avformat/http: escape unsafe URL path in HTTP request

[ffmpeg] / libavformat / dsfdec.c

diff --git a/libavformat/dsfdec.c b/libavformat/dsfdec.c
index 41538fd83c0c16397178a57160443b6bd166403e..52cddab2c8b75123e32a3d5224dd1c1c2061518e 100644 (file)
--- a/libavformat/dsfdec.c
+++ b/libavformat/dsfdec.c
@@ -26,9 +26,11 @@
 
 typedef struct {
     uint64_t data_end;
+    uint64_t audio_size;
+    uint64_t data_size;
 } DSFContext;
 
-static int dsf_probe(AVProbeData *p)
+static int dsf_probe(const AVProbeData *p)
 {
     if (p->buf_size < 12 || memcmp(p->buf, "DSD ", 4) || AV_RL64(p->buf + 4) != 28)
         return 0;
@@ -120,7 +122,7 @@ static int dsf_read_header(AVFormatContext *s)
         return AVERROR_INVALIDDATA;
     }
 
-    avio_skip(pb, 8);
+    dsf->audio_size = avio_rl64(pb) / 8 * st->codecpar->channels;
     st->codecpar->block_align = avio_rl32(pb);
     if (st->codecpar->block_align > INT_MAX / st->codecpar->channels) {
         avpriv_request_sample(s, "block_align overflow");
@@ -128,6 +130,7 @@ static int dsf_read_header(AVFormatContext *s)
     }
     st->codecpar->block_align *= st->codecpar->channels;
     st->codecpar->bit_rate = st->codecpar->channels * st->codecpar->sample_rate * 8LL;
+    avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
     avio_skip(pb, 4);
 
     /* data chunk */
@@ -135,7 +138,9 @@ static int dsf_read_header(AVFormatContext *s)
     dsf->data_end = avio_tell(pb);
     if (avio_rl32(pb) != MKTAG('d', 'a', 't', 'a'))
         return AVERROR_INVALIDDATA;
-    dsf->data_end += avio_rl64(pb);
+    dsf->data_size = avio_rl64(pb) - 12;
+    dsf->data_end += dsf->data_size + 12;
+    s->internal->data_offset = avio_tell(pb);
 
     return 0;
 }
@@ -146,12 +151,52 @@ static int dsf_read_packet(AVFormatContext *s, AVPacket *pkt)
     AVIOContext *pb = s->pb;
     AVStream *st = s->streams[0];
     int64_t pos = avio_tell(pb);
+    int ret;
 
     if (pos >= dsf->data_end)
         return AVERROR_EOF;
 
+    if (dsf->data_size > dsf->audio_size) {
+        int last_packet = pos == (dsf->data_end - st->codecpar->block_align);
+
+        if (last_packet) {
+            int64_t data_pos = pos - s->internal->data_offset;
+            int64_t packet_size = dsf->audio_size - data_pos;
+            int64_t skip_size = dsf->data_size - data_pos - packet_size;
+            uint8_t *dst;
+            int ch, ret;
+
+            if (packet_size <= 0 || skip_size <= 0)
+                return AVERROR_INVALIDDATA;
+
+            if ((ret = av_new_packet(pkt, packet_size)) < 0)
+                return ret;
+            dst = pkt->data;
+            for (ch = 0; ch < st->codecpar->channels; ch++) {
+                ret = avio_read(pb, dst,  packet_size / st->codecpar->channels);
+                if (ret < packet_size / st->codecpar->channels)
+                    return AVERROR_EOF;
+
+                dst += ret;
+                avio_skip(pb, skip_size / st->codecpar->channels);
+            }
+
+            pkt->pos = pos;
+            pkt->stream_index = 0;
+            pkt->pts = (pos - s->internal->data_offset) / st->codecpar->channels;
+            pkt->duration = packet_size / st->codecpar->channels;
+            return 0;
+        }
+    }
+    ret = av_get_packet(pb, pkt, FFMIN(dsf->data_end - pos, st->codecpar->block_align));
+    if (ret < 0)
+        return ret;
+
     pkt->stream_index = 0;
-    return av_get_packet(pb, pkt, FFMIN(dsf->data_end - pos, st->codecpar->block_align));
+    pkt->pts = (pos - s->internal->data_offset) / st->codecpar->channels;
+    pkt->duration = st->codecpar->block_align / st->codecpar->channels;
+
+    return 0;
 }
 
 AVInputFormat ff_dsf_demuxer = {