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db8cdc73e3
mpv/libmpdemux/demuxer.c
Uoti Urpala db8cdc73e3 Update Libav API uses 
Change various code to use the latest Libav API. The libavcodec
error_recognition setting has been removed and replaced with different
semantics. I removed the "--lavdopts=er=<value>" option accordingly,
as I don't think it's widely enough used to be worth attempting to
emulate the old option semantics using the new API. A new option with
the new semantics can be added later if needed.

Libav dropped APIs that were necessary with all Libav versions
until quite recently (like setting avctx->age), and it would thus not
be possible to keep compatibility with previous Libav versions without
adding workarounds. The new APIs also had some bugs/limitations in the
recent Libav release 0.8, and it would not work fully (at least some
avcodec options would not be set correctly). Because of those issues,
this commit makes no attempt to maintain compatibility with anything
but the latest Libav git head. Hopefully the required fixes and
improvements will be included in a following Libav point release.
2012-02-01 22:46:27 +02:00

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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 <assert.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 "libavcodec/avcodec.h"
#if MP_INPUT_BUFFER_PADDING_SIZE < FF_INPUT_BUFFER_PADDING_SIZE
#error MP_INPUT_BUFFER_PADDING_SIZE is too small!
#endif
static void clear_parser(sh_common_t *sh);
// Demuxer list
extern const struct demuxer_desc demuxer_desc_edl;
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_edl,
&demuxer_desc_rawaudio,
&demuxer_desc_rawvideo,
#ifdef CONFIG_TV
&demuxer_desc_tv,
#endif
&demuxer_desc_mf,
&demuxer_desc_lavf_preferred,
&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
&demuxer_desc_lavf,
#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
};
static struct demux_packet *create_packet(size_t len)
{
if (len > 1000000000) {
mp_msg(MSGT_DEMUXER, MSGL_FATAL, "Attempt to allocate demux packet "
"over 1 GB!\n");
abort();
}
struct demux_packet *dp = malloc(sizeof(struct demux_packet));
dp->len = len;
dp->next = NULL;
dp->pts = MP_NOPTS_VALUE;
dp->duration = -1;
dp->stream_pts = MP_NOPTS_VALUE;
dp->pos = 0;
dp->flags = 0;
dp->refcount = 1;
dp->master = NULL;
dp->buffer = NULL;
dp->avpacket = NULL;
return dp;
}
struct demux_packet *new_demux_packet(size_t len)
{
struct demux_packet *dp = create_packet(len);
dp->buffer = malloc(len + MP_INPUT_BUFFER_PADDING_SIZE);
if (!dp->buffer) {
mp_msg(MSGT_DEMUXER, MSGL_FATAL, "Memory allocation failure!\n");
abort();
}
memset(dp->buffer + len, 0, 8);
return dp;
}
// data must already have suitable padding
struct demux_packet *new_demux_packet_fromdata(void *data, size_t len)
{
struct demux_packet *dp = create_packet(len);
dp->buffer = data;
return dp;
}
void resize_demux_packet(struct demux_packet *dp, size_t len)
{
if (len > 1000000000) {
mp_msg(MSGT_DEMUXER, MSGL_FATAL, "Attempt to realloc demux packet "
"over 1 GB!\n");
abort();
}
dp->buffer = realloc(dp->buffer, len + MP_INPUT_BUFFER_PADDING_SIZE);
if (!dp->buffer) {
mp_msg(MSGT_DEMUXER, MSGL_FATAL, "Memory allocation failure!\n");
abort();
}
memset(dp->buffer + len, 0, 8);
dp->len = len;
}
struct demux_packet *clone_demux_packet(struct demux_packet *pack)
{
struct demux_packet *dp = malloc(sizeof(struct demux_packet));
while (pack->master)
pack = pack->master; // find the master
memcpy(dp, pack, sizeof(struct demux_packet));
dp->next = NULL;
dp->refcount = 0;
dp->master = pack;
pack->refcount++;
return dp;
}
void free_demux_packet(struct demux_packet *dp)
{
if (dp->master == NULL) { //dp is a master packet
dp->refcount--;
if (dp->refcount == 0) {
if (dp->avpacket)
talloc_free(dp->avpacket);
else
free(dp->buffer);
free(dp);
}
return;
}
// dp is a clone:
free_demux_packet(dp->master);
free(dp);
}
static void free_demuxer_stream(struct demux_stream *ds)
{
