/*
- * Matroska file demuxer (no muxer yet)
- * Copyright (c) 2003-2004 The ffmpeg Project
+ * Matroska file demuxer
+ * Copyright (c) 2003-2008 The FFmpeg Project
*
* This file is part of FFmpeg.
*
* Matroska file demuxer
* by Ronald Bultje <rbultje@ronald.bitfreak.net>
* with a little help from Moritz Bunkus <moritz@bunkus.org>
- * Specs available on the matroska project page:
- * http://www.matroska.org/.
+ * totally reworked by Aurelien Jacobs <aurel@gnuage.org>
+ * Specs available on the Matroska project page: http://www.matroska.org/.
*/
#include "avformat.h"
EbmlList pos;
} MatroskaIndex;
+typedef struct {
+ char *name;
+ char *string;
+ EbmlList sub;
+} MatroskaTag;
+
typedef struct {
uint64_t id;
uint64_t pos;
} MatroskaSeekhead;
-typedef struct MatroskaLevel {
+typedef struct {
uint64_t start;
uint64_t length;
} MatroskaLevel;
-typedef struct MatroskaDemuxContext {
+typedef struct {
AVFormatContext *ctx;
- /* ebml stuff */
+ /* EBML stuff */
int num_levels;
MatroskaLevel levels[EBML_MAX_DEPTH];
int level_up;
- /* timescale in the file */
uint64_t time_scale;
double duration;
char *title;
EbmlList attachments;
EbmlList chapters;
EbmlList index;
+ EbmlList tags;
EbmlList seekhead;
- /* num_streams is the number of streams that av_new_stream() was called
- * for ( = that are available to the calling program). */
- int num_streams;
-
- /* cache for ID peeking */
- uint32_t peek_id;
-
/* byte position of the segment inside the stream */
offset_t segment_start;
- /* The packet queue. */
+ /* the packet queue */
AVPacket **packets;
int num_packets;
- /* have we already parse metadata/cues/clusters? */
- int metadata_parsed;
- int index_parsed;
int done;
+ int has_cluster_id;
/* What to skip before effectively reading a packet. */
int skip_to_keyframe;
AVStream *skip_to_stream;
} MatroskaDemuxContext;
+typedef struct {
+ uint64_t duration;
+ int64_t reference;
+ EbmlBin bin;
+} MatroskaBlock;
+
+typedef struct {
+ uint64_t timecode;
+ EbmlList blocks;
+} MatroskaCluster;
+
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(*x))
static EbmlSyntax ebml_header[] = {
{ EBML_ID_DOCTYPEREADVERSION, EBML_UINT, 0, offsetof(Ebml,doctype_version), {.u=1} },
{ EBML_ID_EBMLVERSION, EBML_NONE },
{ EBML_ID_DOCTYPEVERSION, EBML_NONE },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
{ MATROSKA_ID_MUXINGAPP, EBML_NONE },
{ MATROSKA_ID_DATEUTC, EBML_NONE },
{ MATROSKA_ID_SEGMENTUID, EBML_NONE },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
{ MATROSKA_ID_VIDEOPIXELWIDTH, EBML_UINT, 0, offsetof(MatroskaTrackVideo,pixel_width) },
{ MATROSKA_ID_VIDEOPIXELHEIGHT, EBML_UINT, 0, offsetof(MatroskaTrackVideo,pixel_height) },
{ MATROSKA_ID_VIDEOCOLORSPACE, EBML_UINT, 0, offsetof(MatroskaTrackVideo,fourcc) },
+ { MATROSKA_ID_VIDEOPIXELCROPB, EBML_NONE },
+ { MATROSKA_ID_VIDEOPIXELCROPT, EBML_NONE },
+ { MATROSKA_ID_VIDEOPIXELCROPL, EBML_NONE },
+ { MATROSKA_ID_VIDEOPIXELCROPR, EBML_NONE },
+ { MATROSKA_ID_VIDEODISPLAYUNIT, EBML_NONE },
{ MATROSKA_ID_VIDEOFLAGINTERLACED,EBML_NONE },
{ MATROSKA_ID_VIDEOSTEREOMODE, EBML_NONE },
{ MATROSKA_ID_VIDEOASPECTRATIO, EBML_NONE },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
{ MATROSKA_ID_AUDIOOUTSAMPLINGFREQ,EBML_FLOAT,0,offsetof(MatroskaTrackAudio,out_samplerate) },
{ MATROSKA_ID_AUDIOBITDEPTH, EBML_UINT, 0, offsetof(MatroskaTrackAudio,bitdepth) },
{ MATROSKA_ID_AUDIOCHANNELS, EBML_UINT, 0, offsetof(MatroskaTrackAudio,channels), {.u=1} },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_track_encoding_compression[] = {
{ MATROSKA_ID_ENCODINGCOMPALGO, EBML_UINT, 0, offsetof(MatroskaTrackCompression,algo), {.u=0} },
{ MATROSKA_ID_ENCODINGCOMPSETTINGS,EBML_BIN, 0, offsetof(MatroskaTrackCompression,settings) },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
{ MATROSKA_ID_ENCODINGSCOPE, EBML_UINT, 0, offsetof(MatroskaTrackEncoding,scope), {.u=1} },
{ MATROSKA_ID_ENCODINGTYPE, EBML_UINT, 0, offsetof(MatroskaTrackEncoding,type), {.u=0} },
{ MATROSKA_ID_ENCODINGCOMPRESSION,EBML_NEST, 0, offsetof(MatroskaTrackEncoding,compression), {.n=matroska_track_encoding_compression} },
- { EBML_ID_VOID, EBML_NONE },
+ { MATROSKA_ID_ENCODINGORDER, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_track_encodings[] = {
{ MATROSKA_ID_TRACKCONTENTENCODING, EBML_NEST, sizeof(MatroskaTrackEncoding), offsetof(MatroskaTrack,encodings), {.n=matroska_track_encoding} },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
{ MATROSKA_ID_CODECDOWNLOADURL, EBML_NONE },
{ MATROSKA_ID_TRACKMINCACHE, EBML_NONE },
{ MATROSKA_ID_TRACKMAXCACHE, EBML_NONE },
- { EBML_ID_VOID, EBML_NONE },
+ { MATROSKA_ID_TRACKMAXBLKADDID, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_tracks[] = {
{ MATROSKA_ID_TRACKENTRY, EBML_NEST, sizeof(MatroskaTrack), offsetof(MatroskaDemuxContext,tracks), {.n=matroska_track} },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
{ MATROSKA_ID_FILENAME, EBML_UTF8, 0, offsetof(MatroskaAttachement,filename) },
{ MATROSKA_ID_FILEMIMETYPE, EBML_STR, 0, offsetof(MatroskaAttachement,mime) },
{ MATROSKA_ID_FILEDATA, EBML_BIN, 0, offsetof(MatroskaAttachement,bin) },
+ { MATROSKA_ID_FILEDESC, EBML_NONE },
{ MATROSKA_ID_FILEUID, EBML_NONE },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_attachments[] = {
{ MATROSKA_ID_ATTACHEDFILE, EBML_NEST, sizeof(MatroskaAttachement), offsetof(MatroskaDemuxContext,attachments), {.n=matroska_attachment} },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_chapter_display[] = {
{ MATROSKA_ID_CHAPSTRING, EBML_UTF8, 0, offsetof(MatroskaChapter,title) },
- { EBML_ID_VOID, EBML_NONE },
+ { MATROSKA_ID_CHAPLANG, EBML_NONE },
{ 0 }
};
{ MATROSKA_ID_CHAPTERUID, EBML_UINT, 0, offsetof(MatroskaChapter,uid) },
{ MATROSKA_ID_CHAPTERDISPLAY, EBML_NEST, 0, 0, {.n=matroska_chapter_display} },
{ MATROSKA_ID_CHAPTERFLAGHIDDEN, EBML_NONE },
- { EBML_ID_VOID, EBML_NONE },
+ { MATROSKA_ID_CHAPTERFLAGENABLED, EBML_NONE },
+ { MATROSKA_ID_CHAPTERPHYSEQUIV, EBML_NONE },
+ { MATROSKA_ID_CHAPTERATOM, EBML_NONE },
{ 0 }
};
{ MATROSKA_ID_EDITIONUID, EBML_NONE },
{ MATROSKA_ID_EDITIONFLAGHIDDEN, EBML_NONE },
{ MATROSKA_ID_EDITIONFLAGDEFAULT, EBML_NONE },
- { EBML_ID_VOID, EBML_NONE },
+ { MATROSKA_ID_EDITIONFLAGORDERED, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_chapters[] = {
{ MATROSKA_ID_EDITIONENTRY, EBML_NEST, 0, 0, {.n=matroska_chapter} },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_index_pos[] = {
{ MATROSKA_ID_CUETRACK, EBML_UINT, 0, offsetof(MatroskaIndexPos,track) },
{ MATROSKA_ID_CUECLUSTERPOSITION, EBML_UINT, 0, offsetof(MatroskaIndexPos,pos) },
- { EBML_ID_VOID, EBML_NONE },
+ { MATROSKA_ID_CUEBLOCKNUMBER, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_index_entry[] = {
{ MATROSKA_ID_CUETIME, EBML_UINT, 0, offsetof(MatroskaIndex,time) },
{ MATROSKA_ID_CUETRACKPOSITION, EBML_NEST, sizeof(MatroskaIndexPos), offsetof(MatroskaIndex,pos), {.n=matroska_index_pos} },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_index[] = {
{ MATROSKA_ID_POINTENTRY, EBML_NEST, sizeof(MatroskaIndex), offsetof(MatroskaDemuxContext,index), {.n=matroska_index_entry} },
- { EBML_ID_VOID, EBML_NONE },
+ { 0 }
+};
+
+static EbmlSyntax matroska_simpletag[] = {
+ { MATROSKA_ID_TAGNAME, EBML_UTF8, 0, offsetof(MatroskaTag,name) },
+ { MATROSKA_ID_TAGSTRING, EBML_UTF8, 0, offsetof(MatroskaTag,string) },
+ { MATROSKA_ID_SIMPLETAG, EBML_NEST, sizeof(MatroskaTag), offsetof(MatroskaTag,sub), {.n=matroska_simpletag} },
+ { MATROSKA_ID_TAGLANG, EBML_NONE },
+ { MATROSKA_ID_TAGDEFAULT, EBML_NONE },
+ { 0 }
+};
+
+static EbmlSyntax matroska_tag[] = {
+ { MATROSKA_ID_SIMPLETAG, EBML_NEST, sizeof(MatroskaTag), 0, {.n=matroska_simpletag} },
+ { MATROSKA_ID_TAGTARGETS, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_tags[] = {
- { EBML_ID_VOID, EBML_NONE },
+ { MATROSKA_ID_TAG, EBML_NEST, 0, offsetof(MatroskaDemuxContext,tags), {.n=matroska_tag} },
{ 0 }
};
static EbmlSyntax matroska_seekhead_entry[] = {
{ MATROSKA_ID_SEEKID, EBML_UINT, 0, offsetof(MatroskaSeekhead,id) },
{ MATROSKA_ID_SEEKPOSITION, EBML_UINT, 0, offsetof(MatroskaSeekhead,pos), {.u=-1} },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
static EbmlSyntax matroska_seekhead[] = {
{ MATROSKA_ID_SEEKENTRY, EBML_NEST, sizeof(MatroskaSeekhead), offsetof(MatroskaDemuxContext,seekhead), {.n=matroska_seekhead_entry} },
- { EBML_ID_VOID, EBML_NONE },
{ 0 }
};
-/*
- * The first few functions handle EBML file parsing. The rest
- * is the document interpretation. Matroska really just is a
- * EBML file.
