/*
* Sony OpenMG (OMA) demuxer
*
- * Copyright (c) 2008 Maxim Poliakovski
+ * Copyright (c) 2008, 2013 Maxim Poliakovski
* 2008 Benjamin Larsson
* 2011 David Goldwich
*
* - Sound data organized in packets follow the EA3 header
* (can be encrypted using the Sony DRM!).
*
- * CODEC SUPPORT: Only ATRAC3 codec is currently supported!
+ * Supported decoders: ATRAC3, ATRAC3+, MP3, LPCM
*/
+#include <inttypes.h>
+
#include "libavutil/channel_layout.h"
#include "avformat.h"
#include "internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/des.h"
+#include "libavutil/mathematics.h"
#include "oma.h"
#include "pcm.h"
#include "id3v2.h"
uint8_t sm_val[8];
uint8_t e_val[8];
uint8_t iv[8];
- struct AVDES av_des;
+ struct AVDES *av_des;
} OMAContext;
-static void hex_log(AVFormatContext *s, int level, const char *name, const uint8_t *value, int len)
+static void hex_log(AVFormatContext *s, int level,
+ const char *name, const uint8_t *value, int len)
{
char buf[33];
len = FFMIN(len, 16);
if (av_log_get_level() < level)
return;
ff_data_to_hex(buf, value, len, 1);
- buf[len<<1] = '\0';
+ buf[len << 1] = '\0';
av_log(s, level, "%s: %s\n", name, buf);
}
-static int kset(AVFormatContext *s, const uint8_t *r_val, const uint8_t *n_val, int len)
+static int kset(AVFormatContext *s, const uint8_t *r_val, const uint8_t *n_val,
+ int len)
{
OMAContext *oc = s->priv_data;
return 0;
}
-static int rprobe(AVFormatContext *s, uint8_t *enc_header, const uint8_t *r_val)
+#define OMA_RPROBE_M_VAL 48 + 1
+
+static int rprobe(AVFormatContext *s, uint8_t *enc_header, unsigned size,
+ const uint8_t *r_val)
{
OMAContext *oc = s->priv_data;
unsigned int pos;
- struct AVDES av_des;
+ struct AVDES *av_des;
- if (!enc_header || !r_val)
+ if (!enc_header || !r_val ||
+ size < OMA_ENC_HEADER_SIZE + oc->k_size + oc->e_size + oc->i_size ||
+ size < OMA_RPROBE_M_VAL)
return -1;
+ av_des = av_des_alloc();
+ if (!av_des)
+ return AVERROR(ENOMEM);
+
/* m_val */
- av_des_init(&av_des, r_val, 192, 1);
- av_des_crypt(&av_des, oc->m_val, &enc_header[48], 1, NULL, 1);
+ av_des_init(av_des, r_val, 192, 1);
+ av_des_crypt(av_des, oc->m_val, &enc_header[48], 1, NULL, 1);
/* s_val */
- av_des_init(&av_des, oc->m_val, 64, 0);
- av_des_crypt(&av_des, oc->s_val, NULL, 1, NULL, 0);
+ av_des_init(av_des, oc->m_val, 64, 0);
+ av_des_crypt(av_des, oc->s_val, NULL, 1, NULL, 0);
/* sm_val */
pos = OMA_ENC_HEADER_SIZE + oc->k_size + oc->e_size;
- av_des_init(&av_des, oc->s_val, 64, 0);
- av_des_mac(&av_des, oc->sm_val, &enc_header[pos], (oc->i_size >> 3));
+ av_des_init(av_des, oc->s_val, 64, 0);
+ av_des_mac(av_des, oc->sm_val, &enc_header[pos], (oc->i_size >> 3));
pos += oc->i_size;
+ av_free(av_des);
+
return memcmp(&enc_header[pos], oc->sm_val, 8) ? -1 : 0;
}
-static int nprobe(AVFormatContext *s, uint8_t *enc_header, int size, const uint8_t *n_val)
+static int nprobe(AVFormatContext *s, uint8_t *enc_header, unsigned size,
+ const uint8_t *n_val)
{
OMAContext *oc = s->priv_data;
- uint32_t pos, taglen, datalen;
- struct AVDES av_des;
+ uint64_t pos;
+ uint32_t taglen, datalen;
+ struct AVDES *av_des;
- if (!enc_header || !n_val)
+ if (!enc_header || !n_val ||
