Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85'
[ffmpeg.git] / libavformat / wtv.c
index 57d239e..d85c3cf 100644 (file)
 /*
- * Windows Television (WTV) demuxer
+ * Windows Television (WTV)
  * Copyright (c) 2010-2011 Peter Ross <pross@xvid.org>
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-/**
- * @file
- * Windows Television (WTV) demuxer
- * @author Peter Ross <pross@xvid.org>
- */
-
-#include "libavutil/intreadwrite.h"
-#include "libavutil/intfloat.h"
-#include "libavutil/dict.h"
-#include "avformat.h"
-#include "internal.h"
-#include "riff.h"
-#include "asf.h"
-#include "mpegts.h"
-
-/* Macros for formating GUIDs */
-#define PRI_GUID \
-    "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
-#define ARG_GUID(g) \
-    g[0],g[1],g[2],g[3],g[4],g[5],g[6],g[7],g[8],g[9],g[10],g[11],g[12],g[13],g[14],g[15]
-
-#define PRI_PRETTY_GUID \
-    "%08x-%04x-%04x-%02x%02x%02x%02x%02x%02x%02x%02x"
-#define ARG_PRETTY_GUID(g) \
-    AV_RL32(g),AV_RL16(g+4),AV_RL16(g+6),g[8],g[9],g[10],g[11],g[12],g[13],g[14],g[15]
-#define LEN_PRETTY_GUID 34
-
-/*
- *
- * File system routines
- *
- */
-
-#define WTV_SECTOR_BITS    12
-#define WTV_SECTOR_SIZE    (1 << WTV_SECTOR_BITS)
-#define WTV_BIGSECTOR_BITS 18
-
-typedef struct {
-    AVIOContext *pb_filesystem;  /** file system (AVFormatContext->pb) */
-
-    int sector_bits;     /** sector shift bits; used to convert sector number into pb_filesystem offset */
-    uint32_t *sectors;   /** file allocation table */
-    int nb_sectors;      /** number of sectors */
-
-    int error;
-    int64_t position;
-    int64_t length;
-} WtvFile;
-
-/**
- * @return bytes read, 0 on end of file, or <0 on error
- */
-static int wtvfile_read_packet(void *opaque, uint8_t *buf, int buf_size)
-{
-    WtvFile *wf = opaque;
-    AVIOContext *pb = wf->pb_filesystem;
-    int nread = 0;
-
-    if (wf->error || pb->error)
-        return -1;
-    if (wf->position >= wf->length || pb->eof_reached)
-        return 0;
-
-    buf_size = FFMIN(buf_size, wf->length - wf->position);
-    while(nread < buf_size) {
-        int n;
-        int remaining_in_sector = (1 << wf->sector_bits) - (wf->position & ((1 << wf->sector_bits) - 1));
-        int read_request        = FFMIN(buf_size - nread, remaining_in_sector);
-
-        n = avio_read(pb, buf, read_request);
-        if (n <= 0)
-            break;
-        nread += n;
-        buf += n;
-        wf->position += n;
-        if (n == remaining_in_sector) {
-            int i = wf->position >> wf->sector_bits;
-            if (i >= wf->nb_sectors ||
-                (wf->sectors[i] != wf->sectors[i - 1] + (1 << (wf->sector_bits - WTV_SECTOR_BITS)) &&
-                avio_seek(pb, (int64_t)wf->sectors[i] << WTV_SECTOR_BITS, SEEK_SET) < 0)) {
-                wf->error = 1;
-                break;
-            }
-        }
-    }
-    return nread;
-}
+#include "wtv.h"
 
-/**
- * @return position (or file length)
- */
-static int64_t wtvfile_seek(void *opaque, int64_t offset, int whence)
-{
-    WtvFile *wf = opaque;
-    AVIOContext *pb = wf->pb_filesystem;
-
-    if (whence == AVSEEK_SIZE)
-        return wf->length;
-    else if (whence == SEEK_CUR)
-        offset = wf->position + offset;
-    else if (whence == SEEK_END)
-        offset = wf->length;
-
-    wf->error = offset < 0 || offset >= wf->length ||
-                avio_seek(pb, ((int64_t)wf->sectors[offset >> wf->sector_bits] << WTV_SECTOR_BITS)
-                              + (offset & ((1 << wf->sector_bits) - 1)), SEEK_SET) < 0;
-    wf->position = offset;
-    return offset;
-}
-
-/**
- * read non-zero integers (le32) from input stream
- * @param pb
- * @param[out] data destination
- * @param     count maximum number of integers to read
- * @return    total number of integers read
- */
-static int read_ints(AVIOContext *pb, uint32_t *data, int count)
-{
-    int i, total = 0;
-    for (i = 0; i < count; i++) {
-        if ((data[total] = avio_rl32(pb)))
-           total++;
-    }
-    return total;
-}
-
-/**
- * Open file
- * @param first_sector  First sector
- * @param length        Length of file (bytes)
- * @param depth         File allocation table depth
- * @return NULL on error
- */
-static AVIOContext * wtvfile_open_sector(int first_sector, uint64_t length, int depth, AVFormatContext *s)
-{
-    AVIOContext *pb;
-    WtvFile *wf;
-    uint8_t *buffer;
-
-    if (avio_seek(s->pb, first_sector << WTV_SECTOR_BITS, SEEK_SET) < 0)
-        return NULL;
-
-    wf = av_mallocz(sizeof(WtvFile));
-    if (!wf)
-        return NULL;
-
-    if (depth == 0) {
-        wf->sectors = av_malloc(sizeof(uint32_t));
-        if (!wf->sectors) {
-            av_free(wf);
-            return NULL;
-        }
-        wf->sectors[0]  = first_sector;
-        wf->nb_sectors  = 1;
-        wf->sector_bits = WTV_SECTOR_BITS;
-    } else if (depth == 1) {
-        wf->sectors = av_malloc(WTV_SECTOR_SIZE);
-        if (!wf->sectors) {
-            av_free(wf);
-            return NULL;
-        }
-        wf->nb_sectors  = read_ints(s->pb, wf->sectors, WTV_SECTOR_SIZE / 4);
-        wf->sector_bits = length & (1ULL<<63) ? WTV_SECTOR_BITS : WTV_BIGSECTOR_BITS;
-    } else if (depth == 2) {
-        uint32_t sectors1[WTV_SECTOR_SIZE / 4];
-        int nb_sectors1 = read_ints(s->pb, sectors1, WTV_SECTOR_SIZE / 4);
-        int i;
-
-        wf->sectors = av_malloc(nb_sectors1 << WTV_SECTOR_BITS);
-        if (!wf->sectors) {
-            av_free(wf);
-            return NULL;
-        }
-        wf->nb_sectors = 0;
-        for (i = 0; i < nb_sectors1; i++) {
