Fix compilation without HAVE_AVX, HAVE_YASM etc.

[ffmpeg] / libavcodec / timecode.c

diff --git a/libavcodec/timecode.c b/libavcodec/timecode.c
index 7f3b1d5ab81afeed067163ee67a1e466d64a5dbb..2e0f4a489b88b7edeb5cebddf70b4eda5f0563c0 100644 (file)
--- a/libavcodec/timecode.c
+++ b/libavcodec/timecode.c
@@ -28,7 +28,7 @@
 #include "timecode.h"
 #include "libavutil/log.h"
 
-int ff_framenum_to_drop_timecode(int frame_num)
+int avpriv_framenum_to_drop_timecode(int frame_num)
 {
     /* only works for NTSC 29.97 */
     int d = frame_num / 17982;
@@ -37,7 +37,7 @@ int ff_framenum_to_drop_timecode(int frame_num)
     return frame_num + 18 * d + 2 * ((m - 2) / 1798);
 }
 
-uint32_t ff_framenum_to_smtpe_timecode(unsigned frame, int fps, int drop)
+uint32_t avpriv_framenum_to_smpte_timecode(unsigned frame, int fps, int drop)
 {
     return (0                                    << 31) | // color frame flag
            (drop                                 << 30) | // drop  frame flag
@@ -55,9 +55,55 @@ uint32_t ff_framenum_to_smtpe_timecode(unsigned frame, int fps, int drop)
            (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
 }
 
-int ff_init_smtpe_timecode(void *avcl, struct ff_timecode *tc)
+int avpriv_check_timecode_rate(void *avcl, AVRational rate, int drop)
+{
+    int fps;
+
+    if (!rate.num || !rate.den) {
+        av_log(avcl, AV_LOG_ERROR, "Timecode frame rate must be specified\n");
+        return -1;
+    }
+    fps = (rate.num + rate.den/2) / rate.den;
+    if (drop && fps != 30) {
+        av_log(avcl, AV_LOG_ERROR, "Drop frame is only allowed with 30000/1001 FPS\n");
+        return -2;
+    }
+    switch (fps) {
+    case 24:
+    case 25:
+    case 30: return  0;
+
+    default:
+        av_log(avcl, AV_LOG_ERROR, "Timecode frame rate not supported\n");
+        return -3;
+    }
+}
+
+char *avpriv_timecode_to_string(char *buf, const struct ff_timecode *tc, unsigned frame)
+{
+    int frame_num = tc->start + frame;
+    int fps = (tc->rate.num + tc->rate.den/2) / tc->rate.den;
+    int hh, mm, ss, ff, neg = 0;
+
+    if (tc->drop)
+        frame_num = avpriv_framenum_to_drop_timecode(frame_num);
+    if (frame_num < 0) {
+        frame_num = -frame_num;
+        neg = 1;
+    }
+    ff = frame_num % fps;
+    ss = frame_num / fps        % 60;
+    mm = frame_num / (fps*60)   % 60;
+    hh = frame_num / (fps*3600);
+    snprintf(buf, 16, "%s%02d:%02d:%02d%c%02d",
+             neg ? "-" : "",
+             hh, mm, ss, tc->drop ? ';' : ':', ff);
+    return buf;
+}
+
+int avpriv_init_smpte_timecode(void *avcl, struct ff_timecode *tc)
 {
-    int hh, mm, ss, ff, fps;
+    int hh, mm, ss, ff, fps, ret;
     char c;
 
     if (sscanf(tc->str, "%d:%d:%d%c%d", &hh, &mm, &ss, &c, &ff) != 5) {
@@ -66,18 +112,35 @@ int ff_init_smtpe_timecode(void *avcl, struct ff_timecode *tc)
         return -1;
     }
 
+    tc->drop  = c != ':'; // drop if ';', '.', ...
+
+    ret = avpriv_check_timecode_rate(avcl, tc->rate, tc->drop);
+    if (ret < 0)
+        return ret;
+
     fps       = (tc->rate.num + tc->rate.den/2) / tc->rate.den;
     tc->start = (hh*3600 + mm*60 + ss) * fps + ff;
-    tc->drop  = c != ':'; // drop if ';', '.', ...
 
     if (tc->drop) { /* adjust frame number */
         int tmins = 60*hh + mm;
-        if (tc->rate.den != 1001 || fps != 30) {
-            av_log(avcl, AV_LOG_ERROR, "error: drop frame is only allowed with"
-                                       "30000/1001 FPS");
-            return -2;
-        }
         tc->start -= 2 * (tmins - tmins/10);
     }
     return 0;
 }
+
+#if FF_API_OLD_TIMECODE
+int ff_framenum_to_drop_timecode(int frame_num)
+{
+    return avpriv_framenum_to_drop_timecode(frame_num);
+}
+
+uint32_t ff_framenum_to_smtpe_timecode(unsigned frame, int fps, int drop)
+{
+    return avpriv_framenum_to_smpte_timecode(frame, fps, drop);
+}
+
+int ff_init_smtpe_timecode(void *avcl, struct ff_timecode *tc)
+{
+    return avpriv_init_smpte_timecode(avcl, tc);
+}
+#endif