voc: Split ff_voc_get_packet into a separate file

3 files changed, 122 insertions, 103 deletions

diff --git a/libavformat/Makefile b/libavformat/Makefile
index 27053f2814..b497b9398e 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -84,12 +84,12 @@ OBJS-$(CONFIG_AVI_DEMUXER)               += avidec.o
 OBJS-$(CONFIG_AVI_MUXER)                 += avienc.o
 OBJS-$(CONFIG_AVISYNTH)                  += avisynth.o
 OBJS-$(CONFIG_AVM2_MUXER)                += swfenc.o swf.o
-OBJS-$(CONFIG_AVS_DEMUXER)               += avs.o vocdec.o voc.o
+OBJS-$(CONFIG_AVS_DEMUXER)               += avs.o voc_packet.o voc.o
 OBJS-$(CONFIG_BETHSOFTVID_DEMUXER)       += bethsoftvid.o
 OBJS-$(CONFIG_BFI_DEMUXER)               += bfi.o
 OBJS-$(CONFIG_BINK_DEMUXER)              += bink.o
 OBJS-$(CONFIG_BMV_DEMUXER)               += bmv.o
-OBJS-$(CONFIG_C93_DEMUXER)               += c93.o vocdec.o voc.o
+OBJS-$(CONFIG_C93_DEMUXER)               += c93.o voc_packet.o voc.o
 OBJS-$(CONFIG_CAF_DEMUXER)               += cafdec.o caf.o mov.o mov_chan.o \
                                             replaygain.o
 OBJS-$(CONFIG_CAVSVIDEO_DEMUXER)         += cavsvideodec.o rawdec.o
@@ -350,7 +350,7 @@ OBJS-$(CONFIG_VC1_DEMUXER)               += rawdec.o
 OBJS-$(CONFIG_VC1T_DEMUXER)              += vc1test.o
 OBJS-$(CONFIG_VC1T_MUXER)                += vc1testenc.o
 OBJS-$(CONFIG_VMD_DEMUXER)               += sierravmd.o
-OBJS-$(CONFIG_VOC_DEMUXER)               += vocdec.o voc.o
+OBJS-$(CONFIG_VOC_DEMUXER)               += vocdec.o voc_packet.o voc.o
 OBJS-$(CONFIG_VOC_MUXER)                 += vocenc.o voc.o
 OBJS-$(CONFIG_VQF_DEMUXER)               += vqf.o
 OBJS-$(CONFIG_W64_DEMUXER)               += wavdec.o pcm.o
diff --git a/libavformat/voc_packet.c b/libavformat/voc_packet.c
new file mode 100644
index 0000000000..9e1c7469da
--- /dev/null
+++ b/libavformat/voc_packet.c
@@ -0,0 +1,119 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avformat.h"
+#include "internal.h"
+#include "voc.h"
+
+int
+ff_voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
+{
+    VocDecContext *voc = s->priv_data;
+    AVCodecContext *dec = st->codec;
+    AVIOContext *pb = s->pb;
+    VocType type;
+    int size, tmp_codec=-1;
+    int sample_rate = 0;
+    int channels = 1;
+
+    while (!voc->remaining_size) {
+        type = avio_r8(pb);
+        if (type == VOC_TYPE_EOF)
+            return AVERROR(EIO);
+        voc->remaining_size = avio_rl24(pb);
+        if (!voc->remaining_size) {
+            if (!s->pb->seekable)
+                return AVERROR(EIO);
+            voc->remaining_size = avio_size(pb) - avio_tell(pb);
+        }
+        max_size -= 4;
+
+        switch (type) {
+        case VOC_TYPE_VOICE_DATA:
+            if (!dec->sample_rate) {
+                dec->sample_rate = 1000000 / (256 - avio_r8(pb));
+                if (sample_rate)
+                    dec->sample_rate = sample_rate;
+                avpriv_set_pts_info(st, 64, 1, dec->sample_rate);
+                dec->channels = channels;
+                dec->bits_per_coded_sample = av_get_bits_per_sample(dec->codec_id);
+            } else
+                avio_skip(pb, 1);
+            tmp_codec = avio_r8(pb);
+            voc->remaining_size -= 2;
+            max_size -= 2;
+            channels = 1;
+            break;
+
+        case VOC_TYPE_VOICE_DATA_CONT:
+            break;
+
+        case VOC_TYPE_EXTENDED:
+            sample_rate = avio_rl16(pb);
+            avio_r8(pb);
+            channels = avio_r8(pb) + 1;
+            sample_rate = 256000000 / (channels * (65536 - sample_rate));
+            voc->remaining_size = 0;
+            max_size -= 4;
+            break;
+
+        case VOC_TYPE_NEW_VOICE_DATA:
+            if (!dec->sample_rate) {
+                dec->sample_rate = avio_rl32(pb);
+                avpriv_set_pts_info(st, 64, 1, dec->sample_rate);
+                dec->bits_per_coded_sample = avio_r8(pb);
+                dec->channels = avio_r8(pb);
+            } else
+                avio_skip(pb, 6);
+            tmp_codec = avio_rl16(pb);
+            avio_skip(pb, 4);
+            voc->remaining_size -= 12;
+            max_size -= 12;
+            break;
+
+        default:
+            avio_skip(pb, voc->remaining_size);
+            max_size -= voc->remaining_size;
+            voc->remaining_size = 0;
+            break;
+        }
+    }
+
+    if (tmp_codec >= 0) {
+        tmp_codec = ff_codec_get_id(ff_voc_codec_tags, tmp_codec);
+        if (dec->codec_id == AV_CODEC_ID_NONE)
+            dec->codec_id = tmp_codec;
+        else if (dec->codec_id != tmp_codec)
+            av_log(s, AV_LOG_WARNING, "Ignoring mid-stream change in audio codec\n");
+        if (dec->codec_id == AV_CODEC_ID_NONE) {
+            if (s->audio_codec_id == AV_CODEC_ID_NONE) {
+                av_log(s, AV_LOG_ERROR, "unknown codec tag\n");
+                return AVERROR(EINVAL);
+            }
+            av_log(s, AV_LOG_WARNING, "unknown codec tag\n");
+        }
+    }
+
+    dec->bit_rate = dec->sample_rate * dec->bits_per_coded_sample;
+
+    if (max_size <= 0)
+        max_size = 2048;
+    size = FFMIN(voc->remaining_size, max_size);
+    voc->remaining_size -= size;
+    return av_get_packet(pb, pkt, size);
+}
diff --git a/libavformat/vocdec.c b/libavformat/vocdec.c
index 459952203e..aca77ced63 100644
--- a/libavformat/vocdec.c
+++ b/libavformat/vocdec.c
@@ -23,105 +23,6 @@
 #include "voc.h"
 #include "internal.h"
 
