[FFmpeg-cvslog] omadec: split data that will be used in the muxer to a separate file.
Anton Khirnov
git at videolan.org
Mon Dec 19 03:18:28 CET 2011
ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Sat Dec 17 15:23:13 2011 +0100| [ee20b332c872b48cbcf914a2b4adc52aa3e94175] | committer: Anton Khirnov
omadec: split data that will be used in the muxer to a separate file.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ee20b332c872b48cbcf914a2b4adc52aa3e94175
---
libavformat/Makefile | 2 +-
libavformat/oma.c | 33 +++++++++++++++++++++++++++++++++
libavformat/oma.h | 39 +++++++++++++++++++++++++++++++++++++++
libavformat/omadec.c | 28 +++++-----------------------
4 files changed, 78 insertions(+), 24 deletions(-)
diff --git a/libavformat/Makefile b/libavformat/Makefile
index fe59723..aa15b7e 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -178,7 +178,7 @@ OBJS-$(CONFIG_OGG_DEMUXER) += oggdec.o \
vorbiscomment.o
OBJS-$(CONFIG_OGG_MUXER) += oggenc.o \
vorbiscomment.o
-OBJS-$(CONFIG_OMA_DEMUXER) += omadec.o pcm.o
+OBJS-$(CONFIG_OMA_DEMUXER) += omadec.o pcm.o oma.o
OBJS-$(CONFIG_PCM_ALAW_DEMUXER) += pcmdec.o pcm.o rawdec.o
OBJS-$(CONFIG_PCM_ALAW_MUXER) += pcmenc.o rawenc.o
OBJS-$(CONFIG_PCM_F32BE_DEMUXER) += pcmdec.o pcm.o rawdec.o
diff --git a/libavformat/oma.c b/libavformat/oma.c
new file mode 100644
index 0000000..930991c
--- /dev/null
+++ b/libavformat/oma.c
@@ -0,0 +1,33 @@
+/*
+ * Sony OpenMG (OMA) common data
+ *
+ * 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 "internal.h"
+#include "oma.h"
+#include "libavcodec/avcodec.h"
+
+const uint16_t ff_oma_srate_tab[6] = { 320, 441, 480, 882, 960, 0 };
+
+const AVCodecTag ff_oma_codec_tags[] = {
+ { CODEC_ID_ATRAC3, OMA_CODECID_ATRAC3 },
+ { CODEC_ID_ATRAC3P, OMA_CODECID_ATRAC3P },
+ { CODEC_ID_MP3, OMA_CODECID_MP3 },
+ { CODEC_ID_PCM_S16BE, OMA_CODECID_LPCM },
+ { 0 },
+};
diff --git a/libavformat/oma.h b/libavformat/oma.h
new file mode 100644
index 0000000..2830b34
--- /dev/null
+++ b/libavformat/oma.h
@@ -0,0 +1,39 @@
+/*
+ * Sony OpenMG (OMA) common data
+ *
+ * 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
+ */
+
+#ifndef AVFORMAT_OMA_H
+#define AVFORMAT_OMA_H
+
+#define EA3_HEADER_SIZE 96
+#define ID3v2_EA3_MAGIC "ea3"
+#define OMA_ENC_HEADER_SIZE 16
+
+enum {
+ OMA_CODECID_ATRAC3 = 0,
+ OMA_CODECID_ATRAC3P = 1,
+ OMA_CODECID_MP3 = 3,
+ OMA_CODECID_LPCM = 4,
+ OMA_CODECID_WMA = 5,
+};
+
+extern const uint16_t ff_oma_srate_tab[6];
+
+extern const AVCodecTag ff_oma_codec_tags[];
+#endif
diff --git a/libavformat/omadec.c b/libavformat/omadec.c
index 1aa9a25..0beed71 100644
--- a/libavformat/omadec.c
+++ b/libavformat/omadec.c
@@ -44,28 +44,11 @@
#include "internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/des.h"
+#include "oma.h"
#include "pcm.h"
#include "riff.h"
#include "id3v2.h"
-#define EA3_HEADER_SIZE 96
-#define ID3v2_EA3_MAGIC "ea3"
-#define OMA_ENC_HEADER_SIZE 16
-
-enum {
- OMA_CODECID_ATRAC3 = 0,
- OMA_CODECID_ATRAC3P = 1,
- OMA_CODECID_MP3 = 3,
- OMA_CODECID_LPCM = 4,
- OMA_CODECID_WMA = 5,
-};
-
-static const AVCodecTag codec_oma_tags[] = {
- { CODEC_ID_ATRAC3, OMA_CODECID_ATRAC3 },
- { CODEC_ID_ATRAC3P, OMA_CODECID_ATRAC3P },
- { CODEC_ID_MP3, OMA_CODECID_MP3 },
- { CODEC_ID_PCM_S16BE, OMA_CODECID_LPCM },
-};
static const uint64_t leaf_table[] = {
0xd79e8283acea4620, 0x7a9762f445afd0d8,
@@ -276,7 +259,6 @@ static int decrypt_init(AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header)
static int oma_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
- static const uint16_t srate_tab[6] = {320,441,480,882,960,0};
int ret, framesize, jsflag, samplerate;
uint32_t codec_params;
int16_t eid;
@@ -316,11 +298,11 @@ static int oma_read_header(AVFormatContext *s,
st->start_time = 0;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = buf[32];
- st->codec->codec_id = ff_codec_get_id(codec_oma_tags, st->codec->codec_tag);
+ st->codec->codec_id = ff_codec_get_id(ff_oma_codec_tags, st->codec->codec_tag);
switch (buf[32]) {
case OMA_CODECID_ATRAC3:
- samplerate = srate_tab[(codec_params >> 13) & 7]*100;
+ samplerate = ff_oma_srate_tab[(codec_params >> 13) & 7]*100;
if (samplerate != 44100)
av_log_ask_for_sample(s, "Unsupported sample rate: %d\n",
samplerate);
@@ -350,7 +332,7 @@ static int oma_read_header(AVFormatContext *s,
case OMA_CODECID_ATRAC3P:
st->codec->channels = (codec_params >> 10) & 7;
framesize = ((codec_params & 0x3FF) * 8) + 8;
- st->codec->sample_rate = srate_tab[(codec_params >> 13) & 7]*100;
+ st->codec->sample_rate = ff_oma_srate_tab[(codec_params >> 13) & 7]*100;
st->codec->bit_rate = st->codec->sample_rate * framesize * 8 / 1024;
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
av_log(s, AV_LOG_ERROR, "Unsupported codec ATRAC3+!\n");
@@ -459,6 +441,6 @@ AVInputFormat ff_oma_demuxer = {
.read_seek = oma_read_seek,
.flags = AVFMT_GENERIC_INDEX,
.extensions = "oma,omg,aa3",
- .codec_tag = (const AVCodecTag* const []){codec_oma_tags, 0},
+ .codec_tag = (const AVCodecTag* const []){ff_oma_codec_tags, 0},
};
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