move DTS demuxer to its own file

Originally committed as revision 24972 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/Makefile

@@ -57,7 +57,7 @@ OBJS-$(CONFIG_DIRAC_MUXER)               += raw.o
 OBJS-$(CONFIG_DNXHD_DEMUXER)             += raw.o
 OBJS-$(CONFIG_DNXHD_MUXER)               += raw.o
 OBJS-$(CONFIG_DSICIN_DEMUXER)            += dsicin.o
-OBJS-$(CONFIG_DTS_DEMUXER)               += raw.o
+OBJS-$(CONFIG_DTS_DEMUXER)               += dtsdec.o raw.o
 OBJS-$(CONFIG_DTS_MUXER)                 += raw.o
 OBJS-$(CONFIG_DV_DEMUXER)                += dv.o
 OBJS-$(CONFIG_DV_MUXER)                  += dvenc.o

libavformat/dtsdec.c

@@ -0,0 +1,78 @@
+/*
+ * RAW DTS demuxer
+ * Copyright (c) 2008 Benjamin Larsson
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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,
+ * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavcodec/bytestream.h"
+#include "avformat.h"
+#include "raw.h"
+
+#define DCA_MARKER_14B_BE 0x1FFFE800
+#define DCA_MARKER_14B_LE 0xFF1F00E8
+#define DCA_MARKER_RAW_BE 0x7FFE8001
+#define DCA_MARKER_RAW_LE 0xFE7F0180
+
+static int dts_probe(AVProbeData *p)
+{
+    const uint8_t *buf, *bufp;
+    uint32_t state = -1;
+    int markers[3] = {0};
+    int sum, max;
+
+    buf = p->buf;
+
+    for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
+        bufp = buf;
+        state = (state << 16) | bytestream_get_be16(&bufp);
+
+        /* regular bitstream */
+        if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)
+            markers[0]++;
+
+        /* 14 bits big-endian bitstream */
+        if (state == DCA_MARKER_14B_BE)
+            if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
+                markers[1]++;
+
+        /* 14 bits little-endian bitstream */
+        if (state == DCA_MARKER_14B_LE)
+            if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
+                markers[2]++;
+    }
+    sum = markers[0] + markers[1] + markers[2];
+    max = markers[1] > markers[0];
+    max = markers[2] > markers[max] ? 2 : max;
+    if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&
+        markers[max] * 4 > sum * 3)
+        return AVPROBE_SCORE_MAX/2+1;
+
+    return 0;
+}
+
+AVInputFormat dts_demuxer = {
+    "dts",
+    NULL_IF_CONFIG_SMALL("raw DTS"),
+    0,
+    dts_probe,
+    ff_raw_audio_read_header,
+    ff_raw_read_partial_packet,
+    .flags= AVFMT_GENERIC_INDEX,
+    .extensions = "dts",
+    .value = CODEC_ID_DTS,
+};

libavformat/raw.c

@@ -233,7 +233,7 @@ int pcm_read_seek(AVFormatContext *s,
     return 0;
 }
 
-static int audio_read_header(AVFormatContext *s,
+int ff_raw_audio_read_header(AVFormatContext *s,
                              AVFormatParameters *ap)
 {
     AVStream *st = av_new_stream(s, 0);
@@ -519,49 +519,6 @@ static int h261_probe(AVProbeData *p)
 }
 #endif
 
