }, { 0x12, 16 },
{ 0x11, 16 }, { 0x10, 16 }, { 0x5, 4 }, { 0x4, 7 },
{ 0xb, 10 }, { 0x14, 12 }, { 0x14, 13 }, { 0x7, 5 },
{ 0x24, 8 }, { 0x1c, 12 }, { 0x13, 13 }, { 0x6, 5 },
{ 0xf, 10 }, { 0x12, 12 }, { 0x7, 6 }, { 0x9, 10 },
{ 0x12, 13 }, { 0x5, 6 }, { 0x1e, 12 }, { 0x14, 16 },
{ 0x4, 6 }, { 0x15, 12 }, { 0x7, 7 }, { 0x11, 12 },
{ 0x5, 7 }, { 0x11, 13 }, { 0x27, 8 }, { 0x10, 13 },
{ 0x23, 8 }, { 0x1a, 16 }, { 0x22, 8 }, { 0x19, 16 },
{ 0x20, 8 }, { 0x18, 16 }, { 0xe, 10 }, { 0x17, 16 },
{ 0xd, 10 }, { 0x16, 16 }, { 0x8, 10 }, { 0x15, 16 },
{ 0x1f, 12 }, { 0x1a, 12 }, { 0x19, 12 }, { 0x17, 12 },
{ 0x16, 12 }, { 0x1f, 13 }, { 0x1e, 13 }, { 0x1d, 13 },
{ 0x1c, 13 }, { 0x1b, 13 }, { 0x1f, 16 }, { 0x1e, 16 },
{ 0x1d, 16 }, { 0x1c, 16 }, { 0x1b, 16 },
{ 0x1, 6 }, /* escape */
{ 0x2, 2 }, /* EOB */
};
static const uint16_t mpeg2_vlc[113][2] = {
{0x02, 2}, {0x06, 3}, {0x07, 4}, {0x1c, 5},
{0x1d, 5}, {0x05, 6}, {0x04, 6}, {0x7b, 7},
{0x7c, 7}, {0x23, 8}, {0x22, 8}, {0xfa, 8},
{0xfb, 8}, {0xfe, 8}, {0xff, 8}, {0x1f,14},
{0x1e,14}, {0x1d,14}, {0x1c,14}, {0x1b,14},
{0x1a,14}, {0x19,14}, {0x18,14}, {0x17,14},
{0x16,14}, {0x15,14}, {0x14,14}, {0x13,14},
{0x12,14}, {0x11,14}, {0x10,14}, {0x18,15},
{0x17,15}, {0x16,15}, {0x15,15}, {0x14,15},
{0x13,15}, {0x12,15}, {0x11,15}, {0x10,15},
{0x02, 3}, {0x06, 5}, {0x79, 7}, {0x27, 8},
{0x20, 8}, {0x16,13}, {0x15,13}, {0x1f,15},
{0x1e,15}, {0x1d,15}, {0x1c,15}, {0x1b,15},
{0x1a,15}, {0x19,15}, {0x13,16}, {0x12,16},
{0x11,16}, {0x10,16}, {0x05, 5}, {0x07, 7},
{0xfc, 8}, {0x0c,10}, {0x14,13}, {0x07, 5},
{0x26, 8}, {0x1c,12}, {0x13,13}, {0x06, 6},
{0xfd, 8}, {0x12,12}, {0x07, 6}, {0x04, 9},
{0x12,13}, {0x06, 7}, {0x1e,12}, {0x14,16},
{0x04, 7}, {0x15,12}, {0x05, 7}, {0x11,12},
{0x78, 7}, {0x11,13}, {0x7a, 7}, {0x10,13},
{0x21, 8}, {0x1a,16}, {0x25, 8}, {0x19,16},
{0x24, 8}, {0x18,16}, {0x05, 9}, {0x17,16},
{0x07, 9}, {0x16,16}, {0x0d,10}, {0x15,16},
{0x1f,12}, {0x1a,12}, {0x19,12}, {0x17,12},
{0x16,12}, {0x1f,13}, {0x1e,13}, {0x1d,13},
{0x1c,13}, {0x1b,13}, {0x1f,16}, {0x1e,16},
{0x1d,16}, {0x1c,16}, {0x1b,16},
{0x01,6}, /* escape */
{0x06,4}, /* EOB */
};
static const int8_t mpeg1_level[111] = {
1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40,
1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 1, 2, 3, 4, 5, 1,
2, 3, 4, 1, 2, 3, 1, 2,
3, 1, 2, 3, 1, 2, 1, 2,
1, 2, 1, 2, 1, 2, 1, 2,
1, 2, 1, 2, 1, 2, 1, 2,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1,
};
static const int8_t mpeg1_run[111] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 2, 2, 2, 2, 2, 3,
3, 3, 3, 4, 4, 4, 5, 5,
5, 6, 6, 6, 7, 7, 8, 8,
9, 9, 10, 10, 11, 11, 12, 12,
13, 13, 14, 14, 15, 15, 16, 16,
17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31,
};
static RLTable rl_mpeg1 = {
111,
111,
mpeg1_vlc,
mpeg1_run,
mpeg1_level,
};
static RLTable rl_mpeg2 = {
111,
111,
mpeg2_vlc,
mpeg1_run,
mpeg1_level,
};
static const uint8_t mbAddrIncrTable[36][2] = {
{0x1, 1},
{0x3, 3},
{0x2, 3},
{0x3, 4},
{0x2, 4},
{0x3, 5},
{0x2, 5},
{0x7, 7},
{0x6, 7},
{0xb, 8},
{0xa, 8},
{0x9, 8},
{0x8, 8},
{0x7, 8},
{0x6, 8},
{0x17, 10},
{0x16, 10},
{0x15, 10},
{0x14, 10},
{0x13, 10},
{0x12, 10},
{0x23, 11},
{0x22, 11},
{0x21, 11},
{0x20, 11},
{0x1f, 11},
{0x1e, 11},
{0x1d, 11},
{0x1c, 11},
{0x1b, 11},
{0x1a, 11},
{0x19, 11},
{0x18, 11},
{0x8, 11}, /* escape */
{0xf, 11}, /* stuffing */
{0x0, 8}, /* end (and 15 more 0 bits should follow) */
};
static const uint8_t mbPatTable[64][2] = {
{0x1, 9},
{0xb, 5},
{0x9, 5},
{0xd, 6},
{0xd, 4},
{0x17, 7},
{0x13, 7},
{0x1f, 8},
{0xc, 4},
{0x16, 7},
{0x12, 7},
{0x1e, 8},
{0x13, 5},
{0x1b, 8},
{0x17, 8},
{0x13, 8},
{0xb, 4},
{0x15, 7},
{0x11, 7},
{0x1d, 8},
{0x11, 5},
{0x19, 8},
{0x15, 8},
{0x11, 8},
{0xf, 6},
{0xf, 8},
{0xd, 8},
{0x3, 9},
{0xf, 5},
{0xb, 8},
{0x7, 8},
{0x7, 9},
{0xa, 4},
{0x14, 7},
{0x10, 7},
{0x1c, 8},
{0xe, 6},
{0xe, 8},
{0xc, 8},
{0x2, 9},