- */
+static EbmlSyntax matroska_segment[] = {
+ { MATROSKA_ID_INFO, EBML_NEST, 0, 0, {.n=matroska_info } },
+ { MATROSKA_ID_TRACKS, EBML_NEST, 0, 0, {.n=matroska_tracks } },
+ { MATROSKA_ID_ATTACHMENTS, EBML_NEST, 0, 0, {.n=matroska_attachments} },
+ { MATROSKA_ID_CHAPTERS, EBML_NEST, 0, 0, {.n=matroska_chapters } },
+ { MATROSKA_ID_CUES, EBML_NEST, 0, 0, {.n=matroska_index } },
+ { MATROSKA_ID_TAGS, EBML_NEST, 0, 0, {.n=matroska_tags } },
+ { MATROSKA_ID_SEEKHEAD, EBML_NEST, 0, 0, {.n=matroska_seekhead } },
+ { MATROSKA_ID_CLUSTER, EBML_STOP, 0, offsetof(MatroskaDemuxContext,has_cluster_id) },
+ { 0 }
+};
+
+static EbmlSyntax matroska_segments[] = {
+ { MATROSKA_ID_SEGMENT, EBML_NEST, 0, 0, {.n=matroska_segment } },
+ { 0 }
+};
+
+static EbmlSyntax matroska_blockgroup[] = {
+ { MATROSKA_ID_BLOCK, EBML_BIN, 0, offsetof(MatroskaBlock,bin) },
+ { MATROSKA_ID_SIMPLEBLOCK, EBML_BIN, 0, offsetof(MatroskaBlock,bin) },
+ { MATROSKA_ID_BLOCKDURATION, EBML_UINT, 0, offsetof(MatroskaBlock,duration), {.u=AV_NOPTS_VALUE} },
+ { MATROSKA_ID_BLOCKREFERENCE, EBML_UINT, 0, offsetof(MatroskaBlock,reference) },
+ { 0 }
+};
+
+static EbmlSyntax matroska_cluster[] = {
+ { MATROSKA_ID_CLUSTERTIMECODE,EBML_UINT,0, offsetof(MatroskaCluster,timecode) },
+ { MATROSKA_ID_BLOCKGROUP, EBML_NEST, sizeof(MatroskaBlock), offsetof(MatroskaCluster,blocks), {.n=matroska_blockgroup} },
+ { MATROSKA_ID_SIMPLEBLOCK, EBML_PASS, sizeof(MatroskaBlock), offsetof(MatroskaCluster,blocks), {.n=matroska_blockgroup} },
+ { MATROSKA_ID_CLUSTERPOSITION,EBML_NONE },
+ { MATROSKA_ID_CLUSTERPREVSIZE,EBML_NONE },
+ { 0 }
+};
+
+static EbmlSyntax matroska_clusters[] = {
+ { MATROSKA_ID_CLUSTER, EBML_NEST, 0, 0, {.n=matroska_cluster} },
+ { MATROSKA_ID_INFO, EBML_NONE },
+ { MATROSKA_ID_CUES, EBML_NONE },
+ { MATROSKA_ID_TAGS, EBML_NONE },
+ { MATROSKA_ID_SEEKHEAD, EBML_NONE },
+ { 0 }
+};
+
+#define SIZE_OFF(x) sizeof(((AVFormatContext*)0)->x),offsetof(AVFormatContext,x)
+const struct {
+ const char name[16];
+ int size;
+ int offset;
+} metadata[] = {
+ { "TITLE", SIZE_OFF(title) },
+ { "ARTIST", SIZE_OFF(author) },
+ { "WRITTEN_BY", SIZE_OFF(author) },
+ { "LEAD_PERFORMER", SIZE_OFF(author) },
+ { "COPYRIGHT", SIZE_OFF(copyright) },
+ { "COMMENT", SIZE_OFF(comment) },
+ { "ALBUM", SIZE_OFF(album) },
+ { "DATE_WRITTEN", SIZE_OFF(year) },
+ { "DATE_RELEASED", SIZE_OFF(year) },
+ { "PART_NUMBER", SIZE_OFF(track) },
+ { "GENRE", SIZE_OFF(genre) },
+};
/*
- * Return: the amount of levels in the hierarchy that the
- * current element lies higher than the previous one.
- * The opposite isn't done - that's auto-done using master
- * element reading.
+ * Return: Whether we reached the end of a level in the hierarchy or not.
*/
-
-static int
-ebml_read_element_level_up (MatroskaDemuxContext *matroska)
+static int ebml_level_end(MatroskaDemuxContext *matroska)
{
ByteIOContext *pb = matroska->ctx->pb;
offset_t pos = url_ftell(pb);
- int num = 0;
- while (matroska->num_levels > 0) {
+ if (matroska->num_levels > 0) {
MatroskaLevel *level = &matroska->levels[matroska->num_levels - 1];
-
- if (pos >= level->start + level->length) {
+ if (pos - level->start >= level->length) {
matroska->num_levels--;
- num++;
- } else {
- break;
+ return 1;
}
}
-
- return num;
+ return 0;
}
/*
* number of 0-bits followed by a one. The position of the first
* "one" bit inside the first byte indicates the length of this
* number.
- * Returns: num. of bytes read. < 0 on error.
+ * Returns: number of bytes read, < 0 on error
*/
-
-static int
-ebml_read_num (MatroskaDemuxContext *matroska,
- int max_size,
- uint64_t *number)
+static int ebml_read_num(MatroskaDemuxContext *matroska, ByteIOContext *pb,
+ int max_size, uint64_t *number)
{
- ByteIOContext *pb = matroska->ctx->pb;
int len_mask = 0x80, read = 1, n = 1;
int64_t total = 0;
- /* the first byte tells us the length in bytes - get_byte() can normally
+ /* The first byte tells us the length in bytes - get_byte() can normally
* return 0, but since that's not a valid first ebmlID byte, we can
* use it safely here to catch EOS. */
if (!(total = get_byte(pb))) {
return read;
}
-/*
- * Read: the element content data ID.
- * Return: the number of bytes read or < 0 on error.
- */
-
-static int
-ebml_read_element_id (MatroskaDemuxContext *matroska,
- uint32_t *id,
- int *level_up)
-{
- int read;
- uint64_t total;
-
- /* if we re-call this, use our cached ID */
- if (matroska->peek_id != 0) {
- if (level_up)
- *level_up = 0;
- *id = matroska->peek_id;
- return 0;
- }
-
- /* read out the "EBML number", include tag in ID */
- if ((read = ebml_read_num(matroska, 4, &total)) < 0)
- return read;
- *id = matroska->peek_id = total | (1 << (read * 7));
-
- /* level tracking */
- if (level_up)
- *level_up = ebml_read_element_level_up(matroska);
-
- return read;
-}
-
-/*
- * Read: element content length.
- * Return: the number of bytes read or < 0 on error.
- */
-
-static int
-ebml_read_element_length (MatroskaDemuxContext *matroska,
- uint64_t *length)
-{
- /* clear cache since we're now beyond that data point */
- matroska->peek_id = 0;
-
- /* read out the "EBML number", include tag in ID */
- return ebml_read_num(matroska, 8, length);
-}
-
-/*
- * Return: the ID of the next element, or 0 on error.
- * Level_up contains the amount of levels that this
- * next element lies higher than the previous one.
- */
-
-static uint32_t
-ebml_peek_id (MatroskaDemuxContext *matroska,
- int *level_up)
-{
- uint32_t id;
-
- if (ebml_read_element_id(matroska, &id, level_up) < 0)
- return 0;
-
- return id;
-}
-
-/*
- * Seek to a given offset.
- * 0 is success, -1 is failure.
- */
-
-static int
-ebml_read_seek (MatroskaDemuxContext *matroska,
- offset_t offset)
-{
- ByteIOContext *pb = matroska->ctx->pb;
-
- /* clear ID cache, if any */
- matroska->peek_id = 0;
-
- return (url_fseek(pb, offset, SEEK_SET) == offset) ? 0 : -1;
-}
-
-/*
- * Skip the next element.
- * 0 is success, -1 is failure.
- */
-
-static int
-ebml_read_skip (MatroskaDemuxContext *matroska)
-{
- ByteIOContext *pb = matroska->ctx->pb;
- uint32_t id;
- uint64_t length;
- int res;
-
- if ((res = ebml_read_element_id(matroska, &id, NULL)) < 0 ||
- (res = ebml_read_element_length(matroska, &length)) < 0)
- return res;
-
- url_fskip(pb, length);
-
- return 0;
-}
-
/*
* Read the next element as an unsigned int.