-int
-ff_voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
-{
-    VocDecContext *voc = s->priv_data;
-    AVCodecContext *dec = st->codec;
-    AVIOContext *pb = s->pb;
-    VocType type;
-    int size, tmp_codec=-1;
-    int sample_rate = 0;
-    int channels = 1;
-
-    while (!voc->remaining_size) {
-        type = avio_r8(pb);
-        if (type == VOC_TYPE_EOF)
-            return AVERROR(EIO);
-        voc->remaining_size = avio_rl24(pb);
-        if (!voc->remaining_size) {
-            if (!s->pb->seekable)
-                return AVERROR(EIO);
-            voc->remaining_size = avio_size(pb) - avio_tell(pb);
-        }
-        max_size -= 4;
-
-        switch (type) {
-        case VOC_TYPE_VOICE_DATA:
-            if (!dec->sample_rate) {
-                dec->sample_rate = 1000000 / (256 - avio_r8(pb));
-                if (sample_rate)
-                    dec->sample_rate = sample_rate;
-                avpriv_set_pts_info(st, 64, 1, dec->sample_rate);
-                dec->channels = channels;
-                dec->bits_per_coded_sample = av_get_bits_per_sample(dec->codec_id);
-            } else
-                avio_skip(pb, 1);
-            tmp_codec = avio_r8(pb);
-            voc->remaining_size -= 2;
-            max_size -= 2;
-            channels = 1;
-            break;
-
-        case VOC_TYPE_VOICE_DATA_CONT:
-            break;
-
-        case VOC_TYPE_EXTENDED:
-            sample_rate = avio_rl16(pb);
-            avio_r8(pb);
-            channels = avio_r8(pb) + 1;
-            sample_rate = 256000000 / (channels * (65536 - sample_rate));
-            voc->remaining_size = 0;
-            max_size -= 4;
-            break;
-
-        case VOC_TYPE_NEW_VOICE_DATA:
-            if (!dec->sample_rate) {
-                dec->sample_rate = avio_rl32(pb);
-                avpriv_set_pts_info(st, 64, 1, dec->sample_rate);
-                dec->bits_per_coded_sample = avio_r8(pb);
-                dec->channels = avio_r8(pb);
-            } else
-                avio_skip(pb, 6);
-            tmp_codec = avio_rl16(pb);
-            avio_skip(pb, 4);
-            voc->remaining_size -= 12;
-            max_size -= 12;
-            break;
-
-        default:
-            avio_skip(pb, voc->remaining_size);
-            max_size -= voc->remaining_size;
-            voc->remaining_size = 0;
-            break;
-        }
-    }
-
-    if (tmp_codec >= 0) {
-        tmp_codec = ff_codec_get_id(ff_voc_codec_tags, tmp_codec);
-        if (dec->codec_id == AV_CODEC_ID_NONE)
-            dec->codec_id = tmp_codec;
-        else if (dec->codec_id != tmp_codec)
-            av_log(s, AV_LOG_WARNING, "Ignoring mid-stream change in audio codec\n");
-        if (dec->codec_id == AV_CODEC_ID_NONE) {
-            if (s->audio_codec_id == AV_CODEC_ID_NONE) {
-                av_log(s, AV_LOG_ERROR, "unknown codec tag\n");
-                return AVERROR(EINVAL);
-            }
-            av_log(s, AV_LOG_WARNING, "unknown codec tag\n");
-        }
-    }
-
-    dec->bit_rate = dec->sample_rate * dec->bits_per_coded_sample;
-
-    if (max_size <= 0)
-        max_size = 2048;
-    size = FFMIN(voc->remaining_size, max_size);
-    voc->remaining_size -= size;
-    return av_get_packet(pb, pkt, size);
-}
-
-#if CONFIG_VOC_DEMUXER
 static int voc_probe(AVProbeData *p)
 {
     int version, check;
@@ -176,4 +77,3 @@ AVInputFormat ff_voc_demuxer = {
     .read_packet    = voc_read_packet,
     .codec_tag      = (const AVCodecTag* const []){ ff_voc_codec_tags, 0 },
 };
-#endif /* CONFIG_VOC_DEMUXER */