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ffmpeg.wasm-core
Commit 7f93a861 authored by Vittorio Giovara's avatar Vittorio Giovara Committed by Diego Biurrun
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mpeg12enc: K&R formatting cosmetics 

Signed-off-by: 's avatarDiego Biurrun <diego@biurrun.de>
parent 66f09105
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Showing with 529 additions and 455 deletions
libavcodec/mpeg12enc.c
View file @ 7f93a861
......@@ -25,99 +25,98 @@
* MPEG1/2 encoder
*/
#include "libavutil/attributes.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bytestream.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "mpeg12.h"
#include "mpeg12data.h"
#include "bytestream.h"
#include "mpegvideo.h"
#include "libavutil/attributes.h"
#include "libavutil/log.h"
#include "libavutil/opt.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 inv_non_linear_qscale[] = {
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 const uint8_t svcd_scan_offset_placeholder[] = {
0x10, 0x0E, 0x00, 0x80, 0x81, 0x00, 0x80,
0x81, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
static uint8_t fcode_tab[MAX_MV*2+1];
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];
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*/
/* 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 int8_t mpeg1_max_level[2][64];
static av_cold 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;
for (i = 0; i < 128; i++) {
int level = i - 64;
int run;
if (!level)
continue;
for(run=0; run<64; run++){
for (run = 0; run < 64; run++) {
int len, code;
int alevel= FFABS(level);
int alevel = FFABS(level);
if (alevel > rl->max_level[0][run])
code= 111; /*rl->n*/
code = 111; /* rl->n */
else
code= rl->index_run[0][run] + alevel - 1;
code = rl->index_run[0][run] + alevel - 1;
if (code < 111 /* rl->n */) {
/* length of vlc and sign */
len= rl->table_vlc[code][1]+1;
if (code < 111) { /* rl->n */
/* length of VLC and sign */
len = rl->table_vlc[code][1] + 1;
} else {
len= rl->table_vlc[111/*rl->n*/][1]+6;
len = rl->table_vlc[111][1] + 6; /* rl->n */
if (alevel < 128) {
if (alevel < 128)
len += 8;
} else {
else
len += 16;
}
}
uni_ac_vlc_len [UNI_AC_ENC_INDEX(run, i)]= len;
uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
}
}
}
static int find_frame_rate_index(MpegEncContext *s){
static int find_frame_rate_index(MpegEncContext *s)
{
int i;
int64_t dmin= INT64_MAX;
int64_t dmin = INT64_MAX;
int64_t d;
for(i=1;i<14;i++) {
int64_t n0 = 1001LL / ff_mpeg12_frame_rate_tab[i].den * ff_mpeg12_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_UNOFFICIAL && i>=9) break;
for (i = 1; i < 14; i++) {
int64_t n0 = 1001LL / ff_mpeg12_frame_rate_tab[i].den *
ff_mpeg12_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_UNOFFICIAL &&
i >= 9)
break;
d = FFABS(n0 - n1);
if(d < dmin){
dmin=d;
s->frame_rate_index= i;
if (d < dmin) {
dmin = d;
s->frame_rate_index = i;
}
}
if(dmin)
if (dmin)
return -1;
else
return 0;
......@@ -127,43 +126,54 @@ static av_cold int encode_init(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
if(ff_MPV_encode_init(avctx) < 0)
if (ff_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);
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);
} 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){
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 */
/* Main or 4:2:2 */
avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0;
}
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");
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->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 (s->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");
av_log(avctx, AV_LOG_ERROR,
"Drop frame time code only allowed with 1001/30000 fps\n");
return -1;
}
......@@ -173,131 +183,137 @@ static av_cold int encode_init(AVCodecContext *avctx)
static void put_header(MpegEncContext *s, int header)
{
avpriv_align_put_bits(&s->pb);
put_bits(&s->pb, 16, header>>16);
put_bits(&s->pb, 16, header >> 16);
put_sbits(&s->pb, 16, header);
}
/* 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;
unsigned int vbv_buffer_size, fps, v;
int i, constraint_parameter_flag;
uint64_t time_code;
float best_aspect_error = 1E10;
float aspect_ratio = av_q2d(s->avctx->sample_aspect_ratio);
if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA)
if (aspect_ratio == 0.0)
aspect_ratio = 1.0; // pixel aspect 1.1 (VGA)
if (s->current_picture.f.key_frame) {
AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
