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ffmpeg.wasm-core
Commit c1401054 authored by Luca Barbato's avatar Luca Barbato
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oma: K&R formatting cosmetics

parent 26a44143
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Inline Side-by-side
Showing with 103 additions and 84 deletions
libavformat/omadec.c
View file @ c1401054
......@@ -74,18 +74,20 @@ typedef struct OMAContext {
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;
......@@ -140,7 +142,8 @@ static int rprobe(AVFormatContext *s, uint8_t *enc_header, const uint8_t *r_val)
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, int size,
const uint8_t *n_val)
{
OMAContext *oc = s->priv_data;
uint32_t pos, taglen, datalen;
......@@ -156,10 +159,10 @@ static int nprobe(AVFormatContext *s, uint8_t *enc_header, int size, const uint8
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)
if (taglen + (((uint64_t)datalen) << 4) + 44 > size)
return -1;
pos += 44 + taglen;
......@@ -201,7 +204,8 @@ static int decrypt_init(AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header)
}
if (geob->datasize < 64) {
av_log(s, AV_LOG_ERROR, "Invalid GEOB data size: %u\n", geob->datasize);
av_log(s, AV_LOG_ERROR,
"Invalid GEOB data size: %u\n", geob->datasize);
return -1;
}
......@@ -225,7 +229,9 @@ static int decrypt_init(AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header)
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);
......@@ -236,10 +242,11 @@ static int decrypt_init(AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header)
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, oc->r_val) ||
!nprobe(s, gdata, geob->datasize, oc->n_val))
break;
}
if (i >= sizeof(leaf_table)) {
......@@ -250,7 +257,8 @@ static int decrypt_init(AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header)
/* 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_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 */
......@@ -275,7 +283,8 @@ static int oma_read_header(AVFormatContext *s)
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;
}
......@@ -298,74 +307,80 @@ static int oma_read_header(AVFormatContext *s)
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->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);
switch (buf[32]) {
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;
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;
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->codec->sample_rate = samplerate;
st->codec->bit_rate = samplerate * framesize * 8 / 1024;
avpriv_set_pts_info(st, 64, 1, samplerate);
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->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;
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->codec->sample_rate = samplerate;
st->codec->bit_rate = samplerate * framesize * 8 / 1024;
avpriv_set_pts_info(st, 64, 1, samplerate);
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;
}
st->codec->block_align = framesize;
......@@ -386,8 +401,10 @@ static int oma_read_packet(AVFormatContext *s, AVPacket *pkt)
pkt->stream_index = 0;
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) */
av_des_crypt(&oc->av_des, pkt->data, pkt->data,
(packet_size >> 3), oc->iv, 1);
}
return ret;
......@@ -421,7 +438,8 @@ static int oma_read_probe(AVProbeData *p)
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;
......@@ -433,7 +451,8 @@ static int oma_read_seek(struct AVFormatContext *s, int stream_index, int64_t ti
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) {
if (avio_seek(s->pb, -8, SEEK_CUR) < 0 ||
avio_read(s->pb, oc->iv, 8) < 8) {
memset(oc->iv, 0, 8);
return -1;
}
......
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