#include "avcodec.h"
#include "dsputil.h"
+#include "mathops.h"
#include "mpegvideo.h"
#include "mpeg12.h"
for(i=0; i<128; i++){
int level= i-64;
int run;
+ if (!level)
+ continue;
for(run=0; run<64; run++){
- int len, bits, code;
+ int len, code;
int alevel= FFABS(level);
- int sign= (level>>31)&1;
if (alevel > rl->max_level[0][run])
code= 111; /*rl->n*/
code= rl->index_run[0][run] + alevel - 1;
if (code < 111 /* rl->n */) {
- /* store the vlc & sign at once */
+ /* length of vlc and sign */
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;
+ len += 8;
} else {
- bits<<=16; len+=16;
- bits|= level & 0xff;
- if (level < 0) {
- bits|= 0x8001 + level + 255;
- } else {
- bits|= level & 0xffff;
- }
+ len += 16;
}
}
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 n0= 1001LL/avpriv_frame_rate_tab[i].den*avpriv_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;
{
MpegEncContext *s = avctx->priv_data;
- if(MPV_encode_init(avctx) < 0)
+ if(ff_MPV_encode_init(avctx) < 0)
return -1;
if(find_frame_rate_index(s) < 0){
}
}
- if((avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) && s->frame_rate_index != 4){
+ 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");
return -1;
}
static void put_header(MpegEncContext *s, int header)
{
- align_put_bits(&s->pb);
+ avpriv_align_put_bits(&s->pb);
put_bits(&s->pb, 16, header>>16);
put_sbits(&s->pb, 16, header);
}
if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA)
if (s->current_picture.f.key_frame) {
- AVRational framerate= ff_frame_rate_tab[s->frame_rate_index];
+ AVRational framerate= avpriv_frame_rate_tab[s->frame_rate_index];
/* mpeg1 header repeated every gop */
put_header(s, SEQ_START_CODE);
}
put_header(s, GOP_START_CODE);
- put_bits(&s->pb, 1, !!(s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE)); /* drop frame flag */
+ 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->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) {
+ if (s->drop_frame_timecode) {
/* only works for NTSC 29.97 */
int d = time_code / 17982;
int m = time_code % 17982;
put_bits(&s->pb, 1, 0); /* slice extra information */
}
-void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
+void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
{
mpeg1_encode_sequence_header(s);
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){
+ if (s->scan_offset) {
int i;
put_header(s, USER_START_CODE);
}
}
-void mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
+void ff_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);
int bit_size = f_or_b_code - 1;
int range = 1 << bit_size;
/* modulo encoding */
- int l= INT_BIT - 5 - bit_size;
- val= (val<<l)>>l;
+ val = sign_extend(val, 5 + bit_size);
if (val >= 0) {
val--;
int i;
done=1;
- init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
- init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[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++)
{
#define OFFSET(x) offsetof(MpegEncContext, x)
#define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
-static const AVOption options[] = {
- { "intra_vlc", "Use MPEG-2 intra VLC table.", OFFSET(intra_vlc_format), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+#define COMMON_OPTS\
+ { "intra_vlc", "Use MPEG-2 intra VLC table.", OFFSET(intra_vlc_format), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },\
+ { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE}, \
+ { "scan_offset", "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+
+static const AVOption mpeg1_options[] = {
+ COMMON_OPTS
+ { NULL },
+};
+
+static const AVOption mpeg2_options[] = {
+ COMMON_OPTS
+ { "non_linear_quant", "Use nonlinear quantizer.", OFFSET(q_scale_type), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+ { "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
{ NULL },
};
static const AVClass mpeg## x ##_class = {\
.class_name = "mpeg" #x "video encoder",\
.item_name = av_default_item_name,\
- .option = options,\
+ .option = mpeg## x ##_options,\
.version = LIBAVUTIL_VERSION_INT,\
};
.id = CODEC_ID_MPEG1VIDEO,
.priv_data_size = sizeof(MpegEncContext),
.init = encode_init,
- .encode = MPV_encode_picture,
- .close = MPV_encode_end,
- .supported_framerates= ff_frame_rate_tab+1,
+ .encode = ff_MPV_encode_picture,
+ .close = ff_MPV_encode_end,
+ .supported_framerates= avpriv_frame_rate_tab+1,
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
.capabilities= CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
.long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
.id = CODEC_ID_MPEG2VIDEO,
.priv_data_size = sizeof(MpegEncContext),
.init = encode_init,
- .encode = MPV_encode_picture,
- .close = MPV_encode_end,
- .supported_framerates= ff_frame_rate_tab+1,
+ .encode = ff_MPV_encode_picture,
+ .close = ff_MPV_encode_end,
+ .supported_framerates= avpriv_frame_rate_tab+1,
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE},
.capabilities= CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
.long_name= NULL_IF_CONFIG_SMALL("MPEG-2 video"),
projects / ffmpeg / blobdiff