+ size < OMA_ENC_HEADER_SIZE + oc->k_size + 4)
return -1;
pos = OMA_ENC_HEADER_SIZE + oc->k_size;
if (!memcmp(&enc_header[pos], "EKB ", 4))
pos += 32;
+ if (size < pos + 44)
+ return -1;
+
if (AV_RB32(&enc_header[pos]) != oc->rid)
av_log(s, AV_LOG_DEBUG, "Mismatching RID\n");
- taglen = AV_RB32(&enc_header[pos+32]);
- datalen = AV_RB32(&enc_header[pos+36]) >> 4;
+ taglen = AV_RB32(&enc_header[pos + 32]);
+ datalen = AV_RB32(&enc_header[pos + 36]) >> 4;
- if(taglen + (((uint64_t)datalen)<<4) + 44 > size)
+ pos += 44;
+ if (size - pos < taglen)
return -1;
- pos += 44 + taglen;
+ pos += taglen;
+
+ if (datalen << 4 > size - pos)
+ return -1;
+
+ av_des = av_des_alloc();
+ if (!av_des)
+ return AVERROR(ENOMEM);
- av_des_init(&av_des, n_val, 192, 1);
+ av_des_init(av_des, n_val, 192, 1);
while (datalen-- > 0) {
- av_des_crypt(&av_des, oc->r_val, &enc_header[pos], 2, NULL, 1);
+ av_des_crypt(av_des, oc->r_val, &enc_header[pos], 2, NULL, 1);
kset(s, oc->r_val, NULL, 16);
- if (!rprobe(s, enc_header, oc->r_val))
+ if (!rprobe(s, enc_header, size, oc->r_val)) {
+ av_free(av_des);
return 0;
+ }
pos += 16;
}
+ av_free(av_des);
return -1;
}
}
if (!em) {
av_log(s, AV_LOG_ERROR, "No encryption header found\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
if (geob->datasize < 64) {
- av_log(s, AV_LOG_ERROR, "Invalid GEOB data size: %u\n", geob->datasize);
- return -1;
+ av_log(s, AV_LOG_ERROR,
+ "Invalid GEOB data size: %"PRIu32"\n", geob->datasize);
+ return AVERROR_INVALIDDATA;
}
gdata = geob->data;
if (memcmp(&gdata[OMA_ENC_HEADER_SIZE], "KEYRING ", 12)) {
av_log(s, AV_LOG_ERROR, "Invalid encryption header\n");
- return -1;
+ return AVERROR_INVALIDDATA;
+ }
+ if (OMA_ENC_HEADER_SIZE + oc->k_size + oc->e_size + oc->i_size + 8 > geob->datasize ||
+ OMA_ENC_HEADER_SIZE + 48 > geob->datasize) {
+ av_log(s, AV_LOG_ERROR, "Too little GEOB data\n");
+ return AVERROR_INVALIDDATA;
}
oc->rid = AV_RB32(&gdata[OMA_ENC_HEADER_SIZE + 28]);
- av_log(s, AV_LOG_DEBUG, "RID: %.8x\n", oc->rid);
+ av_log(s, AV_LOG_DEBUG, "RID: %.8"PRIx32"\n", oc->rid);
memcpy(oc->iv, &header[0x58], 8);
hex_log(s, AV_LOG_DEBUG, "IV", oc->iv, 8);
- hex_log(s, AV_LOG_DEBUG, "CBC-MAC", &gdata[OMA_ENC_HEADER_SIZE+oc->k_size+oc->e_size+oc->i_size], 8);
+ hex_log(s, AV_LOG_DEBUG, "CBC-MAC",
+ &gdata[OMA_ENC_HEADER_SIZE + oc->k_size + oc->e_size + oc->i_size],
+ 8);
if (s->keylen > 0) {
kset(s, s->key, s->key, s->keylen);
}
if (!memcmp(oc->r_val, (const uint8_t[8]){0}, 8) ||
- rprobe(s, gdata, oc->r_val) < 0 &&
+ rprobe(s, gdata, geob->datasize, oc->r_val) < 0 &&
nprobe(s, gdata, geob->datasize, oc->n_val) < 0) {
int i;
for (i = 0; i < FF_ARRAY_ELEMS(leaf_table); i += 2) {
uint8_t buf[16];
- AV_WL64(buf, leaf_table[i]);
- AV_WL64(&buf[8], leaf_table[i+1]);
+ AV_WL64(buf, leaf_table[i]);
+ AV_WL64(&buf[8], leaf_table[i + 1]);
kset(s, buf, buf, 16);
- if (!rprobe(s, gdata, oc->r_val) || !nprobe(s, gdata, geob->datasize, oc->n_val))
+ if (!rprobe(s, gdata, geob->datasize, oc->r_val) ||
+ !nprobe(s, gdata, geob->datasize, oc->n_val))
break;
}
- if (i >= sizeof(leaf_table)) {
+ if (i >= FF_ARRAY_ELEMS(leaf_table)) {