{0x10, 5},
{0x18, 8},
{0x14, 8},
{0x10, 8},
{0xe, 5},
{0xa, 8},
{0x6, 8},
{0x6, 9},
{0x12, 5},
{0x1a, 8},
{0x16, 8},
{0x12, 8},
{0xd, 5},
{0x9, 8},
{0x5, 8},
{0x5, 9},
{0xc, 5},
{0x8, 8},
{0x4, 8},
{0x4, 9},
{0x7, 3},
{0xa, 5},
{0x8, 5},
{0xc, 6}
};
#define MB_TYPE_ZERO_MV 0x20000000
#define IS_ZERO_MV(a) ((a)&MB_TYPE_ZERO_MV)
static const uint8_t table_mb_ptype[7][2] = {
{ 3, 5 }, // 0x01 MB_INTRA
{ 1, 2 }, // 0x02 MB_PAT
{ 1, 3 }, // 0x08 MB_FOR
{ 1, 1 }, // 0x0A MB_FOR|MB_PAT
{ 1, 6 }, // 0x11 MB_QUANT|MB_INTRA
{ 1, 5 }, // 0x12 MB_QUANT|MB_PAT
{ 2, 5 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT
};
static const uint32_t ptype2mb_type[7] = {
MB_TYPE_INTRA,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16,
MB_TYPE_L0,
MB_TYPE_L0 | MB_TYPE_CBP,
MB_TYPE_QUANT | MB_TYPE_INTRA,
MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16,
MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP,
};
static const uint8_t table_mb_btype[11][2] = {
{ 3, 5 }, // 0x01 MB_INTRA
{ 2, 3 }, // 0x04 MB_BACK
{ 3, 3 }, // 0x06 MB_BACK|MB_PAT
{ 2, 4 }, // 0x08 MB_FOR
{ 3, 4 }, // 0x0A MB_FOR|MB_PAT
{ 2, 2 }, // 0x0C MB_FOR|MB_BACK
{ 3, 2 }, // 0x0E MB_FOR|MB_BACK|MB_PAT
{ 1, 6 }, // 0x11 MB_QUANT|MB_INTRA
{ 2, 6 }, // 0x16 MB_QUANT|MB_BACK|MB_PAT
{ 3, 6 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT
{ 2, 5 }, // 0x1E MB_QUANT|MB_FOR|MB_BACK|MB_PAT
};
static const uint32_t btype2mb_type[11] = {
MB_TYPE_INTRA,
MB_TYPE_L1,
MB_TYPE_L1 | MB_TYPE_CBP,
MB_TYPE_L0,
MB_TYPE_L0 | MB_TYPE_CBP,
MB_TYPE_L0L1,
MB_TYPE_L0L1 | MB_TYPE_CBP,
MB_TYPE_QUANT | MB_TYPE_INTRA,
MB_TYPE_QUANT | MB_TYPE_L1 | MB_TYPE_CBP,
MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP,
MB_TYPE_QUANT | MB_TYPE_L0L1 | MB_TYPE_CBP,
};
static const uint8_t mbMotionVectorTable[17][2] = {
{ 0x1, 1 },
{ 0x1, 2 },
{ 0x1, 3 },
{ 0x1, 4 },
{ 0x3, 6 },
{ 0x5, 7 },
{ 0x4, 7 },
{ 0x3, 7 },
{ 0xb, 9 },
{ 0xa, 9 },
{ 0x9, 9 },
{ 0x11, 10 },
{ 0x10, 10 },
{ 0xf, 10 },
{ 0xe, 10 },
{ 0xd, 10 },
{ 0xc, 10 },
};
const AVRational ff_frame_rate_tab[] = {
{ 0, 0},
{24000, 1001},
{ 24, 1},
{ 25, 1},
{30000, 1001},
{ 30, 1},
{ 50, 1},
{60000, 1001},
{ 60, 1},
// Xing's 15fps: (9)
{ 15, 1},
// libmpeg3's "Unofficial economy rates": (10-13)
{ 5, 1},
{ 10, 1},
{ 12, 1},
{ 15, 1},
{ 0, 0},
};
static const uint8_t non_linear_qscale[32] = {
0, 1, 2, 3, 4, 5, 6, 7,
8,10,12,14,16,18,20,22,
24,28,32,36,40,44,48,52,
56,64,72,80,88,96,104,112,
};
static const uint8_t inv_non_linear_qscale[13] = {
0, 2, 4, 6, 8,
9,10,11,12,13,14,15,16,
};
const uint8_t ff_mpeg1_dc_scale_table[128]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
};
static const uint8_t mpeg2_dc_scale_table1[128]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
};
static const uint8_t mpeg2_dc_scale_table2[128]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
};
static const uint8_t mpeg2_dc_scale_table3[128]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
};
static const uint8_t *mpeg2_dc_scale_table[4]={
ff_mpeg1_dc_scale_table,
mpeg2_dc_scale_table1,
mpeg2_dc_scale_table2,
mpeg2_dc_scale_table3,
};
static const float mpeg1_aspect[16]={
0.0000,
1.0000,
0.6735,
0.7031,
0.7615,
0.8055,
0.8437,
0.8935,
0.9157,
0.9815,
1.0255,
1.0695,
1.0950,
1.1575,
1.2015,
};
static const AVRational mpeg2_aspect[16]={
{0,1},
{1,1},
{4,3},
{16,9},
{221,100},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
{0,1},
};
static const uint8_t svcd_scan_offset_placeholder[14]={
0x10, 0x0E,
0x00, 0x80, 0x81,
0x00, 0x80, 0x81,
0xff, 0xff, 0xff,
0xff, 0xff, 0xff,
};
extern const float mpeg1_aspect[16];
extern const AVRational mpeg2_aspect[16];
#endif // AVCODEC_MPEG12DATA_H

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/*
* MPEG1/2 decoder tables
* copyright (c) 2000,2001 Fabrice Bellard
* copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file mpeg12decdata.h
* MPEG1/2 decoder tables.
