Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavformat / ipmovie.c

diff --git a/libavformat/ipmovie.c b/libavformat/ipmovie.c
index 9b42ee294801e37e3b84631dce08ce4efe31e42b..bb42a12e62abf58ca69401c13b36bb1f23b24464 100644 (file)
--- a/libavformat/ipmovie.c
+++ b/libavformat/ipmovie.c
@@ -115,7 +115,7 @@ static int load_ipmovie_packet(IPMVEContext *s, AVIOContext *pb,
 
     int chunk_type;
 
-    if (s->audio_chunk_offset) {
+    if (s->audio_chunk_offset && s->audio_channels && s->audio_bits) {
 
         /* adjust for PCM audio by skipping chunk header */
         if (s->audio_type != CODEC_ID_INTERPLAY_DPCM) {
@@ -456,7 +456,8 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
                 r = scratch[j++] * 4;
                 g = scratch[j++] * 4;
                 b = scratch[j++] * 4;
-                s->palette[i] = (r << 16) | (g << 8) | (b);
+                s->palette[i] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
+                s->palette[i] |= s->palette[i] >> 6 & 0x30303;
             }
             s->has_palette = 1;
             break;
@@ -524,7 +525,7 @@ static int ipmovie_read_header(AVFormatContext *s,
     AVPacket pkt;
     AVStream *st;
     unsigned char chunk_preamble[CHUNK_PREAMBLE_SIZE];
-    int chunk_type;
+    int chunk_type, i;
     uint8_t signature_buffer[sizeof(signature)];
 
     avio_read(pb, signature_buffer, sizeof(signature_buffer));
@@ -542,6 +543,9 @@ static int ipmovie_read_header(AVFormatContext *s,
     /* on the first read, this will position the stream at the first chunk */
     ipmovie->next_chunk_offset = avio_tell(pb) + 4;
 
+    for (i = 0; i < 256; i++)
+        ipmovie->palette[i] = 0xFFU << 24;
+
     /* process the first chunk which should be CHUNK_INIT_VIDEO */
     if (process_ipmovie_chunk(ipmovie, pb, &pkt) != CHUNK_INIT_VIDEO)
         return AVERROR_INVALIDDATA;