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mpv/libmpdemux/demuxer.c
Uoti Urpala 90bedd0b87 Make audio stream index handling saner in stream switching 
The handling of audio stream numbering was handled in the stream
selection property was a total mess. The most important issue was
confusion between values used as index for demuxer->audio_streams[]
array (consistently stored in demuxer->audio->id) and values stored
in sh_audio->aid and used as "-aid N" option values. Now demuxer audio
switch control functions and demuxer_switch_audio() are supposed to
return the new value for the "-aid" option (internal MPEG demuxers
still don't; the demuxer requirement could perhaps be dropped as it
can be easily calculated afterwards). That is also the value
returned for the "switch_audio" property. The main changes are:

 - Make command.c mp_property_audio() consistently use and return the
   "-aid" values. Before it used that as input but the array index as
   output, with extra mess related to demuxer_switch_audio() return
   value. Don't modify the audio_id option field any more.

 - Make demuxer_switch_audio() always return "-aid" values (like it
   takes as input). There are two changes for this: picking this
   return value in case the demuxer doesn't support switching, and
   overriding demuxer return value (for internal MPEG demuxers).

 - Make demux_lavf return "-aid" values from DEMUXER_CTRL_SWITCH_AUDIO
   code. This isn't actually necessary because of the override part
   above.

Here's some history of the relevant behavior that I looked up:
* For most demuxers array index and "-aid" values are the same. At
  least demux_mkv, (some of?) the internal MPEG demuxers and demux_ogg
  have differed for a long time. demux_ogg doesn't matter because it
  doesn't support stream switching.
* Old code seemed to assume that demuxer_switch_audio() return value was
  array index, but this wasn't true at least for demux_mkv.
* In svn r19951 reimar mostly removed use of the return value.
* In r20162 ptt added mp_property_audio(). This set the global
  audio_id variable (-aid option value) to the return value of
  demuxer_switch_audio() and treated the global as the persistent
  value of the property, apparently assuming that it would be set to
  the "-aid" value, not array index. This was false for internal
  MPEG.
* In r30124 reimar changed the property code so that even though it
  still modified the option value it didn't use that as the value of
  the property any more; instead it incorrectly used the array index.
  This meant that for demux_mkv the return value didn't match -aid any
  more (though input still did, so setting the property and querying
  it didn't match as they used different value systems).
* In r31129 aurel made demux_lavf changes that resulted in its -aid
  and array index values no longer matching either. He didn't change
  the return value from audio switch when changing -aid, so it now
  matched array index only. The latter part didn't cause additional
  problems from r20162 though because either choice would have been
  broken anyway after r30124 as long as they weren't the same value.
2010-05-22 10:11:25 +03:00

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/*
* DEMUXER v2.5
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "config.h"
#include "options.h"
#include "talloc.h"
#include "mp_msg.h"
#include "m_config.h"
#include "libvo/fastmemcpy.h"
#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "mf.h"
#include "libaf/af_format.h"
#include "libmpcodecs/dec_teletext.h"
#include "ass_mp.h"
#ifdef CONFIG_LIBAVCODEC
#include "libavcodec/avcodec.h"
#if MP_INPUT_BUFFER_PADDING_SIZE < FF_INPUT_BUFFER_PADDING_SIZE
#error MP_INPUT_BUFFER_PADDING_SIZE is too small!
#endif
#endif
// This is quite experimental, in particular it will mess up the pts values
// in the queue - on the other hand it might fix some issues like generating
// broken files with mencoder and stream copy.
// Better leave it disabled for now, if we find no use for it this code should
// just be removed again.
#define PARSE_ON_ADD 0
static void clear_parser(sh_common_t *sh);
// Demuxer list
extern const demuxer_desc_t demuxer_desc_rawaudio;
extern const demuxer_desc_t demuxer_desc_rawvideo;
extern const demuxer_desc_t demuxer_desc_tv;
extern const demuxer_desc_t demuxer_desc_mf;
extern const demuxer_desc_t demuxer_desc_avi;
extern const demuxer_desc_t demuxer_desc_y4m;
extern const demuxer_desc_t demuxer_desc_asf;
extern const demuxer_desc_t demuxer_desc_real;
extern const demuxer_desc_t demuxer_desc_smjpeg;
extern const demuxer_desc_t demuxer_desc_matroska;
extern const demuxer_desc_t demuxer_desc_realaudio;
extern const demuxer_desc_t demuxer_desc_vqf;
extern const demuxer_desc_t demuxer_desc_mov;
extern const demuxer_desc_t demuxer_desc_vivo;
extern const demuxer_desc_t demuxer_desc_fli;
extern const demuxer_desc_t demuxer_desc_film;
extern const demuxer_desc_t demuxer_desc_roq;
extern const demuxer_desc_t demuxer_desc_gif;
extern const demuxer_desc_t demuxer_desc_ogg;
extern const demuxer_desc_t demuxer_desc_avs;
extern const demuxer_desc_t demuxer_desc_pva;
extern const demuxer_desc_t demuxer_desc_nsv;
extern const demuxer_desc_t demuxer_desc_mpeg_ts;
extern const demuxer_desc_t demuxer_desc_lmlm4;
extern const demuxer_desc_t demuxer_desc_mpeg_ps;
extern const demuxer_desc_t demuxer_desc_mpeg_pes;
extern const demuxer_desc_t demuxer_desc_mpeg_es;
extern const demuxer_desc_t demuxer_desc_mpeg_gxf;
extern const demuxer_desc_t demuxer_desc_mpeg4_es;
extern const demuxer_desc_t demuxer_desc_h264_es;
extern const demuxer_desc_t demuxer_desc_rawdv;
extern const demuxer_desc_t demuxer_desc_mpc;
extern const demuxer_desc_t demuxer_desc_audio;
extern const demuxer_desc_t demuxer_desc_xmms;
extern const demuxer_desc_t demuxer_desc_mpeg_ty;
extern const demuxer_desc_t demuxer_desc_rtp;
extern const demuxer_desc_t demuxer_desc_rtp_nemesi;
extern const demuxer_desc_t demuxer_desc_lavf;
extern const demuxer_desc_t demuxer_desc_lavf_preferred;