*/
#ifndef AVCODEC_MPEG12DECDATA_H
#define AVCODEC_MPEG12DECDATA_H
#include <stdint.h>
#include "mpegvideo.h"
#define MB_TYPE_ZERO_MV 0x20000000
#define IS_ZERO_MV(a) ((a)&MB_TYPE_ZERO_MV)
static const uint8_t table_mb_ptype[7][2] = {
{ 3, 5 }, // 0x01 MB_INTRA
{ 1, 2 }, // 0x02 MB_PAT
{ 1, 3 }, // 0x08 MB_FOR
{ 1, 1 }, // 0x0A MB_FOR|MB_PAT
{ 1, 6 }, // 0x11 MB_QUANT|MB_INTRA
{ 1, 5 }, // 0x12 MB_QUANT|MB_PAT
{ 2, 5 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT
};
static const uint32_t ptype2mb_type[7] = {
MB_TYPE_INTRA,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16,
MB_TYPE_L0,
MB_TYPE_L0 | MB_TYPE_CBP,
MB_TYPE_QUANT | MB_TYPE_INTRA,
MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16,
MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP,
};
static const uint8_t table_mb_btype[11][2] = {
{ 3, 5 }, // 0x01 MB_INTRA
{ 2, 3 }, // 0x04 MB_BACK
{ 3, 3 }, // 0x06 MB_BACK|MB_PAT
{ 2, 4 }, // 0x08 MB_FOR
{ 3, 4 }, // 0x0A MB_FOR|MB_PAT
{ 2, 2 }, // 0x0C MB_FOR|MB_BACK
{ 3, 2 }, // 0x0E MB_FOR|MB_BACK|MB_PAT
{ 1, 6 }, // 0x11 MB_QUANT|MB_INTRA
{ 2, 6 }, // 0x16 MB_QUANT|MB_BACK|MB_PAT
{ 3, 6 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT
{ 2, 5 }, // 0x1E MB_QUANT|MB_FOR|MB_BACK|MB_PAT
};
static const uint32_t btype2mb_type[11] = {
MB_TYPE_INTRA,
MB_TYPE_L1,
MB_TYPE_L1 | MB_TYPE_CBP,
MB_TYPE_L0,
MB_TYPE_L0 | MB_TYPE_CBP,
MB_TYPE_L0L1,
MB_TYPE_L0L1 | MB_TYPE_CBP,
MB_TYPE_QUANT | MB_TYPE_INTRA,
MB_TYPE_QUANT | MB_TYPE_L1 | MB_TYPE_CBP,
MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP,
MB_TYPE_QUANT | MB_TYPE_L0L1 | MB_TYPE_CBP,
};
static const uint8_t non_linear_qscale[32] = {
0, 1, 2, 3, 4, 5, 6, 7,
8,10,12,14,16,18,20,22,
24,28,32,36,40,44,48,52,
56,64,72,80,88,96,104,112,
};
static const uint8_t mpeg2_dc_scale_table1[128]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
};
static const uint8_t mpeg2_dc_scale_table2[128]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
};
static const uint8_t mpeg2_dc_scale_table3[128]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
};
static const uint8_t *mpeg2_dc_scale_table[4]={
ff_mpeg1_dc_scale_table,
mpeg2_dc_scale_table1,
mpeg2_dc_scale_table2,
mpeg2_dc_scale_table3,
};
#endif // AVCODEC_MPEG12DECDATA_H

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/*
* MPEG1/2 encoder
* Copyright (c) 2000,2001 Fabrice Bellard.