* 0 is success, < 0 is failure.
*/
-
-static int
-ebml_read_uint (MatroskaDemuxContext *matroska,
- uint32_t *id,
- uint64_t *num)
+static int ebml_read_uint(ByteIOContext *pb, int size, uint64_t *num)
{
- ByteIOContext *pb = matroska->ctx->pb;
- int n = 0, size, res;
- uint64_t rlength;
+ int n = 0;
- if ((res = ebml_read_element_id(matroska, id, NULL)) < 0 ||
- (res = ebml_read_element_length(matroska, &rlength)) < 0)
- return res;
- size = rlength;
- if (size < 1 || size > 8) {
- offset_t pos = url_ftell(pb);
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Invalid uint element size %d at position %"PRId64" (0x%"PRIx64")\n",
- size, pos, pos);
+ if (size < 1 || size > 8)
return AVERROR_INVALIDDATA;
- }
- /* big-endian ordening; build up number */
+ /* big-endian ordering; build up number */
*num = 0;
while (n++ < size)
*num = (*num << 8) | get_byte(pb);
return 0;
}
-/*
- * Read the next element as a signed int.
- * 0 is success, < 0 is failure.
- */
-
-static int
-ebml_read_sint (MatroskaDemuxContext *matroska,
- uint32_t *id,
- int64_t *num)
-{
- ByteIOContext *pb = matroska->ctx->pb;
- int size, n = 1, negative = 0, res;
- uint64_t rlength;
-
- if ((res = ebml_read_element_id(matroska, id, NULL)) < 0 ||
- (res = ebml_read_element_length(matroska, &rlength)) < 0)
- return res;
- size = rlength;
- if (size < 1 || size > 8) {
- offset_t pos = url_ftell(pb);
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Invalid sint element size %d at position %"PRId64" (0x%"PRIx64")\n",
- size, pos, pos);
- return AVERROR_INVALIDDATA;
- }
- if ((*num = get_byte(pb)) & 0x80) {
- negative = 1;
- *num &= ~0x80;
- }
- while (n++ < size)
- *num = (*num << 8) | get_byte(pb);
-
- /* make signed */
- if (negative)
- *num = *num - (1LL << ((8 * size) - 1));
-
- return 0;
-}
-
/*
* Read the next element as a float.
* 0 is success, < 0 is failure.
*/
-
-static int
-ebml_read_float (MatroskaDemuxContext *matroska,
- uint32_t *id,
- double *num)
+static int ebml_read_float(ByteIOContext *pb, int size, double *num)
{
- ByteIOContext *pb = matroska->ctx->pb;
- int size, res;
- uint64_t rlength;
-
- if ((res = ebml_read_element_id(matroska, id, NULL)) < 0 ||
- (res = ebml_read_element_length(matroska, &rlength)) < 0)
- return res;
- size = rlength;
-
if (size == 4) {
*num= av_int2flt(get_be32(pb));
} else if(size==8){
*num= av_int2dbl(get_be64(pb));
- } else{
- offset_t pos = url_ftell(pb);
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Invalid float element size %d at position %"PRIu64" (0x%"PRIx64")\n",
- size, pos, pos);
+ } else
return AVERROR_INVALIDDATA;
- }
return 0;
}
* Read the next element as an ASCII string.
* 0 is success, < 0 is failure.
*/
-
-static int
-ebml_read_ascii (MatroskaDemuxContext *matroska,
- uint32_t *id,
- char **str)
+static int ebml_read_ascii(ByteIOContext *pb, int size, char **str)
{
- ByteIOContext *pb = matroska->ctx->pb;
- int size, res;
- uint64_t rlength;
-
- if ((res = ebml_read_element_id(matroska, id, NULL)) < 0 ||
- (res = ebml_read_element_length(matroska, &rlength)) < 0)
- return res;
- size = rlength;
-
- /* ebml strings are usually not 0-terminated, so we allocate one
+ av_free(*str);
+ /* EBML strings are usually not 0-terminated, so we allocate one
* byte more, read the string and NULL-terminate it ourselves. */
- if (size < 0 || !(*str = av_malloc(size + 1))) {
- av_log(matroska->ctx, AV_LOG_ERROR, "Memory allocation failed\n");
+ if (!(*str = av_malloc(size + 1)))
return AVERROR(ENOMEM);
- }
if (get_buffer(pb, (uint8_t *) *str, size) != size) {
- offset_t pos = url_ftell(pb);
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Read error at pos. %"PRIu64" (0x%"PRIx64")\n", pos, pos);
av_free(*str);
return AVERROR(EIO);
}
}
/*
- * Read the next element as a UTF-8 string.
+ * Read the next element as binary data.
* 0 is success, < 0 is failure.
*/
-
-static int
-ebml_read_utf8 (MatroskaDemuxContext *matroska,
- uint32_t *id,
- char **str)
+static int ebml_read_binary(ByteIOContext *pb, int length, EbmlBin *bin)
{
- return ebml_read_ascii(matroska, id, str);
+ av_free(bin->data);
+ if (!(bin->data = av_malloc(length)))
+ return AVERROR(ENOMEM);
+
+ bin->size = length;
+ bin->pos = url_ftell(pb);
+ if (get_buffer(pb, bin->data, length) != length)
+ return AVERROR(EIO);
+
+ return 0;
}
/*
* are supposed to be sub-elements which can be read separately.
* 0 is success, < 0 is failure.
*/
-
-static int
-ebml_read_master (MatroskaDemuxContext *matroska,
- uint32_t *id)
+static int ebml_read_master(MatroskaDemuxContext *matroska, int length)
{
ByteIOContext *pb = matroska->ctx->pb;
- uint64_t length;
MatroskaLevel *level;
- int res;
-
- if ((res = ebml_read_element_id(matroska, id, NULL)) < 0 ||
- (res = ebml_read_element_length(matroska, &length)) < 0)
- return res;
- /* protect... (Heaven forbids that the '>' is true) */
if (matroska->num_levels >= EBML_MAX_DEPTH) {
av_log(matroska->ctx, AV_LOG_ERROR,
"File moves beyond max. allowed depth (%d)\n", EBML_MAX_DEPTH);
return AVERROR(ENOSYS);
}
- /* remember level */
level = &matroska->levels[matroska->num_levels++];
level->start = url_ftell(pb);
level->length = length;
return 0;
}
-/*
- * Read the next element as binary data.
- * 0 is success, < 0 is failure.
- */
-
-static int
-ebml_read_binary (MatroskaDemuxContext *matroska,
- uint32_t *id,
- uint8_t **binary,
- int *size)
-{
- ByteIOContext *pb = matroska->ctx->pb;
- uint64_t rlength;
- int res;
-
- if ((res = ebml_read_element_id(matroska, id, NULL)) < 0 ||
- (res = ebml_read_element_length(matroska, &rlength)) < 0)
- return res;
- *size = rlength;
-
- if (!(*binary = av_malloc(*size))) {
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Memory allocation error\n");
- return AVERROR(ENOMEM);
- }
-
- if (get_buffer(pb, *binary, *size) != *size) {
- offset_t pos = url_ftell(pb);
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Read error at pos. %"PRIu64" (0x%"PRIx64")\n", pos, pos);
- return AVERROR(EIO);
- }
-
- return 0;
-}
-
/*
* Read signed/unsigned "EBML" numbers.
- * Return: number of bytes processed, < 0 on error.
- * XXX: use ebml_read_num().
+ * Return: number of bytes processed, < 0 on error
*/
-
-static int
-matroska_ebmlnum_uint (uint8_t *data,
- uint32_t size,
- uint64_t *num)
+static int matroska_ebmlnum_uint(MatroskaDemuxContext *matroska,
+ uint8_t *data, uint32_t size, uint64_t *num)
{
- int len_mask = 0x80, read = 1, n = 1, num_ffs = 0;
- uint64_t total;
-
- if (size <= 0)
- return AVERROR_INVALIDDATA;
-
- total = data[0];
- while (read <= 8 && !(total & len_mask)) {
- read++;
- len_mask >>= 1;
- }
- if (read > 8)
- return AVERROR_INVALIDDATA;
-
- if ((total &= (len_mask - 1)) == len_mask - 1)
- num_ffs++;
- if (size < read)
- return AVERROR_INVALIDDATA;
- while (n < read) {
- if (data[n] == 0xff)
- num_ffs++;
- total = (total << 8) | data[n];
- n++;
- }
-
- if (read == num_ffs)
- *num = (uint64_t)-1;
- else
- *num = total;
-
- return read;
+ ByteIOContext pb;
+ init_put_byte(&pb, data, size, 0, NULL, NULL, NULL, NULL);
+ return ebml_read_num(matroska, &pb, 8, num);
}
/*
* Same as above, but signed.
*/
-
-static int
-matroska_ebmlnum_sint (uint8_t *data,
- uint32_t size,
- int64_t *num)
+static int matroska_ebmlnum_sint(MatroskaDemuxContext *matroska,
+ uint8_t *data, uint32_t size, int64_t *num)
{
uint64_t unum;
int res;
/* read as unsigned number first */
- if ((res = matroska_ebmlnum_uint(data, size, &unum)) < 0)
+ if ((res = matroska_ebmlnum_uint(matroska, data, size, &unum)) < 0)
return res;
/* make signed (weird way) */
- if (unum == (uint64_t)-1)
- *num = INT64_MAX;
- else
- *num = unum - ((1LL << ((7 * res) - 1)) - 1);
+ *num = unum - ((1LL << (7*res - 1)) - 1);
return res;
}
+static int ebml_parse_elem(MatroskaDemuxContext *matroska,
+ EbmlSyntax *syntax, void *data);
-static MatroskaTrack *
-matroska_find_track_by_num (MatroskaDemuxContext *matroska,
- int num)
+static int ebml_parse_id(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
+ uint32_t id, void *data)
{
- MatroskaTrack *tracks = matroska->tracks.elem;
int i;
-
- for (i=0; i < matroska->tracks.nb_elem; i++)
- if (tracks[i].num == num)
- return &tracks[i];
-
- av_log(matroska->ctx, AV_LOG_ERROR, "Invalid track number %d\n", num);
- return NULL;
+ for (i=0; syntax[i].id; i++)
+ if (id == syntax[i].id)
+ break;
+ if (!syntax[i].id && id != EBML_ID_VOID && id != EBML_ID_CRC32)
+ av_log(matroska->ctx, AV_LOG_INFO, "Unknown entry 0x%X\n", id);
+ return ebml_parse_elem(matroska, &syntax[i], data);
}
-
-/*
- * Put one packet in an application-supplied AVPacket struct.