ds_free_packs(ds);
free(ds);
}
static struct demux_stream *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;
}
const char *sh_sub_type2str(int type)
{
switch (type) {
case 't': return "text";
case 'm': return "movtext";
case 'a': return "ass";
case 'v': return "vobsub";
case 'x': return "xsub";
case 'b': return "dvb";
case 'd': return "dvb-teletext";
case 'p': return "hdmv pgs";
}
return "unknown";
}
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 {
struct sh_sub *sh = talloc_zero(demuxer, struct sh_sub);
demuxer->s_streams[id] = sh;
sh->sid = sid;
sh->opts = demuxer->opts;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SUBTITLE_ID=%d\n", sid);
}
return demuxer->s_streams[id];
}
struct sh_sub *new_sh_sub_sid_lang(struct demuxer *demuxer, int id, int sid,
const char *lang)
{
struct sh_sub *sh = new_sh_sub_sid(demuxer, id, sid);
if (lang && lang[0] && strcmp(lang, "und")) {
sh->lang = talloc_strdup(sh, lang);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SID_%d_LANG=%s\n", sid, lang);
}
return sh;
}
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);
clear_parser((sh_common_t *)sh);
talloc_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);
struct sh_audio *sh = talloc_zero(demuxer, struct sh_audio);
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);
clear_parser((sh_common_t *)sh);
talloc_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);
struct sh_video *sh = talloc_zero(demuxer, struct sh_video);
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);
clear_parser((sh_common_t *)sh);
talloc_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);
}
void ds_add_packet(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);
}
static void allocate_parser(AVCodecContext **avctx, AVCodecParserContext **parser, unsigned format)
{
enum CodecID codec_id = CODEC_ID_NONE;
switch (format) {
case MKTAG('M', 'P', '4', 'L'):
codec_id = CODEC_ID_AAC_LATM;
break;
case 0x2000:
case 0x332D6361:
case 0x332D4341:
case 0x20736D:
case MKTAG('s', 'a', 'c', '3'):
codec_id = CODEC_ID_AC3;
break;
case MKTAG('d', 'n', 'e', 't'):
// DNET/byte-swapped AC-3 - there is no parser for that yet
//codec_id = CODEC_ID_DNET;
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('f', 'L', 'a', 'C'):
codec_id = CODEC_ID_FLAC;
break;
case MKTAG('M', 'L', 'P', ' '):
codec_id = CODEC_ID_MLP;
break;
case 0x55:
case 0x5500736d:
case 0x55005354:
case MKTAG('.', 'm', 'p', '3'):
case MKTAG('M', 'P', '3', ' '):
case MKTAG('L', 'A', 'M', 'E'):
codec_id = CODEC_ID_MP3;
break;
case 0x50:
case 0x5000736d:
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_context3(NULL);
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);
}
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
int ds_fill_buffer(demux_stream_t *ds)
{
demuxer_t *demux = ds->demuxer;
if (ds->current)
free_demux_packet(ds->current);
ds->current = NULL;
mp_dbg(MSGT_DEMUXER, MSGL_DBG3, "ds_fill_buffer (%s) called\n",
ds == demux->audio ? "d_audio" : ds == demux->video ? "d_video" :
ds == demux->sub ? "d_sub" : "unknown");
while (1) {
if (ds->packs) {
demux_packet_t *p = ds->first;
// 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)) {
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 = MP_NOPTS_VALUE;
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;
}
struct demux_packet *ds_get_packet2(struct demux_stream *ds, bool repeat_last)
{
// This shouldn't get used together with partial reads
assert(ds->buffer_pos == 0 || ds->buffer_pos >= ds->buffer_size);
if (!repeat_last)
ds_fill_buffer(ds);
ds->buffer_pos = ds->buffer_size;
return ds->current;
}
double ds_get_next_pts(demux_stream_t *ds)
{
demuxer_t *demux = ds->demuxer;
// if we have not read from the "current" packet, consider it
// as the next, otherwise we never get the pts for the first packet.
while (!ds->first && (!ds->current || ds->buffer_pos)) {
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;
}
// take pts from "current" if we never read from it.
