* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+//#define DEBUG
+
#include "libavutil/common.h"
+#include "libavutil/avstring.h"
#include "libavcodec/mpegaudio.h"
#include "avformat.h"
#include "riff.h"
#include "asf.h"
#include "asfcrypt.h"
+#include "avlanguage.h"
void ff_mms_set_stream_selection(URLContext *h, AVFormatContext *format);
/**********************************/
/* decoding */
-//#define DEBUG
+static int guidcmp(const void *g1, const void *g2)
+{
+ return memcmp(g1, g2, sizeof(ff_asf_guid));
+}
#ifdef DEBUG
#define PRINT_IF_GUID(g,cmp) \
else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
else PRINT_IF_GUID(g, ff_asf_metadata_header);
else PRINT_IF_GUID(g, stream_bitrate_guid);
+ else PRINT_IF_GUID(g, ff_asf_language_guid);
else
dprintf(NULL, "(GUID: unknown) ");
for(i=0;i<16;i++)
#define print_guid(g)
#endif
-static int guidcmp(const void *g1, const void *g2)
-{
- return memcmp(g1, g2, sizeof(ff_asf_guid));
-}
-
static void get_guid(ByteIOContext *s, ff_asf_guid *g)
{
assert(sizeof(*g) == 16);
static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
{
char* q = buf;
- len /= 2;
- while (len--) {
+ for (; len > 1; len -= 2) {
uint8_t tmp;
PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
}
+ if (len > 0)
+ url_fskip(pb, len);
*q = '\0';
}
static void get_tag(AVFormatContext *s, const char *key, int type, int len)
{
- char value[1024];
+ char *value;
+
+ if ((unsigned)len >= UINT_MAX)
+ return;
+
+ value = av_malloc(len+1);
+ if (!value)
+ return;
+
if (type <= 1) { // unicode or byte
- get_str16_nolen(s->pb, len, value, sizeof(value));
+ get_str16_nolen(s->pb, len, value, len);
} else if (type <= 5) { // boolean or DWORD or QWORD or WORD
uint64_t num = get_value(s->pb, type);
- snprintf(value, sizeof(value), "%"PRIu64, num);
+ snprintf(value, len, "%"PRIu64, num);
} else {
url_fskip(s->pb, len);
return;
}
if (!strncmp(key, "WM/", 3))
key += 3;
- av_metadata_set(&s->metadata, key, value);
+ av_metadata_set2(&s->metadata, key, value, AV_METADATA_DONT_STRDUP_VAL);
}
static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
asf->hdr.min_pktsize = get_le32(pb);
asf->hdr.max_pktsize = get_le32(pb);
asf->hdr.max_bitrate = get_le32(pb);
- asf->packet_size = asf->hdr.max_pktsize;
+ s->packet_size = asf->hdr.max_pktsize;
} else if (!guidcmp(&g, &ff_asf_stream_header)) {
enum CodecType type;
int type_specific_size, sizeX;
st->priv_data = asf_st;
start_time = asf->hdr.preroll;
+ asf_st->stream_language_index = 128; // invalid stream index means no language info
+
if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
- st->duration = asf->hdr.send_time /
+ st->duration = asf->hdr.play_time /
(10000000 / 1000) - start_time;
}
get_guid(pb, &g);
st->codec->codec_type = type;
if (type == CODEC_TYPE_AUDIO) {
- get_wav_header(pb, st->codec, type_specific_size);
+ ff_get_wav_header(pb, st->codec, type_specific_size);
if (is_dvr_ms_audio) {
// codec_id and codec_tag are unreliable in dvr_ms
// files. Set them later by probing stream.