if (s->current_picture.f.key_frame) {
AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
/* mpeg1 header repeated every gop */
put_header(s, SEQ_START_CODE);
/* mpeg1 header repeated every gop */
put_header(s, SEQ_START_CODE);
put_sbits(&s->pb, 12, s->width );
put_sbits(&s->pb, 12, s->height);
put_sbits(&s->pb, 12, s->width);
put_sbits(&s->pb, 12, s->height);
for(i=1; i<15; i++){
float error= aspect_ratio;
if(s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <=1)
error-= 1.0/ff_mpeg1_aspect[i];
else
error-= av_q2d(ff_mpeg2_aspect[i])*s->height/s->width;
for (i = 1; i < 15; i++) {
float error = aspect_ratio;
if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1)
error -= 1.0 / ff_mpeg1_aspect[i];
else
error -= av_q2d(ff_mpeg2_aspect[i]) * s->height / s->width;
error= FFABS(error);
error = FFABS(error);
if(error < best_aspect_error){
best_aspect_error= error;
s->aspect_ratio_info= i;
}
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);
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 == AV_CODEC_ID_MPEG1VIDEO)
v = 0x3ffff;
}else{
v= 0x3FFFF;
}
if (s->avctx->rc_max_rate) {
v = (s->avctx->rc_max_rate + 399) / 400;
if (v > 0x3ffff && s->codec_id == AV_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_sbits(&s->pb, 18, v);
put_bits(&s->pb, 1, 1); /* marker */
put_sbits(&s->pb, 10, vbv_buffer_size);
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 == AV_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 == AV_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, s->width >>12);
put_bits(&s->pb, 2, s->height>>12);
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
}
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_sbits(&s->pb, 18, v);
put_bits(&s->pb, 1, 1); // marker
put_sbits(&s->pb, 10, vbv_buffer_size);
constraint_parameter_flag =
s->width <= 768 &&
s->height <= 576 &&
s->mb_width * s->mb_height <= 396 &&
s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den &&
framerate.num <= framerate.den * 30 &&
s->avctx->me_range &&
s->avctx->me_range < 128 &&
vbv_buffer_size <= 20 &&
v <= 1856000 / 400 &&
s->codec_id == AV_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 == AV_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, s->width >> 12);
put_bits(&s->pb, 2, s->height >> 12);
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->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->f.coded_picture_number + s->avctx->timecode_frame_start;
s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number;
if (s->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 */
put_header(s, GOP_START_CODE);
put_bits(&s->pb, 1, s->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->f.coded_picture_number +
s->avctx->timecode_frame_start;
s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number;
if (s->drop_frame_timecode) {
/* only works for NTSC 29.97 */
int d = time_code / 17982;
int m = time_code % 17982;
/* not needed since -2,-1 / 1798 in C returns 0 */
// if (m < 2)
// m += 2;
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){
static inline void encode_mb_skip_run(MpegEncContext *s, int run)
{
while (run >= 33) {
put_bits(&s->pb, 11, 0x008);
run -= 33;
......@@ -308,23 +324,26 @@ static inline void encode_mb_skip_run(MpegEncContext *s, int run){
static av_always_inline void put_qscale(MpegEncContext *s)
{
if(s->q_scale_type){
assert(s->qscale>=1 && s->qscale <=12);
if (s->q_scale_type) {
assert(s->qscale >= 1 && s->qscale <= 12);
put_bits(&s->pb, 5, inv_non_linear_qscale[s->qscale]);
}else{
} else {
put_bits(&s->pb, 5, s->qscale);
}
}
void ff_mpeg1_encode_slice_header(MpegEncContext *s){
void ff_mpeg1_encode_slice_header(MpegEncContext *s)
{
if (s->height > 2800) {
put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
put_bits(&s->pb, 3, s->mb_y >> 7); /* slice_vertical_position_extension */
/* slice_vertical_position_extension */
put_bits(&s->pb, 3, s->mb_y >> 7);
} else {
put_header(s, SLICE_MIN_START_CODE + s->mb_y);
}
put_qscale(s);
put_bits(&s->pb, 1, 0); /* slice extra information */
/* slice extra information */
put_bits(&s->pb, 1, 0);
}
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
......@@ -336,60 +355,60 @@ void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
/* 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, 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 */
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 == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if(s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->f_code); /* forward_f_code */