-            if (avio_seek(s->pb, (int64_t)sectors1[i] << WTV_SECTOR_BITS, SEEK_SET) < 0)
-                break;
-            wf->nb_sectors += read_ints(s->pb, wf->sectors + i * WTV_SECTOR_SIZE / 4, WTV_SECTOR_SIZE / 4);
-        }
-        wf->sector_bits = length & (1ULL<<63) ? WTV_SECTOR_BITS : WTV_BIGSECTOR_BITS;
-    } else {
-        av_log(s, AV_LOG_ERROR, "unsupported file allocation table depth (0x%x)\n", depth);
-        av_free(wf);
-        return NULL;
-    }
-
-    if (!wf->nb_sectors) {
-        av_free(wf->sectors);
-        av_free(wf);
-        return NULL;
-    }
-
-    /* check length */
-    length &= 0xFFFFFFFFFFFF;
-    if (length > ((int64_t)wf->nb_sectors << wf->sector_bits)) {
-        av_log(s, AV_LOG_WARNING, "reported file length (0x%"PRIx64") exceeds number of available sectors (0x%"PRIx64")\n", length, (int64_t)wf->nb_sectors << wf->sector_bits);
-        length = (int64_t)wf->nb_sectors <<  wf->sector_bits;
-    }
-    wf->length = length;
-
-    /* seek to intial sector */
-    wf->position = 0;
-    if (avio_seek(s->pb, (int64_t)wf->sectors[0] << WTV_SECTOR_BITS, SEEK_SET) < 0) {
-        av_free(wf->sectors);
-        av_free(wf);
-        return NULL;
-    }
-
-    wf->pb_filesystem = s->pb;
-    buffer = av_malloc(1 << wf->sector_bits);
-    if (!buffer) {
-        av_free(wf->sectors);
-        av_free(wf);
-        return NULL;
-    }
-
-    pb = avio_alloc_context(buffer, 1 << wf->sector_bits, 0, wf,
-                           wtvfile_read_packet, NULL, wtvfile_seek);
-    if (!pb) {
-        av_free(buffer);
-        av_free(wf->sectors);
-        av_free(wf);
-    }
-    return pb;
-}
-
-static const ff_asf_guid dir_entry_guid =
+/* WTV GUIDs*/
+const ff_asf_guid ff_dir_entry_guid =
     {0x92,0xB7,0x74,0x91,0x59,0x70,0x70,0x44,0x88,0xDF,0x06,0x3B,0x82,0xCC,0x21,0x3D};
-
-/**
- * Open file using filename
- * @param[in]  buf       directory buffer
- * @param      buf_size  directory buffer size
- * @param[in]  filename
- * @param      filename_size size of filename
- * @return NULL on error
- */
-static AVIOContext * wtvfile_open2(AVFormatContext *s, const uint8_t *buf, int buf_size, const uint8_t *filename, int filename_size)
-{
-    const uint8_t *buf_end = buf + buf_size;
-
-    while(buf + 48 <= buf_end) {
-        int dir_length, name_size, first_sector, depth;
-        uint64_t file_length;
-        const uint8_t *name;
-        if (ff_guidcmp(buf, dir_entry_guid)) {
-            av_log(s, AV_LOG_ERROR, "unknown guid "PRI_GUID", expected dir_entry_guid; "
-                   "remaining directory entries ignored\n", ARG_GUID(buf));
-            break;
-        }
-        dir_length  = AV_RL16(buf + 16);
-        file_length = AV_RL64(buf + 24);
-        name_size   = 2 * AV_RL32(buf + 32);
-        if (buf + 48 + name_size > buf_end) {
-            av_log(s, AV_LOG_ERROR, "filename exceeds buffer size; remaining directory entries ignored\n");
-            break;
-        }
-        first_sector = AV_RL32(buf + 40 + name_size);
-        depth        = AV_RL32(buf + 44 + name_size);
-
-        /* compare file name; test optional null terminator */
-        name = buf + 40;
-        if (name_size >= filename_size &&
-            !memcmp(name, filename, filename_size) &&
-            (name_size < filename_size + 2 || !AV_RN16(name + filename_size)))
-            return wtvfile_open_sector(first_sector, file_length, depth, s);
-
-        buf += dir_length;
-    }
-    return 0;
-}
-
-#define wtvfile_open(s, buf, buf_size, filename) \
-    wtvfile_open2(s, buf, buf_size, filename, sizeof(filename))
-
-/**
- * Close file opened with wtvfile_open_sector(), or wtv_open()
- */
-static void wtvfile_close(AVIOContext *pb)
-{
-    WtvFile *wf = pb->opaque;
-    av_free(wf->sectors);
-    av_free(wf);
-    av_free(pb->buffer);
-    av_free(pb);
-}
-
-/*
- *
- * Main demuxer
- *
- */
-
-typedef struct {
-    int seen_data;
-} WtvStream;
-
-typedef struct {
-    AVIOContext *pb;       /** timeline file */
-    int64_t epoch;
-    int64_t pts;             /** pts for next data chunk */
-    int64_t last_valid_pts;  /** latest valid pts, used for interative seeking */
-
-    /* maintain private seek index, as the AVIndexEntry->pos is relative to the
-       start of the 'timeline' file, not the file system (AVFormatContext->pb) */
-    AVIndexEntry *index_entries;
-    int nb_index_entries;
-    unsigned int index_entries_allocated_size;
-} WtvContext;
-
-typedef struct {
-    enum AVCodecID id;
-    ff_asf_guid guid;
-} AVCodecGuid;
-
-static enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)
-{
-    int i;
-    for (i = 0; guids[i].id != AV_CODEC_ID_NONE; i++) {
-        if (!ff_guidcmp(guids[i].guid, guid))
-            return guids[i].id;
-    }
-    return AV_CODEC_ID_NONE;
-}
-
-/* WTV GUIDs */
-static const ff_asf_guid wtv_guid =
+const ff_asf_guid ff_wtv_guid =
     {0xB7,0xD8,0x00,0x20,0x37,0x49,0xDA,0x11,0xA6,0x4E,0x00,0x07,0xE9,0x5E,0xAD,0x8D};
-static const ff_asf_guid metadata_guid =
-    {0x5A,0xFE,0xD7,0x6D,0xC8,0x1D,0x8F,0x4A,0x99,0x22,0xFA,0xB1,0x1C,0x38,0x14,0x53};
-static const ff_asf_guid timestamp_guid =
+const ff_asf_guid ff_timestamp_guid =
     {0x5B,0x05,0xE6,0x1B,0x97,0xA9,0x49,0x43,0x88,0x17,0x1A,0x65,0x5A,0x29,0x8A,0x97};
-static const ff_asf_guid data_guid =
+const ff_asf_guid ff_data_guid =
     {0x95,0xC3,0xD2,0xC2,0x7E,0x9A,0xDA,0x11,0x8B,0xF7,0x00,0x07,0xE9,0x5E,0xAD,0x8D};
-static const ff_asf_guid stream_guid =
+const ff_asf_guid ff_stream_guid =
     {0xED,0xA4,0x13,0x23,0x2D,0xBF,0x4F,0x45,0xAD,0x8A,0xD9,0x5B,0xA7,0xF9,0x1F,0xEE};
