dv: Mark internal frame reference as const

[ffmpeg] / libavcodec / srtdec.c

diff --git a/libavcodec/srtdec.c b/libavcodec/srtdec.c
index 42eae322d15c2b05477864c474085ad6c53717c4..3bee3c726fd57476f46c12517a0693f6d9b10f6b 100644 (file)
--- a/libavcodec/srtdec.c
+++ b/libavcodec/srtdec.c
@@ -2,25 +2,26 @@
  * SubRip subtitle decoder
  * Copyright (c) 2010  Aurelien Jacobs <aurel@gnuage.org>
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "libavutil/avstring.h"
-#include "libavcore/parseutils.h"
+#include "libavutil/common.h"
+#include "libavutil/parseutils.h"
 #include "avcodec.h"
 #include "ass.h"
 
@@ -40,7 +41,7 @@ enum {
     PARAM_NUMBER
 };
 
-typedef struct {
+typedef struct SrtStack {
     char tag[128];
     char param[PARAM_NUMBER][128];
 } SrtStack;
@@ -65,7 +66,7 @@ static const char *srt_to_ass(AVCodecContext *avctx, char *out, char *out_end,
             out += snprintf(out, out_end-out, "{\\an1}{\\pos(%d,%d)}", x1, y1);
     }
 
-    for (; *in && out < out_end && !end; in++) {
+    for (; out < out_end && !end && *in; in++) {
         switch (*in) {
         case '\r':
             break;
@@ -94,7 +95,7 @@ static const char *srt_to_ass(AVCodecContext *avctx, char *out, char *out_end,
             break;
         case '<':
             tag_close = in[1] == '/';
-            if (sscanf(in+tag_close+1, "%128[^>]>%n%c", buffer, &len,&c) >= 2) {
+            if (sscanf(in+tag_close+1, "%127[^>]>%n%c", buffer, &len,&c) >= 2) {
                 if ((param = strchr(buffer, ' ')))
                     *param++ = 0;
                 if ((!tag_close && sptr < FF_ARRAY_ELEMS(stack)) ||
@@ -110,7 +111,7 @@ static const char *srt_to_ass(AVCodecContext *avctx, char *out, char *out_end,
                                     for (j=sptr-2; j>=0; j--)
                                         if (stack[j].param[i][0]) {
                                             out += snprintf(out, out_end-out,
-                                                            stack[j].param[i]);
+                                                            "%s", stack[j].param[i]);
                                             break;
                                         }
                         } else {
@@ -146,7 +147,7 @@ static const char *srt_to_ass(AVCodecContext *avctx, char *out, char *out_end,
                             for (i=0; i<PARAM_NUMBER; i++)
                                 if (stack[sptr].param[i][0])
                                     out += snprintf(out, out_end-out,
-                                                    stack[sptr].param[i]);
+                                                    "%s", stack[sptr].param[i]);
                         }
                     } else if (!buffer[1] && strspn(buffer, "bisu") == 1) {
                         out += snprintf(out, out_end-out,
@@ -211,13 +212,14 @@ static int srt_decode_frame(AVCodecContext *avctx,
     int ts_start, ts_end, x1 = -1, y1 = -1, x2 = -1, y2 = -1;
     char buffer[2048];
     const char *ptr = avpkt->data;
+    const char *end = avpkt->data + avpkt->size;
 
     if (avpkt->size <= 0)
         return avpkt->size;
 
     ff_ass_init(sub);
 
-    while (*ptr) {
+    while (ptr < end && *ptr) {
         ptr = read_ts(ptr, &ts_start, &ts_end, &x1, &y1, &x2, &y2);
         if (!ptr)
             break;
@@ -230,11 +232,11 @@ static int srt_decode_frame(AVCodecContext *avctx,
     return avpkt->size;
 }
 
-AVCodec srt_decoder = {
+AVCodec ff_srt_decoder = {
     .name         = "srt",
     .long_name    = NULL_IF_CONFIG_SMALL("SubRip subtitle"),
     .type         = AVMEDIA_TYPE_SUBTITLE,
-    .id           = CODEC_ID_SRT,
+    .id           = AV_CODEC_ID_SRT,
     .init         = ff_ass_subtitle_header_default,
     .decode       = srt_decode_frame,
 };