// RAL: Forward f_code also needed for B-frames
if (s->pict_type == AV_PICTURE_TYPE_P ||
s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->f_code); /* forward_f_code */
else
put_bits(&s->pb, 3, 7); /* forward_f_code */
put_bits(&s->pb, 3, 7); /* forward_f_code */
}
// RAL: Backward f_code necessary for B frames
// RAL: Backward f_code necessary for B-frames
if (s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if(s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->b_code); /* backward_f_code */
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if (s->codec_id == AV_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, 3, 7); /* backward_f_code */
}
put_bits(&s->pb, 1, 0); /* extra bit picture */
put_bits(&s->pb, 1, 0); /* extra bit picture */
s->frame_pred_frame_dct = 1;
if(s->codec_id == AV_CODEC_ID_MPEG2VIDEO){
if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 8); //pic ext
if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 4, 8); /* pic ext */
if (s->pict_type == AV_PICTURE_TYPE_P ||
s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 4, s->f_code);
put_bits(&s->pb, 4, s->f_code);
}else{
} else {
put_bits(&s->pb, 8, 255);
}
if (s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 4, s->b_code);
put_bits(&s->pb, 4, s->b_code);
}else{
} 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 {
if (s->progressive_sequence)
put_bits(&s->pb, 1, 0); /* no repeat */
else
put_bits(&s->pb, 1, s->current_picture_ptr->f.top_field_first);
}
/* XXX: optimize the generation of this flag with entropy
measures */
/* 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);
......@@ -399,20 +418,21 @@ void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
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 */
/* chroma_420_type */
put_bits(&s->pb, 1, s->chroma_format ==
CHROMA_420 ? s->progressive_frame : 0);
put_bits(&s->pb, 1, s->progressive_frame);
put_bits(&s->pb, 1, 0); //composite_display_flag
put_bits(&s->pb, 1, 0); /* composite_display_flag */
}
if (s->scan_offset) {
int i;
put_header(s, USER_START_CODE);
for(i=0; i<sizeof(svcd_scan_offset_placeholder); i++){
for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
}
}
s->mb_y=0;
s->mb_y = 0;
ff_mpeg1_encode_slice_header(s);
}
......@@ -422,7 +442,8 @@ static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
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 */
/* motion_type: frame/field */
put_bits(&s->pb, 2, 2 - field_motion);
put_bits(&s->pb, 1, s->interlaced_dct);
}
}
......@@ -438,7 +459,7 @@ static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
} else {
int code, sign, bits;
int bit_size = f_or_b_code - 1;
int range = 1 << bit_size;
int range = 1 << bit_size;
/* modulo encoding */
val = sign_extend(val, 5 + bit_size);
......@@ -462,52 +483,45 @@ static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
ff_mpeg12_mbMotionVectorTable[code][0]);
put_bits(&s->pb, 1, sign);
if (bit_size > 0) {
if (bit_size > 0)
put_bits(&s->pb, bit_size, bits);
}
}
}
static inline void encode_dc(MpegEncContext *s, int diff, int component)
{
if(((unsigned) (diff+255)) >= 511){
if (((unsigned) (diff + 255)) >= 511) {
int index;
if(diff<0){
index= av_log2_16bit(-2*diff);
if (diff < 0) {
index = av_log2_16bit(-2 * diff);
diff--;
}else{
index= av_log2_16bit(2*diff);
}
if (component == 0) {
put_bits(
&s->pb,
ff_mpeg12_vlc_dc_lum_bits[index] + index,
(ff_mpeg12_vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1)));
}else{
put_bits(
&s->pb,
ff_mpeg12_vlc_dc_chroma_bits[index] + index,
(ff_mpeg12_vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1)));
} else {
index = av_log2_16bit(2 * diff);
}
}else{
if (component == 0) {
put_bits(
&s->pb,
mpeg1_lum_dc_uni[diff+255]&0xFF,
mpeg1_lum_dc_uni[diff+255]>>8);
if (component == 0)
put_bits(&s->pb,
ff_mpeg12_vlc_dc_lum_bits[index] + index,
(ff_mpeg12_vlc_dc_lum_code[index] << index) +
(diff & ((1 << index) - 1)));
else
put_bits(&s->pb,
ff_mpeg12_vlc_dc_chroma_bits[index] + index,
(ff_mpeg12_vlc_dc_chroma_code[index] << index) +
(diff & ((1 << index) - 1)));
} else {
put_bits(
&s->pb,
mpeg1_chr_dc_uni[diff+255]&0xFF,
mpeg1_chr_dc_uni[diff+255]>>8);
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,
int16_t *block,
int n)
static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
{
int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
int code, component;