-static const ff_asf_guid stream2_guid =
-    {0xA2,0xC3,0xD2,0xC2,0x7E,0x9A,0xDA,0x11,0x8B,0xF7,0x00,0x07,0xE9,0x5E,0xAD,0x8D};
-static const ff_asf_guid EVENTID_SubtitleSpanningEvent =
-    {0x48,0xC0,0xCE,0x5D,0xB9,0xD0,0x63,0x41,0x87,0x2C,0x4F,0x32,0x22,0x3B,0xE8,0x8A};
-static const ff_asf_guid EVENTID_LanguageSpanningEvent =
-    {0x6D,0x66,0x92,0xE2,0x02,0x9C,0x8D,0x44,0xAA,0x8D,0x78,0x1A,0x93,0xFD,0xC3,0x95};
-static const ff_asf_guid EVENTID_AudioDescriptorSpanningEvent =
-    {0x1C,0xD4,0x7B,0x10,0xDA,0xA6,0x91,0x46,0x83,0x69,0x11,0xB2,0xCD,0xAA,0x28,0x8E};
-static const ff_asf_guid EVENTID_CtxADescriptorSpanningEvent =
-    {0xE6,0xA2,0xB4,0x3A,0x47,0x42,0x34,0x4B,0x89,0x6C,0x30,0xAF,0xA5,0xD2,0x1C,0x24};
-static const ff_asf_guid EVENTID_CSDescriptorSpanningEvent =
-    {0xD9,0x79,0xE7,0xEf,0xF0,0x97,0x86,0x47,0x80,0x0D,0x95,0xCF,0x50,0x5D,0xDC,0x66};
-static const ff_asf_guid EVENTID_DVBScramblingControlSpanningEvent =
-    {0xC4,0xE1,0xD4,0x4B,0xA1,0x90,0x09,0x41,0x82,0x36,0x27,0xF0,0x0E,0x7D,0xCC,0x5B};
-static const ff_asf_guid EVENTID_StreamIDSpanningEvent =
-    {0x68,0xAB,0xF1,0xCA,0x53,0xE1,0x41,0x4D,0xA6,0xB3,0xA7,0xC9,0x98,0xDB,0x75,0xEE};
-static const ff_asf_guid EVENTID_TeletextSpanningEvent =
-    {0x50,0xD9,0x99,0x95,0x33,0x5F,0x17,0x46,0xAF,0x7C,0x1E,0x54,0xB5,0x10,0xDA,0xA3};
-static const ff_asf_guid EVENTID_AudioTypeSpanningEvent =
-    {0xBE,0xBF,0x1C,0x50,0x49,0xB8,0xCE,0x42,0x9B,0xE9,0x3D,0xB8,0x69,0xFB,0x82,0xB3};
-
-/* Windows media GUIDs */
+const ff_asf_guid ff_mediatype_audio =
+    {'a','u','d','s',FF_MEDIASUBTYPE_BASE_GUID};
+const ff_asf_guid ff_mediatype_video =
+    {'v','i','d','s',FF_MEDIASUBTYPE_BASE_GUID};
+const ff_asf_guid ff_format_none =
+    {0xD6,0x17,0x64,0x0F,0x18,0xC3,0xD0,0x11,0xA4,0x3F,0x00,0xA0,0xC9,0x22,0x31,0x96};
 
-#define MEDIASUBTYPE_BASE_GUID \
-    0x00,0x00,0x10,0x00,0x80,0x00,0x00,0xAA,0x00,0x38,0x9B,0x71
+/* declare utf16le strings */
+#define _ , 0,
+const uint8_t ff_timeline_le16[] =
+    {'t'_'i'_'m'_'e'_'l'_'i'_'n'_'e', 0};
+const uint8_t ff_timeline_table_0_entries_Events_le16[] =
+    {'t'_'i'_'m'_'e'_'l'_'i'_'n'_'e'_'.'_'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'e'_'n'_'t'_'r'_'i'_'e'_'s'_'.'_'E'_'v'_'e'_'n'_'t'_'s', 0};
+const uint8_t ff_table_0_entries_legacy_attrib_le16[] =
+    {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'e'_'n'_'t'_'r'_'i'_'e'_'s'_'.'_'l'_'e'_'g'_'a'_'c'_'y'_'_'_'a'_'t'_'t'_'r'_'i'_'b', 0};
+const uint8_t ff_table_0_entries_time_le16[] =
+    {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'e'_'n'_'t'_'r'_'i'_'e'_'s'_'.'_'t'_'i'_'m'_'e', 0};
+#undef _
 
-/* Media types */
-static const ff_asf_guid mediatype_audio =
-    {'a','u','d','s',MEDIASUBTYPE_BASE_GUID};
-static const ff_asf_guid mediatype_video =
-    {'v','i','d','s',MEDIASUBTYPE_BASE_GUID};
-static const ff_asf_guid mediasubtype_mpeg1payload =
-    {0x81,0xEB,0x36,0xE4,0x4F,0x52,0xCE,0x11,0x9F,0x53,0x00,0x20,0xAF,0x0B,0xA7,0x70};
-static const ff_asf_guid mediatype_mpeg2_sections =
-    {0x6C,0x17,0x5F,0x45,0x06,0x4B,0xCE,0x47,0x9A,0xEF,0x8C,0xAE,0xF7,0x3D,0xF7,0xB5};
-static const ff_asf_guid mediatype_mpeg2_pes =
-    {0x20,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA};
-static const ff_asf_guid mediatype_mstvcaption =
-    {0x89,0x8A,0x8B,0xB8,0x49,0xB0,0x80,0x4C,0xAD,0xCF,0x58,0x98,0x98,0x5E,0x22,0xC1};
+const ff_asf_guid ff_DSATTRIB_TRANSPORT_PROPERTIES =
+    {0x12,0xF6,0x22,0xB6,0xAD,0x47,0x71,0x46,0xAD,0x6C,0x05,0xA9,0x8E,0x65,0xDE,0x3A};
+const ff_asf_guid ff_metadata_guid =
+    {0x5A,0xFE,0xD7,0x6D,0xC8,0x1D,0x8F,0x4A,0x99,0x22,0xFA,0xB1,0x1C,0x38,0x14,0x53};
+const ff_asf_guid ff_stream2_guid =
+    {0xA2,0xC3,0xD2,0xC2,0x7E,0x9A,0xDA,0x11,0x8B,0xF7,0x00,0x07,0xE9,0x5E,0xAD,0x8D};
 
 /* Media subtypes */
-static const ff_asf_guid mediasubtype_cpfilters_processed =
+const ff_asf_guid ff_mediasubtype_cpfilters_processed =
     {0x28,0xBD,0xAD,0x46,0xD0,0x6F,0x96,0x47,0x93,0xB2,0x15,0x5C,0x51,0xDC,0x04,0x8D};
-static const ff_asf_guid mediasubtype_dvb_subtitle =
-    {0xC3,0xCB,0xFF,0x34,0xB3,0xD5,0x71,0x41,0x90,0x02,0xD4,0xC6,0x03,0x01,0x69,0x7F};
-static const ff_asf_guid mediasubtype_teletext =
-    {0xE3,0x76,0x2A,0xF7,0x0A,0xEB,0xD0,0x11,0xAC,0xE4,0x00,0x00,0xC0,0xCC,0x16,0xBA};
-static const ff_asf_guid mediasubtype_dtvccdata =
-    {0xAA,0xDD,0x2A,0xF5,0xF0,0x36,0xF5,0x43,0x95,0xEA,0x6D,0x86,0x64,0x84,0x26,0x2A};
-static const ff_asf_guid mediasubtype_mpeg2_sections =
-    {0x79,0x85,0x9F,0x4A,0xF8,0x6B,0x92,0x43,0x8A,0x6D,0xD2,0xDD,0x09,0xFA,0x78,0x61};
 
 /* Formats */
-static const ff_asf_guid format_cpfilters_processed =
+const ff_asf_guid ff_format_cpfilters_processed =
     {0x6F,0xB3,0x39,0x67,0x5F,0x1D,0xC2,0x4A,0x81,0x92,0x28,0xBB,0x0E,0x73,0xD1,0x6A};
-static const ff_asf_guid format_waveformatex =
+const ff_asf_guid ff_format_waveformatex =
     {0x81,0x9F,0x58,0x05,0x56,0xC3,0xCE,0x11,0xBF,0x01,0x00,0xAA,0x00,0x55,0x59,0x5A};
-static const ff_asf_guid format_videoinfo2 =
-    {0xA0,0x76,0x2A,0xF7,0x0A,0xEB,0xD0,0x11,0xAC,0xE4,0x00,0x00,0xC0,0xCC,0x16,0xBA};
-static const ff_asf_guid format_mpeg2_video =
+const ff_asf_guid ff_format_mpeg2_video =
     {0xE3,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA};
-static const ff_asf_guid format_none =
-    {0xD6,0x17,0x64,0x0F,0x18,0xC3,0xD0,0x11,0xA4,0x3F,0x00,0xA0,0xC9,0x22,0x31,0x96};
 
-static const AVCodecGuid video_guids[] = {
+const AVCodecGuid ff_video_guids[] = {
     {AV_CODEC_ID_MPEG2VIDEO, {0x26,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA}},
     {AV_CODEC_ID_NONE}
 };
-
-static const AVCodecGuid audio_guids[] = {