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file mpeg12enc.c
* MPEG1/2 encoder
*/
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "mpeg12.h"
#include "mpeg12data.h"
#include "bytestream.h"
static const uint8_t inv_non_linear_qscale[13] = {
0, 2, 4, 6, 8,
9,10,11,12,13,14,15,16,
};
static const uint8_t svcd_scan_offset_placeholder[14] = {
0x10, 0x0E,
0x00, 0x80, 0x81,
0x00, 0x80, 0x81,
0xff, 0xff, 0xff,
0xff, 0xff, 0xff,
};
static void mpeg1_encode_block(MpegEncContext *s,
DCTELEM *block,
int component);
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code); // RAL: f_code parameter added
static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
static uint8_t fcode_tab[MAX_MV*2+1];
static uint8_t uni_mpeg1_ac_vlc_len [64*64*2];
static uint8_t uni_mpeg2_ac_vlc_len [64*64*2];
/* simple include everything table for dc, first byte is bits number next 3 are code*/
static uint32_t mpeg1_lum_dc_uni[512];
static uint32_t mpeg1_chr_dc_uni[512];
static uint8_t mpeg1_index_run[2][64];
static int8_t mpeg1_max_level[2][64];
static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){
int i;
for(i=0; i<128; i++){
int level= i-64;
int run;
for(run=0; run<64; run++){
int len, bits, code;
int alevel= FFABS(level);
int sign= (level>>31)&1;
if (alevel > rl->max_level[0][run])
code= 111; /*rl->n*/
else
code= rl->index_run[0][run] + alevel - 1;
if (code < 111 /* rl->n */) {
/* store the vlc & sign at once */
len= rl->table_vlc[code][1]+1;
bits= (rl->table_vlc[code][0]<<1) + sign;
} else {
len= rl->table_vlc[111/*rl->n*/][1]+6;
bits= rl->table_vlc[111/*rl->n*/][0]<<6;
bits|= run;
if (alevel < 128) {
bits<<=8; len+=8;
bits|= level & 0xff;
} else {
bits<<=16; len+=16;
bits|= level & 0xff;
if (level < 0) {
bits|= 0x8001 + level + 255;
} else {
bits|= level & 0xffff;
}
}
}
uni_ac_vlc_len [UNI_AC_ENC_INDEX(run, i)]= len;
}
}
}
static int find_frame_rate_index(MpegEncContext *s){
int i;
int64_t dmin= INT64_MAX;
int64_t d;
for(i=1;i<14;i++) {
int64_t n0= 1001LL/ff_frame_rate_tab[i].den*ff_frame_rate_tab[i].num*s->avctx->time_base.num;
int64_t n1= 1001LL*s->avctx->time_base.den;
if(s->avctx->strict_std_compliance > FF_COMPLIANCE_INOFFICIAL && i>=9) break;
d = FFABS(n0 - n1);
if(d < dmin){
dmin=d;
s->frame_rate_index= i;
}
}
if(dmin)
return -1;
else
return 0;
}
static int encode_init(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
if(MPV_encode_init(avctx) < 0)
return -1;
if(find_frame_rate_index(s) < 0){
if(s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n", avctx->time_base.den, avctx->time_base.num);
return -1;
}else{
av_log(avctx, AV_LOG_INFO, "MPEG1/2 does not support %d/%d fps, there may be AV sync issues\n", avctx->time_base.den, avctx->time_base.num);
}
}
if(avctx->profile == FF_PROFILE_UNKNOWN){
if(avctx->level != FF_LEVEL_UNKNOWN){
av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
return -1;
}
avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0; /* Main or 4:2:2 */
}
if(avctx->level == FF_LEVEL_UNKNOWN){
if(avctx->profile == 0){ /* 4:2:2 */
if(avctx->width <= 720 && avctx->height <= 608) avctx->level = 5; /* Main */
else avctx->level = 2; /* High */
}else{
if(avctx->profile != 1 && s->chroma_format != CHROMA_420){
av_log(avctx, AV_LOG_ERROR, "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
return -1;
}
if(avctx->width <= 720 && avctx->height <= 576) avctx->level = 8; /* Main */
else if(avctx->width <= 1440) avctx->level = 6; /* High 1440 */
else avctx->level = 4; /* High */
}
}
if((avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) && s->frame_rate_index != 4){
av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n");
return -1;
}
return 0;
}
static void put_header(MpegEncContext *s, int header)
{
align_put_bits(&s->pb);
put_bits(&s->pb, 16, header>>16);
put_bits(&s->pb, 16, header&0xFFFF);
}
/* put sequence header if needed */
static void mpeg1_encode_sequence_header(MpegEncContext *s)
{
unsigned int vbv_buffer_size;
unsigned int fps, v;
int i;
uint64_t time_code;
float best_aspect_error= 1E10;
float aspect_ratio= av_q2d(s->avctx->sample_aspect_ratio);
int constraint_parameter_flag;
if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA)
if (s->current_picture.key_frame) {
AVRational framerate= ff_frame_rate_tab[s->frame_rate_index];
/* mpeg1 header repeated every gop */
put_header(s, SEQ_START_CODE);
put_bits(&s->pb, 12, s->width);
put_bits(&s->pb, 12, s->height);
for(i=1; i<15; i++){
float error= aspect_ratio;
if(s->codec_id == CODEC_ID_MPEG1VIDEO || i <=1)
error-= 1.0/mpeg1_aspect[i];
else
error-= av_q2d(mpeg2_aspect[i])*s->height/s->width;
error= FFABS(error);
if(error < best_aspect_error){
best_aspect_error= error;
s->aspect_ratio_info= i;
}
}
put_bits(&s->pb, 4, s->aspect_ratio_info);
put_bits(&s->pb, 4, s->frame_rate_index);
if(s->avctx->rc_max_rate){
v = (s->avctx->rc_max_rate + 399) / 400;
if (v > 0x3ffff && s->codec_id == CODEC_ID_MPEG1VIDEO)
v = 0x3ffff;
}else{
v= 0x3FFFF;
}
if(s->avctx->rc_buffer_size)
vbv_buffer_size = s->avctx->rc_buffer_size;
else