......@@ -517,24 +531,24 @@ static void mpeg1_encode_block(MpegEncContext *s,
/* 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];
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 = ff_rl_mpeg2.table_vlc;
} else {
/* encode the first coefficient : needs to be done here because
it is handled slightly differently */
/* 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;
code = ((uint32_t)level >> 31); /* the sign bit */
put_bits(&s->pb, 2, code | 0x02);
i = 1;
} else {
i = 0;
i = 0;
last_non_zero = -1;
goto next_coef;
}
......@@ -543,38 +557,39 @@ static void mpeg1_encode_block(MpegEncContext *s,
/* now quantify & encode AC coefs */
last_non_zero = i - 1;
for(;i<=last_index;i++) {
j = s->intra_scantable.permutated[i];
for (; i <= last_index; i++) {
j = s->intra_scantable.permutated[i];
level = block[j];
next_coef:
next_coef:
/* encode using VLC */
if (level != 0) {
run = i - last_non_zero - 1;
alevel= level;
alevel = level;
MASK_ABS(sign, alevel);
sign&=1;
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);
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 == AV_CODEC_ID_MPEG1VIDEO){
if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
if (alevel < 128) {
put_sbits(&s->pb, 8, level);
} else {
if (level < 0) {
if (level < 0)
put_bits(&s->pb, 16, 0x8001 + level + 255);
} else {
else
put_sbits(&s->pb, 16, level);
}
}
}else{
} else {
put_sbits(&s->pb, 12, level);
}
}
......@@ -586,340 +601,399 @@ static void mpeg1_encode_block(MpegEncContext *s,
}
static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
int16_t block[6][64],
int motion_x, int motion_y,
int mb_block_count)
int16_t 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;
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++) {
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 == AV_CODEC_ID_MPEG1VIDEO)) &&
(mb_x != s->mb_width - 1 ||
(mb_y != s->mb_height - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
(s->pict_type == AV_PICTURE_TYPE_B && 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->pict_type == AV_PICTURE_TYPE_B && 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 == AV_PICTURE_TYPE_P){
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;
if (s->pict_type == AV_PICTURE_TYPE_P) {
s->last_mv[0][0][0] =
s->last_mv[0][0][1] =
s->last_mv[0][1][0] =
s->last_mv[0][1][1] = 0;
}
} else {
if(first_mb){
if (first_mb) {
assert(s->mb_skip_run == 0);
encode_mb_skip_run(s, s->mb_x);
}else{
} else {
encode_mb_skip_run(s, s->mb_skip_run);
}
if (s->pict_type == AV_PICTURE_TYPE_I) {
if(s->dquant && cbp){
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
if (s->dquant && cbp) {
/* macroblock_type: macroblock_quant = 1 */
put_mb_modes(s, 2, 1, 0, 0);
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 0, 0); /* macroblock_type : macroblock_quant = 0 */
} else {
/* macroblock_type: macroblock_quant = 0 */
put_mb_modes(s, 1, 1, 0, 0);
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->misc_bits += get_bits_diff(s);
s->i_count++;
} else if (s->mb_intra) {
if(s->dquant && cbp){
if (s->dquant && cbp) {
put_mb_modes(s, 6, 0x01, 0, 0);
put_qscale(s);
}else{
} else {
put_mb_modes(s, 5, 0x03, 0, 0);
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->misc_bits += get_bits_diff(s);
s->i_count++;
memset(s->last_mv, 0, sizeof(s->last_mv));
} else if (s->pict_type == AV_PICTURE_TYPE_P) {
if(s->mv_type == MV_TYPE_16X16){
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 */
if ((motion_x | motion_y) == 0) {
if (s->dquant) {
/* macroblock_pattern & quant */
put_mb_modes(s, 5, 1, 0, 0);
put_qscale(s);
}else{
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_pattern only */
} else {
/* macroblock_pattern only */
put_mb_modes(s, 2, 1, 0, 0);
}
s->misc_bits+= get_bits_diff(s);
s->misc_bits += get_bits_diff(s);
} else {
if(s->dquant){
put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */
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 */
} 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);
s->misc_bits += get_bits_diff(s);
// RAL: f_code parameter added
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);
s->mv_bits += get_bits_diff(s);
}
} else {
put_bits(&s->pb, 3, 1); /* motion only */
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);
put_bits(&s->pb, 2, 2); /* motion_type: frame */
s->misc_bits += get_bits_diff(s);
// RAL: f_code parameter added
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);
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{
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 */