if (ds->current && !ds->buffer_pos)
return ds->current->pts;
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: 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_END) // internal type
continue;
if (demuxer_list[i]->comment && strlen(demuxer_list[i]->comment))
mp_msg(MSGT_DEMUXER, MSGL_INFO, "%10s %s (%s)\n",
demuxer_list[i]->name, demuxer_list[i]->info,
demuxer_list[i]->comment);
else
mp_msg(MSGT_DEMUXER, MSGL_INFO, "%10s %s\n",
demuxer_list[i]->name, 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
*/
static int get_demuxer_type_from_name(char *demuxer_name, int *force)
{
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 (int i = 0; demuxer_list[i]; i++) {
if (demuxer_list[i]->type >= DEMUXER_TYPE_END)
// Can't select special demuxers from commandline
continue;
if (strcmp(demuxer_name, demuxer_list[i]->name) == 0)
return demuxer_list[i]->type;
}
return -1;
}
static struct demuxer *open_given_type(struct MPOpts *opts,
const struct demuxer_desc *desc,
struct stream *stream, bool force,
int audio_id, int video_id, int sub_id,
char *filename,
struct demuxer_params *params)
{
struct demuxer *demuxer;
int fformat;
demuxer = new_demuxer(opts, stream, desc->type, audio_id,
video_id, sub_id, filename);
demuxer->params = params;
if (desc->check_file)
fformat = desc->check_file(demuxer);
else
fformat = desc->type;
if (force)
fformat = desc->type;
if (fformat == 0)
goto fail;
if (fformat == desc->type) {
if (demuxer->filetype)
mp_tmsg(MSGT_DEMUXER, MSGL_INFO, "Detected file format: %s (%s)\n",
demuxer->filetype, desc->shortdesc);
else
mp_tmsg(MSGT_DEMUXER, MSGL_INFO, "Detected file format: %s\n",
desc->shortdesc);
if (demuxer->desc->open) {
struct demuxer *demux2 = demuxer->desc->open(demuxer);
if (!demux2) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "Opening as detected format "
"\"%s\" failed.\n", desc->shortdesc);
goto fail;
}
/* At least demux_mov can return a demux_demuxers instance
* from open() instead of the original fed in. */
demuxer = demux2;
}
demuxer->file_format = fformat;
return demuxer;
} else {
// demux_mov can return playlist instead of mov
if (fformat == DEMUXER_TYPE_PLAYLIST)
return demuxer; // handled in mplayer.c
/* Internal MPEG PS demuxer check can return other MPEG subtypes
* which don't have their own checks; recurse to try opening as
* the returned type instead. */
free_demuxer(demuxer);
desc = get_demuxer_desc_from_type(fformat);
if (!desc) {
mp_msg(MSGT_DEMUXER, MSGL_ERR,
"BUG: recursion to nonexistent file format\n");
return NULL;
}
return open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
}
fail:
free_demuxer(demuxer);
return NULL;
}
static struct demuxer *demux_open_stream(struct MPOpts *opts,
struct stream *stream,
int file_format, bool force,
int audio_id, int video_id, int sub_id,
char *filename,
struct demuxer_params *params)
{
struct demuxer *demuxer = NULL;
const struct demuxer_desc *desc;
// If somebody requested a demuxer check it
if (file_format) {
desc = get_demuxer_desc_from_type(file_format);
if (!desc)
// should only happen with obsolete -demuxer 99 numeric format
return NULL;
demuxer = open_given_type(opts, desc, stream, force, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
goto dmx_open;
return NULL;
}
// Test demuxers with safe file checks
for (int i = 0; (desc = demuxer_list[i]); i++) {
if (desc->safe_check) {
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
goto dmx_open;
}
}
// 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 (filename && opts->extension_parsing == 1) {
desc = get_demuxer_desc_from_type(demuxer_type_by_filename(filename));
if (desc)
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
goto dmx_open;
}
// Finally try detection for demuxers with unsafe checks
for (int i = 0; (desc = demuxer_list[i]); i++) {
if (!desc->safe_check && desc->check_file) {
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
goto dmx_open;
}
}
return NULL;
dmx_open:
if (demuxer->type == DEMUXER_TYPE_PLAYLIST)
return demuxer;
struct sh_video *sh_video = demuxer->video->sh;
if (sh_video && 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);
}
return demuxer;
}
struct demuxer *demux_open(struct MPOpts *opts, stream_t *vs, int file_format,
int audio_id, int video_id, int sub_id,
char *filename)
{
return demux_open_withparams(opts, vs, file_format, audio_id, video_id,
sub_id, filename, NULL);
}
struct demuxer *demux_open_withparams(struct MPOpts *opts, stream_t *vs,