/* VBV calculation: Scaled so that a VCD has the proper VBV size of 40 kilobytes */
vbv_buffer_size = (( 20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
vbv_buffer_size= (vbv_buffer_size + 16383) / 16384;
put_bits(&s->pb, 18, v & 0x3FFFF);
put_bits(&s->pb, 1, 1); /* marker */
put_bits(&s->pb, 10, vbv_buffer_size & 0x3FF);
constraint_parameter_flag=
s->width <= 768 && s->height <= 576 &&
s->mb_width * s->mb_height <= 396 &&
s->mb_width * s->mb_height * framerate.num <= framerate.den*396*25 &&
framerate.num <= framerate.den*30 &&
s->avctx->me_range && s->avctx->me_range < 128 &&
vbv_buffer_size <= 20 &&
v <= 1856000/400 &&
s->codec_id == CODEC_ID_MPEG1VIDEO;
put_bits(&s->pb, 1, constraint_parameter_flag);
ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
if(s->codec_id == CODEC_ID_MPEG2VIDEO){
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 1); //seq ext
put_bits(&s->pb, 1, s->avctx->profile == 0); //escx 1 for 4:2:2 profile */
put_bits(&s->pb, 3, s->avctx->profile); //profile
put_bits(&s->pb, 4, s->avctx->level); //level
put_bits(&s->pb, 1, s->progressive_sequence);
put_bits(&s->pb, 2, s->chroma_format);
put_bits(&s->pb, 2, 0); //horizontal size ext
put_bits(&s->pb, 2, 0); //vertical size ext
put_bits(&s->pb, 12, v>>18); //bitrate ext
put_bits(&s->pb, 1, 1); //marker
put_bits(&s->pb, 8, vbv_buffer_size >>10); //vbv buffer ext
put_bits(&s->pb, 1, s->low_delay);
put_bits(&s->pb, 2, 0); // frame_rate_ext_n
put_bits(&s->pb, 5, 0); // frame_rate_ext_d
}
put_header(s, GOP_START_CODE);
put_bits(&s->pb, 1, !!(s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE)); /* drop frame flag */
/* time code : we must convert from the real frame rate to a
fake mpeg frame rate in case of low frame rate */
fps = (framerate.num + framerate.den/2)/ framerate.den;
time_code = s->current_picture_ptr->coded_picture_number + s->avctx->timecode_frame_start;
s->gop_picture_number = s->current_picture_ptr->coded_picture_number;
if (s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) {
/* only works for NTSC 29.97 */
int d = time_code / 17982;
int m = time_code % 17982;
//if (m < 2) m += 2; /* not needed since -2,-1 / 1798 in C returns 0 */
time_code += 18 * d + 2 * ((m - 2) / 1798);
}
put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
put_bits(&s->pb, 6, (uint32_t)((time_code / (fps * 60)) % 60));
put_bits(&s->pb, 1, 1);
put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP));
put_bits(&s->pb, 1, 0); /* broken link */
}
}
static inline void encode_mb_skip_run(MpegEncContext *s, int run){
while (run >= 33) {
put_bits(&s->pb, 11, 0x008);
run -= 33;
}
put_bits(&s->pb, mbAddrIncrTable[run][1],
mbAddrIncrTable[run][0]);
}
static av_always_inline void put_qscale(MpegEncContext *s)
{
if(s->q_scale_type){
assert(s->qscale>=1 && s->qscale <=12);
put_bits(&s->pb, 5, inv_non_linear_qscale[s->qscale]);
}else{
put_bits(&s->pb, 5, s->qscale);
}
}
void ff_mpeg1_encode_slice_header(MpegEncContext *s){
put_header(s, SLICE_MIN_START_CODE + s->mb_y);
put_qscale(s);
put_bits(&s->pb, 1, 0); /* slice extra information */
}
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
{
mpeg1_encode_sequence_header(s);
/* mpeg1 picture header */
put_header(s, PICTURE_START_CODE);
/* temporal reference */
// RAL: s->picture_number instead of s->fake_picture_number
put_bits(&s->pb, 10, (s->picture_number -
s->gop_picture_number) & 0x3ff);
put_bits(&s->pb, 3, s->pict_type);
s->vbv_delay_ptr= s->pb.buf + put_bits_count(&s->pb)/8;
put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */
// RAL: Forward f_code also needed for B frames
if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if(s->codec_id == CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->f_code); /* forward_f_code */
else
put_bits(&s->pb, 3, 7); /* forward_f_code */
}
// RAL: Backward f_code necessary for B frames
if (s->pict_type == B_TYPE) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if(s->codec_id == CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->b_code); /* backward_f_code */
else
put_bits(&s->pb, 3, 7); /* backward_f_code */
}
put_bits(&s->pb, 1, 0); /* extra bit picture */
s->frame_pred_frame_dct = 1;
if(s->codec_id == CODEC_ID_MPEG2VIDEO){
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 8); //pic ext
if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
put_bits(&s->pb, 4, s->f_code);
put_bits(&s->pb, 4, s->f_code);
}else{
put_bits(&s->pb, 8, 255);
}
if (s->pict_type == B_TYPE) {
put_bits(&s->pb, 4, s->b_code);
put_bits(&s->pb, 4, s->b_code);
}else{
put_bits(&s->pb, 8, 255);
}
put_bits(&s->pb, 2, s->intra_dc_precision);
assert(s->picture_structure == PICT_FRAME);
put_bits(&s->pb, 2, s->picture_structure);
if (s->progressive_sequence) {
put_bits(&s->pb, 1, 0); /* no repeat */
} else {
put_bits(&s->pb, 1, s->current_picture_ptr->top_field_first);
}
/* XXX: optimize the generation of this flag with entropy
measures */
s->frame_pred_frame_dct = s->progressive_sequence;
put_bits(&s->pb, 1, s->frame_pred_frame_dct);
put_bits(&s->pb, 1, s->concealment_motion_vectors);
