aboutsummaryrefslogtreecommitdiffstats
path: root/libavformat
diff options
context:
space:
mode:
authorMichael Niedermayer <michaelni@gmx.at>2003-09-28 20:34:11 +0000
committerMichael Niedermayer <michaelni@gmx.at>2003-09-28 20:34:11 +0000
commitd663a1fdc0fd405aafabc9bca6d19d02ca640df9 (patch)
tree7b8bbe5e7c61c935111aa68aec37fdd441e1327c /libavformat
parentcd1f22f97e9cec9a64c41f33dfd9658c73461270 (diff)
downloadffmpeg-d663a1fdc0fd405aafabc9bca6d19d02ca640df9.tar.gz
AMR-WB support by (Johannes Carlsson <joca at rixmail dot se>)
Originally committed as revision 2311 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat')
-rw-r--r--libavformat/Makefile2
-rw-r--r--libavformat/allformats.c2
-rw-r--r--libavformat/amr.c180
-rw-r--r--libavformat/mov.c42
4 files changed, 139 insertions, 87 deletions
diff --git a/libavformat/Makefile b/libavformat/Makefile
index e653e3e344..b0977e8398 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -21,7 +21,7 @@ ifeq ($(CONFIG_RISKY),yes)
OBJS+= asf.o
endif
-ifeq ($(AMR_NB),yes)
+ifeq ($(AMR_NB),yes) | ifeq ($(AMR_NB_FIXED),yes) | ifeq ($(AMR_WB),yes)
OBJS+= amr.o
endif
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 8c238f222b..828487868c 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -57,7 +57,7 @@ void av_register_all(void)
ipmovie_init();
wc3_init();
-#ifdef AMR_NB
+#if defined(AMR_NB) || defined(AMR_NB_FIXED) || defined(AMR_WB)
amr_init();
#endif
yuv4mpeg_init();
diff --git a/libavformat/amr.c b/libavformat/amr.c
index 4baa427ea3..67a7748bda 100644
--- a/libavformat/amr.c
+++ b/libavformat/amr.c
@@ -20,34 +20,34 @@
/*
Write and read amr data according to RFC3267, http://www.ietf.org/rfc/rfc3267.txt?number=3267
-Only amr narrowband (not amr-wb) is supported for now.
+Only mono files are supported.
*/
#include "avformat.h"
-#include "avi.h"
static const unsigned char AMR_header [] = "#!AMR\n";
-
-/* AMR_FILE header */
-static int put_amr_header(ByteIOContext *pb, AVCodecContext *enc)
-{
- put_tag(pb, AMR_header); /* magic number */
- return 0;
-}
+static const unsigned char AMRWB_header [] = "#!AMR-WB\n";
static int amr_write_header(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
+ AVCodecContext *enc = &s->streams[0]->codec;
s->priv_data = NULL;
- /* format header */
- if (put_amr_header(pb, &s->streams[0]->codec) < 0) {
- return -1;
+ if (enc->codec_id == CODEC_ID_AMR_NB)
+ {
+ put_tag(pb, AMR_header); /* magic number */
+ }
+ else if(enc->codec_id == CODEC_ID_AMR_WB)
+ {
+ put_tag(pb, AMRWB_header); /* magic number */
+ }
+ else
+ {
+ //This is an error!
}
-
put_flush_packet(pb);
-
return 0;
}
@@ -66,10 +66,13 @@ static int amr_write_trailer(AVFormatContext *s)
static int amr_probe(AVProbeData *p)
{
- /* check file header */
- if (p->buf_size < 6)
+ //Only check for "#!AMR" which could be amr-wb, amr-nb.
+ //This will also trigger multichannel files: "#!AMR_MC1.0\n" and
+ //"#!AMR-WB_MC1.0\n" (not supported)
+
+ if (p->buf_size < 5)
return 0;
- if(memcmp(p->buf,AMR_header,6)==0)
+ if(memcmp(p->buf,AMR_header,5)==0)
return AVPROBE_SCORE_MAX;
else
return 0;
@@ -81,24 +84,44 @@ static int amr_read_header(AVFormatContext *s,
{
ByteIOContext *pb = &s->pb;
AVStream *st;
- uint8_t header[6];
+ uint8_t header[9];
get_buffer(pb, header, 6);
if(memcmp(header,AMR_header,6)!=0)
{
- return -1;
+ get_buffer(pb, header+6, 3);
+ if(memcmp(header,AMRWB_header,9)!=0)
+ {
+ return -1;
+ }
+ st = av_new_stream(s, 0);
+ if (!st)
+ {
+ return AVERROR_NOMEM;
+ }
+
+ st->codec.codec_type = CODEC_TYPE_AUDIO;
+ st->codec.codec_tag = CODEC_ID_AMR_WB;
+ st->codec.codec_id = CODEC_ID_AMR_WB;
+ st->codec.channels = 1;
+ st->codec.sample_rate = 16000;
+ }
+ else
+ {
+ st = av_new_stream(s, 0);
+ if (!st)
+ {
+ return AVERROR_NOMEM;
+ }
+
+ st->codec.codec_type = CODEC_TYPE_AUDIO;
+ st->codec.codec_tag = CODEC_ID_AMR_NB;
+ st->codec.codec_id = CODEC_ID_AMR_NB;
+ st->codec.channels = 1;
+ st->codec.sample_rate = 8000;
}
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
-
- st->codec.codec_type = CODEC_TYPE_AUDIO;
- st->codec.codec_tag = CODEC_ID_AMR_NB;
- st->codec.codec_id = CODEC_ID_AMR_NB;
- st->codec.channels = 1;
- st->codec.sample_rate = 8000;
return 0;
}
@@ -107,39 +130,82 @@ static int amr_read_header(AVFormatContext *s,
static int amr_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