extern const demuxer_desc_t demuxer_desc_aac;
extern const demuxer_desc_t demuxer_desc_nut;
extern const demuxer_desc_t demuxer_desc_mng;
/* Please do not add any new demuxers here. If you want to implement a new
* demuxer, add it to libavformat, except for wrappers around external
* libraries and demuxers requiring binary support. */
const demuxer_desc_t *const demuxer_list[] = {
&demuxer_desc_rawaudio,
&demuxer_desc_rawvideo,
#ifdef CONFIG_TV
&demuxer_desc_tv,
#endif
&demuxer_desc_mf,
#ifdef CONFIG_LIBAVFORMAT
&demuxer_desc_lavf_preferred,
#endif
&demuxer_desc_avi,
&demuxer_desc_y4m,
&demuxer_desc_asf,
&demuxer_desc_nsv,
&demuxer_desc_real,
&demuxer_desc_smjpeg,
&demuxer_desc_matroska,
&demuxer_desc_realaudio,
&demuxer_desc_vqf,
&demuxer_desc_mov,
&demuxer_desc_vivo,
&demuxer_desc_fli,
&demuxer_desc_film,
&demuxer_desc_roq,
#ifdef CONFIG_GIF
&demuxer_desc_gif,
#endif
#ifdef CONFIG_OGGVORBIS
&demuxer_desc_ogg,
#endif
#ifdef CONFIG_WIN32DLL
&demuxer_desc_avs,
#endif
&demuxer_desc_pva,
&demuxer_desc_mpeg_ts,
&demuxer_desc_lmlm4,
&demuxer_desc_mpeg_ps,
&demuxer_desc_mpeg_pes,
&demuxer_desc_mpeg_es,
&demuxer_desc_mpeg_gxf,
&demuxer_desc_mpeg4_es,
&demuxer_desc_h264_es,
&demuxer_desc_audio,
&demuxer_desc_mpeg_ty,
#ifdef CONFIG_LIVE555
&demuxer_desc_rtp,
#endif
#ifdef CONFIG_LIBNEMESI
&demuxer_desc_rtp_nemesi,
#endif
#ifdef CONFIG_LIBAVFORMAT
&demuxer_desc_lavf,
#endif
#ifdef CONFIG_MUSEPACK
&demuxer_desc_mpc,
#endif
#ifdef CONFIG_LIBDV095
&demuxer_desc_rawdv,
#endif
&demuxer_desc_aac,
#ifdef CONFIG_LIBNUT
&demuxer_desc_nut,
#endif
#ifdef CONFIG_XMMS
&demuxer_desc_xmms,
#endif
#ifdef CONFIG_MNG
&demuxer_desc_mng,
#endif
/* Please do not add any new demuxers here. If you want to implement a new
* demuxer, add it to libavformat, except for wrappers around external
* libraries and demuxers requiring binary support. */
NULL
};
void free_demuxer_stream(demux_stream_t *ds)
{
ds_free_packs(ds);
free(ds);
}
demux_stream_t *new_demuxer_stream(struct demuxer *demuxer, int id)
{
demux_stream_t *ds = malloc(sizeof(demux_stream_t));
*ds = (demux_stream_t){
.id = id,
.demuxer = demuxer,
.asf_seq = -1,
};
return ds;
}
/**
* Get demuxer description structure for a given demuxer type
*
* @param file_format type of the demuxer
* @return structure for the demuxer, NULL if not found
*/
static const demuxer_desc_t *get_demuxer_desc_from_type(int file_format)
{
int i;
for (i = 0; demuxer_list[i]; i++)
if (file_format == demuxer_list[i]->type)
return demuxer_list[i];
return NULL;
}
demuxer_t *new_demuxer(struct MPOpts *opts, stream_t *stream, int type,
int a_id, int v_id, int s_id, char *filename)
{
struct demuxer *d = talloc_zero(NULL, struct demuxer);
d->stream = stream;
d->stream_pts = MP_NOPTS_VALUE;
d->reference_clock = MP_NOPTS_VALUE;
d->movi_start = stream->start_pos;
d->movi_end = stream->end_pos;
d->seekable = 1;
d->synced = 0;
d->filepos = -1;
d->audio = new_demuxer_stream(d, a_id);
d->video = new_demuxer_stream(d, v_id);
d->sub = new_demuxer_stream(d, s_id);
d->type = type;
d->opts = opts;
if (type)
if (!(d->desc = get_demuxer_desc_from_type(type)))
mp_msg(MSGT_DEMUXER, MSGL_ERR,
"BUG! Invalid demuxer type in new_demuxer(), "
"big troubles ahead.");
if (filename) // Filename hack for avs_check_file
d->filename = strdup(filename);
stream_seek(stream, stream->start_pos);
return d;
}
sh_sub_t *new_sh_sub_sid(demuxer_t *demuxer, int id, int sid)
{
if (id > MAX_S_STREAMS - 1 || id < 0) {
mp_msg(MSGT_DEMUXER, MSGL_WARN,
"Requested sub stream id overflow (%d > %d)\n", id,
MAX_S_STREAMS);
return NULL;
}
if (demuxer->s_streams[id])
mp_msg(MSGT_DEMUXER, MSGL_WARN, "Sub stream %i redefined\n", id);
else {
sh_sub_t *sh = calloc(1, sizeof(sh_sub_t));
demuxer->s_streams[id] = sh;
sh->sid = sid;
sh->opts = demuxer->opts;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SUBTITLE_ID=%d\n", sid);
}
if (sid == demuxer->opts->sub_id) {
demuxer->sub->id = id;
demuxer->sub->sh = demuxer->s_streams[id];
}
return demuxer->s_streams[id];
}
static void free_sh_sub(sh_sub_t *sh)
{
mp_msg(MSGT_DEMUXER, MSGL_DBG2, "DEMUXER: freeing sh_sub at %p\n", sh);
free(sh->extradata);
#ifdef CONFIG_ASS
if (sh->ass_track)
ass_free_track(sh->ass_track);
#endif
free(sh->lang);
#ifdef CONFIG_LIBAVCODEC
clear_parser((sh_common_t *)sh);
#endif
free(sh);
}
sh_audio_t *new_sh_audio_aid(demuxer_t *demuxer, int id, int aid)
{
if (id > MAX_A_STREAMS - 1 || id < 0) {
mp_msg(MSGT_DEMUXER, MSGL_WARN,
"Requested audio stream id overflow (%d > %d)\n", id,
MAX_A_STREAMS);
return NULL;
}
if (demuxer->a_streams[id]) {
mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "WARNING: Audio stream header %d redefined.\n", id);
} else {
mp_tmsg(MSGT_DEMUXER, MSGL_V, "==> Found audio stream: %d\n", id);
sh_audio_t *sh = calloc(1, sizeof(sh_audio_t));
demuxer->a_streams[id] = sh;
sh->aid = aid;
sh->ds = demuxer->audio;
// set some defaults
sh->samplesize = 2;
sh->sample_format = AF_FORMAT_S16_NE;
sh->opts = demuxer->opts;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AUDIO_ID=%d\n", aid);
}
return demuxer->a_streams[id];
}
void free_sh_audio(demuxer_t *demuxer, int id)
{
sh_audio_t *sh = demuxer->a_streams[id];
demuxer->a_streams[id] = NULL;
mp_msg(MSGT_DEMUXER, MSGL_DBG2, "DEMUXER: freeing sh_audio at %p\n", sh);
free(sh->wf);
free(sh->codecdata);
free(sh->lang);
#ifdef CONFIG_LIBAVCODEC
clear_parser((sh_common_t *)sh);
#endif
free(sh);
}
sh_video_t *new_sh_video_vid(demuxer_t *demuxer, int id, int vid)
{
if (id > MAX_V_STREAMS - 1 || id < 0) {
mp_msg(MSGT_DEMUXER, MSGL_WARN,
"Requested video stream id overflow (%d > %d)\n", id,
MAX_V_STREAMS);
return NULL;
}
if (demuxer->v_streams[id])
mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "WARNING: Video stream header %d redefined.\n", id);
else {
mp_tmsg(MSGT_DEMUXER, MSGL_V, "==> Found video stream: %d\n", id);
sh_video_t *sh = calloc(1, sizeof *sh);
demuxer->v_streams[id] = sh;
sh->vid = vid;
sh->ds = demuxer->video;
sh->opts = demuxer->opts;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_ID=%d\n", vid);