/* This is true for all paletted codecs implemented in ffmpeg */
if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
-#ifdef WORDS_BIGENDIAN
+#if HAVE_BIGENDIAN
for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
#else
}
st->codec->codec_tag = tag1;
- st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
+ st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
if(tag1 == MKTAG('D', 'V', 'R', ' '))
st->need_parsing = AVSTREAM_PARSE_FULL;
}
// av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
asf->stream_bitrates[stream_id]= bitrate;
}
+ } else if (!guidcmp(&g, &ff_asf_language_guid)) {
+ int j;
+ int stream_count = get_le16(pb);
+ for(j = 0; j < stream_count; j++) {
+ char lang[6];
+ unsigned int lang_len = get_byte(pb);
+ get_str16_nolen(pb, lang_len, lang, sizeof(lang));
+ if (j < 128)
+ av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
+ }
} else if (!guidcmp(&g, &ff_asf_extended_content_header)) {
int desc_count, i;
} else if (!guidcmp(&g, &ff_asf_ext_stream_header)) {
int ext_len, payload_ext_ct, stream_ct;
uint32_t ext_d, leak_rate, stream_num;
+ unsigned int stream_languageid_index;
get_le64(pb); // starttime
get_le64(pb); // endtime
get_le32(pb); // max-object-size
get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
stream_num = get_le16(pb); // stream-num
- get_le16(pb); // stream-language-id-index
+
+ stream_languageid_index = get_le16(pb); // stream-language-id-index
+ if (stream_num < 128)
+ asf->streams[stream_num].stream_language_index = stream_languageid_index;
+
get_le64(pb); // avg frametime in 100ns units
stream_ct = get_le16(pb); //stream-name-count
payload_ext_ct = get_le16(pb); //payload-extension-system-count
} else if (url_feof(pb)) {
return -1;
} else {
+ if (!s->keylen) {
+ if (!guidcmp(&g, &ff_asf_content_encryption)) {
+ av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
+ } else if (!guidcmp(&g, &ff_asf_ext_content_encryption)) {
+ av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
+ } else if (!guidcmp(&g, &ff_asf_digital_signature)) {
+ av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
+ }
+ }
url_fseek(pb, gsize - 24, SEEK_CUR);
}
}
&st->sample_aspect_ratio.den,
dar[i].num, dar[i].den, INT_MAX);
//av_log(s, AV_LOG_ERROR, "dar %d:%d sar=%d:%d\n", dar[i].num, dar[i].den, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
+
+ // copy and convert language codes to the frontend
+ if (asf->streams[i].stream_language_index < 128) {
+ const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
+ if (rfc1766 && strlen(rfc1766) > 1) {
+ const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
+ const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
+ if (iso6392)
+ av_metadata_set(&st->metadata, "language", iso6392);
+ }
+ }
}
}
default: var = defval; break; \
}
-int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
+/**
+ * Load a single ASF packet into the demuxer.
+ * @param s demux context
+ * @param pb context to read data from
+ * @returns 0 on success, <0 on error
+ */
+static int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
{
ASFContext *asf = s->priv_data;
uint32_t packet_length, padsize;
int rsize = 8;
int c, d, e, off;
- off= (url_ftell(pb) - s->data_offset) % asf->packet_size + 3;
+ // if we do not know packet size, allow skipping up to 32 kB
+ off= 32768;
+ if (s->packet_size > 0)
+ off= (url_ftell(pb) - s->data_offset) % s->packet_size + 3;
c=d=e=-1;
while(off-- > 0){
}
if (c != 0x82) {
+ /**
+ * This code allows handling of -EAGAIN at packet boundaries (i.e.
+ * if the packet sync code above triggers -EAGAIN). This does not
+ * imply complete -EAGAIN handling support at random positions in
+ * the stream.
+ */
+ if (url_ferror(pb) == AVERROR(EAGAIN))
+ return AVERROR(EAGAIN);
if (!url_feof(pb))
av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
}
asf->packet_flags = c;
asf->packet_property = d;
- DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
+ DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
//the following checks prevent overflows and infinite loops
- if(packet_length >= (1U<<29)){
+ if(!packet_length || packet_length >= (1U<<29)){
av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
return -1;
}
if (packet_length < asf->hdr.min_pktsize)
padsize += asf->hdr.min_pktsize - packet_length;
asf->packet_padsize = padsize;
- dprintf(s, "packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
+ dprintf(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
return 0;
}
return 0;
}
-int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
+/**
+ * Parse data from individual ASF packets (which were previously loaded
+ * with asf_get_packet()).
+ * @param s demux context
+ * @param pb context to read data from
+ * @param pkt pointer to store packet data into
+ * @returns 0 if data was stored in pkt, <0 on error or 1 if more ASF
+ * packets need to be loaded (through asf_get_packet())
+ */
+static int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
{
ASFContext *asf = s->priv_data;
ASFStream *asf_st = 0;
/* read data */
//printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
- // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
+ // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
// asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
asf->packet_size_left -= asf->packet_frag_size;
if (asf->packet_size_left < 0)
static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
{
- ASFContext *asf = s->priv_data;
AVPacket pkt1, *pkt = &pkt1;
ASFStream *asf_st;
int64_t pts;
start_pos[i]= pos;
}
- pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
+ if (s->packet_size > 0)
+ pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
*ppos= pos;
url_fseek(s->pb, pos, SEEK_SET);
asf_st= s->streams[i]->priv_data;
-// assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
+// assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
pos= asf_st->packet_pos;
av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
get_guid(s->pb, &g);
if (!guidcmp(&g, &index_guid)) {
- int64_t itime;
+ int64_t itime, last_pos=-1;
int pct, ict;
- int64_t gsize= get_le64(s->pb);
+ int64_t av_unused gsize= get_le64(s->pb);
get_guid(s->pb, &g);
itime=get_le64(s->pb);
pct=get_le32(s->pb);
for (i=0;i<ict;i++){
int pktnum=get_le32(s->pb);
int pktct =get_le16(s->pb);
- int64_t pos = s->data_offset + asf->packet_size*(int64_t)pktnum;
+ int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
int64_t index_pts= av_rescale(itime, i, 10000);
+ if(pos != last_pos){
av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
- av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
+ av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
+ last_pos=pos;
+ }
}
asf->index_read= 1;
}
int64_t pos;
int index;
- if (asf->packet_size <= 0)
+ if (s->packet_size <= 0)
return -1;
/* Try using the protocol's read_seek if available */