- * Returns 0 on success or -1 on failure.
- */
-
-static int
-matroska_deliver_packet (MatroskaDemuxContext *matroska,
- AVPacket *pkt)
+static int ebml_parse(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
+ void *data)
{
- if (matroska->num_packets > 0) {
- memcpy(pkt, matroska->packets[0], sizeof(AVPacket));
- av_free(matroska->packets[0]);
- if (matroska->num_packets > 1) {
- memmove(&matroska->packets[0], &matroska->packets[1],
- (matroska->num_packets - 1) * sizeof(AVPacket *));
- matroska->packets =
- av_realloc(matroska->packets, (matroska->num_packets - 1) *
- sizeof(AVPacket *));
- } else {
- av_freep(&matroska->packets);
- }
- matroska->num_packets--;
- return 0;
- }
-
- return -1;
+ uint64_t id;
+ int res = ebml_read_num(matroska, matroska->ctx->pb, 4, &id);
+ id |= 1 << 7*res;
+ return res < 0 ? res : ebml_parse_id(matroska, syntax, id, data);
}
-/*
- * Put a packet into our internal queue. Will be delivered to the
- * user/application during the next get_packet() call.
- */
-
-static void
-matroska_queue_packet (MatroskaDemuxContext *matroska,
- AVPacket *pkt)
+static int ebml_parse_nest(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
+ void *data)
{
- matroska->packets =
- av_realloc(matroska->packets, (matroska->num_packets + 1) *
- sizeof(AVPacket *));
- matroska->packets[matroska->num_packets] = pkt;
- matroska->num_packets++;
-}
+ int i, res = 0;
-/*
- * Free all packets in our internal queue.
- */
-static void
-matroska_clear_queue (MatroskaDemuxContext *matroska)
-{
- if (matroska->packets) {
- int n;
- for (n = 0; n < matroska->num_packets; n++) {
- av_free_packet(matroska->packets[n]);
- av_free(matroska->packets[n]);
+ for (i=0; syntax[i].id; i++)
+ switch (syntax[i].type) {
+ case EBML_UINT:
+ *(uint64_t *)((char *)data+syntax[i].data_offset) = syntax[i].def.u;
+ break;
+ case EBML_FLOAT:
+ *(double *)((char *)data+syntax[i].data_offset) = syntax[i].def.f;
+ break;
+ case EBML_STR:
+ case EBML_UTF8:
+ *(char **)((char *)data+syntax[i].data_offset) = av_strdup(syntax[i].def.s);
+ break;
}
- av_free(matroska->packets);
- matroska->packets = NULL;
- matroska->num_packets = 0;
- }
-}
+ while (!res && !ebml_level_end(matroska))
+ res = ebml_parse(matroska, syntax, data);
-/*
- * Autodetecting...
- */
-
-static int
-matroska_probe (AVProbeData *p)
-{
- uint64_t total = 0;
- int len_mask = 0x80, size = 1, n = 1;
- uint8_t probe_data[] = { 'm', 'a', 't', 'r', 'o', 's', 'k', 'a' };
-
- /* ebml header? */
- if (AV_RB32(p->buf) != EBML_ID_HEADER)
- return 0;
-
- /* length of header */
- total = p->buf[4];
- while (size <= 8 && !(total & len_mask)) {
- size++;
- len_mask >>= 1;
- }
- if (size > 8)
- return 0;
- total &= (len_mask - 1);
- while (n < size)
- total = (total << 8) | p->buf[4 + n++];
-
- /* does the probe data contain the whole header? */
- if (p->buf_size < 4 + size + total)
- return 0;
-
- /* the header must contain the document type 'matroska'. For now,
- * we don't parse the whole header but simply check for the
- * availability of that array of characters inside the header.
- * Not fully fool-proof, but good enough. */
- for (n = 4 + size; n <= 4 + size + total - sizeof(probe_data); n++)
- if (!memcmp (&p->buf[n], probe_data, sizeof(probe_data)))
- return AVPROBE_SCORE_MAX;
-
- return 0;
+ return res;
}
-/*
- * From here on, it's all XML-style DTD stuff... Needs no comments.
- */
-
-static int ebml_parse(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
- void *data, uint32_t expected_id, int once);
-
static int ebml_parse_elem(MatroskaDemuxContext *matroska,
EbmlSyntax *syntax, void *data)
{
+ ByteIOContext *pb = matroska->ctx->pb;
uint32_t id = syntax->id;
- EbmlBin *bin;
+ uint64_t length;
int res;
data = (char *)data + syntax->data_offset;
memset(data, 0, syntax->list_elem_size);
list->nb_elem++;
}
- bin = data;
+
+ if (syntax->type != EBML_PASS && syntax->type != EBML_STOP)
+ if ((res = ebml_read_num(matroska, pb, 8, &length)) < 0)
+ return res;
switch (syntax->type) {
- case EBML_UINT: return ebml_read_uint (matroska, &id, data);
- case EBML_FLOAT: return ebml_read_float(matroska, &id, data);
+ case EBML_UINT: res = ebml_read_uint (pb, length, data); break;
+ case EBML_FLOAT: res = ebml_read_float (pb, length, data); break;
case EBML_STR:
- case EBML_UTF8: av_free(*(char **)data);
- return ebml_read_ascii(matroska, &id, data);
- case EBML_BIN: av_free(bin->data);
- bin->pos = url_ftell(matroska->ctx->pb);
- return ebml_read_binary(matroska, &id, &bin->data,
- &bin->size);
- case EBML_NEST: if ((res=ebml_read_master(matroska, &id)) < 0)
+ case EBML_UTF8: res = ebml_read_ascii (pb, length, data); break;
+ case EBML_BIN: res = ebml_read_binary(pb, length, data); break;
+ case EBML_NEST: if ((res=ebml_read_master(matroska, length)) < 0)
return res;
if (id == MATROSKA_ID_SEGMENT)
matroska->segment_start = url_ftell(matroska->ctx->pb);
- return ebml_parse(matroska, syntax->def.n, data, 0, 0);
- case EBML_PASS: return ebml_parse(matroska, syntax->def.n, data, 0, 1);
+ return ebml_parse_nest(matroska, syntax->def.n, data);
+ case EBML_PASS: return ebml_parse_id(matroska, syntax->def.n, id, data);
case EBML_STOP: *(int *)data = 1; return 1;
- default: return ebml_read_skip(matroska);
- }
-}
-
-static int ebml_parse_id(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
- uint32_t id, void *data)
-{
- int i;
- for (i=0; syntax[i].id; i++)
- if (id == syntax[i].id)
- break;
- if (!syntax[i].id)
- av_log(matroska->ctx, AV_LOG_INFO, "Unknown entry 0x%X\n", id);
- return ebml_parse_elem(matroska, &syntax[i], data);
-}
-
-static int ebml_parse(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
- void *data, uint32_t expected_id, int once)
-{
- int i, res = 0;
- uint32_t id = 0;
-
- for (i=0; syntax[i].id; i++)
- switch (syntax[i].type) {
- case EBML_UINT:
- *(uint64_t *)((char *)data+syntax[i].data_offset) = syntax[i].def.u;
- break;
- case EBML_FLOAT:
- *(double *)((char *)data+syntax[i].data_offset) = syntax[i].def.f;
- break;
- case EBML_STR:
- case EBML_UTF8:
- *(char **)((char *)data+syntax[i].data_offset) = av_strdup(syntax[i].def.s);
- break;
- }
-
- if (expected_id) {
- res = ebml_read_master(matroska, &id);
- if (id != expected_id)
- return AVERROR_INVALIDDATA;
- if (id == MATROSKA_ID_SEGMENT)
- matroska->segment_start = url_ftell(matroska->ctx->pb);
+ default: return url_fseek(pb,length,SEEK_CUR)<0 ? AVERROR(EIO) : 0;
}
-
- while (!res) {
- if (!(id = ebml_peek_id(matroska, &matroska->level_up))) {
- res = AVERROR(EIO);
- break;
- } else if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
-
- res = ebml_parse_id(matroska, syntax, id, data);
- if (once)
- break;
-
-
- if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
- }
-
+ if (res == AVERROR_INVALIDDATA)
+ av_log(matroska->ctx, AV_LOG_ERROR, "Invalid element\n");
+ else if (res == AVERROR(EIO))
+ av_log(matroska->ctx, AV_LOG_ERROR, "Read error\n");
return res;
}
}
}
-static int
-matroska_parse_info (MatroskaDemuxContext *matroska)
+
+/*
+ * Autodetecting...
+ */
+static int matroska_probe(AVProbeData *p)
{
- int res = ebml_parse(matroska, matroska_info, matroska, MATROSKA_ID_INFO, 0);
+ uint64_t total = 0;
+ int len_mask = 0x80, size = 1, n = 1;
+ char probe_data[] = "matroska";
- if (matroska->duration)
- matroska->ctx->duration = matroska->duration * matroska->time_scale
- * 1000 / AV_TIME_BASE;
- if (matroska->title)
- strncpy(matroska->ctx->title, matroska->title,
- sizeof(matroska->ctx->title)-1);
+ /* EBML header? */
+ if (AV_RB32(p->buf) != EBML_ID_HEADER)
+ return 0;
- return res;
+ /* length of header */
+ total = p->buf[4];
+ while (size <= 8 && !(total & len_mask)) {
+ size++;
+ len_mask >>= 1;
+ }
+ if (size > 8)
+ return 0;
+ total &= (len_mask - 1);
+ while (n < size)
+ total = (total << 8) | p->buf[4 + n++];
+
+ /* Does the probe data contain the whole header? */
+ if (p->buf_size < 4 + size + total)
+ return 0;
+
+ /* The header must contain the document type 'matroska'. For now,
+ * we don't parse the whole header but simply check for the
+ * availability of that array of characters inside the header.