-    {AV_CODEC_ID_AC3,        {0x2C,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA}},
-    {AV_CODEC_ID_EAC3,       {0xAF,0x87,0xFB,0xA7,0x02,0x2D,0xFB,0x42,0xA4,0xD4,0x05,0xCD,0x93,0x84,0x3B,0xDD}},
-    {AV_CODEC_ID_MP2,        {0x2B,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA}},
-    {AV_CODEC_ID_NONE}
-};
-
-static int read_probe(AVProbeData *p)
-{
-    return ff_guidcmp(p->buf, wtv_guid) ? 0 : AVPROBE_SCORE_MAX;
-}
-
-/**
- * Convert win32 FILETIME to ISO-8601 string
- */
-static void filetime_to_iso8601(char *buf, int buf_size, int64_t value)
-{
-    time_t t = (value / 10000000LL) - 11644473600LL;
-    struct tm *tm = gmtime(&t);
-    if (tm)
-        strftime(buf, buf_size, "%Y-%m-%d %H:%M:%S", gmtime(&t));
-    else
-        buf[0] = '\0';
-}
-
-/**
- * Convert crazy time (100ns since 1 Jan 0001) to ISO-8601 string
- */
-static void crazytime_to_iso8601(char *buf, int buf_size, int64_t value)
-{
-    time_t t = (value / 10000000LL) - 719162LL*86400LL;
-    struct tm *tm = gmtime(&t);
-    if (tm)
-        strftime(buf, buf_size, "%Y-%m-%d %H:%M:%S", gmtime(&t));
-    else
-        buf[0] = '\0';
-}
-
-/**
- * Convert OLE DATE to ISO-8601 string
- */
-static void oledate_to_iso8601(char *buf, int buf_size, int64_t value)
-{
-    time_t t = 631112400LL + 86400*av_int2double(value);
-    struct tm *tm = gmtime(&t);
-    if (tm)
-        strftime(buf, buf_size, "%Y-%m-%d %H:%M:%S", gmtime(&t));
-    else
-        buf[0] = '\0';
-}
-
-static void get_attachment(AVFormatContext *s, AVIOContext *pb, int length)
-{
-    char mime[1024];
-    char description[1024];
-    unsigned int filesize;
-    AVStream *st;
-    int64_t pos = avio_tell(pb);
-
-    avio_get_str16le(pb, INT_MAX, mime, sizeof(mime));
-    if (strcmp(mime, "image/jpeg"))
-        goto done;
-
-    avio_r8(pb);
-    avio_get_str16le(pb, INT_MAX, description, sizeof(description));
-    filesize = avio_rl32(pb);
-    if (!filesize)
-        goto done;
-
-    st = avformat_new_stream(s, NULL);
-    if (!st)
-        goto done;
-    av_dict_set(&st->metadata, "title", description, 0);
-    st->codec->codec_id   = AV_CODEC_ID_MJPEG;
-    st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT;
-    st->codec->extradata  = av_mallocz(filesize);
-    if (!st->codec->extradata)
-        goto done;
-    st->codec->extradata_size = filesize;
-    avio_read(pb, st->codec->extradata, filesize);
-done:
-    avio_seek(pb, pos + length, SEEK_SET);
-}
-
-static void get_tag(AVFormatContext *s, AVIOContext *pb, const char *key, int type, int length)
-{
-    int buf_size = FFMAX(2*length, LEN_PRETTY_GUID) + 1;
-    char *buf = av_malloc(buf_size);
-    if (!buf)
-        return;
-
-    if (type == 0 && length == 4) {
-        snprintf(buf, buf_size, "%"PRIi32, avio_rl32(pb));
-    } else if (type == 1) {
-        avio_get_str16le(pb, length, buf, buf_size);
-        if (!strlen(buf)) {
-           av_free(buf);
-           return;
-        }
-    } else if (type == 3 && length == 4) {
-        strcpy(buf, avio_rl32(pb) ? "true" : "false");
-    } else if (type == 4 && length == 8) {
-        int64_t num = avio_rl64(pb);
-        if (!strcmp(key, "WM/EncodingTime") ||
-            !strcmp(key, "WM/MediaOriginalBroadcastDateTime"))
-            filetime_to_iso8601(buf, buf_size, num);
-        else if (!strcmp(key, "WM/WMRVEncodeTime") ||
-                 !strcmp(key, "WM/WMRVEndTime"))
-            crazytime_to_iso8601(buf, buf_size, num);
-        else if (!strcmp(key, "WM/WMRVExpirationDate"))
-            oledate_to_iso8601(buf, buf_size, num);
-        else if (!strcmp(key, "WM/WMRVBitrate"))
-            snprintf(buf, buf_size, "%f", av_int2double(num));
-        else
-            snprintf(buf, buf_size, "%"PRIi64, num);
-    } else if (type == 5 && length == 2) {
-        snprintf(buf, buf_size, "%"PRIi16, avio_rl16(pb));
-    } else if (type == 6 && length == 16) {
-        ff_asf_guid guid;
-        avio_read(pb, guid, 16);
-        snprintf(buf, buf_size, PRI_PRETTY_GUID, ARG_PRETTY_GUID(guid));
-    } else if (type == 2 && !strcmp(key, "WM/Picture")) {
-        get_attachment(s, pb, length);
-        av_freep(&buf);
-        return;
-    } else {
-        av_freep(&buf);
-        av_log(s, AV_LOG_WARNING, "unsupported metadata entry; key:%s, type:%d, length:0x%x\n", key, type, length);
-        avio_skip(pb, length);
-        return;
-    }
-
-    av_dict_set(&s->metadata, key, buf, 0);
-    av_freep(&buf);
-}
-
-/**
- * Parse metadata entries
- */
-static void parse_legacy_attrib(AVFormatContext *s, AVIOContext *pb)
-{
-    ff_asf_guid guid;
-    int length, type;
-    while(!pb->eof_reached) {
-        char key[1024];
-        ff_get_guid(pb, &guid);
-        type   = avio_rl32(pb);
-        length = avio_rl32(pb);
-        if (!length)
-            break;
-        if (ff_guidcmp(&guid, metadata_guid)) {
-            av_log(s, AV_LOG_WARNING, "unknown guid "PRI_GUID", expected metadata_guid; "
-                   "remaining metadata entries ignored\n", ARG_GUID(guid));
-            break;
-        }
-        avio_get_str16le(pb, INT_MAX, key, sizeof(key));
-        get_tag(s, pb, key, type, length);
-    }
-
-    ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
-}
-
-/**
- * parse VIDEOINFOHEADER2 structure
- * @return bytes consumed
- */
-static int parse_videoinfoheader2(AVFormatContext *s, AVStream *st)
-{
-    WtvContext *wtv = s->priv_data;
-    AVIOContext *pb = wtv->pb;
-
-    avio_skip(pb, 72);  // picture aspect ratio is unreliable
-    ff_get_bmp_header(pb, st);
-
-    return 72 + 40;
-}
-
-/**