put_bits(&s->pb, 1, s->q_scale_type);
put_bits(&s->pb, 1, s->intra_vlc_format);
put_bits(&s->pb, 1, s->alternate_scan);
put_bits(&s->pb, 1, s->repeat_first_field);
s->progressive_frame = s->progressive_sequence;
put_bits(&s->pb, 1, s->chroma_format == CHROMA_420 ? s->progressive_frame : 0); /* chroma_420_type */
put_bits(&s->pb, 1, s->progressive_frame);
put_bits(&s->pb, 1, 0); //composite_display_flag
}
if(s->flags & CODEC_FLAG_SVCD_SCAN_OFFSET){
int i;
put_header(s, USER_START_CODE);
for(i=0; i<sizeof(svcd_scan_offset_placeholder); i++){
put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
}
}
s->mb_y=0;
ff_mpeg1_encode_slice_header(s);
}
static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
int has_mv, int field_motion)
{
put_bits(&s->pb, n, bits);
if (!s->frame_pred_frame_dct) {
if (has_mv)
put_bits(&s->pb, 2, 2 - field_motion); /* motion_type: frame/field */
put_bits(&s->pb, 1, s->interlaced_dct);
}
}
static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y,
int mb_block_count)
{
int i, cbp;
const int mb_x = s->mb_x;
const int mb_y = s->mb_y;
const int first_mb= mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
/* compute cbp */
cbp = 0;
for(i=0;i<mb_block_count;i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (mb_block_count - 1 - i);
}
if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
(mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == CODEC_ID_MPEG1VIDEO)) &&
((s->pict_type == P_TYPE && (motion_x | motion_y) == 0) ||
(s->pict_type == B_TYPE && s->mv_dir == s->last_mv_dir && (((s->mv_dir & MV_DIR_FORWARD) ? ((s->mv[0][0][0] - s->last_mv[0][0][0])|(s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
((s->mv_dir & MV_DIR_BACKWARD) ? ((s->mv[1][0][0] - s->last_mv[1][0][0])|(s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
s->mb_skip_run++;
s->qscale -= s->dquant;
s->skip_count++;
s->misc_bits++;
s->last_bits++;
if(s->pict_type == P_TYPE){
s->last_mv[0][1][0]= s->last_mv[0][0][0]=
s->last_mv[0][1][1]= s->last_mv[0][0][1]= 0;
}
} else {
if(first_mb){
assert(s->mb_skip_run == 0);
encode_mb_skip_run(s, s->mb_x);
}else{
encode_mb_skip_run(s, s->mb_skip_run);
}
if (s->pict_type == I_TYPE) {
if(s->dquant && cbp){
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 0, 0); /* macroblock_type : macroblock_quant = 0 */
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->i_count++;
} else if (s->mb_intra) {
if(s->dquant && cbp){
put_mb_modes(s, 6, 0x01, 0, 0);
put_qscale(s);
}else{
put_mb_modes(s, 5, 0x03, 0, 0);
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->i_count++;
memset(s->last_mv, 0, sizeof(s->last_mv));
} else if (s->pict_type == P_TYPE) {
if(s->mv_type == MV_TYPE_16X16){
if (cbp != 0) {
if ((motion_x|motion_y) == 0) {
if(s->dquant){
put_mb_modes(s, 5, 1, 0, 0); /* macroblock_pattern & quant */
put_qscale(s);
}else{
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_pattern only */
}
s->misc_bits+= get_bits_diff(s);
} else {
if(s->dquant){
put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 1, 0); /* motion + cbp */
}
s->misc_bits+= get_bits_diff(s);
mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code); // RAL: f_code parameter added
mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code); // RAL: f_code parameter added
s->mv_bits+= get_bits_diff(s);
}
} else {
put_bits(&s->pb, 3, 1); /* motion only */
if (!s->frame_pred_frame_dct)
put_bits(&s->pb, 2, 2); /* motion_type: frame */
s->misc_bits+= get_bits_diff(s);
mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code); // RAL: f_code parameter added
mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code); // RAL: f_code parameter added
s->qscale -= s->dquant;
s->mv_bits+= get_bits_diff(s);
}
s->last_mv[0][1][0]= s->last_mv[0][0][0]= motion_x;
s->last_mv[0][1][1]= s->last_mv[0][0][1]= motion_y;
}else{
assert(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
if (cbp) {
if(s->dquant){
put_mb_modes(s, 5, 2, 1, 1); /* motion + cbp */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 1, 1); /* motion + cbp */
}
} else {
put_bits(&s->pb, 3, 1); /* motion only */
put_bits(&s->pb, 2, 1); /* motion_type: field */
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[0][i]);
mpeg1_encode_motion(s, s->mv[0][i][0] - s->last_mv[0][i][0] , s->f_code);
mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
s->last_mv[0][i][0]= s->mv[0][i][0];
s->last_mv[0][i][1]= 2*s->mv[0][i][1];
}
s->mv_bits+= get_bits_diff(s);
}
if(cbp) {
if (s->chroma_y_shift) {
put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
} else {
put_bits(&s->pb, mbPatTable[cbp>>2][1], mbPatTable[cbp>>2][0]);
put_bits(&s->pb, 2, cbp & 3);
}
}
s->f_count++;
} else{
static const int mb_type_len[4]={0,3,4,2}; //bak,for,bi
if(s->mv_type == MV_TYPE_16X16){
if (cbp){ // With coded bloc pattern
if (s->dquant) {
if(s->mv_dir == MV_DIR_FORWARD)
put_mb_modes(s, 6, 3, 1, 0);
else
put_mb_modes(s, mb_type_len[s->mv_dir]+3, 2, 1, 0);
put_qscale(s);
} else {
put_mb_modes(s, mb_type_len[s->mv_dir], 3, 1, 0);