}
return demuxer->v_streams[id];
}
void free_sh_video(sh_video_t *sh)
{
mp_msg(MSGT_DEMUXER, MSGL_DBG2, "DEMUXER: freeing sh_video at %p\n", sh);
free(sh->bih);
#ifdef CONFIG_LIBAVCODEC
clear_parser((sh_common_t *)sh);
#endif
free(sh);
}
void free_demuxer(demuxer_t *demuxer)
{
int i;
mp_msg(MSGT_DEMUXER, MSGL_DBG2, "DEMUXER: freeing %s demuxer at %p\n",
demuxer->desc->shortdesc, demuxer);
if (demuxer->desc->close)
demuxer->desc->close(demuxer);
// Very ugly hack to make it behave like old implementation
if (demuxer->desc->type == DEMUXER_TYPE_DEMUXERS)
goto skip_streamfree;
// free streams:
for (i = 0; i < MAX_A_STREAMS; i++)
if (demuxer->a_streams[i])
free_sh_audio(demuxer, i);
for (i = 0; i < MAX_V_STREAMS; i++)
if (demuxer->v_streams[i])
free_sh_video(demuxer->v_streams[i]);
for (i = 0; i < MAX_S_STREAMS; i++)
if (demuxer->s_streams[i])
free_sh_sub(demuxer->s_streams[i]);
// free demuxers:
free_demuxer_stream(demuxer->audio);
free_demuxer_stream(demuxer->video);
free_demuxer_stream(demuxer->sub);
skip_streamfree:
free(demuxer->filename);
if (demuxer->teletext)
teletext_control(demuxer->teletext, TV_VBI_CONTROL_STOP, NULL);
talloc_free(demuxer);
}
static void ds_add_packet_internal(demux_stream_t *ds, demux_packet_t *dp)
{
// append packet to DS stream:
++ds->packs;
ds->bytes += dp->len;
if (ds->last) {
// next packet in stream
ds->last->next = dp;
ds->last = dp;
} else {
// first packet in stream
ds->first = ds->last = dp;
}
mp_dbg(MSGT_DEMUXER, MSGL_DBG2,
"DEMUX: Append packet to %s, len=%d pts=%5.3f pos=%u [packs: A=%d V=%d]\n",
(ds == ds->demuxer->audio) ? "d_audio" : "d_video", dp->len,
dp->pts, (unsigned int) dp->pos, ds->demuxer->audio->packs,
ds->demuxer->video->packs);
}
#ifdef CONFIG_LIBAVCODEC
static void allocate_parser(AVCodecContext **avctx, AVCodecParserContext **parser, unsigned format)
{
enum CodecID codec_id = CODEC_ID_NONE;
extern int avcodec_initialized;
if (!avcodec_initialized) {
avcodec_init();
avcodec_register_all();
avcodec_initialized = 1;
}
switch (format) {
case 0x2000:
case 0x332D6361:
case 0x332D4341:
case MKTAG('d', 'n', 'e', 't'):
case MKTAG('s', 'a', 'c', '3'):
codec_id = CODEC_ID_AC3;
break;
case MKTAG('E', 'A', 'C', '3'):
codec_id = CODEC_ID_EAC3;
break;
case 0x2001:
case 0x86:
codec_id = CODEC_ID_DTS;
break;
case MKTAG('M', 'L', 'P', ' '):
codec_id = CODEC_ID_MLP;
break;
case 0x55:
case 0x5500736d:
case MKTAG('.', 'm', 'p', '3'):
case MKTAG('M', 'P', 'E', ' '):
case MKTAG('L', 'A', 'M', 'E'):
codec_id = CODEC_ID_MP3;
break;
case 0x50:
case MKTAG('.', 'm', 'p', '2'):
case MKTAG('.', 'm', 'p', '1'):
codec_id = CODEC_ID_MP2;
break;
case MKTAG('T', 'R', 'H', 'D'):
codec_id = CODEC_ID_TRUEHD;
break;
}
if (codec_id != CODEC_ID_NONE) {
*avctx = avcodec_alloc_context();
if (!*avctx)
return;
*parser = av_parser_init(codec_id);
if (!*parser)
av_freep(avctx);
}
}
static void get_parser(sh_common_t *sh, AVCodecContext **avctx, AVCodecParserContext **parser)
{
*avctx = NULL;
*parser = NULL;
if (!sh || !sh->needs_parsing)
return;
*avctx = sh->avctx;
*parser = sh->parser;
if (*parser)
return;
allocate_parser(avctx, parser, sh->format);
sh->avctx = *avctx;
sh->parser = *parser;
}
int ds_parse(demux_stream_t *ds, uint8_t **buffer, int *len, double pts, off_t pos)
{
AVCodecContext *avctx;
AVCodecParserContext *parser;
get_parser(ds->sh, &avctx, &parser);
if (!parser)
return *len;
return av_parser_parse2(parser, avctx, buffer, len, *buffer, *len, pts, pts, pos);
}
static void clear_parser(sh_common_t *sh)
{
av_parser_close(sh->parser);
sh->parser = NULL;
av_freep(&sh->avctx);
}
void ds_clear_parser(demux_stream_t *ds)
{
if (!ds->sh)
return;
clear_parser(ds->sh);
}
#endif
void ds_add_packet(demux_stream_t *ds, demux_packet_t *dp)
{
#if PARSE_ON_ADD && defined(CONFIG_LIBAVCODEC)
int len = dp->len;
int pos = 0;
while (len > 0) {
uint8_t *parsed_start = dp->buffer + pos;
int parsed_len = len;
int consumed = ds_parse(ds->sh, &parsed_start, &parsed_len, dp->pts, dp->pos);
pos += consumed;
len -= consumed;
if (parsed_start == dp->buffer && parsed_len == dp->len) {
ds_add_packet_internal(ds, dp);
} else if (parsed_len) {
demux_packet_t *dp2 = new_demux_packet(parsed_len);
dp2->pos = dp->pos;
dp2->pts = dp->pts; // should be parser->pts but that works badly
memcpy(dp2->buffer, parsed_start, parsed_len);
ds_add_packet_internal(ds, dp2);
}
}
#else
ds_add_packet_internal(ds, dp);
#endif
}
void ds_read_packet(demux_stream_t *ds, stream_t *stream, int len,
double pts, off_t pos, int flags)
{
demux_packet_t *dp = new_demux_packet(len);
len = stream_read(stream, dp->buffer, len);
resize_demux_packet(dp, len);
dp->pts = pts;
dp->pos = pos;
dp->flags = flags;
// append packet to DS stream:
ds_add_packet(ds, dp);
}
// return value:
// 0 = EOF or no stream found or invalid type
// 1 = successfully read a packet
int demux_fill_buffer(demuxer_t *demux, demux_stream_t *ds)
{
// Note: parameter 'ds' can be NULL!
return demux->desc->fill_buffer(demux, ds);
}
// return value:
// 0 = EOF
// 1 = successful
#define MAX_ACUMULATED_PACKETS 64
int ds_fill_buffer(demux_stream_t *ds)
{
demuxer_t *demux = ds->demuxer;
if (ds->current)
free_demux_packet(ds->current);
ds->current = NULL;
if (mp_msg_test(MSGT_DEMUXER, MSGL_DBG3)) {
if (ds == demux->audio)
mp_dbg(MSGT_DEMUXER, MSGL_DBG3,
"ds_fill_buffer(d_audio) called\n");
else if (ds == demux->video)
mp_dbg(MSGT_DEMUXER, MSGL_DBG3,
"ds_fill_buffer(d_video) called\n");
else if (ds == demux->sub)
mp_dbg(MSGT_DEMUXER, MSGL_DBG3, "ds_fill_buffer(d_sub) called\n");
else
mp_dbg(MSGT_DEMUXER, MSGL_DBG3,
"ds_fill_buffer(unknown 0x%X) called\n", (unsigned int) ds);
}
while (1) {
if (ds->packs) {
demux_packet_t *p = ds->first;
#if 0
if (demux->reference_clock != MP_NOPTS_VALUE) {
if ( p->pts != MP_NOPTS_VALUE
&& p->pts > demux->reference_clock
&& ds->packs < MAX_ACUMULATED_PACKETS) {
if (demux_fill_buffer(demux, ds))
continue;
}
}
#endif
// copy useful data:
ds->buffer = p->buffer;
ds->buffer_pos = 0;
ds->buffer_size = p->len;
ds->pos = p->pos;
ds->dpos += p->len; // !!!