- * Parse MPEG1WAVEFORMATEX extradata structure
- */
-static void parse_mpeg1waveformatex(AVStream *st)
-{
-    /* fwHeadLayer */
-    switch (AV_RL16(st->codec->extradata)) {
-    case 0x0001 : st->codec->codec_id = AV_CODEC_ID_MP1; break;
-    case 0x0002 : st->codec->codec_id = AV_CODEC_ID_MP2; break;
-    case 0x0004 : st->codec->codec_id = AV_CODEC_ID_MP3; break;
-    }
-
-    st->codec->bit_rate = AV_RL32(st->codec->extradata + 2); /* dwHeadBitrate */
-
-    /* dwHeadMode */
-    switch (AV_RL16(st->codec->extradata + 6)) {
-    case 1 : case 2 : case 4 : st->codec->channels = 2; break;
-    case 8 :                   st->codec->channels = 1; break;
-    }
-}
-
-/**
- * Initialise stream
- * @param st Stream to initialise, or NULL to create and initialise new stream
- * @return NULL on error
- */
-static AVStream * new_stream(AVFormatContext *s, AVStream *st, int sid, int codec_type)
-{
-    if (st) {
-        if (st->codec->extradata) {
-            av_freep(&st->codec->extradata);
-            st->codec->extradata_size = 0;
-        }
-    } else {
-        WtvStream *wst = av_mallocz(sizeof(WtvStream));
-        if (!wst)
-            return NULL;
-        st = avformat_new_stream(s, NULL);
-        if (!st)
-            return NULL;
-        st->id = sid;
-        st->priv_data = wst;
-    }
-    st->codec->codec_type = codec_type;
-    st->need_parsing      = AVSTREAM_PARSE_FULL;
-    avpriv_set_pts_info(st, 64, 1, 10000000);
-    return st;
-}
-
-/**
- * parse Media Type structure and populate stream
- * @param st         Stream, or NULL to create new stream
- * @param mediatype  Mediatype GUID
- * @param subtype    Subtype GUID
- * @param formattype Format GUID
- * @param size       Size of format buffer
- * @return NULL on error
- */
-static AVStream * parse_media_type(AVFormatContext *s, AVStream *st, int sid,
-                                   ff_asf_guid mediatype, ff_asf_guid subtype,
-                                   ff_asf_guid formattype, int size)
-{
-    WtvContext *wtv = s->priv_data;
-    AVIOContext *pb = wtv->pb;
-    if (!ff_guidcmp(subtype, mediasubtype_cpfilters_processed) &&
-        !ff_guidcmp(formattype, format_cpfilters_processed)) {
-        ff_asf_guid actual_subtype;
-        ff_asf_guid actual_formattype;
-
-        if (size < 32) {
-            av_log(s, AV_LOG_WARNING, "format buffer size underflow\n");
-            avio_skip(pb, size);
-            return NULL;
-        }
-
-        avio_skip(pb, size - 32);
-        ff_get_guid(pb, &actual_subtype);
-        ff_get_guid(pb, &actual_formattype);
-        avio_seek(pb, -size, SEEK_CUR);
-
-        st = parse_media_type(s, st, sid, mediatype, actual_subtype, actual_formattype, size - 32);
-        avio_skip(pb, 32);
-        return st;
-    } else if (!ff_guidcmp(mediatype, mediatype_audio)) {
-        st = new_stream(s, st, sid, AVMEDIA_TYPE_AUDIO);
-        if (!st)
-            return NULL;
-        if (!ff_guidcmp(formattype, format_waveformatex)) {
-            int ret = ff_get_wav_header(pb, st->codec, size);
-            if (ret < 0)
-                return NULL;
-        } else {
-            if (ff_guidcmp(formattype, format_none))
-                av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
-            avio_skip(pb, size);
-        }
-
-        if (!memcmp(subtype + 4, (const uint8_t[]){MEDIASUBTYPE_BASE_GUID}, 12)) {
-            st->codec->codec_id = ff_wav_codec_get_id(AV_RL32(subtype), st->codec->bits_per_coded_sample);
-        } else if (!ff_guidcmp(subtype, mediasubtype_mpeg1payload)) {
-            if (st->codec->extradata && st->codec->extradata_size >= 22)
-                parse_mpeg1waveformatex(st);
-            else
-                av_log(s, AV_LOG_WARNING, "MPEG1WAVEFORMATEX underflow\n");
-        } else {
-            st->codec->codec_id = ff_codec_guid_get_id(audio_guids, subtype);
-            if (st->codec->codec_id == AV_CODEC_ID_NONE)
-                av_log(s, AV_LOG_WARNING, "unknown subtype:"PRI_GUID"\n", ARG_GUID(subtype));
-        }
-        return st;
-    } else if (!ff_guidcmp(mediatype, mediatype_video)) {
-        st = new_stream(s, st, sid, AVMEDIA_TYPE_VIDEO);
-        if (!st)
-            return NULL;
-        if (!ff_guidcmp(formattype, format_videoinfo2)) {
-            int consumed = parse_videoinfoheader2(s, st);
-            avio_skip(pb, FFMAX(size - consumed, 0));
-        } else if (!ff_guidcmp(formattype, format_mpeg2_video)) {
-            int consumed = parse_videoinfoheader2(s, st);
-            avio_skip(pb, FFMAX(size - consumed, 0));
-        } else {
-            if (ff_guidcmp(formattype, format_none))
-                av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
-            avio_skip(pb, size);
-        }
-
-        if (!memcmp(subtype + 4, (const uint8_t[]){MEDIASUBTYPE_BASE_GUID}, 12)) {
-            st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(subtype));
-        } else {
-            st->codec->codec_id = ff_codec_guid_get_id(video_guids, subtype);
-        }
-        if (st->codec->codec_id == AV_CODEC_ID_NONE)
-            av_log(s, AV_LOG_WARNING, "unknown subtype:"PRI_GUID"\n", ARG_GUID(subtype));
-        return st;
-    } else if (!ff_guidcmp(mediatype, mediatype_mpeg2_pes) &&
-               !ff_guidcmp(subtype, mediasubtype_dvb_subtitle)) {
-        st = new_stream(s, st, sid, AVMEDIA_TYPE_SUBTITLE);
-        if (!st)
-            return NULL;
-        if (ff_guidcmp(formattype, format_none))
-            av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
-        avio_skip(pb, size);