av_log(s, AV_LOG_ERROR, "Invalid key\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
}
+ oc->av_des = av_des_alloc();
+ if (!oc->av_des)
+ return AVERROR(ENOMEM);
+
/* e_val */
- av_des_init(&oc->av_des, oc->m_val, 64, 0);
- av_des_crypt(&oc->av_des, oc->e_val, &gdata[OMA_ENC_HEADER_SIZE + 40], 1, NULL, 0);
+ av_des_init(oc->av_des, oc->m_val, 64, 0);
+ av_des_crypt(oc->av_des, oc->e_val,
+ &gdata[OMA_ENC_HEADER_SIZE + 40], 1, NULL, 0);
hex_log(s, AV_LOG_DEBUG, "EK", oc->e_val, 8);
/* init e_val */
- av_des_init(&oc->av_des, oc->e_val, 64, 1);
+ av_des_init(oc->av_des, oc->e_val, 64, 1);
return 0;
}
static int oma_read_header(AVFormatContext *s)
{
int ret, framesize, jsflag, samplerate;
- uint32_t codec_params;
+ uint32_t codec_params, channel_id;
int16_t eid;
uint8_t buf[EA3_HEADER_SIZE];
uint8_t *edata;
if (ret < EA3_HEADER_SIZE)
return -1;
- if (memcmp(buf, ((const uint8_t[]){'E', 'A', '3'}),3) || buf[4] != 0 || buf[5] != EA3_HEADER_SIZE) {
+ if (memcmp(buf, ((const uint8_t[]){'E', 'A', '3'}), 3) ||
+ buf[4] != 0 || buf[5] != EA3_HEADER_SIZE) {
av_log(s, AV_LOG_ERROR, "Couldn't find the EA3 header !\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
oc->content_start = avio_tell(s->pb);
return AVERROR(ENOMEM);
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(ff_oma_codec_tags, st->codec->codec_tag);
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_tag = buf[32];
+ st->codecpar->codec_id = ff_codec_get_id(ff_oma_codec_tags,
+ st->codecpar->codec_tag);
switch (buf[32]) {
- case OMA_CODECID_ATRAC3:
- samplerate = ff_oma_srate_tab[(codec_params >> 13) & 7]*100;
- if (samplerate != 44100)
- avpriv_request_sample(s, "Sample rate %d", samplerate);
-
- framesize = (codec_params & 0x3FF) * 8;
- jsflag = (codec_params >> 17) & 1; /* get stereo coding mode, 1 for joint-stereo */
- st->codec->channels = 2;
- st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
- st->codec->sample_rate = samplerate;
- st->codec->bit_rate = st->codec->sample_rate * framesize * 8 / 1024;
-
- /* fake the atrac3 extradata (wav format, makes stream copy to wav work) */
- st->codec->extradata_size = 14;
- edata = av_mallocz(14 + FF_INPUT_BUFFER_PADDING_SIZE);
- if (!edata)
- return AVERROR(ENOMEM);
-
- st->codec->extradata = edata;
- AV_WL16(&edata[0], 1); // always 1
- AV_WL32(&edata[2], samplerate); // samples rate
- AV_WL16(&edata[6], jsflag); // coding mode
- AV_WL16(&edata[8], jsflag); // coding mode
- AV_WL16(&edata[10], 1); // always 1
- // AV_WL16(&edata[12], 0); // always 0
-
- avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
- break;
- case OMA_CODECID_ATRAC3P:
- st->codec->channels = (codec_params >> 10) & 7;
- framesize = ((codec_params & 0x3FF) * 8) + 8;
- 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");
- break;
- case OMA_CODECID_MP3:
- st->need_parsing = AVSTREAM_PARSE_FULL;
- framesize = 1024;
- break;
- case OMA_CODECID_LPCM:
- /* PCM 44.1 kHz 16 bit stereo big-endian */
- st->codec->channels = 2;
- st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
- st->codec->sample_rate = 44100;
- framesize = 1024;
- /* bit rate = sample rate x PCM block align (= 4) x 8 */