int file_format, int audio_id, int video_id, int dvdsub_id,
char *filename, struct demuxer_params *params)
{
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(opts->demuxer_name, &demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, "-demuxer %s does not exist.\n",
opts->demuxer_name);
return NULL;
}
if ((audio_demuxer_type =
get_demuxer_type_from_name(opts->audio_demuxer_name,
&audio_demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, "-audio-demuxer %s does not exist.\n",
opts->audio_demuxer_name);
if (opts->audio_stream)
return NULL;
}
if ((sub_demuxer_type =
get_demuxer_type_from_name(opts->sub_demuxer_name,
&sub_demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, "-sub-demuxer %s does not exist.\n",
opts->sub_demuxer_name);
if (opts->sub_stream)
return NULL;
}
if (opts->audio_stream) {
as = open_stream(opts->audio_stream, 0, &afmt);
if (!as) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "Cannot open audio stream: %s\n",
opts->audio_stream);
return NULL;
}
if (opts->audio_stream_cache) {
if (!stream_enable_cache
(as, opts->audio_stream_cache * 1024,
opts->audio_stream_cache * 1024 *
(opts->stream_cache_min_percent / 100.0),
opts->audio_stream_cache * 1024 *
(opts->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 (opts->sub_stream) {
ss = open_stream(opts->sub_stream, 0, &sfmt);
if (!ss) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "Cannot open subtitle stream: %s\n",
opts->sub_stream);
return NULL;
}
}
vd = demux_open_stream(opts, vs, demuxer_type ? demuxer_type : file_format,
demuxer_force, opts->audio_stream ? -2 : audio_id,
video_id, opts->sub_stream ? -2 : dvdsub_id,
filename, params);
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,
opts->audio_stream, params);
if (!ad) {
mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "Failed to open audio demuxer: %s\n",
opts->audio_stream);
free_stream(as);
} else if (ad->audio->sh
&& ((sh_audio_t *) ad->audio->sh)->format == 0x55) // MP3
opts->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,
opts->sub_stream, params);
if (!sd) {
mp_tmsg(MSGT_DEMUXER, MSGL_WARN,
"Failed to open subtitle demuxer: %s\n", opts->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(vd ? vd : res, DEMUXER_CTRL_CORRECT_PTS,
NULL) == DEMUXER_CTRL_OK;
return res;
}
void demux_flush(demuxer_t *demuxer)
{
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;
demuxer->sub->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;
}
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) {
struct sh_video *sh_video = demuxer->video->sh;
return sh_video ? sh_video->vid : -2;
}
if (demuxer->video->id >= 0) {
struct sh_video *sh_video = demuxer->v_streams[demuxer->video->id];
demuxer->video->sh = sh_video;
index = sh_video->vid; // internal MPEG demuxers don't set it right
} 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"));
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)
* \return -1 on error, current chapter if successful
*/
int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, double *seek_pts)
{
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;
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 / 1e9;
return chapter;
}
}
int demuxer_get_current_chapter(demuxer_t *demuxer, double time_now)
{
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 {
uint64_t now = time_now * 1e9 + 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 talloc_strdup(NULL, demuxer->chapters[chapter].name);
}
return NULL;
}
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 / 1e9;
return demuxer->chapters[chapter].start / 1e9;
}
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_and_default(struct demuxer *d, char **langt)
{
int n = 0;
while (1) {
char *lang = langt ? langt[n++] : NULL;
int id = -1;
for (int i = 0; i < MAX_A_STREAMS; i++) {
struct sh_audio *sh = d->a_streams[i];
if (sh && (!lang || sh->lang && !strcmp(lang, sh->lang))) {
if (sh->default_track)
return sh->aid;
if (id < 0)
id = sh->aid;
}
}
if (id >= 0)
return id;
if (!lang)
return -1;
}
}
int demuxer_sub_track_by_lang_and_default(struct demuxer *d, char **langt)
{
int n = 0;
while (1) {
char *lang = langt ? langt[n++] : NULL;
int id = -1;
for (int i = 0; i < MAX_S_STREAMS; i++) {
struct sh_sub *sh = d->s_streams[i];
if (sh && (!lang || sh->lang && !strcmp(lang, sh->lang))) {
if (sh->default_track)
return sh->sid;
if (id < 0)
id = sh->sid;
}
}
if (!lang)
return -1;
if (id >= 0)
return id;
}
}
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