* Copyright (c) 2000,2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "dsputil.h"
+#include "mathops.h"
#include "mpegvideo.h"
#include "mpeg12.h"
#include "mpeg12data.h"
#include "bytestream.h"
-
+#include "timecode.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
+#include "libavutil/avassert.h"
static const uint8_t inv_non_linear_qscale[13] = {
0, 2, 4, 6, 8,
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;
}
}
+ s->drop_frame_timecode = s->tc.drop = s->drop_frame_timecode || !!(avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE);
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;
}
+ if (s->tc.str) {
+ s->tc.rate = avpriv_frame_rate_tab[s->frame_rate_index];
+ if (ff_init_smtpe_timecode(s, &s->tc) < 0)
+ return -1;
+ s->avctx->timecode_frame_start = s->tc.start;
+ }
return 0;
}
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);
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);
- }
+ av_assert0(s->drop_frame_timecode == s->tc.drop);
+ if (s->tc.drop)
+ time_code = ff_framenum_to_drop_timecode(time_code);
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);
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--;
#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), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },\
- { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE}, \
- { "scan_offset", "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+ {TIMECODE_OPT(MpegEncContext,\
+ AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)},\
+ { "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
static const AVOption mpeg2_options[] = {
COMMON_OPTS
- { "non_linear_quant", "Use nonlinear quantizer.", OFFSET(q_scale_type), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },
- { "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+ { "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 },
};
.init = encode_init,
.encode = MPV_encode_picture,
.close = MPV_encode_end,
- .supported_framerates= ff_frame_rate_tab+1,
+ .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"),
.init = encode_init,
.encode = MPV_encode_picture,
.close = MPV_encode_end,
- .supported_framerates= ff_frame_rate_tab+1,
+ .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