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_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 */
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++){
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];
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);
s->mv_bits += get_bits_diff(s);
}
if(cbp) {
if (cbp) {
if (s->chroma_y_shift) {
put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp][1], ff_mpeg12_mbPatTable[cbp][0]);
put_bits(&s->pb,
ff_mpeg12_mbPatTable[cbp][1],
ff_mpeg12_mbPatTable[cbp][0]);
} else {
put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp>>2][1], ff_mpeg12_mbPatTable[cbp>>2][0]);
put_bits(&s->pb,
ff_mpeg12_mbPatTable[cbp >> 2][1],
ff_mpeg12_mbPatTable[cbp >> 2][0]);
put_sbits(&s->pb, 2, cbp);
}
}
s->f_count++;
} else{
if(s->mv_type == MV_TYPE_16X16){
if (cbp){ // With coded bloc pattern
} else {
if (s->mv_type == MV_TYPE_16X16) {
if (cbp) { // With coded bloc pattern
if (s->dquant) {
if(s->mv_dir == MV_DIR_FORWARD)
if (s->mv_dir == MV_DIR_FORWARD)
put_mb_modes(s, 6, 3, 1, 0);
else
put_mb_modes(s, 8-s->mv_dir, 2, 1, 0);
put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
put_qscale(s);
} else {
put_mb_modes(s, 5-s->mv_dir, 3, 1, 0);
put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
}
}else{ // No coded bloc pattern
put_bits(&s->pb, 5-s->mv_dir, 2);
} else { // No coded bloc pattern
put_bits(&s->pb, 5 - 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];
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];
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{
} else {
assert(s->mv_type == MV_TYPE_FIELD);
assert(!s->frame_pred_frame_dct);
if (cbp){ // With coded bloc pattern
if (cbp) { // With coded bloc pattern
if (s->dquant) {
if(s->mv_dir == MV_DIR_FORWARD)
if (s->mv_dir == MV_DIR_FORWARD)
put_mb_modes(s, 6, 3, 1, 1);
else
put_mb_modes(s, 8-s->mv_dir, 2, 1, 1);
put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
put_qscale(s);
} else {
put_mb_modes(s, 5-s->mv_dir, 3, 1, 1);
put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
}
}else{ // No coded bloc pattern
put_bits(&s->pb, 5-s->mv_dir, 2);
put_bits(&s->pb, 2, 1); /* motion_type: field */
} else { // No coded bloc pattern
put_bits(&s->pb, 5 - 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++){
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];
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] = s->mv[0][i][1] * 2;
}
s->f_count++;
}
if (s->mv_dir&MV_DIR_BACKWARD){
for(i=0; i<2; i++){
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];
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] = s->mv[1][i][1] * 2;
}
s->b_count++;
}
}
s->mv_bits += get_bits_diff(s);
if(cbp) {
if (cbp) {
if (s->chroma_y_shift) {
put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp][1], ff_mpeg12_mbPatTable[cbp][0]);
put_bits(&s->pb,
ff_mpeg12_mbPatTable[cbp][1],
ff_mpeg12_mbPatTable[cbp][0]);
} else {
put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp>>2][1], ff_mpeg12_mbPatTable[cbp>>2][0]);
put_bits(&s->pb,
ff_mpeg12_mbPatTable[cbp >> 2][1],
ff_mpeg12_mbPatTable[cbp >> 2][0]);
put_sbits(&s->pb, 2, cbp);
}
}
}
for(i=0;i<mb_block_count;i++) {
if (cbp & (1 << (mb_block_count - 1 - i))) {
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);
if (s->mb_intra)
s->i_tex_bits += get_bits_diff(s);
else
s->p_tex_bits+= get_bits_diff(s);
s->p_tex_bits += get_bits_diff(s);
}
}
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t 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);
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);
}
av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
{
static int done=0;
static int done = 0;
ff_mpeg12_common_init(s);
if(!done){
if (!done) {
int f_code;
int mv;
int i;
done=1;
done = 1;
ff_init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
ff_init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
for(i=0; i<64; i++)
{
mpeg1_max_level[0][i]= ff_rl_mpeg1.max_level[0][i];
mpeg1_index_run[0][i]= ff_rl_mpeg1.index_run[0][i];
for (i = 0; i < 64; i++) {
mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i];
mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i];
}
init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
if(s->intra_vlc_format)
if (s->intra_vlc_format)
init_uni_ac_vlc(&ff_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= ff_mpeg12_vlc_dc_lum_bits[index] + index;
code= (ff_mpeg12_vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1));