-        st->codec->codec_id = AV_CODEC_ID_DVB_SUBTITLE;
-        return st;
-    } else if (!ff_guidcmp(mediatype, mediatype_mstvcaption) &&
-               (!ff_guidcmp(subtype, mediasubtype_teletext) || !ff_guidcmp(subtype, mediasubtype_dtvccdata))) {
-        st = new_stream(s, st, sid, AVMEDIA_TYPE_SUBTITLE);
-        if (!st)
-            return NULL;
-        if (ff_guidcmp(formattype, format_none))
-            av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
-        avio_skip(pb, size);
-        st->codec->codec_id   = AV_CODEC_ID_DVB_TELETEXT;
-        return st;
-    } else if (!ff_guidcmp(mediatype, mediatype_mpeg2_sections) &&
-               !ff_guidcmp(subtype, mediasubtype_mpeg2_sections)) {
-        if (ff_guidcmp(formattype, format_none))
-            av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
-        avio_skip(pb, size);
-        return NULL;
-    }
-
-    av_log(s, AV_LOG_WARNING, "unknown media type, mediatype:"PRI_GUID
-                              ", subtype:"PRI_GUID", formattype:"PRI_GUID"\n",
-                              ARG_GUID(mediatype), ARG_GUID(subtype), ARG_GUID(formattype));
-    avio_skip(pb, size);
-    return NULL;
-}
-
-enum {
-    SEEK_TO_DATA = 0,
-    SEEK_TO_PTS,
-};
-
-/**
- * Parse WTV chunks
- * @param mode SEEK_TO_DATA or SEEK_TO_PTS
- * @param seekts timestamp
- * @param[out] len_ptr Length of data chunk
- * @return stream index of data chunk, or <0 on error
- */
-static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_ptr)
-{
-    WtvContext *wtv = s->priv_data;
-    AVIOContext *pb = wtv->pb;
-    while (!pb->eof_reached) {
-        ff_asf_guid g;
-        int len, sid, consumed;
-
-        ff_get_guid(pb, &g);
-        len = avio_rl32(pb);
-        if (len < 32)
-            break;
-        sid = avio_rl32(pb) & 0x7FFF;
-        avio_skip(pb, 8);
-        consumed = 32;
-
-        if (!ff_guidcmp(g, stream_guid)) {
-            if (ff_find_stream_index(s, sid) < 0) {
-                ff_asf_guid mediatype, subtype, formattype;
-                int size;
-                avio_skip(pb, 28);
-                ff_get_guid(pb, &mediatype);
-                ff_get_guid(pb, &subtype);
-                avio_skip(pb, 12);
-                ff_get_guid(pb, &formattype);
-                size = avio_rl32(pb);
-                parse_media_type(s, 0, sid, mediatype, subtype, formattype, size);
-                consumed += 92 + size;
-            }
-        } else if (!ff_guidcmp(g, stream2_guid)) {
-            int stream_index = ff_find_stream_index(s, sid);
-            if (stream_index >= 0 && !((WtvStream*)s->streams[stream_index]->priv_data)->seen_data) {
-                ff_asf_guid mediatype, subtype, formattype;
-                int size;
-                avio_skip(pb, 12);
-                ff_get_guid(pb, &mediatype);
-                ff_get_guid(pb, &subtype);
-                avio_skip(pb, 12);
-                ff_get_guid(pb, &formattype);
-                size = avio_rl32(pb);
-                parse_media_type(s, s->streams[stream_index], sid, mediatype, subtype, formattype, size);
-                consumed += 76 + size;
-            }
-        } else if (!ff_guidcmp(g, EVENTID_AudioDescriptorSpanningEvent) ||
-                   !ff_guidcmp(g, EVENTID_CtxADescriptorSpanningEvent) ||
-                   !ff_guidcmp(g, EVENTID_CSDescriptorSpanningEvent) ||
-                   !ff_guidcmp(g, EVENTID_StreamIDSpanningEvent) ||
-                   !ff_guidcmp(g, EVENTID_SubtitleSpanningEvent) ||
-                   !ff_guidcmp(g, EVENTID_TeletextSpanningEvent)) {
-            int stream_index = ff_find_stream_index(s, sid);
-            if (stream_index >= 0) {
-                AVStream *st = s->streams[stream_index];
-                uint8_t buf[258];
-                const uint8_t *pbuf = buf;
-                int buf_size;
-
-                avio_skip(pb, 8);
-                consumed += 8;
-                if (!ff_guidcmp(g, EVENTID_CtxADescriptorSpanningEvent) ||
-                    !ff_guidcmp(g, EVENTID_CSDescriptorSpanningEvent)) {
-                    avio_skip(pb, 6);
-                    consumed += 6;
-                }
-
-                buf_size = FFMIN(len - consumed, sizeof(buf));
-                avio_read(pb, buf, buf_size);
-                consumed += buf_size;
-                ff_parse_mpeg2_descriptor(s, st, 0, &pbuf, buf + buf_size, NULL, 0, 0, NULL);
-            }
-        } else if (!ff_guidcmp(g, EVENTID_AudioTypeSpanningEvent)) {
-            int stream_index = ff_find_stream_index(s, sid);
-            if (stream_index >= 0) {
-                AVStream *st = s->streams[stream_index];
-                int audio_type;
-                avio_skip(pb, 8);
-                audio_type = avio_r8(pb);
-                if (audio_type == 2)
-                    st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
-                else if (audio_type == 3)
-                    st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
-                consumed += 9;
-            }
-        } else if (!ff_guidcmp(g, EVENTID_DVBScramblingControlSpanningEvent)) {
-            int stream_index = ff_find_stream_index(s, sid);
-            if (stream_index >= 0) {
-                avio_skip(pb, 12);
-                if (avio_rl32(pb))
-                    av_log(s, AV_LOG_WARNING, "DVB scrambled stream detected (st:%d), decoding will likely fail\n", stream_index);
-                consumed += 16;
-            }
-        } else if (!ff_guidcmp(g, EVENTID_LanguageSpanningEvent)) {
-            int stream_index = ff_find_stream_index(s, sid);
