avcodec/cbs_av1: use the new signed value read/write functions

[ffmpeg] / libavcodec / pnm.c

diff --git a/libavcodec/pnm.c b/libavcodec/pnm.c
index b06a6e81b5190c987e02fd04c0f0e21208707cb5..a9771710c2a68003bfd565383b34e192dcb7d05c 100644 (file)
--- a/libavcodec/pnm.c
+++ b/libavcodec/pnm.c
@@ -36,13 +36,15 @@ static void pnm_get(PNMContext *sc, char *str, int buf_size)
 {
     char *s;
     int c;
+    uint8_t *bs  = sc->bytestream;
+    const uint8_t *end = sc->bytestream_end;
 
     /* skip spaces and comments */
-    while (sc->bytestream < sc->bytestream_end) {
-        c = *sc->bytestream++;
+    while (bs < end) {
+        c = *bs++;
         if (c == '#')  {
-            while (c != '\n' && sc->bytestream < sc->bytestream_end) {
-                c = *sc->bytestream++;
+            while (c != '\n' && bs < end) {
+                c = *bs++;
             }
         } else if (!pnm_space(c)) {
             break;
@@ -50,12 +52,14 @@ static void pnm_get(PNMContext *sc, char *str, int buf_size)
     }
 
     s = str;
-    while (sc->bytestream < sc->bytestream_end && !pnm_space(c)) {
-        if ((s - str)  < buf_size - 1)
-            *s++ = c;
-        c = *sc->bytestream++;
+    while (bs < end && !pnm_space(c) && (s - str) < buf_size - 1) {
+        *s++ = c;
+        c = *bs++;
     }
     *s = '\0';
+    while (bs < end && !pnm_space(c))
+        c = *bs++;
+    sc->bytestream = bs;
 }
 
 int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s)