+ * Not fully fool-proof, but good enough. */
+ for (n = 4+size; n <= 4+size+total-(sizeof(probe_data)-1); n++)
+ if (!memcmp(p->buf+n, probe_data, sizeof(probe_data)-1))
+ return AVPROBE_SCORE_MAX;
+
+ return 0;
}
-static int
-matroska_decode_buffer(uint8_t** buf, int* buf_size, MatroskaTrack *track)
+static MatroskaTrack *matroska_find_track_by_num(MatroskaDemuxContext *matroska,
+ int num)
+{
+ MatroskaTrack *tracks = matroska->tracks.elem;
+ int i;
+
+ for (i=0; i < matroska->tracks.nb_elem; i++)
+ if (tracks[i].num == num)
+ return &tracks[i];
+
+ av_log(matroska->ctx, AV_LOG_ERROR, "Invalid track number %d\n", num);
+ return NULL;
+}
+
+static int matroska_decode_buffer(uint8_t** buf, int* buf_size,
+ MatroskaTrack *track)
{
MatroskaTrackEncoding *encodings = track->encodings.elem;
uint8_t* data = *buf;
break;
}
#endif
+ default:
+ return -1;
}
*buf = pkt_data;
return -1;
}
-static int
-matroska_parse_tracks (MatroskaDemuxContext *matroska)
+static void matroska_convert_tags(AVFormatContext *s, EbmlList *list)
{
- MatroskaTrack *tracks;
- int i, res;
-
- res = ebml_parse(matroska, matroska_tracks, matroska, MATROSKA_ID_TRACKS, 0);
-
- tracks = matroska->tracks.elem;
- for (i=0; i<matroska->tracks.nb_elem; i++) {
- MatroskaTrack *track = &tracks[i];
- EbmlList *encodings_list = &tracks->encodings;
- MatroskaTrackEncoding *encodings = encodings_list->elem;
-
- if (track->type != MATROSKA_TRACK_TYPE_VIDEO &&
- track->type != MATROSKA_TRACK_TYPE_AUDIO &&
- track->type != MATROSKA_TRACK_TYPE_SUBTITLE) {
- av_log(matroska->ctx, AV_LOG_INFO,
- "Unknown or unsupported track type %"PRIu64"\n",
- track->type);
- continue;
- }
+ MatroskaTag *tags = list->elem;
+ int i, j;
- if (track->type == MATROSKA_TRACK_TYPE_VIDEO) {
- if (!track->default_duration)
- track->default_duration = 1000000000/track->video.frame_rate;
- if (!track->video.display_width)
- track->video.display_width = track->video.pixel_width;
- if (!track->video.display_height)
- track->video.display_height = track->video.pixel_height;
- } else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) {
- if (!track->audio.out_samplerate)
- track->audio.out_samplerate = track->audio.samplerate;
- }
- if (encodings_list->nb_elem > 1) {
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Multiple combined encodings no supported");
- } else if (encodings_list->nb_elem == 1) {
- if (encodings[0].type ||
- (encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP &&
-#ifdef CONFIG_ZLIB
- encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_ZLIB &&
-#endif
-#ifdef CONFIG_BZLIB
- encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_BZLIB &&
-#endif
- encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_LZO)) {
- encodings[0].scope = 0;
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Unsupported encoding type");
- } else if (track->codec_priv.size && encodings[0].scope&2) {
- uint8_t *codec_priv = track->codec_priv.data;
- int offset = matroska_decode_buffer(&track->codec_priv.data,
- &track->codec_priv.size,
- track);
- if (offset < 0) {
- track->codec_priv.data = NULL;
- track->codec_priv.size = 0;
- av_log(matroska->ctx, AV_LOG_ERROR,
- "Failed to decode codec private data\n");
- } else if (offset > 0) {
- track->codec_priv.data = av_malloc(track->codec_priv.size + offset);
- memcpy(track->codec_priv.data,
- encodings[0].compression.settings.data, offset);
- memcpy(track->codec_priv.data+offset, codec_priv,
- track->codec_priv.size);
- track->codec_priv.size += offset;
- }
- if (codec_priv != track->codec_priv.data)
- av_free(codec_priv);
+ for (i=0; i < list->nb_elem; i++) {
+ for (j=0; j < ARRAY_SIZE(metadata); j++){
+ if (!strcmp(tags[i].name, metadata[j].name)) {
+ int *ptr = (int *)((char *)s + metadata[j].offset);
+ if (*ptr) continue;
+ if (metadata[j].size > sizeof(int))
+ av_strlcpy((char *)ptr, tags[i].string, metadata[j].size);
+ else
+ *ptr = atoi(tags[i].string);
}
}
+ if (tags[i].sub.nb_elem)
+ matroska_convert_tags(s, &tags[i].sub);
}
-
- return res;
-}
-
-static int
-matroska_parse_index (MatroskaDemuxContext *matroska)
-{
- return ebml_parse(matroska, matroska_index, matroska, MATROSKA_ID_CUES, 0);
-}
-
-static int
-matroska_parse_metadata (MatroskaDemuxContext *matroska)
-{
- return ebml_parse(matroska, matroska_tags, matroska, MATROSKA_ID_TAGS, 0);
-}
-
-static int
-matroska_parse_seekhead (MatroskaDemuxContext *matroska)
-{
- return ebml_parse(matroska, matroska_seekhead, matroska, MATROSKA_ID_SEEKHEAD, 0);
}
-static void
-matroska_execute_seekhead(MatroskaDemuxContext *matroska)
+static void matroska_execute_seekhead(MatroskaDemuxContext *matroska)
{
EbmlList *seekhead_list = &matroska->seekhead;
MatroskaSeekhead *seekhead = seekhead_list->elem;
- uint32_t peek_id_cache = matroska->peek_id;
uint32_t level_up = matroska->level_up;
offset_t before_pos = url_ftell(matroska->ctx->pb);
MatroskaLevel level;
- uint32_t id;
- int i, res;
+ int i;
for (i=0; i<seekhead_list->nb_elem; i++) {
+ offset_t offset = seekhead[i].pos + matroska->segment_start;
+
if (seekhead[i].pos <= before_pos
|| seekhead[i].id == MATROSKA_ID_SEEKHEAD
|| seekhead[i].id == MATROSKA_ID_CLUSTER)
continue;
/* seek */
- if (ebml_read_seek(matroska,
- seekhead[i].pos+matroska->segment_start) < 0)
+ if (url_fseek(matroska->ctx->pb, offset, SEEK_SET) != offset)
continue;
- /* we don't want to lose our seekhead level, so we add
+ /* We don't want to lose our seekhead level, so we add
* a dummy. This is a crude hack. */
if (matroska->num_levels == EBML_MAX_DEPTH) {
av_log(matroska->ctx, AV_LOG_INFO,
matroska->levels[matroska->num_levels] = level;
matroska->num_levels++;
- /* check ID */
- if (!(id = ebml_peek_id (matroska,
- &matroska->level_up)))
- goto finish;
- if (id != seekhead[i].id) {
- av_log(matroska->ctx, AV_LOG_INFO,
- "We looked for ID=0x%x but got "
- "ID=0x%x (pos=%"PRIu64")",
- (int)seekhead[i].id, id, seekhead[i].pos +
- matroska->segment_start);
- goto finish;
- }
+ ebml_parse(matroska, matroska_segment, matroska);
- /* read master + parse */
- switch (id) {
- case MATROSKA_ID_CUES:
- if (!(res = matroska_parse_index(matroska)) ||
- url_feof(matroska->ctx->pb)) {
- matroska->index_parsed = 1;
- res = 0;
- }
- break;
- case MATROSKA_ID_TAGS:
- if (!(res = matroska_parse_metadata(matroska)) ||
- url_feof(matroska->ctx->pb)) {
- matroska->metadata_parsed = 1;
- res = 0;
- }
- break;
- }
-
- finish:
/* remove dummy level */
while (matroska->num_levels) {
uint64_t length = matroska->levels[--matroska->num_levels].length;
}
/* seek back */
- ebml_read_seek(matroska, before_pos);
- matroska->peek_id = peek_id_cache;
+ url_fseek(matroska->ctx->pb, before_pos, SEEK_SET);
matroska->level_up = level_up;
}
-static int
-matroska_parse_attachments(AVFormatContext *s)
+static int matroska_aac_profile(char *codec_id)
{
- MatroskaDemuxContext *matroska = s->priv_data;
- EbmlList *attachements_list = &matroska->attachments;
- MatroskaAttachement *attachements;
- int i, j, res;
-
- res = ebml_parse(matroska, matroska_attachments, matroska, MATROSKA_ID_ATTACHMENTS, 0);
-
- attachements = attachements_list->elem;
- for (j=0; j<attachements_list->nb_elem; j++) {
- if (!(attachements[j].filename && attachements[j].mime &&
- attachements[j].bin.data && attachements[j].bin.size > 0)) {
- av_log(matroska->ctx, AV_LOG_ERROR, "incomplete attachment\n");
- } else {
- AVStream *st = av_new_stream(s, matroska->num_streams++);
- if (st == NULL)