-            if (stream_index >= 0) {
-                AVStream *st = s->streams[stream_index];
-                uint8_t language[4];
-                avio_skip(pb, 12);
-                avio_read(pb, language, 3);
-                if (language[0]) {
-                    language[3] = 0;
-                    av_dict_set(&st->metadata, "language", language, 0);
-                    if (!strcmp(language, "nar") || !strcmp(language, "NAR"))
-                        st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
-                }
-                consumed += 15;
-            }
-        } else if (!ff_guidcmp(g, timestamp_guid)) {
-            int stream_index = ff_find_stream_index(s, sid);
-            if (stream_index >= 0) {
-                avio_skip(pb, 8);
-                wtv->pts = avio_rl64(pb);
-                consumed += 16;
-                if (wtv->pts == -1)
-                    wtv->pts = AV_NOPTS_VALUE;
-                else {
-                    wtv->last_valid_pts = wtv->pts;
-                    if (wtv->epoch == AV_NOPTS_VALUE || wtv->pts < wtv->epoch)
-                        wtv->epoch = wtv->pts;
-                if (mode == SEEK_TO_PTS && wtv->pts >= seekts) {
-#define WTV_PAD8(x) (((x) + 7) & ~7)
-                    avio_skip(pb, WTV_PAD8(len) - consumed);
-                    return 0;
-                }
-                }
-            }
-        } else if (!ff_guidcmp(g, data_guid)) {
-            int stream_index = ff_find_stream_index(s, sid);
-            if (mode == SEEK_TO_DATA && stream_index >= 0 && len > 32) {
-                WtvStream *wst = s->streams[stream_index]->priv_data;
-                wst->seen_data = 1;
-                if (len_ptr) {
-                    *len_ptr = len;
-                }
-                return stream_index;
-            }
-        } else if (
-            !ff_guidcmp(g, /* DSATTRIB_CAPTURE_STREAMTIME */ (const ff_asf_guid){0x14,0x56,0x1A,0x0C,0xCD,0x30,0x40,0x4F,0xBC,0xBF,0xD0,0x3E,0x52,0x30,0x62,0x07}) ||
-            !ff_guidcmp(g, /* DSATTRIB_PicSampleSeq */ (const ff_asf_guid){0x02,0xAE,0x5B,0x2F,0x8F,0x7B,0x60,0x4F,0x82,0xD6,0xE4,0xEA,0x2F,0x1F,0x4C,0x99}) ||
-            !ff_guidcmp(g, /* DSATTRIB_TRANSPORT_PROPERTIES */ (const ff_asf_guid){0x12,0xF6,0x22,0xB6,0xAD,0x47,0x71,0x46,0xAD,0x6C,0x05,0xA9,0x8E,0x65,0xDE,0x3A}) ||
-            !ff_guidcmp(g, /* dvr_ms_vid_frame_rep_data */ (const ff_asf_guid){0xCC,0x32,0x64,0xDD,0x29,0xE2,0xDB,0x40,0x80,0xF6,0xD2,0x63,0x28,0xD2,0x76,0x1F}) ||
-            !ff_guidcmp(g, /* EVENTID_ChannelChangeSpanningEvent */ (const ff_asf_guid){0xE5,0xC5,0x67,0x90,0x5C,0x4C,0x05,0x42,0x86,0xC8,0x7A,0xFE,0x20,0xFE,0x1E,0xFA}) ||
-            !ff_guidcmp(g, /* EVENTID_ChannelInfoSpanningEvent */ (const ff_asf_guid){0x80,0x6D,0xF3,0x41,0x32,0x41,0xC2,0x4C,0xB1,0x21,0x01,0xA4,0x32,0x19,0xD8,0x1B}) ||
-            !ff_guidcmp(g, /* EVENTID_ChannelTypeSpanningEvent */ (const ff_asf_guid){0x51,0x1D,0xAB,0x72,0xD2,0x87,0x9B,0x48,0xBA,0x11,0x0E,0x08,0xDC,0x21,0x02,0x43}) ||
-            !ff_guidcmp(g, /* EVENTID_PIDListSpanningEvent */ (const ff_asf_guid){0x65,0x8F,0xFC,0x47,0xBB,0xE2,0x34,0x46,0x9C,0xEF,0xFD,0xBF,0xE6,0x26,0x1D,0x5C}) ||
-            !ff_guidcmp(g, /* EVENTID_SignalAndServiceStatusSpanningEvent */ (const ff_asf_guid){0xCB,0xC5,0x68,0x80,0x04,0x3C,0x2B,0x49,0xB4,0x7D,0x03,0x08,0x82,0x0D,0xCE,0x51}) ||
-            !ff_guidcmp(g, /* EVENTID_StreamTypeSpanningEvent */ (const ff_asf_guid){0xBC,0x2E,0xAF,0x82,0xA6,0x30,0x64,0x42,0xA8,0x0B,0xAD,0x2E,0x13,0x72,0xAC,0x60}) ||
-            !ff_guidcmp(g, (const ff_asf_guid){0x1E,0xBE,0xC3,0xC5,0x43,0x92,0xDC,0x11,0x85,0xE5,0x00,0x12,0x3F,0x6F,0x73,0xB9}) ||
-            !ff_guidcmp(g, (const ff_asf_guid){0x3B,0x86,0xA2,0xB1,0xEB,0x1E,0xC3,0x44,0x8C,0x88,0x1C,0xA3,0xFF,0xE3,0xE7,0x6A}) ||
-            !ff_guidcmp(g, (const ff_asf_guid){0x4E,0x7F,0x4C,0x5B,0xC4,0xD0,0x38,0x4B,0xA8,0x3E,0x21,0x7F,0x7B,0xBF,0x52,0xE7}) ||
-            !ff_guidcmp(g, (const ff_asf_guid){0x63,0x36,0xEB,0xFE,0xA1,0x7E,0xD9,0x11,0x83,0x08,0x00,0x07,0xE9,0x5E,0xAD,0x8D}) ||
-            !ff_guidcmp(g, (const ff_asf_guid){0x70,0xE9,0xF1,0xF8,0x89,0xA4,0x4C,0x4D,0x83,0x73,0xB8,0x12,0xE0,0xD5,0xF8,0x1E}) ||
-            !ff_guidcmp(g, (const ff_asf_guid){0x96,0xC3,0xD2,0xC2,0x7E,0x9A,0xDA,0x11,0x8B,0xF7,0x00,0x07,0xE9,0x5E,0xAD,0x8D}) ||
-            !ff_guidcmp(g, (const ff_asf_guid){0x97,0xC3,0xD2,0xC2,0x7E,0x9A,0xDA,0x11,0x8B,0xF7,0x00,0x07,0xE9,0x5E,0xAD,0x8D}) ||
-            !ff_guidcmp(g, (const ff_asf_guid){0xA1,0xC3,0xD2,0xC2,0x7E,0x9A,0xDA,0x11,0x8B,0xF7,0x00,0x07,0xE9,0x5E,0xAD,0x8D})) {
-            //ignore known guids
-        } else
-            av_log(s, AV_LOG_WARNING, "unsupported chunk:"PRI_GUID"\n", ARG_GUID(g));
-
-        avio_skip(pb, WTV_PAD8(len) - consumed);
-    }
-    return AVERROR_EOF;
-}
-
-/* declare utf16le strings */
-#define _ , 0,
-static const uint8_t timeline_le16[] =
-    {'t'_'i'_'m'_'e'_'l'_'i'_'n'_'e', 0};
-static const uint8_t table_0_entries_legacy_attrib_le16[] =
-    {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'e'_'n'_'t'_'r'_'i'_'e'_'s'_'.'_'l'_'e'_'g'_'a'_'c'_'y'_'_'_'a'_'t'_'t'_'r'_'i'_'b', 0};
-static const uint8_t table_0_entries_time_le16[] =
-    {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'e'_'n'_'t'_'r'_'i'_'e'_'s'_'.'_'t'_'i'_'m'_'e', 0};
-static const uint8_t timeline_table_0_entries_Events_le16[] =
-    {'t'_'i'_'m'_'e'_'l'_'i'_'n'_'e'_'.'_'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'e'_'n'_'t'_'r'_'i'_'e'_'s'_'.'_'E'_'v'_'e'_'n'_'t'_'s', 0};
-#undef _
-
-static int read_header(AVFormatContext *s)