++ds->pack_no;
if (p->pts != MP_NOPTS_VALUE) {
ds->pts = p->pts;
ds->pts_bytes = 0;
}
ds->pts_bytes += p->len; // !!!
if (p->stream_pts != MP_NOPTS_VALUE)
demux->stream_pts = p->stream_pts;
ds->flags = p->flags;
// unlink packet:
ds->bytes -= p->len;
ds->current = p;
ds->first = p->next;
if (!ds->first)
ds->last = NULL;
--ds->packs;
/* The code below can set ds->eof to 1 when another stream runs
* out of buffer space. That makes sense because in that situation
* the calling code should not count on being able to demux more
* packets from this stream.
* If however the situation improves and we're called again
* despite the eof flag then it's better to clear it to avoid
* weird behavior. */
ds->eof = 0;
return 1;
}
#define MaybeNI _("Maybe you are playing a non-interleaved stream/file or the codec failed?\n" \
"For AVI files, try to force non-interleaved mode with the -ni option.\n")
if (demux->audio->packs >= MAX_PACKS
|| demux->audio->bytes >= MAX_PACK_BYTES) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many audio packets in the buffer: (%d in %d bytes).\n",
demux->audio->packs, demux->audio->bytes);
mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
break;
}
if (demux->video->packs >= MAX_PACKS
|| demux->video->bytes >= MAX_PACK_BYTES) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many video packets in the buffer: (%d in %d bytes).\n",
demux->video->packs, demux->video->bytes);
mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
break;
}
if (!demux_fill_buffer(demux, ds)) {
#if PARSE_ON_ADD && defined(CONFIG_LIBAVCODEC)
uint8_t *parsed_start = NULL;
int parsed_len = 0;
ds_parse(ds->sh, &parsed_start, &parsed_len, MP_NOPTS_VALUE, 0);
if (parsed_len) {
demux_packet_t *dp2 = new_demux_packet(parsed_len);
dp2->pts = MP_NOPTS_VALUE;
memcpy(dp2->buffer, parsed_start, parsed_len);
ds_add_packet_internal(ds, dp2);
continue;
}
#endif
mp_dbg(MSGT_DEMUXER, MSGL_DBG2,
"ds_fill_buffer()->demux_fill_buffer() failed\n");
break; // EOF
}
}
ds->buffer_pos = ds->buffer_size = 0;
ds->buffer = NULL;
mp_msg(MSGT_DEMUXER, MSGL_V,
"ds_fill_buffer: EOF reached (stream: %s) \n",
ds == demux->audio ? "audio" : "video");
ds->eof = 1;
return 0;
}
int demux_read_data(demux_stream_t *ds, unsigned char *mem, int len)
{
int x;
int bytes = 0;
while (len > 0) {
x = ds->buffer_size - ds->buffer_pos;
if (x == 0) {
if (!ds_fill_buffer(ds))
return bytes;
} else {
if (x > len)
x = len;
if (mem)
fast_memcpy(mem + bytes, &ds->buffer[ds->buffer_pos], x);
bytes += x;
len -= x;
ds->buffer_pos += x;
}
}
return bytes;
}
/**
* \brief read data until the given 3-byte pattern is encountered, up to maxlen
* \param mem memory to read data into, may be NULL to discard data
* \param maxlen maximum number of bytes to read
* \param read number of bytes actually read
* \param pattern pattern to search for (lowest 8 bits are ignored)
* \return whether pattern was found
*/
int demux_pattern_3(demux_stream_t *ds, unsigned char *mem, int maxlen,
int *read, uint32_t pattern)
{
register uint32_t head = 0xffffff00;
register uint32_t pat = pattern & 0xffffff00;
int total_len = 0;
do {
register unsigned char *ds_buf = &ds->buffer[ds->buffer_size];
int len = ds->buffer_size - ds->buffer_pos;
register long pos = -len;
if (unlikely(pos >= 0)) { // buffer is empty
ds_fill_buffer(ds);
continue;
}
do {
head |= ds_buf[pos];
head <<= 8;
} while (++pos && head != pat);
len += pos;
if (total_len + len > maxlen)
len = maxlen - total_len;
len = demux_read_data(ds, mem ? &mem[total_len] : NULL, len);
total_len += len;
} while ((head != pat || total_len < 3) && total_len < maxlen && !ds->eof);
if (read)
*read = total_len;
return total_len >= 3 && head == pat;
}
void ds_free_packs(demux_stream_t *ds)
{
demux_packet_t *dp = ds->first;
while (dp) {
demux_packet_t *dn = dp->next;
free_demux_packet(dp);
dp = dn;
}
if (ds->asf_packet) {
// free unfinished .asf fragments:
free(ds->asf_packet->buffer);
free(ds->asf_packet);
ds->asf_packet = NULL;
}
ds->first = ds->last = NULL;
ds->packs = 0; // !!!!!
ds->bytes = 0;
if (ds->current)
free_demux_packet(ds->current);
ds->current = NULL;
ds->buffer = NULL;
ds->buffer_pos = ds->buffer_size;
ds->pts = 0;
ds->pts_bytes = 0;
}
int ds_get_packet(demux_stream_t *ds, unsigned char **start)
{
int len;
if (ds->buffer_pos >= ds->buffer_size) {
if (!ds_fill_buffer(ds)) {
// EOF
*start = NULL;
return -1;
}
}
len = ds->buffer_size - ds->buffer_pos;
*start = &ds->buffer[ds->buffer_pos];
ds->buffer_pos += len;
return len;
}
int ds_get_packet_pts(demux_stream_t *ds, unsigned char **start, double *pts)
{
int len;
*pts = MP_NOPTS_VALUE;
len = ds_get_packet(ds, start);
if (len < 0)
return len;
// Return pts unless this read starts from the middle of a packet
if (len == ds->buffer_pos)
*pts = ds->current->pts;
return len;
}
int ds_get_packet_sub(demux_stream_t *ds, unsigned char **start)
{
int len;
if (ds->buffer_pos >= ds->buffer_size) {
*start = NULL;
if (!ds->packs)
return -1; // no sub
if (!ds_fill_buffer(ds))
return -1; // EOF
}
len = ds->buffer_size - ds->buffer_pos;
*start = &ds->buffer[ds->buffer_pos];
ds->buffer_pos += len;
return len;
}
double ds_get_next_pts(demux_stream_t *ds)
{
demuxer_t *demux = ds->demuxer;
while (!ds->first) {
if (demux->audio->packs >= MAX_PACKS
|| demux->audio->bytes >= MAX_PACK_BYTES) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many audio packets in the buffer: (%d in %d bytes).\n",
demux->audio->packs, demux->audio->bytes);
mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
return MP_NOPTS_VALUE;
}
if (demux->video->packs >= MAX_PACKS
|| demux->video->bytes >= MAX_PACK_BYTES) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many video packets in the buffer: (%d in %d bytes).\n",
demux->video->packs, demux->video->bytes);
mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
return MP_NOPTS_VALUE;
}
if (!demux_fill_buffer(demux, ds))
return MP_NOPTS_VALUE;
}
return ds->first->pts;
}
// ====================================================================
void demuxer_help(void)
{
int i;
mp_msg(MSGT_DEMUXER, MSGL_INFO, "Available demuxers:\n");
mp_msg(MSGT_DEMUXER, MSGL_INFO, " demuxer: type info: (comment)\n");
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_DEMUXERS\n");
for (i = 0; demuxer_list[i]; i++) {
if (demuxer_list[i]->type > DEMUXER_TYPE_MAX) // Don't display special demuxers
continue;
if (demuxer_list[i]->comment && strlen(demuxer_list[i]->comment))
mp_msg(MSGT_DEMUXER, MSGL_INFO, "%10s %2d %s (%s)\n",
demuxer_list[i]->name, demuxer_list[i]->type,
demuxer_list[i]->info, demuxer_list[i]->comment);
else
mp_msg(MSGT_DEMUXER, MSGL_INFO, "%10s %2d %s\n",
demuxer_list[i]->name, demuxer_list[i]->type,
demuxer_list[i]->info);
}
}
/**
* Get demuxer type for a given demuxer name
*
* @param demuxer_name string with demuxer name of demuxer number
* @param force will be set if demuxer should be forced.