mpeg1_lum_dc_uni[i+255]= bits + (code<<8);
bits= ff_mpeg12_vlc_dc_chroma_bits[index] + index;
code= (ff_mpeg12_vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1));
mpeg1_chr_dc_uni[i+255]= bits + (code<<8);
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 = ff_mpeg12_vlc_dc_lum_bits[index] + index;
code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
(diff & ((1 << index) - 1));
mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
code = (ff_mpeg12_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++){
for (f_code = 1; f_code <= MAX_FCODE; f_code++)
for (mv = -MAX_MV; mv <= MAX_MV; mv++) {
int len;
if(mv==0) len= ff_mpeg12_mbMotionVectorTable[0][1];
else{
if (mv == 0) {
len = ff_mpeg12_mbMotionVectorTable[0][1];
} else {
int val, bit_size, code;
bit_size = f_code - 1;
val=mv;
val = mv;
if (val < 0)
val = -val;
val--;
code = (val >> bit_size) + 1;
if(code<17){
len= ff_mpeg12_mbMotionVectorTable[code][1] + 1 + bit_size;
}else{
len= ff_mpeg12_mbMotionVectorTable[16][1] + 2 + bit_size;
}
if (code < 17)
len = ff_mpeg12_mbMotionVectorTable[code][1] +
1 + bit_size;
else
len = ff_mpeg12_mbMotionVectorTable[16][1] +
2 + bit_size;
}
mv_penalty[f_code][mv+MAX_MV]= len;
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;
}
}
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 == AV_CODEC_ID_MPEG1VIDEO){
s->min_qcoeff=-255;
s->max_qcoeff= 255;
}else{
s->min_qcoeff=-2047;
s->max_qcoeff= 2047;
s->me.mv_penalty = mv_penalty;
s->fcode_tab = fcode_tab;
if (s->codec_id == AV_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;
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->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;
s->inter_ac_vlc_length =
s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
}
#define OFFSET(x) offsetof(MpegEncContext, x)
#define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
#define COMMON_OPTS\
{ "intra_vlc", "Use MPEG-2 intra VLC table.", OFFSET(intra_vlc_format), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },\
{ "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE}, \
{ "scan_offset", "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
#define COMMON_OPTS \
{ "intra_vlc", "Use MPEG-2 intra VLC table.", \
OFFSET(intra_vlc_format), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \
{ "drop_frame_timecode", "Timecode is in drop frame format.", \
OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \
{ "scan_offset", "Reserve space for SVCD scan offset user data.", \
OFFSET(scan_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
static const AVOption mpeg1_options[] = {
COMMON_OPTS
......@@ -929,18 +1003,18 @@ static const AVOption mpeg1_options[] = {
static const AVOption mpeg2_options[] = {
COMMON_OPTS
{ "non_linear_quant", "Use nonlinear quantizer.", OFFSET(q_scale_type), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "non_linear_quant", "Use nonlinear quantizer.", OFFSET(q_scale_type), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
FF_MPV_COMMON_OPTS
{ NULL },
};
#define mpeg12_class(x)\
static const AVClass mpeg## x ##_class = {\
.class_name = "mpeg" #x "video encoder",\
.item_name = av_default_item_name,\
.option = mpeg## x ##_options,\
.version = LIBAVUTIL_VERSION_INT,\
#define mpeg12_class(x) \
static const AVClass mpeg ## x ## _class = { \
.class_name = "mpeg" # x "video encoder", \
.item_name = av_default_item_name, \
.option = mpeg ## x ## _options, \
.version = LIBAVUTIL_VERSION_INT, \
};
mpeg12_class(1)
......@@ -955,8 +1029,8 @@ AVCodec ff_mpeg1video_encoder = {
.encode2 = ff_MPV_encode_picture,
.close = ff_MPV_encode_end,
.supported_framerates = ff_mpeg12_frame_rate_tab + 1,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE },
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE },
.capabilities = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
.long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
.priv_class = &mpeg1_class,
......@@ -971,9 +1045,9 @@ AVCodec ff_mpeg2video_encoder = {
.encode2 = ff_MPV_encode_picture,
.close = ff_MPV_encode_end,
.supported_framerates = ff_mpeg12_frame_rate_tab + 1,
.pix_fmts = (const enum AVPixelFormat[]){
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE
},
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV422P,
AV_PIX_FMT_NONE },
.capabilities = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
.long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
.priv_class = &mpeg2_class,
......
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