-{
-    WtvContext *wtv = s->priv_data;
-    int root_sector, root_size;
-    uint8_t root[WTV_SECTOR_SIZE];
-    AVIOContext *pb;
-    int64_t timeline_pos;
-    int ret;
-
-    wtv->epoch          =
-    wtv->pts            =
-    wtv->last_valid_pts = AV_NOPTS_VALUE;
-
-    /* read root directory sector */
-    avio_skip(s->pb, 0x30);
-    root_size = avio_rl32(s->pb);
-    if (root_size > sizeof(root)) {
-        av_log(s, AV_LOG_ERROR, "root directory size exceeds sector size\n");
-        return AVERROR_INVALIDDATA;
-    }
-    avio_skip(s->pb, 4);
-    root_sector = avio_rl32(s->pb);
-
-    avio_seek(s->pb, root_sector << WTV_SECTOR_BITS, SEEK_SET);
-    root_size = avio_read(s->pb, root, root_size);
-    if (root_size < 0)
-        return AVERROR_INVALIDDATA;
-
-    /* parse chunks up until first data chunk */
-    wtv->pb = wtvfile_open(s, root, root_size, timeline_le16);
-    if (!wtv->pb) {
-        av_log(s, AV_LOG_ERROR, "timeline data missing\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    ret = parse_chunks(s, SEEK_TO_DATA, 0, 0);
-    if (ret < 0)
-        return ret;
-    avio_seek(wtv->pb, -32, SEEK_CUR);
-
-    timeline_pos = avio_tell(s->pb); // save before opening another file
-
-    /* read metadata */
-    pb = wtvfile_open(s, root, root_size, table_0_entries_legacy_attrib_le16);
-    if (pb) {
-        parse_legacy_attrib(s, pb);
-        wtvfile_close(pb);
-    }
-
-    /* read seek index */
-    if (s->nb_streams) {
-        AVStream *st = s->streams[0];
-        pb = wtvfile_open(s, root, root_size, table_0_entries_time_le16);
-        if (pb) {
-            while(1) {
-                uint64_t timestamp = avio_rl64(pb);
-                uint64_t frame_nb  = avio_rl64(pb);
-                if (pb->eof_reached)
-                    break;
-                ff_add_index_entry(&wtv->index_entries, &wtv->nb_index_entries, &wtv->index_entries_allocated_size,
-                                   0, timestamp, frame_nb, 0, AVINDEX_KEYFRAME);
-            }
-            wtvfile_close(pb);
-
-            if (wtv->nb_index_entries) {
-                pb = wtvfile_open(s, root, root_size, timeline_table_0_entries_Events_le16);
-                if (pb) {
-                    int i;
-                    while (1) {
-                        uint64_t frame_nb = avio_rl64(pb);
-                        uint64_t position = avio_rl64(pb);
-                        if (pb->eof_reached)
-                            break;
-                        for (i = wtv->nb_index_entries - 1; i >= 0; i--) {
-                            AVIndexEntry *e = wtv->index_entries + i;
-                            if (frame_nb > e->size)
-                                break;
-                            if (position > e->pos)
-                                e->pos = position;
-                        }
-                    }
-                    wtvfile_close(pb);
-                    st->duration = wtv->index_entries[wtv->nb_index_entries - 1].timestamp;
-                }
-            }
-        }
-    }
-
-    avio_seek(s->pb, timeline_pos, SEEK_SET);
-    return 0;
-}
-
-static int read_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    WtvContext *wtv = s->priv_data;
-    AVIOContext *pb = wtv->pb;
-    int stream_index, len, ret;
-
-    stream_index = parse_chunks(s, SEEK_TO_DATA, 0, &len);
-    if (stream_index < 0)
-        return stream_index;
-
-    ret = av_get_packet(pb, pkt, len - 32);
-    if (ret < 0)
-        return ret;
-    pkt->stream_index = stream_index;
-    pkt->pts          = wtv->pts;
-    avio_skip(pb, WTV_PAD8(len) - len);
-    return 0;
-}
-
-static int read_seek(AVFormatContext *s, int stream_index,
-                     int64_t ts, int flags)
-{
-    WtvContext *wtv = s->priv_data;
-    AVIOContext *pb = wtv->pb;
-    AVStream *st = s->streams[0];
-    int64_t ts_relative;
-    int i;
-
-    if ((flags & AVSEEK_FLAG_FRAME) || (flags & AVSEEK_FLAG_BYTE))
-        return AVERROR(ENOSYS);
-
-    /* timestamp adjustment is required because wtv->pts values are absolute,
-     * whereas AVIndexEntry->timestamp values are relative to epoch. */
-    ts_relative = ts;
-    if (wtv->epoch != AV_NOPTS_VALUE)
-        ts_relative -= wtv->epoch;
-
-    i = ff_index_search_timestamp(wtv->index_entries, wtv->nb_index_entries, ts_relative, flags);
-    if (i < 0) {
-        if (wtv->last_valid_pts == AV_NOPTS_VALUE || ts < wtv->last_valid_pts)
-            avio_seek(pb, 0, SEEK_SET);
-        else if (st->duration != AV_NOPTS_VALUE && ts_relative > st->duration && wtv->nb_index_entries)
-            avio_seek(pb, wtv->index_entries[wtv->nb_index_entries - 1].pos, SEEK_SET);
-        if (parse_chunks(s, SEEK_TO_PTS, ts, 0) < 0)
-            return AVERROR(ERANGE);
-        return 0;
-    }
-    wtv->pts = wtv->index_entries[i].timestamp;
-    if (wtv->epoch != AV_NOPTS_VALUE)
-        wtv->pts += wtv->epoch;
-    wtv->last_valid_pts = wtv->pts;
-    avio_seek(pb, wtv->index_entries[i].pos, SEEK_SET);
-    return 0;
-}
-
-static int read_close(AVFormatContext *s)
-{
-    WtvContext *wtv = s->priv_data;
-    av_free(wtv->index_entries);
-    wtvfile_close(wtv->pb);
-    return 0;
-}
-
-AVInputFormat ff_wtv_demuxer = {
-    .name           = "wtv",
-    .long_name      = NULL_IF_CONFIG_SMALL("Windows Television (WTV)"),
-    .priv_data_size = sizeof(WtvContext),
-    .read_probe     = read_probe,
-    .read_header    = read_header,
-    .read_packet    = read_packet,
-    .read_seek      = read_seek,
-    .read_close     = read_close,
-    .flags          = AVFMT_SHOW_IDS,
-};