* May be NULL.
* @return DEMUXER_TYPE_xxx, -1 if error or not found
*/
int get_demuxer_type_from_name(char *demuxer_name, int *force)
{
int i;
long type_int;
char *endptr;
if (!demuxer_name || !demuxer_name[0])
return DEMUXER_TYPE_UNKNOWN;
if (force)
*force = demuxer_name[0] == '+';
if (demuxer_name[0] == '+')
demuxer_name = &demuxer_name[1];
for (i = 0; demuxer_list[i]; i++) {
if (demuxer_list[i]->type > DEMUXER_TYPE_MAX) // Can't select special demuxers from commandline
continue;
if (strcmp(demuxer_name, demuxer_list[i]->name) == 0)
return demuxer_list[i]->type;
}
// No match found, try to parse name as an integer (demuxer number)
type_int = strtol(demuxer_name, &endptr, 0);
if (*endptr) // Conversion failed
return -1;
if ((type_int > 0) && (type_int <= DEMUXER_TYPE_MAX))
return (int) type_int;
return -1;
}
int extension_parsing = 1; // 0=off 1=mixed (used only for unstable formats)
/*
NOTE : Several demuxers may be opened at the same time so
demuxers should NEVER rely on an external var to enable them
self. If a demuxer can't do any auto-detection it should only use
file_format. The user can explicitly set file_format with the -demuxer
option so there is really no need for another extra var.
For convenience an option can be added to set file_format directly
to the right type (ex: rawaudio,rawvideo).
Also the stream can override the file_format so a demuxer which rely
on a special stream type can set file_format at the stream level
(ex: tv,mf).
*/
static demuxer_t *demux_open_stream(struct MPOpts *opts, stream_t *stream,
int file_format, int force, int audio_id,
int video_id, int dvdsub_id,
char *filename)
{
demuxer_t *demuxer = NULL;
sh_video_t *sh_video = NULL;
const demuxer_desc_t *demuxer_desc;
int fformat = 0;
int i;
// If somebody requested a demuxer check it
if (file_format) {
if ((demuxer_desc = get_demuxer_desc_from_type(file_format))) {
demuxer = new_demuxer(opts, stream, demuxer_desc->type, audio_id,
video_id, dvdsub_id, filename);
if (demuxer_desc->check_file)
fformat = demuxer_desc->check_file(demuxer);
if (force || !demuxer_desc->check_file)
fformat = demuxer_desc->type;
if (fformat != 0) {
if (fformat == demuxer_desc->type) {
demuxer_t *demux2 = demuxer;
// Move messages to demuxer detection code?
mp_tmsg(MSGT_DEMUXER, MSGL_INFO,
"%s file format detected.\n",
demuxer_desc->shortdesc);
file_format = fformat;
if (!demuxer->desc->open
|| (demux2 = demuxer->desc->open(demuxer))) {
demuxer = demux2;
goto dmx_open;
}
} else {
// Format changed after check, recurse
free_demuxer(demuxer);
return demux_open_stream(opts, stream, fformat, force,
audio_id, video_id, dvdsub_id,
filename);
}
}
// Check failed for forced demuxer, quit
free_demuxer(demuxer);
return NULL;
}
}
// Test demuxers with safe file checks
for (i = 0; (demuxer_desc = demuxer_list[i]); i++) {
if (demuxer_desc->safe_check) {
demuxer = new_demuxer(opts, stream, demuxer_desc->type, audio_id,
video_id, dvdsub_id, filename);
if ((fformat = demuxer_desc->check_file(demuxer)) != 0) {
if (fformat == demuxer_desc->type) {
demuxer_t *demux2 = demuxer;
mp_tmsg(MSGT_DEMUXER, MSGL_INFO,
"%s file format detected.\n",
demuxer_desc->shortdesc);
file_format = fformat;
if (!demuxer->desc->open
|| (demux2 = demuxer->desc->open(demuxer))) {
demuxer = demux2;
goto dmx_open;
}
} else {
if (fformat == DEMUXER_TYPE_PLAYLIST)
return demuxer; // handled in mplayer.c
// Format changed after check, recurse
free_demuxer(demuxer);
demuxer = demux_open_stream(opts, stream, fformat, force,
audio_id, video_id,
dvdsub_id, filename);
if (demuxer)
return demuxer; // done!
file_format = DEMUXER_TYPE_UNKNOWN;
}
}
free_demuxer(demuxer);
demuxer = NULL;
}
}
// If no forced demuxer perform file extension based detection
// Ok. We're over the stable detectable fileformats, the next ones are
// a bit fuzzy. So by default (extension_parsing==1) try extension-based
// detection first:
if (file_format == DEMUXER_TYPE_UNKNOWN && filename
&& extension_parsing == 1) {
file_format = demuxer_type_by_filename(filename);
if (file_format != DEMUXER_TYPE_UNKNOWN) {
// we like recursion :)
demuxer = demux_open_stream(opts, stream, file_format, force,
audio_id, video_id, dvdsub_id,
filename);
if (demuxer)
return demuxer; // done!
file_format = DEMUXER_TYPE_UNKNOWN; // continue fuzzy guessing...
mp_msg(MSGT_DEMUXER, MSGL_V,
"demuxer: continue fuzzy content-based format guessing...\n");
}
}
// Try detection for all other demuxers
for (i = 0; (demuxer_desc = demuxer_list[i]); i++) {
if (!demuxer_desc->safe_check && demuxer_desc->check_file) {
demuxer = new_demuxer(opts, stream, demuxer_desc->type, audio_id,
video_id, dvdsub_id, filename);
if ((fformat = demuxer_desc->check_file(demuxer)) != 0) {
if (fformat == demuxer_desc->type) {
demuxer_t *demux2 = demuxer;
mp_tmsg(MSGT_DEMUXER, MSGL_INFO,
"%s file format detected.\n",
demuxer_desc->shortdesc);
file_format = fformat;
if (!demuxer->desc->open
|| (demux2 = demuxer->desc->open(demuxer))) {
demuxer = demux2;
goto dmx_open;
}
} else {
if (fformat == DEMUXER_TYPE_PLAYLIST)
return demuxer; // handled in mplayer.c
// Format changed after check, recurse
free_demuxer(demuxer);
demuxer = demux_open_stream(opts, stream, fformat, force,
audio_id, video_id,
dvdsub_id, filename);
if (demuxer)
return demuxer; // done!