-#if CONFIG_DTS_DEMUXER
-#define DCA_MARKER_14B_BE 0x1FFFE800
-#define DCA_MARKER_14B_LE 0xFF1F00E8
-#define DCA_MARKER_RAW_BE 0x7FFE8001
-#define DCA_MARKER_RAW_LE 0xFE7F0180
-static int dts_probe(AVProbeData *p)
-{
-    const uint8_t *buf, *bufp;
-    uint32_t state = -1;
-    int markers[3] = {0};
-    int sum, max;
-
-    buf = p->buf;
-
-    for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
-        bufp = buf;
-        state = (state << 16) | bytestream_get_be16(&bufp);
-
-        /* regular bitstream */
-        if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)
-            markers[0]++;
-
-        /* 14 bits big-endian bitstream */
-        if (state == DCA_MARKER_14B_BE)
-            if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
-                markers[1]++;
-
-        /* 14 bits little-endian bitstream */
-        if (state == DCA_MARKER_14B_LE)
-            if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
-                markers[2]++;
-    }
-    sum = markers[0] + markers[1] + markers[2];
-    max = markers[1] > markers[0];
-    max = markers[2] > markers[max] ? 2 : max;
-    if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&
-        markers[max] * 4 > sum * 3)
-        return AVPROBE_SCORE_MAX/2+1;
-
-    return 0;
-}
-#endif
-
 #if CONFIG_DIRAC_DEMUXER
 static int dirac_probe(AVProbeData *p)
 {
@@ -656,7 +613,7 @@ AVInputFormat ac3_demuxer = {
     NULL_IF_CONFIG_SMALL("raw AC-3"),
     0,
     ac3_probe,
-    audio_read_header,
+    ff_raw_audio_read_header,
     ff_raw_read_partial_packet,
     .flags= AVFMT_GENERIC_INDEX,
     .extensions = "ac3",
@@ -735,20 +692,6 @@ AVOutputFormat dnxhd_muxer = {
 };
 #endif
 
-#if CONFIG_DTS_DEMUXER
-AVInputFormat dts_demuxer = {
-    "dts",
-    NULL_IF_CONFIG_SMALL("raw DTS"),
-    0,
-    dts_probe,
-    audio_read_header,
-    ff_raw_read_partial_packet,
-    .flags= AVFMT_GENERIC_INDEX,
-    .extensions = "dts",
-    .value = CODEC_ID_DTS,
-};
-#endif
-
 #if CONFIG_DTS_MUXER
 AVOutputFormat dts_muxer = {
     "dts",
@@ -770,7 +713,7 @@ AVInputFormat eac3_demuxer = {
     NULL_IF_CONFIG_SMALL("raw E-AC-3"),
     0,
     eac3_probe,
-    audio_read_header,
+    ff_raw_audio_read_header,
     ff_raw_read_partial_packet,
     .flags= AVFMT_GENERIC_INDEX,
     .extensions = "eac3",
@@ -799,7 +742,7 @@ AVInputFormat gsm_demuxer = {
     NULL_IF_CONFIG_SMALL("raw GSM"),
     0,
     NULL,
-    audio_read_header,
+    ff_raw_audio_read_header,
     ff_raw_read_partial_packet,
     .flags= AVFMT_GENERIC_INDEX,
     .extensions = "gsm",
@@ -987,7 +930,7 @@ AVInputFormat mlp_demuxer = {
     NULL_IF_CONFIG_SMALL("raw MLP"),
     0,
     NULL,
-    audio_read_header,
+    ff_raw_audio_read_header,
     ff_raw_read_partial_packet,
     .flags= AVFMT_GENERIC_INDEX,
     .extensions = "mlp",
@@ -1028,7 +971,7 @@ AVInputFormat truehd_demuxer = {
     NULL_IF_CONFIG_SMALL("raw TrueHD"),
     0,
     NULL,
-    audio_read_header,
+    ff_raw_audio_read_header,
     ff_raw_read_partial_packet,
     .flags= AVFMT_GENERIC_INDEX,
     .extensions = "thd",
@@ -1157,7 +1100,7 @@ AVInputFormat shorten_demuxer = {
     NULL_IF_CONFIG_SMALL("raw Shorten"),
     0,
     NULL,
-    audio_read_header,
+    ff_raw_audio_read_header,
     ff_raw_read_partial_packet,
     .flags= AVFMT_GENERIC_INDEX,
     .extensions = "shn",

libavformat/raw.h

@@ -31,4 +31,6 @@ int ff_raw_write_packet(AVFormatContext *s, AVPacket *pkt);
 
 int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt);
 
+int ff_raw_audio_read_header(AVFormatContext *s, AVFormatParameters *ap);
+
 #endif /* AVFORMAT_RAW_H */