- static uint16_t packed_size[16] = {12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0};
- uint8_t toc, q, ft;
- int read;
- int size;
+ AVCodecContext *enc = &s->streams[0]->codec;
- if (url_feof(&s->pb))
- return -EIO;
-
- toc=0;
-
- toc=get_byte(&s->pb);
-
- q = (toc >> 2) & 0x01;
- ft = (toc >> 3) & 0x0F;
-
- size=packed_size[ft];
- //printf("amr_read_packet size=%d\n",size);
-
- if (av_new_packet(pkt, size+1))
- return -EIO;
- pkt->stream_index = 0;
+ if (enc->codec_id == CODEC_ID_AMR_NB)
+ {
+ const static uint8_t packed_size[16] = {12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0};
+ uint8_t toc, q, ft;
+ int read;
+ int size;
- pkt->data[0]=toc;
-
- read = get_buffer(&s->pb, pkt->data+1, size);
-
- if (read != size)
+ if (url_feof(&s->pb))
+ {
+ return -EIO;
+ }
+
+ toc=get_byte(&s->pb);
+ q = (toc >> 2) & 0x01;
+ ft = (toc >> 3) & 0x0F;
+
+ size=packed_size[ft];
+
+ if (av_new_packet(pkt, size+1))
+ {
+ return -EIO;
+ }
+ pkt->stream_index = 0;
+
+ pkt->data[0]=toc;
+
+ read = get_buffer(&s->pb, pkt->data+1, size);
+
+ if (read != size)
+ {
+ av_free_packet(pkt);
+ return -EIO;
+ }
+
+ return 0;
+ }
+ else if(enc->codec_id == CODEC_ID_AMR_WB)
+ {
+ static uint8_t packed_size[16] = {18, 24, 33, 37, 41, 47, 51, 59, 61, 6, 6, 0, 0, 0, 1, 1};
+ uint8_t toc, mode;
+ int read;
+ int size;
+
+ if (url_feof(&s->pb))
+ {
+ return -EIO;
+ }
+
+ toc=get_byte(&s->pb);
+ mode = (uint8_t)((toc >> 3) & 0x0F);
+ size = packed_size[mode];
+
+ if ( (size==0) || av_new_packet(pkt, size))
+ {
+ return -EIO;
+ }
+
+ pkt->stream_index = 0;
+ pkt->data[0]=toc;
+
+ read = get_buffer(&s->pb, pkt->data+1, size-1);
+
+ if (read != (size-1))
+ {
+ av_free_packet(pkt);
+ return -EIO;
+ }
+
+ return 0;
+ }
+ else
{
- av_free_packet(pkt);
return -EIO;
}
-
- return 0;
}
static int amr_read_close(AVFormatContext *s)
@@ -150,7 +216,7 @@ static int amr_read_close(AVFormatContext *s)
static AVInputFormat amr_iformat = {
"amr",
"3gpp amr file format",
- 0,
+ 0, /*priv_data_size*/
amr_probe,
amr_read_header,
amr_read_packet,
diff --git a/libavformat/mov.c b/libavformat/mov.c
index fb7019c2c1..970d101427 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -121,6 +121,7 @@ static const CodecTag mov_audio_tags[] = {
{ CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG 4 AAC or audio ? */
/* The standard for mpeg4 audio is still not normalised AFAIK anyway */
{ CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
+ { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
{ CODEC_ID_NONE, 0 },
};
@@ -850,10 +851,10 @@ static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
#endif
} else {
st->codec.codec_id = codec_get_id(mov_audio_tags, format);
- if(st->codec.codec_id==CODEC_ID_AMR_NB) //from TS26.244
+ if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
{
#ifdef DEBUG
- printf("AMR-NB audio identified!!\n");
+ printf("AMR-NB or AMR-WB audio identified!!\n");
#endif
get_be32(pb);get_be32(pb); //Reserved_8
get_be16(pb);//Reserved_2
@@ -863,41 +864,26 @@ static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
get_be16(pb);//Reserved_2
//AMRSpecificBox.(10 bytes)
-
-#ifdef DEBUG
- int damr_size=
-#endif
+
get_be32(pb); //size
-#ifdef DEBUG
- int damr_type=
-#endif
get_be32(pb); //type=='damr'
-#ifdef DEBUG
- int damr_vendor=
-#endif
get_be32(pb); //vendor
get_byte(pb); //decoder version
get_be16(pb); //mode_set
get_byte(pb); //mode_change_period
get_byte(pb); //frames_per_sample
-#ifdef DEBUG
- printf("Audio: damr_type=%c%c%c%c damr_size=%d damr_vendor=%c%c%c%c\n",
- (damr_type >> 24) & 0xff,
- (damr_type >> 16) & 0xff,
- (damr_type >> 8) & 0xff,
- (damr_type >> 0) & 0xff,
- damr_size,
- (damr_vendor >> 24) & 0xff,
- (damr_vendor >> 16) & 0xff,
- (damr_vendor >> 8) & 0xff,
- (damr_vendor >> 0) & 0xff
- );
-#endif
-
st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
- st->codec.sample_rate=8000;
- st->codec.channels=1;
+ if(st->codec.codec_id==CODEC_ID_AMR_NB)
+ {
+ st->codec.sample_rate=8000;
+ st->codec.channels=1;
+ }
+ else //AMR-WB
+ {
+ st->codec.sample_rate=16000;
+ st->codec.channels=1;
+ }
st->codec.bits_per_sample=16;
st->codec.bit_rate=0; /*It is not possible to tell this before we have
an audio frame and even then every frame can be different*/