}
}else{ // No coded bloc pattern
put_bits(&s->pb, mb_type_len[s->mv_dir], 2);
if (!s->frame_pred_frame_dct)
put_bits(&s->pb, 2, 2); /* motion_type: frame */
s->qscale -= s->dquant;
}
s->misc_bits += get_bits_diff(s);
if (s->mv_dir&MV_DIR_FORWARD){
mpeg1_encode_motion(s, s->mv[0][0][0] - s->last_mv[0][0][0], s->f_code);
mpeg1_encode_motion(s, s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
s->last_mv[0][0][0]=s->last_mv[0][1][0]= s->mv[0][0][0];
s->last_mv[0][0][1]=s->last_mv[0][1][1]= s->mv[0][0][1];
s->f_count++;
}
if (s->mv_dir&MV_DIR_BACKWARD){
mpeg1_encode_motion(s, s->mv[1][0][0] - s->last_mv[1][0][0], s->b_code);
mpeg1_encode_motion(s, s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
s->last_mv[1][0][0]=s->last_mv[1][1][0]= s->mv[1][0][0];
s->last_mv[1][0][1]=s->last_mv[1][1][1]= s->mv[1][0][1];
s->b_count++;
}
}else{
assert(s->mv_type == MV_TYPE_FIELD);
assert(!s->frame_pred_frame_dct);
if (cbp){ // With coded bloc pattern
if (s->dquant) {
if(s->mv_dir == MV_DIR_FORWARD)
put_mb_modes(s, 6, 3, 1, 1);
else
put_mb_modes(s, mb_type_len[s->mv_dir]+3, 2, 1, 1);
put_qscale(s);
} else {
put_mb_modes(s, mb_type_len[s->mv_dir], 3, 1, 1);
}
}else{ // No coded bloc pattern
put_bits(&s->pb, mb_type_len[s->mv_dir], 2);
put_bits(&s->pb, 2, 1); /* motion_type: field */
s->qscale -= s->dquant;
}
s->misc_bits += get_bits_diff(s);
if (s->mv_dir&MV_DIR_FORWARD){
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[0][i]);
mpeg1_encode_motion(s, s->mv[0][i][0] - s->last_mv[0][i][0] , s->f_code);
mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
s->last_mv[0][i][0]= s->mv[0][i][0];
s->last_mv[0][i][1]= 2*s->mv[0][i][1];
}
s->f_count++;
}
if (s->mv_dir&MV_DIR_BACKWARD){
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[1][i]);
mpeg1_encode_motion(s, s->mv[1][i][0] - s->last_mv[1][i][0] , s->b_code);
mpeg1_encode_motion(s, s->mv[1][i][1] - (s->last_mv[1][i][1]>>1), s->b_code);
s->last_mv[1][i][0]= s->mv[1][i][0];
s->last_mv[1][i][1]= 2*s->mv[1][i][1];
}
s->b_count++;
}
}
s->mv_bits += get_bits_diff(s);
if(cbp) {
if (s->chroma_y_shift) {
put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
} else {
put_bits(&s->pb, mbPatTable[cbp>>2][1], mbPatTable[cbp>>2][0]);
put_bits(&s->pb, 2, cbp & 3);
}
}
}
for(i=0;i<mb_block_count;i++) {
if (cbp & (1 << (mb_block_count - 1 - i))) {
mpeg1_encode_block(s, block[i], i);
}
}
s->mb_skip_run = 0;
if(s->mb_intra)
s->i_tex_bits+= get_bits_diff(s);
else
s->p_tex_bits+= get_bits_diff(s);
}
}
void mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
{
if (s->chroma_format == CHROMA_420) mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
else mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
}
// RAL: Parameter added: f_or_b_code
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
{
int code, bit_size, l, bits, range, sign;
if (val == 0) {
/* zero vector */
code = 0;
put_bits(&s->pb,
mbMotionVectorTable[0][1],
mbMotionVectorTable[0][0]);
} else {
bit_size = f_or_b_code - 1;
range = 1 << bit_size;
/* modulo encoding */
l= INT_BIT - 5 - bit_size;
val= (val<<l)>>l;
if (val >= 0) {
val--;
code = (val >> bit_size) + 1;
bits = val & (range - 1);
sign = 0;
} else {
val = -val;
val--;
code = (val >> bit_size) + 1;
bits = val & (range - 1);
sign = 1;
}
assert(code > 0 && code <= 16);
put_bits(&s->pb,
mbMotionVectorTable[code][1],
mbMotionVectorTable[code][0]);
put_bits(&s->pb, 1, sign);
if (bit_size > 0) {
put_bits(&s->pb, bit_size, bits);
}
}
}
void ff_mpeg1_encode_init(MpegEncContext *s)
{
static int done=0;
common_init(s);
if(!done){
int f_code;
int mv;
int i;
done=1;
init_rl(&rl_mpeg1, static_rl_table_store[0]);
init_rl(&rl_mpeg2, static_rl_table_store[1]);
for(i=0; i<64; i++)
{
mpeg1_max_level[0][i]= rl_mpeg1.max_level[0][i];
mpeg1_index_run[0][i]= rl_mpeg1.index_run[0][i];
}
init_uni_ac_vlc(&rl_mpeg1, uni_mpeg1_ac_vlc_len);
if(s->intra_vlc_format)
init_uni_ac_vlc(&rl_mpeg2, uni_mpeg2_ac_vlc_len);
/* build unified dc encoding tables */
for(i=-255; i<256; i++)
{
int adiff, index;
int bits, code;
int diff=i;
adiff = FFABS(diff);
if(diff<0) diff--;
index = av_log2(2*adiff);
bits= vlc_dc_lum_bits[index] + index;
code= (vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1));
mpeg1_lum_dc_uni[i+255]= bits + (code<<8);
bits= vlc_dc_chroma_bits[index] + index;
code= (vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1));
mpeg1_chr_dc_uni[i+255]= bits + (code<<8);
}
for(f_code=1; f_code<=MAX_FCODE; f_code++){
for(mv=-MAX_MV; mv<=MAX_MV; mv++){
int len;
if(mv==0) len= mbMotionVectorTable[0][1];
else{
int val, bit_size, range, code;
bit_size = f_code - 1;
range = 1 << bit_size;
val=mv;
if (val < 0)
val = -val;
val--;
code = (val >> bit_size) + 1;
if(code<17){
len= mbMotionVectorTable[code][1] + 1 + bit_size;
}else{
len= mbMotionVectorTable[16][1] + 2 + bit_size;
}
}
mv_penalty[f_code][mv+MAX_MV]= len;
}
}
for(f_code=MAX_FCODE; f_code>0; f_code--){
for(mv=-(8<<f_code); mv<(8<<f_code); mv++){
fcode_tab[mv+MAX_MV]= f_code;
}
}
}
s->me.mv_penalty= mv_penalty;