- break;
- st->filename = av_strdup(attachements[j].filename);
- st->codec->codec_id = CODEC_ID_NONE;
- st->codec->codec_type = CODEC_TYPE_ATTACHMENT;
- st->codec->extradata = av_malloc(attachements[j].bin.size);
- if(st->codec->extradata == NULL)
- break;
- st->codec->extradata_size = attachements[j].bin.size;
- memcpy(st->codec->extradata, attachements[j].bin.data, attachements[j].bin.size);
-
- for (i=0; ff_mkv_mime_tags[i].id != CODEC_ID_NONE; i++) {
- if (!strncmp(ff_mkv_mime_tags[i].str, attachements[j].mime,
- strlen(ff_mkv_mime_tags[i].str))) {
- st->codec->codec_id = ff_mkv_mime_tags[i].id;
- break;
- }
- }
- }
- }
-
- return res;
-}
-
-static int
-matroska_parse_chapters(AVFormatContext *s)
-{
- MatroskaDemuxContext *matroska = s->priv_data;
- EbmlList *chapters_list = &matroska->chapters;
- MatroskaChapter *chapters;
- int i, res;
-
- res = ebml_parse(matroska, matroska_chapters, matroska, MATROSKA_ID_CHAPTERS, 0);
-
- chapters = chapters_list->elem;
- for (i=0; i<chapters_list->nb_elem; i++)
- if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid)
- ff_new_chapter(s, chapters[i].uid, (AVRational){1, 1000000000},
- chapters[i].start, chapters[i].end,
- chapters[i].title);
-
- return res;
-}
-
-static int
-matroska_aac_profile (char *codec_id)
-{
- static const char *aac_profiles[] = {
- "MAIN", "LC", "SSR"
- };
+ static const char *aac_profiles[] = { "MAIN", "LC", "SSR" };
int profile;
for (profile=0; profile<ARRAY_SIZE(aac_profiles); profile++)
return profile + 1;
}
-static int
-matroska_aac_sri (int samplerate)
+static int matroska_aac_sri(int samplerate)
{
int sri;
return sri;
}
-static int
-matroska_read_header (AVFormatContext *s,
- AVFormatParameters *ap)
+static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
MatroskaDemuxContext *matroska = s->priv_data;
+ EbmlList *attachements_list = &matroska->attachments;
+ MatroskaAttachement *attachements;
+ EbmlList *chapters_list = &matroska->chapters;
+ MatroskaChapter *chapters;
MatroskaTrack *tracks;
EbmlList *index_list;
MatroskaIndex *index;
- int i, j, last_level, res = 0;
Ebml ebml = { 0 };
AVStream *st;
- uint32_t id;
+ int i, j;
matroska->ctx = s;
/* First read the EBML header. */
- if (ebml_parse(matroska, ebml_syntax, &ebml, 0, 1)
+ if (ebml_parse(matroska, ebml_syntax, &ebml)
|| ebml.version > EBML_VERSION || ebml.max_size > sizeof(uint64_t)
- || ebml.id_length > sizeof(uint32_t) || strcmp(ebml.doctype, "matroska")
- || ebml.doctype_version > 2) {
- av_log(matroska->ctx, AV_LOG_ERROR,
- "EBML header using unsupported features\n"
- "(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n",
- ebml.version, ebml.doctype, ebml.doctype_version);
- return AVERROR_NOFMT;
- }
- ebml_free(ebml_syntax, &ebml);
-
- /* The next thing is a segment. */
- while (1) {
- if (!(id = ebml_peek_id(matroska, &last_level)))
- return AVERROR(EIO);
- if (id == MATROSKA_ID_SEGMENT)
- break;
-
- /* oi! */
- av_log(matroska->ctx, AV_LOG_INFO,
- "Expected a Segment ID (0x%x), but received 0x%x!\n",
- MATROSKA_ID_SEGMENT, id);
- if ((res = ebml_read_skip(matroska)) < 0)
- return res;
- }
-
- /* We now have a Matroska segment.
- * Seeks are from the beginning of the segment,
- * after the segment ID/length. */
- if ((res = ebml_read_master(matroska, &id)) < 0)
- return res;
- matroska->segment_start = url_ftell(s->pb);
-
- matroska->time_scale = 1000000;
- /* we've found our segment, start reading the different contents in here */
- while (res == 0) {
- if (!(id = ebml_peek_id(matroska, &matroska->level_up))) {
- res = AVERROR(EIO);
- break;
- } else if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
-
- switch (id) {
- /* stream info */
- case MATROSKA_ID_INFO: {
- res = matroska_parse_info(matroska);
- break;
- }
-
- /* track info headers */
- case MATROSKA_ID_TRACKS: {
- res = matroska_parse_tracks(matroska);
- break;
- }
-
- /* stream index */
- case MATROSKA_ID_CUES: {
- if (!matroska->index_parsed) {
- res = matroska_parse_index(matroska);
- } else
- res = ebml_read_skip(matroska);
- break;
- }
-
- /* metadata */
- case MATROSKA_ID_TAGS: {
- if (!matroska->metadata_parsed) {
- res = matroska_parse_metadata(matroska);
- } else
- res = ebml_read_skip(matroska);
- break;
- }
-
- /* file index (if seekable, seek to Cues/Tags to parse it) */
- case MATROSKA_ID_SEEKHEAD: {
- res = matroska_parse_seekhead(matroska);
- break;
- }
-
- case MATROSKA_ID_ATTACHMENTS: {
- res = matroska_parse_attachments(s);
- break;
- }
-
- case MATROSKA_ID_CLUSTER: {
- /* Do not read the master - this will be done in the next
- * call to matroska_read_packet. */
- res = 1;
- break;
- }
-
- case MATROSKA_ID_CHAPTERS: {
- res = matroska_parse_chapters(s);
- break;
- }
-
- default:
- av_log(matroska->ctx, AV_LOG_INFO,
- "Unknown matroska file header ID 0x%x\n", id);
- /* fall-through */
-
- case EBML_ID_VOID:
- res = ebml_read_skip(matroska);
- break;
- }
-
- if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
+ || ebml.id_length > sizeof(uint32_t) || strcmp(ebml.doctype, "matroska")
+ || ebml.doctype_version > 2) {
+ av_log(matroska->ctx, AV_LOG_ERROR,
+ "EBML header using unsupported features\n"
+ "(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n",
+ ebml.version, ebml.doctype, ebml.doctype_version);
+ return AVERROR_NOFMT;
}
- matroska_execute_seekhead(matroska);
+ ebml_free(ebml_syntax, &ebml);
- /* Have we found a cluster? */
- if (ebml_peek_id(matroska, NULL) != MATROSKA_ID_CLUSTER)
+ /* The next thing is a segment. */
+ if (ebml_parse(matroska, matroska_segments, matroska) < 0)
return -1;
+ matroska_execute_seekhead(matroska);
+
+ if (matroska->duration)
+ matroska->ctx->duration = matroska->duration * matroska->time_scale
+ * 1000 / AV_TIME_BASE;
+ if (matroska->title)
+ strncpy(matroska->ctx->title, matroska->title,
+ sizeof(matroska->ctx->title)-1);
+ matroska_convert_tags(s, &matroska->tags);
tracks = matroska->tracks.elem;
for (i=0; i < matroska->tracks.nb_elem; i++) {
MatroskaTrack *track = &tracks[i];
enum CodecID codec_id = CODEC_ID_NONE;
+ EbmlList *encodings_list = &tracks->encodings;
+ MatroskaTrackEncoding *encodings = encodings_list->elem;
uint8_t *extradata = NULL;
int extradata_size = 0;
int extradata_offset = 0;
/* Apply some sanity checks. */
+ if (track->type != MATROSKA_TRACK_TYPE_VIDEO &&
+ track->type != MATROSKA_TRACK_TYPE_AUDIO &&
+ track->type != MATROSKA_TRACK_TYPE_SUBTITLE) {
+ av_log(matroska->ctx, AV_LOG_INFO,
+ "Unknown or unsupported track type %"PRIu64"\n",
+ track->type);
+ continue;
+ }
if (track->codec_id == NULL)
continue;
+ if (track->type == MATROSKA_TRACK_TYPE_VIDEO) {
+ if (!track->default_duration)
+ track->default_duration = 1000000000/track->video.frame_rate;
+ if (!track->video.display_width)
+ track->video.display_width = track->video.pixel_width;
+ if (!track->video.display_height)
+ track->video.display_height = track->video.pixel_height;
+ } else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) {
+ if (!track->audio.out_samplerate)
+ track->audio.out_samplerate = track->audio.samplerate;
+ }
+ if (encodings_list->nb_elem > 1) {
+ av_log(matroska->ctx, AV_LOG_ERROR,
+ "Multiple combined encodings no supported");
+ } else if (encodings_list->nb_elem == 1) {
+ if (encodings[0].type ||
+ (encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP &&
+#ifdef CONFIG_ZLIB
+ encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_ZLIB &&
+#endif
+#ifdef CONFIG_BZLIB
+ encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_BZLIB &&
+#endif
+ encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_LZO)) {
+ encodings[0].scope = 0;
+ av_log(matroska->ctx, AV_LOG_ERROR,
+ "Unsupported encoding type");
+ } else if (track->codec_priv.size && encodings[0].scope&2) {
+ uint8_t *codec_priv = track->codec_priv.data;
+ int offset = matroska_decode_buffer(&track->codec_priv.data,
+ &track->codec_priv.size,
+ track);
+ if (offset < 0) {
+ track->codec_priv.data = NULL;
+ track->codec_priv.size = 0;
+ av_log(matroska->ctx, AV_LOG_ERROR,
+ "Failed to decode codec private data\n");
+ } else if (offset > 0) {
+ track->codec_priv.data = av_malloc(track->codec_priv.size + offset);
+ memcpy(track->codec_priv.data,
+ encodings[0].compression.settings.data, offset);
+ memcpy(track->codec_priv.data+offset, codec_priv,
+ track->codec_priv.size);
+ track->codec_priv.size += offset;
+ }
+ if (codec_priv != track->codec_priv.data)
+ av_free(codec_priv);
+ }
+ }
+
for(j=0; ff_mkv_codec_tags[j].id != CODEC_ID_NONE; j++){
if(!strncmp(ff_mkv_codec_tags[j].str, track->codec_id,
strlen(ff_mkv_codec_tags[j].str))){
}
}
- st = track->stream = av_new_stream(s, matroska->num_streams++);
+ st = track->stream = av_new_stream(s, 0);
if (st == NULL)
return AVERROR(ENOMEM);
- /* Set the FourCC from the CodecID. */
- /* This is the MS compatibility mode which stores a
- * BITMAPINFOHEADER in the CodecPrivate. */
- if (!strcmp(track->codec_id,
- MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC) &&
- (track->codec_priv.size >= 40) &&
- (track->codec_priv.data != NULL)) {
- /* Offset of biCompression. Stored in LE. */
+ if (!strcmp(track->codec_id, "V_MS/VFW/FOURCC")
+ && track->codec_priv.size >= 40
+ && track->codec_priv.data != NULL) {
track->video.fourcc = AV_RL32(track->codec_priv.data + 16);
codec_id = codec_get_id(codec_bmp_tags, track->video.fourcc);
-
- }
-
- /* This is the MS compatibility mode which stores a
- * WAVEFORMATEX in the CodecPrivate. */
- else if (!strcmp(track->codec_id,
- MATROSKA_CODEC_ID_AUDIO_ACM) &&
- (track->codec_priv.size >= 18) &&
- (track->codec_priv.data != NULL)) {
- /* Offset of wFormatTag. Stored in LE. */
+ } else if (!strcmp(track->codec_id, "A_MS/ACM")
+ && track->codec_priv.size >= 18
+ && track->codec_priv.data != NULL) {
uint16_t tag = AV_RL16(track->codec_priv.data);
codec_id = codec_get_id(codec_wav_tags, tag);
-
- }
-
- else if (!strcmp(track->codec_id, "V_QUICKTIME") &&
- (track->codec_priv.size >= 86) &&
- (track->codec_priv.data != NULL)) {
+ } else if (!strcmp(track->codec_id, "V_QUICKTIME")
+ && (track->codec_priv.size >= 86)
+ && (track->codec_priv.data != NULL)) {
track->video.fourcc = AV_RL32(track->codec_priv.data);
codec_id=codec_get_id(codec_movvideo_tags, track->video.fourcc);
- }
-
- else if (codec_id == CODEC_ID_AAC && !track->codec_priv.size) {
+ } else if (codec_id == CODEC_ID_PCM_S16BE) {
+ switch (track->audio.bitdepth) {
+ case 8: codec_id = CODEC_ID_PCM_U8; break;
+ case 24: codec_id = CODEC_ID_PCM_S24BE; break;
+ case 32: codec_id = CODEC_ID_PCM_S32BE; break;
+ }
+ } else if (codec_id == CODEC_ID_PCM_S16LE) {
+ switch (track->audio.bitdepth) {
+ case 8: codec_id = CODEC_ID_PCM_U8; break;
+ case 24: codec_id = CODEC_ID_PCM_S24LE; break;
+ case 32: codec_id = CODEC_ID_PCM_S32LE; break;
+ }
+ } else if (codec_id==CODEC_ID_PCM_F32LE && track->audio.bitdepth==64) {
+ codec_id = CODEC_ID_PCM_F64LE;
+ } else if (codec_id == CODEC_ID_AAC && !track->codec_priv.size) {
int profile = matroska_aac_profile(track->codec_id);
int sri = matroska_aac_sri(track->audio.samplerate);
extradata = av_malloc(5);
extradata[3] = 0xE5;
extradata[4] = 0x80 | (sri<<3);
extradata_size = 5;
- } else {
+ } else
extradata_size = 2;
- }
- }
-
- else if (codec_id == CODEC_ID_TTA) {
+ } else if (codec_id == CODEC_ID_TTA) {
ByteIOContext b;
extradata_size = 30;
extradata = av_mallocz(extradata_size);
put_le16(&b, track->audio.bitdepth);
put_le32(&b, track->audio.out_samplerate);
put_le32(&b, matroska->ctx->duration * track->audio.out_samplerate);
- }
-
- else if (codec_id == CODEC_ID_RV10 || codec_id == CODEC_ID_RV20 ||
- codec_id == CODEC_ID_RV30 || codec_id == CODEC_ID_RV40) {
+ } else if (codec_id == CODEC_ID_RV10 || codec_id == CODEC_ID_RV20 ||
+ codec_id == CODEC_ID_RV30 || codec_id == CODEC_ID_RV40) {
extradata_offset = 26;
track->codec_priv.size -= extradata_offset;
- }
-
- else if (codec_id == CODEC_ID_RA_144) {
+ } else if (codec_id == CODEC_ID_RA_144) {
track->audio.out_samplerate = 8000;
track->audio.channels = 1;
- }
-
- else if (codec_id == CODEC_ID_RA_288 ||
- codec_id == CODEC_ID_COOK ||
- codec_id == CODEC_ID_ATRAC3) {
+ } else if (codec_id == CODEC_ID_RA_288 || codec_id == CODEC_ID_COOK ||
+ codec_id == CODEC_ID_ATRAC3) {
ByteIOContext b;
init_put_byte(&b, track->codec_priv.data,track->codec_priv.size,
}
}
- if (codec_id == CODEC_ID_NONE) {
+ if (codec_id == CODEC_ID_NONE)
av_log(matroska->ctx, AV_LOG_INFO,
- "Unknown/unsupported CodecID %s.\n",
- track->codec_id);
- }
+ "Unknown/unsupported CodecID %s.\n", track->codec_id);
av_set_pts_info(st, 64, matroska->time_scale*track->time_scale, 1000*1000*1000); /* 64 bit pts in ns */
} else if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE) {
st->codec->codec_type = CODEC_TYPE_SUBTITLE;
}
+ }
+
+ attachements = attachements_list->elem;
+ for (j=0; j<attachements_list->nb_elem; j++) {
+ if (!(attachements[j].filename && attachements[j].mime &&
+ attachements[j].bin.data && attachements[j].bin.size > 0)) {
+ av_log(matroska->ctx, AV_LOG_ERROR, "incomplete attachment\n");
+ } else {
+ AVStream *st = av_new_stream(s, 0);
+ if (st == NULL)
+ break;
+ st->filename = av_strdup(attachements[j].filename);
+ st->codec->codec_id = CODEC_ID_NONE;
+ st->codec->codec_type = CODEC_TYPE_ATTACHMENT;
+ st->codec->extradata = av_malloc(attachements[j].bin.size);
+ if(st->codec->extradata == NULL)
+ break;
+ st->codec->extradata_size = attachements[j].bin.size;
+ memcpy(st->codec->extradata, attachements[j].bin.data, attachements[j].bin.size);
- /* What do we do with private data? E.g. for Vorbis. */
+ for (i=0; ff_mkv_mime_tags[i].id != CODEC_ID_NONE; i++) {
+ if (!strncmp(ff_mkv_mime_tags[i].str, attachements[j].mime,
+ strlen(ff_mkv_mime_tags[i].str))) {
+ st->codec->codec_id = ff_mkv_mime_tags[i].id;
+ break;
+ }
+ }
+ }
}
- res = 0;
+
+ chapters = chapters_list->elem;
+ for (i=0; i<chapters_list->nb_elem; i++)
+ if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid)
+ ff_new_chapter(s, chapters[i].uid, (AVRational){1, 1000000000},
+ chapters[i].start, chapters[i].end,
+ chapters[i].title);
index_list = &matroska->index;
index = index_list->elem;
}
}
- return res;
+ return 0;
+}
+
+/*
+ * Put one packet in an application-supplied AVPacket struct.
+ * Returns 0 on success or -1 on failure.
+ */
+static int matroska_deliver_packet(MatroskaDemuxContext *matroska,
+ AVPacket *pkt)
+{
+ if (matroska->num_packets > 0) {
+ memcpy(pkt, matroska->packets[0], sizeof(AVPacket));
+ av_free(matroska->packets[0]);
+ if (matroska->num_packets > 1) {
+ memmove(&matroska->packets[0], &matroska->packets[1],
+ (matroska->num_packets - 1) * sizeof(AVPacket *));
+ matroska->packets =
+ av_realloc(matroska->packets, (matroska->num_packets - 1) *
+ sizeof(AVPacket *));
+ } else {
+ av_freep(&matroska->packets);
+ }
+ matroska->num_packets--;
+ return 0;
+ }
+
+ return -1;
+}
+
+/*
+ * Free all packets in our internal queue.