file_format = DEMUXER_TYPE_UNKNOWN;
}
}
free_demuxer(demuxer);
demuxer = NULL;
}
}
return NULL;
//====== File format recognized, set up these for compatibility: =========
dmx_open:
demuxer->file_format = file_format;
if ((sh_video = demuxer->video->sh) && sh_video->bih) {
int biComp = le2me_32(sh_video->bih->biCompression);
mp_msg(MSGT_DEMUX, MSGL_INFO,
"VIDEO: [%.4s] %dx%d %dbpp %5.3f fps %5.1f kbps (%4.1f kbyte/s)\n",
(char *) &biComp, sh_video->bih->biWidth,
sh_video->bih->biHeight, sh_video->bih->biBitCount,
sh_video->fps, sh_video->i_bps * 0.008f,
sh_video->i_bps / 1024.0f);
}
#ifdef CONFIG_ASS
if (opts->ass_enabled && ass_library) {
for (i = 0; i < MAX_S_STREAMS; ++i) {
sh_sub_t *sh = demuxer->s_streams[i];
if (sh && sh->type == 'a') {
sh->ass_track = ass_new_track(ass_library);
if (sh->ass_track && sh->extradata)
ass_process_codec_private(sh->ass_track, sh->extradata,
sh->extradata_len);
} else if (sh && sh->type != 'v')
sh->ass_track = ass_default_track(ass_library);
}
}
#endif
return demuxer;
}
char *audio_stream = NULL;
char *sub_stream = NULL;
int audio_stream_cache = 0;
char *demuxer_name = NULL; // parameter from -demuxer
char *audio_demuxer_name = NULL; // parameter from -audio-demuxer
char *sub_demuxer_name = NULL; // parameter from -sub-demuxer
extern int hr_mp3_seek;
extern float stream_cache_min_percent;
extern float stream_cache_seek_min_percent;
demuxer_t *demux_open(struct MPOpts *opts, stream_t *vs, int file_format,
int audio_id, int video_id, int dvdsub_id,
char *filename)
{
stream_t *as = NULL, *ss = NULL;
demuxer_t *vd, *ad = NULL, *sd = NULL;
demuxer_t *res;
int afmt = DEMUXER_TYPE_UNKNOWN, sfmt = DEMUXER_TYPE_UNKNOWN;
int demuxer_type;
int audio_demuxer_type = 0, sub_demuxer_type = 0;
int demuxer_force = 0, audio_demuxer_force = 0, sub_demuxer_force = 0;
if ((demuxer_type =
get_demuxer_type_from_name(demuxer_name, &demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, "-demuxer %s does not exist.\n",
demuxer_name);
}
if ((audio_demuxer_type =
get_demuxer_type_from_name(audio_demuxer_name,
&audio_demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, "-audio-demuxer %s does not exist.\n",
audio_demuxer_name);
}
if ((sub_demuxer_type =
get_demuxer_type_from_name(sub_demuxer_name,
&sub_demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, "-sub-demuxer %s does not exist.\n",
sub_demuxer_name);
}
if (audio_stream) {
as = open_stream(audio_stream, 0, &afmt);
if (!as) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "Cannot open audio stream: %s\n",
audio_stream);
return NULL;
}
if (audio_stream_cache) {
if (!stream_enable_cache
(as, audio_stream_cache * 1024,
audio_stream_cache * 1024 * (stream_cache_min_percent /
100.0),
audio_stream_cache * 1024 * (stream_cache_seek_min_percent /
100.0))) {
free_stream(as);
mp_msg(MSGT_DEMUXER, MSGL_ERR,
"Can't enable audio stream cache\n");
return NULL;
}
}
}
if (sub_stream) {
ss = open_stream(sub_stream, 0, &sfmt);
if (!ss) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "Cannot open subtitle stream: %s\n",
sub_stream);
return NULL;
}
}
vd = demux_open_stream(opts, vs, demuxer_type ? demuxer_type : file_format,
demuxer_force, audio_stream ? -2 : audio_id,
video_id, sub_stream ? -2 : dvdsub_id, filename);
if (!vd) {
if (as)
free_stream(as);
if (ss)
free_stream(ss);
return NULL;
}
if (as) {
ad = demux_open_stream(opts, as,
audio_demuxer_type ? audio_demuxer_type : afmt,
audio_demuxer_force, audio_id, -2, -2,
audio_stream);
if (!ad) {
mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "Failed to open audio demuxer: %s\n",
audio_stream);
free_stream(as);
} else if (ad->audio->sh
&& ((sh_audio_t *) ad->audio->sh)->format == 0x55) // MP3
hr_mp3_seek = 1; // Enable high res seeking
}
if (ss) {
sd = demux_open_stream(opts, ss,
sub_demuxer_type ? sub_demuxer_type : sfmt,
sub_demuxer_force, -2, -2, dvdsub_id,
sub_stream);
if (!sd) {
mp_tmsg(MSGT_DEMUXER, MSGL_WARN,
"Failed to open subtitle demuxer: %s\n", sub_stream);
free_stream(ss);
}
}
if (ad && sd)
res = new_demuxers_demuxer(vd, ad, sd);
else if (ad)
res = new_demuxers_demuxer(vd, ad, vd);
else if (sd)
res = new_demuxers_demuxer(vd, vd, sd);
else
res = vd;
opts->correct_pts = opts->user_correct_pts;
if (opts->correct_pts < 0)
opts->correct_pts =
demux_control(res, DEMUXER_CTRL_CORRECT_PTS,
NULL) == DEMUXER_CTRL_OK;
return res;
}
void demux_flush(demuxer_t *demuxer)
{
#if PARSE_ON_ADD
ds_clear_parser(demuxer->video);
ds_clear_parser(demuxer->audio);
ds_clear_parser(demuxer->sub);
#endif
ds_free_packs(demuxer->video);
ds_free_packs(demuxer->audio);
ds_free_packs(demuxer->sub);
}
int demux_seek(demuxer_t *demuxer, float rel_seek_secs, float audio_delay,
int flags)
{
if (!demuxer->seekable) {
if (demuxer->file_format == DEMUXER_TYPE_AVI)
mp_tmsg(MSGT_SEEK, MSGL_WARN, "Cannot seek in raw AVI streams. (Index required, try with the -idx switch.)\n");
#ifdef CONFIG_TV
else if (demuxer->file_format == DEMUXER_TYPE_TV)
mp_tmsg(MSGT_SEEK, MSGL_WARN, "TV input is not seekable! (Seeking will probably be for changing channels ;)\n");
#endif
else
mp_tmsg(MSGT_SEEK, MSGL_WARN, "Cannot seek in this file.\n");
return 0;
}
// clear demux buffers:
demux_flush(demuxer);
demuxer->video->eof = 0;
demuxer->audio->eof = 0;
/* HACK: assume any demuxer used with these streams can cope with
* the stream layer suddenly seeking to a different position under it
* (nothing actually implements DEMUXER_CTRL_RESYNC now).
*/
struct stream *stream = demuxer->stream;
if (stream->type == STREAMTYPE_DVD || stream->type == STREAMTYPE_DVDNAV) {
double pts;
if (flags & SEEK_ABSOLUTE)
pts = 0.0f;
else {
if (demuxer->stream_pts == MP_NOPTS_VALUE)
goto dmx_seek;
pts = demuxer->stream_pts;
}
if (flags & SEEK_FACTOR) {
double tmp = 0;
if (stream_control(demuxer->stream, STREAM_CTRL_GET_TIME_LENGTH,
&tmp) == STREAM_UNSUPPORTED)
goto dmx_seek;
pts += tmp * rel_seek_secs;
} else
pts += rel_seek_secs;
if (stream_control(demuxer->stream, STREAM_CTRL_SEEK_TO_TIME, &pts)
!= STREAM_UNSUPPORTED) {
demux_control(demuxer, DEMUXER_CTRL_RESYNC, NULL);
return 1;
}
}
dmx_seek:
if (demuxer->desc->seek)
demuxer->desc->seek(demuxer, rel_seek_secs, audio_delay, flags);
return 1;
}
int demux_info_add(demuxer_t *demuxer, const char *opt, const char *param)
{
return demux_info_add_bstr(demuxer, BSTR(opt), BSTR(param));
}
int demux_info_add_bstr(demuxer_t *demuxer, struct bstr opt, struct bstr param)
{
char **info = demuxer->info;
int n = 0;
for (n = 0; info && info[2 * n] != NULL; n++) {
if (!bstrcasecmp(opt, BSTR(info[2*n]))) {
if (!bstrcmp(param, BSTR(info[2*n + 1]))) {
mp_msg(MSGT_DEMUX, MSGL_V, "Demuxer info %.*s set to unchanged value %.*s\n",
BSTR_P(opt), BSTR_P(param));
return 0;
}
mp_tmsg(MSGT_DEMUX, MSGL_INFO, "Demuxer info %.*s changed to %.*s\n",
BSTR_P(opt), BSTR_P(param));
talloc_free(info[2*n + 1]);
info[2*n + 1] = talloc_strndup(demuxer->info, param.start, param.len);
return 0;
}
}
info = demuxer->info = talloc_realloc(demuxer, info, char *, 2 * (n + 2));
info[2*n] = talloc_strndup(demuxer->info, opt.start, opt.len);
info[2*n + 1] = talloc_strndup(demuxer->info, param.start, param.len);
memset(&info[2 * (n + 1)], 0, 2 * sizeof(char *));
return 1;
}
int demux_info_print(demuxer_t *demuxer)
{
char **info = demuxer->info;
int n;
if (!info)
return 0;
mp_tmsg(MSGT_DEMUX, MSGL_INFO, "Clip info:\n");
for (n = 0; info[2 * n] != NULL; n++) {
mp_msg(MSGT_DEMUX, MSGL_INFO, " %s: %s\n", info[2 * n],
info[2 * n + 1]);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_NAME%d=%s\n", n,
info[2 * n]);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_VALUE%d=%s\n", n,
info[2 * n + 1]);
}
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_N=%d\n", n);
return 0;
}
char *demux_info_get(demuxer_t *demuxer, const char *opt)
{
int i;
char **info = demuxer->info;
for (i = 0; info && info[2 * i] != NULL; i++) {
if (!strcasecmp(opt, info[2 * i]))
return info[2 * i + 1];
}
return NULL;
}
int demux_control(demuxer_t *demuxer, int cmd, void *arg)
{
if (demuxer->desc->control)
return demuxer->desc->control(demuxer, cmd, arg);
return DEMUXER_CTRL_NOTIMPL;
}
double demuxer_get_time_length(demuxer_t *demuxer)
{
double get_time_ans;
sh_video_t *sh_video = demuxer->video->sh;
sh_audio_t *sh_audio = demuxer->audio->sh;
// <= 0 means DEMUXER_CTRL_NOTIMPL or DEMUXER_CTRL_DONTKNOW
if (demux_control
(demuxer, DEMUXER_CTRL_GET_TIME_LENGTH, (void *) &get_time_ans) <= 0) {
if (sh_video && sh_video->i_bps && sh_audio && sh_audio->i_bps)
get_time_ans = (double) (demuxer->movi_end -
demuxer->movi_start) / (sh_video->i_bps +
sh_audio->i_bps);
else if (sh_video && sh_video->i_bps)
get_time_ans = (double) (demuxer->movi_end -
demuxer->movi_start) / sh_video->i_bps;
else if (sh_audio && sh_audio->i_bps)
get_time_ans = (double) (demuxer->movi_end -
demuxer->movi_start) / sh_audio->i_bps;
else
get_time_ans = 0;
}
return get_time_ans;
}
/**
* \brief demuxer_get_current_time() returns the time of the current play in three possible ways:
* either when the stream reader satisfies STREAM_CTRL_GET_CURRENT_TIME (e.g. dvd)
* or using sh_video->pts when the former method fails
* 0 otherwise
* \return the current play time
*/
int demuxer_get_current_time(demuxer_t *demuxer)
{
double get_time_ans = 0;
sh_video_t *sh_video = demuxer->video->sh;
if (demuxer->stream_pts != MP_NOPTS_VALUE)
get_time_ans = demuxer->stream_pts;
else if (sh_video)
get_time_ans = sh_video->pts;
return (int) get_time_ans;
}
int demuxer_get_percent_pos(demuxer_t *demuxer)
{
int ans = 0;
int res = demux_control(demuxer, DEMUXER_CTRL_GET_PERCENT_POS, &ans);
int len = (demuxer->movi_end - demuxer->movi_start) / 100;
if (res <= 0) {
off_t pos = demuxer->filepos > 0 ? demuxer->filepos : stream_tell(demuxer->stream);
if (len > 0)
ans = (pos - demuxer->movi_start) / len;
else
ans = 0;
}
if (ans < 0)
ans = 0;
if (ans > 100)
ans = 100;
return ans;
}
int demuxer_switch_audio(demuxer_t *demuxer, int index)
{
int res = demux_control(demuxer, DEMUXER_CTRL_SWITCH_AUDIO, &index);
if (res == DEMUXER_CTRL_NOTIMPL) {
struct sh_audio *sh_audio = demuxer->audio->sh;
return sh_audio ? sh_audio->aid : -2;
}
if (demuxer->audio->id >= 0) {
struct sh_audio *sh_audio = demuxer->a_streams[demuxer->audio->id];
demuxer->audio->sh = sh_audio;
index = sh_audio->aid; // internal MPEG demuxers don't set it right
}
else
demuxer->audio->sh = NULL;
return index;
}
int demuxer_switch_video(demuxer_t *demuxer, int index)
{
int res = demux_control(demuxer, DEMUXER_CTRL_SWITCH_VIDEO, &index);
if (res == DEMUXER_CTRL_NOTIMPL)
index = demuxer->video->id;
if (demuxer->video->id >= 0)
demuxer->video->sh = demuxer->v_streams[demuxer->video->id];
else
demuxer->video->sh = NULL;
return index;
}
int demuxer_add_attachment(demuxer_t *demuxer, struct bstr name,
struct bstr type, struct bstr data)
{
if (!(demuxer->num_attachments % 32))
demuxer->attachments = talloc_realloc(demuxer, demuxer->attachments,
struct demux_attachment,
demuxer->num_attachments + 32);
struct demux_attachment *att =
demuxer->attachments + demuxer->num_attachments;
att->name = talloc_strndup(demuxer->attachments, name.start, name.len);
att->type = talloc_strndup(demuxer->attachments, type.start, type.len);
att->data = talloc_size(demuxer->attachments, data.len);
memcpy(att->data, data.start, data.len);
att->data_size = data.len;
return demuxer->num_attachments++;
}
int demuxer_add_chapter(demuxer_t *demuxer, struct bstr name,
uint64_t start, uint64_t end)
{
if (!(demuxer->num_chapters % 32))
demuxer->chapters = talloc_realloc(demuxer, demuxer->chapters,
struct demux_chapter,
demuxer->num_chapters + 32);
demuxer->chapters[demuxer->num_chapters].start = start;
demuxer->chapters[demuxer->num_chapters].end = end;
demuxer->chapters[demuxer->num_chapters].name = name.len ?
talloc_strndup(demuxer->chapters, name.start, name.len) :
talloc_strdup(demuxer->chapters, mp_gtext("unknown"));
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_ID=%d\n", demuxer->num_chapters);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_START=%"PRIu64"\n", demuxer->num_chapters, start);
if (end)
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_END=%"PRIu64"\n", demuxer->num_chapters, end);
if (name.start)
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_NAME=%.*s\n", demuxer->num_chapters, BSTR_P(name));
return demuxer->num_chapters++;
}
/**
* \brief demuxer_seek_chapter() seeks to a chapter in two possible ways:
* either using the demuxer->chapters structure set by the demuxer
* or asking help to the stream layer (e.g. dvd)
* \param chapter - chapter number wished - 0-based
* \param seek_pts set by the function to the pts to seek to (if demuxer->chapters is set)
* \param chapter_name name of chapter found (set by this function is param is not null)
* \return -1 on error, current chapter if successful
*/
int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, double *seek_pts,
char **chapter_name)
{
int ris;
if (!demuxer->num_chapters || !demuxer->chapters) {
demux_flush(demuxer);
ris = stream_control(demuxer->stream, STREAM_CTRL_SEEK_TO_CHAPTER,
&chapter);
if (ris != STREAM_UNSUPPORTED)
demux_control(demuxer, DEMUXER_CTRL_RESYNC, NULL);
// exit status may be ok, but main() doesn't have to seek itself
// (because e.g. dvds depend on sectors, not on pts)
*seek_pts = -1.0;
if (chapter_name) {
*chapter_name = NULL;
int num_chapters;
if (stream_control(demuxer->stream, STREAM_CTRL_GET_NUM_CHAPTERS,
&num_chapters) == STREAM_UNSUPPORTED)
num_chapters = 0;
if (num_chapters) {
*chapter_name = talloc_size(NULL, 16);
sprintf(*chapter_name, " of %3d", num_chapters);
}
}
return ris != STREAM_UNSUPPORTED ? chapter : -1;
} else { // chapters structure is set in the demuxer
if (chapter >= demuxer->num_chapters)
return -1;
if (chapter < 0)
chapter = 0;
*seek_pts = demuxer->chapters[chapter].start / 1000.0;
if (chapter_name)
*chapter_name = talloc_strdup(NULL, demuxer->chapters[chapter].name);
return chapter;
}
}
int demuxer_get_current_chapter(demuxer_t *demuxer)
{
int chapter = -2;
if (!demuxer->num_chapters || !demuxer->chapters) {
if (stream_control(demuxer->stream, STREAM_CTRL_GET_CURRENT_CHAPTER,
&chapter) == STREAM_UNSUPPORTED)
chapter = -2;
} else {
sh_video_t *sh_video = demuxer->video->sh;
sh_audio_t *sh_audio = demuxer->audio->sh;
uint64_t now;
now = (sh_video ? sh_video->pts : (sh_audio ? sh_audio->pts : 0))
* 1000 + 0.5;
for (chapter = demuxer->num_chapters - 1; chapter >= 0; --chapter) {
if (demuxer->chapters[chapter].start <= now)
break;
}
}
return chapter;
}
char *demuxer_chapter_name(demuxer_t *demuxer, int chapter)
{
if (demuxer->num_chapters && demuxer->chapters) {
if (chapter >= 0 && chapter < demuxer->num_chapters
&& demuxer->chapters[chapter].name)
return strdup(demuxer->chapters[chapter].name);
}
return NULL;
}
char *demuxer_chapter_display_name(demuxer_t *demuxer, int chapter)
{
char *chapter_name = demuxer_chapter_name(demuxer, chapter);
if (chapter_name) {
char *tmp = malloc(strlen(chapter_name) + 14);
snprintf(tmp, 63, "(%d) %s", chapter + 1, chapter_name);
free(chapter_name);
return tmp;
} else {
int chapter_num = demuxer_chapter_count(demuxer);
char tmp[30];
if (chapter_num <= 0)
sprintf(tmp, "(%d)", chapter + 1);
else
sprintf(tmp, "(%d) of %d", chapter + 1, chapter_num);
return strdup(tmp);
}
}
float demuxer_chapter_time(demuxer_t *demuxer, int chapter, float *end)
{
if (demuxer->num_chapters && demuxer->chapters && chapter >= 0
&& chapter < demuxer->num_chapters) {
if (end)
*end = demuxer->chapters[chapter].end / 1000.0;
return demuxer->chapters[chapter].start / 1000.0;
}
return -1.0;
}
int demuxer_chapter_count(demuxer_t *demuxer)
{
if (!demuxer->num_chapters || !demuxer->chapters) {
int num_chapters = 0;
if (stream_control(demuxer->stream, STREAM_CTRL_GET_NUM_CHAPTERS,
&num_chapters) == STREAM_UNSUPPORTED)
num_chapters = 0;
return num_chapters;
} else
return demuxer->num_chapters;
}
int demuxer_angles_count(demuxer_t *demuxer)
{
int ris, angles = -1;
ris = stream_control(demuxer->stream, STREAM_CTRL_GET_NUM_ANGLES, &angles);
if (ris == STREAM_UNSUPPORTED)
return -1;
return angles;
}
int demuxer_get_current_angle(demuxer_t *demuxer)
{
int ris, curr_angle = -1;
ris = stream_control(demuxer->stream, STREAM_CTRL_GET_ANGLE, &curr_angle);
if (ris == STREAM_UNSUPPORTED)
return -1;
return curr_angle;
}
int demuxer_set_angle(demuxer_t *demuxer, int angle)
{
int ris, angles = -1;
angles = demuxer_angles_count(demuxer);
if ((angles < 1) || (angle > angles))
return -1;
demux_flush(demuxer);
ris = stream_control(demuxer->stream, STREAM_CTRL_SET_ANGLE, &angle);
if (ris == STREAM_UNSUPPORTED)
return -1;
demux_control(demuxer, DEMUXER_CTRL_RESYNC, NULL);
return angle;
}
int demuxer_audio_track_by_lang(demuxer_t *d, char *lang)
{
int i, len;
lang += strspn(lang, ",");
while ((len = strcspn(lang, ",")) > 0) {
for (i = 0; i < MAX_A_STREAMS; ++i) {
sh_audio_t *sh = d->a_streams[i];
if (sh && sh->lang && strncmp(sh->lang, lang, len) == 0)
return sh->aid;
}
lang += len;
lang += strspn(lang, ",");
}
return -1;
}
int demuxer_sub_track_by_lang(demuxer_t *d, char *lang)
{
int i, len;
lang += strspn(lang, ",");
while ((len = strcspn(lang, ",")) > 0) {
for (i = 0; i < MAX_S_STREAMS; ++i) {
sh_sub_t *sh = d->s_streams[i];
if (sh && sh->lang && strncmp(sh->lang, lang, len) == 0)
return sh->sid;
}
lang += len;
lang += strspn(lang, ",");
}
return -1;
}
int demuxer_default_audio_track(demuxer_t *d)
{
int i;
for (i = 0; i < MAX_A_STREAMS; ++i) {
sh_audio_t *sh = d->a_streams[i];
if (sh && sh->default_track)
return sh->aid;
}
for (i = 0; i < MAX_A_STREAMS; ++i) {
sh_audio_t *sh = d->a_streams[i];
if (sh)
return sh->aid;
}
return -1;
}
int demuxer_default_sub_track(demuxer_t *d)
{
int i;
for (i = 0; i < MAX_S_STREAMS; ++i) {
sh_sub_t *sh = d->s_streams[i];
if (sh && sh->default_track)
return sh->sid;
}
return -1;
}
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