s->fcode_tab= fcode_tab;
if(s->codec_id == CODEC_ID_MPEG1VIDEO){
s->min_qcoeff=-255;
s->max_qcoeff= 255;
}else{
s->min_qcoeff=-2047;
s->max_qcoeff= 2047;
}
if (s->intra_vlc_format) {
s->intra_ac_vlc_length=
s->intra_ac_vlc_last_length= uni_mpeg2_ac_vlc_len;
} else {
s->intra_ac_vlc_length=
s->intra_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
}
s->inter_ac_vlc_length=
s->inter_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
}
static inline void encode_dc(MpegEncContext *s, int diff, int component)
{
if(((unsigned) (diff+255)) >= 511){
int index;
if(diff<0){
index= av_log2_16bit(-2*diff);
diff--;
}else{
index= av_log2_16bit(2*diff);
}
if (component == 0) {
put_bits(
&s->pb,
vlc_dc_lum_bits[index] + index,
(vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1)));
}else{
put_bits(
&s->pb,
vlc_dc_chroma_bits[index] + index,
(vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1)));
}
}else{
if (component == 0) {
put_bits(
&s->pb,
mpeg1_lum_dc_uni[diff+255]&0xFF,
mpeg1_lum_dc_uni[diff+255]>>8);
} else {
put_bits(
&s->pb,
mpeg1_chr_dc_uni[diff+255]&0xFF,
mpeg1_chr_dc_uni[diff+255]>>8);
}
}
}
static void mpeg1_encode_block(MpegEncContext *s,
DCTELEM *block,
int n)
{
int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
int code, component;
const uint16_t (*table_vlc)[2] = rl_mpeg1.table_vlc;
last_index = s->block_last_index[n];
/* DC coef */
if (s->mb_intra) {
component = (n <= 3 ? 0 : (n&1) + 1);
dc = block[0]; /* overflow is impossible */
diff = dc - s->last_dc[component];
encode_dc(s, diff, component);
s->last_dc[component] = dc;
i = 1;
if (s->intra_vlc_format)
table_vlc = rl_mpeg2.table_vlc;
} else {
/* encode the first coefficient : needs to be done here because
it is handled slightly differently */
level = block[0];
if (abs(level) == 1) {
code = ((uint32_t)level >> 31); /* the sign bit */
put_bits(&s->pb, 2, code | 0x02);
i = 1;
} else {
i = 0;
last_non_zero = -1;
goto next_coef;
}
}
/* now quantify & encode AC coefs */
last_non_zero = i - 1;
for(;i<=last_index;i++) {
j = s->intra_scantable.permutated[i];
level = block[j];
next_coef:
#if 0
if (level != 0)
dprintf(s->avctx, "level[%d]=%d\n", i, level);
#endif
/* encode using VLC */
if (level != 0) {
run = i - last_non_zero - 1;
alevel= level;
MASK_ABS(sign, alevel)
sign&=1;
if (alevel <= mpeg1_max_level[0][run]){
code= mpeg1_index_run[0][run] + alevel - 1;
/* store the vlc & sign at once */
put_bits(&s->pb, table_vlc[code][1]+1, (table_vlc[code][0]<<1) + sign);
} else {
/* escape seems to be pretty rare <5% so I do not optimize it */
put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
/* escape: only clip in this case */
put_bits(&s->pb, 6, run);
if(s->codec_id == CODEC_ID_MPEG1VIDEO){
if (alevel < 128) {
put_bits(&s->pb, 8, level & 0xff);
} else {
if (level < 0) {
put_bits(&s->pb, 16, 0x8001 + level + 255);
} else {
put_bits(&s->pb, 16, level & 0xffff);
}
}
}else{
put_bits(&s->pb, 12, level & 0xfff);
}
}
last_non_zero = i;
}
}
/* end of block */
put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
}
AVCodec mpeg1video_encoder = {
"mpeg1video",
CODEC_TYPE_VIDEO,
CODEC_ID_MPEG1VIDEO,
sizeof(MpegEncContext),
encode_init,
MPV_encode_picture,
MPV_encode_end,
.supported_framerates= ff_frame_rate_tab+1,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
.capabilities= CODEC_CAP_DELAY,
};
AVCodec mpeg2video_encoder = {
"mpeg2video",
CODEC_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO,
sizeof(MpegEncContext),
encode_init,
MPV_encode_picture,
MPV_encode_end,
.supported_framerates= ff_frame_rate_tab+1,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, -1},
.capabilities= CODEC_CAP_DELAY,
};

7
libavcodec/mpegvideo_enc.c
View File

@ -675,7 +675,8 @@ int MPV_encode_init(AVCodecContext *avctx)
h263_encode_init(s);
if (ENABLE_MSMPEG4_ENCODER && s->msmpeg4_version)
ff_msmpeg4_encode_init(s);
if (s->out_format == FMT_MPEG1)
if ((ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
&& s->out_format == FMT_MPEG1)
ff_mpeg1_encode_init(s);
/* init q matrix */
@ -1685,6 +1686,7 @@ static av_always_inline void encode_mb_internal(MpegEncContext *s, int motion_x,
switch(s->codec_id){ //FIXME funct ptr could be slightly faster
case CODEC_ID_MPEG1VIDEO:
case CODEC_ID_MPEG2VIDEO:
if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
mpeg1_encode_mb(s, s->block, motion_x, motion_y); break;
case CODEC_ID_MPEG4:
mpeg4_encode_mb(s, s->block, motion_x, motion_y); break;
@ -2146,8 +2148,10 @@ static int encode_thread(AVCodecContext *c, void *arg){
break;
case CODEC_ID_MPEG1VIDEO:
case CODEC_ID_MPEG2VIDEO:
if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER) {
ff_mpeg1_encode_slice_header(s);
ff_mpeg1_clean_buffers(s);
}
break;
case CODEC_ID_H263:
case CODEC_ID_H263P:
@ -2873,6 +2877,7 @@ static int encode_picture(MpegEncContext *s, int picture_number)
h263_encode_picture_header(s, picture_number);
break;
case FMT_MPEG1:
if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
mpeg1_encode_picture_header(s, picture_number);
break;
case FMT_H264: