Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavcodec / mpeg12enc.c

diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
index 81d366d8100b6d7196543e8083d18a73173ae510..71c26fa34b31d8bba73162425ce886a2c2bf872b 100644 (file)
--- a/libavcodec/mpeg12enc.c
+++ b/libavcodec/mpeg12enc.c
@@ -3,20 +3,20 @@
  * 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
  */
 
@@ -33,9 +33,10 @@
 #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,
@@ -166,11 +167,21 @@ static av_cold int encode_init(AVCodecContext *avctx)
         }
     }
 
+    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 (avpriv_init_smpte_timecode(s, &s->tc) < 0)
+            return -1;
+        s->drop_frame_timecode = s->tc.drop;
+        s->avctx->timecode_frame_start = s->tc.start;
+    } else {
+        s->avctx->timecode_frame_start = 0; // default is -1
+    }
     return 0;
 }
 
@@ -284,13 +295,9 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
             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 = avpriv_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);
@@ -921,6 +928,8 @@ static void mpeg1_encode_block(MpegEncContext *s,
 #define OFFSET(x) offsetof(MpegEncContext, x)
 #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
 #define COMMON_OPTS\
+        {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 },
@@ -958,7 +967,7 @@ AVCodec ff_mpeg1video_encoder = {
     .close          = 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,
+    .capabilities= CODEC_CAP_DELAY,
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
     .priv_class     = &mpeg1_class,
 };