- st->codec->bit_rate = st->codec->sample_rate * 32;
- st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
- avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
- break;
- default:
- av_log(s, AV_LOG_ERROR, "Unsupported codec %d!\n",buf[32]);
- return -1;
+ case OMA_CODECID_ATRAC3:
+ samplerate = ff_oma_srate_tab[(codec_params >> 13) & 7] * 100;
+ if (!samplerate) {
+ av_log(s, AV_LOG_ERROR, "Unsupported sample rate\n");
+ return AVERROR_INVALIDDATA;
+ }
+ if (samplerate != 44100)
+ avpriv_request_sample(s, "Sample rate %d", samplerate);
+
+ framesize = (codec_params & 0x3FF) * 8;
+
+ /* get stereo coding mode, 1 for joint-stereo */
+ jsflag = (codec_params >> 17) & 1;
+
+ st->codecpar->channels = 2;
+ st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
+ st->codecpar->sample_rate = samplerate;
+ st->codecpar->bit_rate = st->codecpar->sample_rate * framesize * 8 / 1024;
+
+ /* fake the ATRAC3 extradata
+ * (wav format, makes stream copy to wav work) */
+ st->codecpar->extradata_size = 14;
+ edata = av_mallocz(14 + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!edata)
+ return AVERROR(ENOMEM);
+
+ st->codecpar->extradata = edata;
+ AV_WL16(&edata[0], 1); // always 1
+ AV_WL32(&edata[2], samplerate); // samples rate
+ AV_WL16(&edata[6], jsflag); // coding mode
+ AV_WL16(&edata[8], jsflag); // coding mode
+ AV_WL16(&edata[10], 1); // always 1
+ // AV_WL16(&edata[12], 0); // always 0
+
+ avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
+ break;
+ case OMA_CODECID_ATRAC3P:
+ channel_id = (codec_params >> 10) & 7;
+ if (!channel_id) {
+ av_log(s, AV_LOG_ERROR,
+ "Invalid ATRAC-X channel id: %"PRIu32"\n", channel_id);
+ return AVERROR_INVALIDDATA;
+ }
+ st->codecpar->channel_layout = ff_oma_chid_to_native_layout[channel_id - 1];
+ st->codecpar->channels = ff_oma_chid_to_num_channels[channel_id - 1];
+ framesize = ((codec_params & 0x3FF) * 8) + 8;
+ samplerate = ff_oma_srate_tab[(codec_params >> 13) & 7] * 100;
+ if (!samplerate) {
+ av_log(s, AV_LOG_ERROR, "Unsupported sample rate\n");
+ return AVERROR_INVALIDDATA;
+ }
+ st->codecpar->sample_rate = samplerate;
+ st->codecpar->bit_rate = samplerate * framesize * 8 / 2048;
+ avpriv_set_pts_info(st, 64, 1, samplerate);
+ break;
+ case OMA_CODECID_MP3:
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ framesize = 1024;
+ break;
+ case OMA_CODECID_LPCM:
+ /* PCM 44.1 kHz 16 bit stereo big-endian */
+ st->codecpar->channels = 2;
+ st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
+ st->codecpar->sample_rate = 44100;
+ framesize = 1024;
+ /* bit rate = sample rate x PCM block align (= 4) x 8 */
+ st->codecpar->bit_rate = st->codecpar->sample_rate * 32;
+ st->codecpar->bits_per_coded_sample =
+ av_get_bits_per_sample(st->codecpar->codec_id);
+ avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
+ break;
+ default:
+ av_log(s, AV_LOG_ERROR, "Unsupported codec %d!\n", buf[32]);
+ return AVERROR(ENOSYS);
}
- st->codec->block_align = framesize;
+ st->codecpar->block_align = framesize;
return 0;
}
static int oma_read_packet(AVFormatContext *s, AVPacket *pkt)
{
- OMAContext *oc = s->priv_data;
- int packet_size = s->streams[0]->codec->block_align;
- int ret = av_get_packet(s->pb, pkt, packet_size);
+ OMAContext *oc = s->priv_data;
+ AVStream *st = s->streams[0];
+ int packet_size = st->codecpar->block_align;
+ int byte_rate = st->codecpar->bit_rate >> 3;
+ int64_t pos = avio_tell(s->pb);
+ int ret = av_get_packet(s->pb, pkt, packet_size);
+
+ if (ret < packet_size)
+ pkt->flags |= AV_PKT_FLAG_CORRUPT;
- if (ret <= 0)
- return AVERROR(EIO);
+ if (ret < 0)
+ return ret;
+ if (!ret)
+ return AVERROR_EOF;
pkt->stream_index = 0;
+ if (pos > 0) {
+ pkt->pts =
+ pkt->dts = av_rescale(pos, st->time_base.den,
+ byte_rate * (int64_t)st->time_base.num);
+ }
+
if (oc->encrypted) {
- /* previous unencrypted block saved in IV for the next packet (CBC mode) */
- av_des_crypt(&oc->av_des, pkt->data, pkt->data, (packet_size >> 3), oc->iv, 1);
+ /* previous unencrypted block saved in IV for
+ * the next packet (CBC mode) */
+ if (ret == packet_size)
+ av_des_crypt(oc->av_des, pkt->data, pkt->data,
+ (packet_size >> 3), oc->iv, 1);
+ else
+ memset(oc->iv, 0, 8);
}
return ret;
static int oma_read_probe(AVProbeData *p)
{
- const uint8_t *buf;
+ const uint8_t *buf = p->buf;
unsigned tag_len = 0;
- buf = p->buf;
-
- if (p->buf_size < ID3v2_HEADER_SIZE ||
- !ff_id3v2_match(buf, ID3v2_EA3_MAGIC) ||
- buf[3] != 3 || // version must be 3
- buf[4]) // flags byte zero
- return 0;
-
- tag_len = ff_id3v2_tag_len(buf);
+ if (p->buf_size >= ID3v2_HEADER_SIZE && ff_id3v2_match(buf, ID3v2_EA3_MAGIC))
+ tag_len = ff_id3v2_tag_len(buf);
/* This check cannot overflow as tag_len has at most 28 bits */
if (p->buf_size < tag_len + 5)
/* EA3 header comes late, might be outside of the probe buffer */
- return AVPROBE_SCORE_MAX / 2;
+ return tag_len ? AVPROBE_SCORE_EXTENSION : 0;
buf += tag_len;
return 0;
}
-static int oma_read_seek(struct AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
+static int oma_read_seek(struct AVFormatContext *s,
+ int stream_index, int64_t timestamp, int flags)
{
OMAContext *oc = s->priv_data;
-
- ff_pcm_read_seek(s, stream_index, timestamp, flags);
-
- if (oc->encrypted) {
- /* readjust IV for CBC */
- int64_t pos = avio_tell(s->pb);
- if (pos < oc->content_start)
- memset(oc->iv, 0, 8);
- else {
- if (avio_seek(s->pb, -8, SEEK_CUR) < 0 || avio_read(s->pb, oc->iv, 8) < 8) {
- memset(oc->iv, 0, 8);
- return -1;
- }
- }
+ int err = ff_pcm_read_seek(s, stream_index, timestamp, flags);
+
+ if (!oc->encrypted)
+ return err;
+
+ /* readjust IV for CBC */
+ if (err || avio_tell(s->pb) < oc->content_start)
+ goto wipe;
+ if ((err = avio_seek(s->pb, -8, SEEK_CUR)) < 0)
+ goto wipe;
+ if ((err = avio_read(s->pb, oc->iv, 8)) < 8) {
+ if (err >= 0)
+ err = AVERROR_EOF;
+ goto wipe;
}
+ return 0;
+wipe:
+ memset(oc->iv, 0, 8);
+ return err;
+}
+
+static int oma_read_close(AVFormatContext *s)
+{
+ OMAContext *oc = s->priv_data;
+ av_free(oc->av_des);
return 0;
}
.read_header = oma_read_header,
.read_packet = oma_read_packet,
.read_seek = oma_read_seek,
+ .read_close = oma_read_close,
.flags = AVFMT_GENERIC_INDEX,
.extensions = "oma,omg,aa3",
.codec_tag = (const AVCodecTag* const []){ff_oma_codec_tags, 0},
projects / ffmpeg / blobdiff