+ */
+static void matroska_clear_queue(MatroskaDemuxContext *matroska)
+{
+ if (matroska->packets) {
+ int n;
+ for (n = 0; n < matroska->num_packets; n++) {
+ av_free_packet(matroska->packets[n]);
+ av_free(matroska->packets[n]);
+ }
+ av_freep(&matroska->packets);
+ matroska->num_packets = 0;
+ }
}
-static int
-matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, int size,
- int64_t pos, uint64_t cluster_time, uint64_t duration,
- int is_keyframe)
+static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data,
+ int size, int64_t pos, uint64_t cluster_time,
+ uint64_t duration, int is_keyframe)
{
MatroskaTrack *track;
int res = 0;
AVStream *st;
AVPacket *pkt;
- uint8_t *origdata = data;
int16_t block_time;
uint32_t *lace_size = NULL;
int n, flags, laces = 0;
uint64_t num;
- /* first byte(s): tracknum */
- if ((n = matroska_ebmlnum_uint(data, size, &num)) < 0) {
+ if ((n = matroska_ebmlnum_uint(matroska, data, size, &num)) < 0) {
av_log(matroska->ctx, AV_LOG_ERROR, "EBML block data error\n");
- av_free(origdata);
return res;
}
data += n;
size -= n;
- /* fetch track from num */
track = matroska_find_track_by_num(matroska, num);
if (size <= 3 || !track || !track->stream) {
av_log(matroska->ctx, AV_LOG_INFO,
"Invalid stream %"PRIu64" or size %u\n", num, size);
- av_free(origdata);
return res;
}
st = track->stream;
- if (st->discard >= AVDISCARD_ALL) {
- av_free(origdata);
+ if (st->discard >= AVDISCARD_ALL)
return res;
- }
if (duration == AV_NOPTS_VALUE)
duration = track->default_duration / matroska->time_scale;
- /* block_time (relative to cluster time) */
block_time = AV_RB16(data);
data += 2;
flags = *data++;
is_keyframe = flags & 0x80 ? PKT_FLAG_KEY : 0;
if (matroska->skip_to_keyframe) {
- if (!is_keyframe || st != matroska->skip_to_stream) {
- av_free(origdata);
+ if (!is_keyframe || st != matroska->skip_to_stream)
return res;
- }
matroska->skip_to_keyframe = 0;
}
lace_size[0] = size;
break;
- case 0x1: /* xiph lacing */
+ case 0x1: /* Xiph lacing */
case 0x2: /* fixed-size lacing */
case 0x3: /* EBML lacing */
assert(size>0); // size <=3 is checked before size-=3 above
lace_size = av_mallocz(laces * sizeof(int));
switch ((flags & 0x06) >> 1) {
- case 0x1: /* xiph lacing */ {
+ case 0x1: /* Xiph lacing */ {
uint8_t temp;
uint32_t total = 0;
for (n = 0; res == 0 && n < laces - 1; n++) {
case 0x3: /* EBML lacing */ {
uint32_t total;
- n = matroska_ebmlnum_uint(data, size, &num);
+ n = matroska_ebmlnum_uint(matroska, data, size, &num);
if (n < 0) {
av_log(matroska->ctx, AV_LOG_INFO,
"EBML block data error\n");
for (n = 1; res == 0 && n < laces - 1; n++) {
int64_t snum;
int r;
- r = matroska_ebmlnum_sint (data, size, &snum);
+ r = matroska_ebmlnum_sint(matroska, data, size, &snum);
if (r < 0) {
av_log(matroska->ctx, AV_LOG_INFO,
"EBML block data error\n");
+ a * (h*w / a - track->audio.pkt_cnt--), a);
pkt->pos = pos;
pkt->stream_index = st->index;
- matroska_queue_packet(matroska, pkt);
+ dynarray_add(&matroska->packets,&matroska->num_packets,pkt);
}
} else {
MatroskaTrackEncoding *encodings = track->encodings.elem;
uint8_t *pkt_data = data;
if (encodings && encodings->scope & 1) {
- offset = matroska_decode_buffer(&pkt_data, &pkt_size,
- track);
+ offset = matroska_decode_buffer(&pkt_data,&pkt_size, track);
if (offset < 0)
continue;
}
pkt->pos = pos;
pkt->duration = duration;
- matroska_queue_packet(matroska, pkt);
+ dynarray_add(&matroska->packets, &matroska->num_packets, pkt);
}
if (timecode != AV_NOPTS_VALUE)
}
av_free(lace_size);
- av_free(origdata);
- return res;
-}
-
-static int
-matroska_parse_blockgroup (MatroskaDemuxContext *matroska,
- uint64_t cluster_time)
-{
- int res = 0;
- uint32_t id;
- int is_keyframe = PKT_FLAG_KEY, last_num_packets = matroska->num_packets;
- uint64_t duration = AV_NOPTS_VALUE;
- uint8_t *data;
- int size = 0;
- int64_t pos = 0;
-
- av_log(matroska->ctx, AV_LOG_DEBUG, "parsing blockgroup...\n");
-
- while (res == 0) {
- if (!(id = ebml_peek_id(matroska, &matroska->level_up))) {
- res = AVERROR(EIO);
- break;
- } else if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
-
- switch (id) {
- /* one block inside the group. Note, block parsing is one
- * of the harder things, so this code is a bit complicated.
- * See http://www.matroska.org/ for documentation. */
- case MATROSKA_ID_BLOCK: {
- pos = url_ftell(matroska->ctx->pb);
- res = ebml_read_binary(matroska, &id, &data, &size);
- break;
- }
-
- case MATROSKA_ID_BLOCKDURATION: {
- if ((res = ebml_read_uint(matroska, &id, &duration)) < 0)
- break;
- break;
- }
-
- case MATROSKA_ID_BLOCKREFERENCE: {
- int64_t num;
- /* We've found a reference, so not even the first frame in
- * the lace is a key frame. */
- is_keyframe = 0;
- if (last_num_packets != matroska->num_packets)
- matroska->packets[last_num_packets]->flags = 0;
- if ((res = ebml_read_sint(matroska, &id, &num)) < 0)
- break;
- break;
- }
-
- default:
- av_log(matroska->ctx, AV_LOG_INFO,
- "Unknown entry 0x%x in blockgroup data\n", id);
- /* fall-through */
-
- case EBML_ID_VOID:
- res = ebml_read_skip(matroska);
- break;
- }
-
- if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
- }
-
- if (res)
- return res;
-
- if (size > 0)
- res = matroska_parse_block(matroska, data, size, pos, cluster_time,
- duration, is_keyframe);
-
return res;
}
-static int
-matroska_parse_cluster (MatroskaDemuxContext *matroska)
+static int matroska_parse_cluster(MatroskaDemuxContext *matroska)
{
- int res = 0;
- uint32_t id;
- uint64_t cluster_time = 0;
- uint8_t *data;
- int64_t pos;
- int size;
-
- av_log(matroska->ctx, AV_LOG_DEBUG,
- "parsing cluster at %"PRId64"\n", url_ftell(matroska->ctx->pb));
-
- while (res == 0) {
- if (!(id = ebml_peek_id(matroska, &matroska->level_up))) {
- res = AVERROR(EIO);
- break;
- } else if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
-
- switch (id) {
- /* cluster timecode */
- case MATROSKA_ID_CLUSTERTIMECODE: {
- uint64_t num;
- if ((res = ebml_read_uint(matroska, &id, &num)) < 0)
- break;
- cluster_time = num;
- break;
- }
-
- /* a group of blocks inside a cluster */
- case MATROSKA_ID_BLOCKGROUP:
- if ((res = ebml_read_master(matroska, &id)) < 0)
- break;
- res = matroska_parse_blockgroup(matroska, cluster_time);
- break;
-
- case MATROSKA_ID_SIMPLEBLOCK:
- pos = url_ftell(matroska->ctx->pb);
- res = ebml_read_binary(matroska, &id, &data, &size);
- if (res == 0)
- res = matroska_parse_block(matroska, data, size, pos,
- cluster_time, AV_NOPTS_VALUE,
- -1);
- break;
-
- default:
- av_log(matroska->ctx, AV_LOG_INFO,
- "Unknown entry 0x%x in cluster data\n", id);
- /* fall-through */
-
- case EBML_ID_VOID:
- res = ebml_read_skip(matroska);
- break;
- }
-
- if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
- }
-
+ MatroskaCluster cluster = { 0 };
+ EbmlList *blocks_list;
+ MatroskaBlock *blocks;
+ int i, res;
+ if (matroska->has_cluster_id){
+ /* For the first cluster we parse, its ID was already read as
+ part of matroska_read_header(), so don't read it again */
+ res = ebml_parse_id(matroska, matroska_clusters,
+ MATROSKA_ID_CLUSTER, &cluster);
+ matroska->has_cluster_id = 0;
+ } else
+ res = ebml_parse(matroska, matroska_clusters, &cluster);
+ blocks_list = &cluster.blocks;
+ blocks = blocks_list->elem;
+ for (i=0; i<blocks_list->nb_elem; i++)
+ if (blocks[i].bin.size > 0)
+ res=matroska_parse_block(matroska,
+ blocks[i].bin.data, blocks[i].bin.size,
+ blocks[i].bin.pos, cluster.timecode,
+ blocks[i].duration, !blocks[i].reference);
+ ebml_free(matroska_cluster, &cluster);
return res;
}
-static int
-matroska_read_packet (AVFormatContext *s,
- AVPacket *pkt)
+static int matroska_read_packet(AVFormatContext *s, AVPacket *pkt)
{
MatroskaDemuxContext *matroska = s->priv_data;
- int res;
- uint32_t id;
- /* Read stream until we have a packet queued. */
while (matroska_deliver_packet(matroska, pkt)) {
-
- /* Have we already reached the end? */
if (matroska->done)
return AVERROR(EIO);
-
- res = 0;
- while (res == 0) {
- if (!(id = ebml_peek_id(matroska, &matroska->level_up))) {
- return AVERROR(EIO);
- } else if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
-
- switch (id) {
- case MATROSKA_ID_CLUSTER:
- if ((res = ebml_read_master(matroska, &id)) < 0)
- break;
- if ((res = matroska_parse_cluster(matroska)) == 0)
- res = 1; /* Parsed one cluster, let's get out. */
- break;
-
- default:
- case EBML_ID_VOID:
- res = ebml_read_skip(matroska);
- break;
- }
-
- if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
- }
-
- if (res == -1)
+ if (matroska_parse_cluster(matroska) < 0)
matroska->done = 1;
}
return 0;
}
-static int
-matroska_read_seek (AVFormatContext *s, int stream_index, int64_t timestamp,
- int flags)
+static int matroska_read_seek(AVFormatContext *s, int stream_index,
+ int64_t timestamp, int flags)
{
MatroskaDemuxContext *matroska = s->priv_data;
AVStream *st = s->streams[stream_index];
int index;
- /* find index entry */
index = av_index_search_timestamp(st, timestamp, flags);
if (index < 0)
return 0;
matroska_clear_queue(matroska);
- /* do the seek */
url_fseek(s->pb, st->index_entries[index].pos, SEEK_SET);
matroska->skip_to_keyframe = !(flags & AVSEEK_FLAG_ANY);
matroska->skip_to_stream = st;
- matroska->peek_id = 0;
av_update_cur_dts(s, st, st->index_entries[index].timestamp);
return 0;
}
-static int
-matroska_read_close (AVFormatContext *s)
+static int matroska_read_close(AVFormatContext *s)
{
MatroskaDemuxContext *matroska = s->priv_data;
MatroskaTrack *tracks = matroska->tracks.elem;
- int n = 0;
+ int n;
matroska_clear_queue(matroska);
for (n=0; n < matroska->tracks.nb_elem; n++)
if (tracks[n].type == MATROSKA_TRACK_TYPE_AUDIO)
av_free(tracks[n].audio.buf);
- ebml_free(matroska_tracks, matroska);
- ebml_free(matroska_index, matroska);
+ ebml_free(matroska_segment, matroska);
return 0;
}
projects / ffmpeg / blobdiff