Changeset 463 for libmpc/trunk/libmpcdec/mpc_demux.c

Timestamp:

07/13/10 12:34:11 (14 years ago)

Author:

r2d

Message:

check malloc return value

File:

• libmpc/trunk/libmpcdec/mpc_demux.c (modified) (1 diff)

libmpc/trunk/libmpcdec/mpc_demux.c

@@ -354 +354 @@
                 char * ptag;
                 d->chap = malloc(sizeof(mpc_chap_info) * d->chap_nb + tag_size);
-                ptag = (char*)(d->chap + d->chap_nb);
-
-                mpc_demux_seek(d, d->chap_pos, 11);
-                size = mpc_bits_get_block(&d->bits_reader, &b);
-                while (memcmp(b.key, "CT", 2) == 0) {
-                        mpc_demux_fill(d, 11 + (mpc_uint32_t) b.size, 0);
-                        size = mpc_bits_get_size(&d->bits_reader, &d->chap[i].sample) + 4;
-                        d->chap[i].gain = (mpc_uint16_t) mpc_bits_read(&d->bits_reader, 16);
-                        d->chap[i].peak = (mpc_uint16_t) mpc_bits_read(&d->bits_reader, 16);
-                        memcpy(ptag, d->bits_reader.buff + ((8 - d->bits_reader.count) >> 3), b.size - size);
-                        d->bits_reader.buff += b.size - size;
-                        d->chap[i].tag_size = b.size - size;
-                        d->chap[i].tag = ptag;
-                        ptag += b.size - size;
-                        i++;
+                if (d->chap != 0) {
+                        ptag = (char*)(d->chap + d->chap_nb);
+
+                        mpc_demux_seek(d, d->chap_pos, 11);
                         size = mpc_bits_get_block(&d->bits_reader, &b);
+                        while (memcmp(b.key, "CT", 2) == 0) {
+                                mpc_demux_fill(d, 11 + (mpc_uint32_t) b.size, 0);
+                                size = mpc_bits_get_size(&d->bits_reader, &d->chap[i].sample) + 4;
+                                d->chap[i].gain = (mpc_uint16_t) mpc_bits_read(&d->bits_reader, 16);
+                                d->chap[i].peak = (mpc_uint16_t) mpc_bits_read(&d->bits_reader, 16);
+                                memcpy(ptag, d->bits_reader.buff + ((8 - d->bits_reader.count) >> 3), b.size - size);
+                                d->bits_reader.buff += b.size - size;
+                                d->chap[i].tag_size = b.size - size;
+                                d->chap[i].tag = ptag;
+                                ptag += b.size - size;
+                                i++;
+                                size = mpc_bits_get_block(&d->bits_reader, &b);
+                        }
+                } else {
+                        d->chap_nb = 0; // malloc failed, chapters will not be available
                 }
         }