forked from pigoz/mplayer-svn
/
demuxer.c
1955 lines (1786 loc) · 62.4 KB
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demuxer.c
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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 "mp_msg.h"
#include "help_mp.h"
#include "m_config.h"
#include "mpcommon.h"
#include "libvo/fastmemcpy.h"
#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "mf.h"
#include "demux_audio.h"
#include "libaf/af_format.h"
#include "libmpcodecs/dec_audio.h"
#include "libmpcodecs/dec_video.h"
#include "libmpcodecs/dec_teletext.h"
#include "sub/ass_mp.h"
#ifdef CONFIG_FFMPEG
#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
#include "av_helpers.h"
#endif
#include "libavutil/avstring.h"
// 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_FFMPEG
&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_FFMPEG
&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 *alloc_demuxer(stream_t *stream, int type, const char *filename)
{
demuxer_t *d = calloc(1, sizeof(*d));
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->type = type;
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);
return d;
}
demuxer_t *new_demuxer(stream_t *stream, int type, int a_id, int v_id,
int s_id, char *filename)
{
demuxer_t *d = alloc_demuxer(stream, type, filename);
d->audio = new_demuxer_stream(d, a_id);
d->video = new_demuxer_stream(d, v_id);
d->sub = new_demuxer_stream(d, s_id);
stream->eof = 0;
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, const char *lang)
{
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;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SUBTITLE_ID=%d\n", sid);
if (lang && lang[0] && strcmp(lang, "und")) {
sh->lang = strdup(lang);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SID_%d_LANG=%s\n", sid, lang);
}
if (sid == dvdsub_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_FFMPEG
clear_parser((sh_common_t *)sh);
#endif
free(sh);
}
sh_audio_t *new_sh_audio_aid(demuxer_t *demuxer, int id, int aid, const char *lang)
{
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_msg(MSGT_DEMUXER, MSGL_WARN, MSGTR_AudioStreamRedefined, id);
else {
sh_audio_t *sh = calloc(1, sizeof(sh_audio_t));
mp_msg(MSGT_DEMUXER, MSGL_V, "==> Found audio stream: %d\n", id);
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->audio_out_minsize = 8192; /* default size, maybe not enough for Win32/ACM */
sh->pts = MP_NOPTS_VALUE;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AUDIO_ID=%d\n", aid);
if (lang && lang[0] && strcmp(lang, "und")) {
sh->lang = strdup(lang);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AID_%d_LANG=%s\n", aid, lang);
}
if (aid == audio_id) {
demuxer->audio->id = id;
demuxer->audio->sh = demuxer->a_streams[id];
}
}
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_FFMPEG
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_msg(MSGT_DEMUXER, MSGL_WARN, MSGTR_VideoStreamRedefined, id);
else {
sh_video_t *sh = calloc(1, sizeof(sh_video_t));
mp_msg(MSGT_DEMUXER, MSGL_V, "==> Found video stream: %d\n", id);
demuxer->v_streams[id] = sh;
sh->vid = vid;
sh->ds = demuxer->video;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_ID=%d\n", vid);
if (vid == video_id) {
demuxer->video->id = id;
demuxer->video->sh = demuxer->v_streams[id];
}
}
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_FFMPEG
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:
if (demuxer->info) {
for (i = 0; demuxer->info[i] != NULL; i++)
free(demuxer->info[i]);
free(demuxer->info);
}
free(demuxer->filename);
if (demuxer->chapters) {
for (i = 0; i < demuxer->num_chapters; i++)
free(demuxer->chapters[i].name);
free(demuxer->chapters);
}
if (demuxer->attachments) {
for (i = 0; i < demuxer->num_attachments; i++) {
free(demuxer->attachments[i].name);
free(demuxer->attachments[i].type);
free(demuxer->attachments[i].data);
}
free(demuxer->attachments);
}
if (demuxer->teletext)
teletext_control(demuxer->teletext, TV_VBI_CONTROL_STOP, NULL);
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_FFMPEG
static void allocate_parser(AVCodecContext **avctx, AVCodecParserContext **parser, unsigned format)
{
enum CodecID codec_id = CODEC_ID_NONE;
init_avcodec();
switch (format) {
case 0x1600:
case MKTAG('M', 'P', '4', 'A'):
codec_id = CODEC_ID_AAC;
break;
case 0x1602:
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:
case MKTAG('D', 'T', 'S', ' '):
case MKTAG('d', 't', 's', ' '):
case MKTAG('d', 't', 's', 'b'):
case MKTAG('d', 't', 's', 'c'):
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);
}
#endif
void ds_add_packet(demux_stream_t *ds, demux_packet_t *dp)
{
#if PARSE_ON_ADD && defined(CONFIG_FFMPEG)
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);
if (!dp2) return;
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);
if (!dp) return;
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_ACCUMULATED_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;
// obviously not yet EOF after all
ds->eof = 0;
#if 0
if (demux->reference_clock != MP_NOPTS_VALUE) {
if ( p->pts != MP_NOPTS_VALUE
&& p->pts > demux->reference_clock
&& ds->packs < MAX_ACCUMULATED_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;
return 1;
}
// avoid printing the "too many ..." message over and over
if (ds->eof)
break;
if (demux->audio->packs >= MAX_PACKS
|| demux->audio->bytes >= MAX_PACK_BYTES) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, MSGTR_TooManyAudioInBuffer,
demux->audio->packs, demux->audio->bytes);
mp_msg(MSGT_DEMUXER, MSGL_HINT, MSGTR_MaybeNI);
break;
}
if (demux->video->packs >= MAX_PACKS
|| demux->video->bytes >= MAX_PACK_BYTES) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, MSGTR_TooManyVideoInBuffer,
demux->video->packs, demux->video->bytes);
mp_msg(MSGT_DEMUXER, MSGL_HINT, MSGTR_MaybeNI);
break;
}
if (!demux_fill_buffer(demux, ds)) {
#if PARSE_ON_ADD && defined(CONFIG_FFMPEG)
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);
if (!dp2) continue;
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;
}
/**
* Get a subtitle packet. In particular avoid reading the stream.
* \param pts input: maximum pts value of subtitle packet. NOPTS or NULL for any.
* output: start/reference pts of subtitle
* May be NULL.
* \param endpts output: pts for end of display time. May be NULL.
* \return -1 if no packet is available
*/
int ds_get_packet_sub(demux_stream_t *ds, unsigned char **start,
double *pts, double *endpts)
{
double max_pts = MP_NOPTS_VALUE;
int len;
*start = NULL;
// initialize pts
if (pts) {
max_pts = *pts;
*pts = MP_NOPTS_VALUE;
}
if (endpts)
*endpts = MP_NOPTS_VALUE;
if (ds->buffer_pos >= ds->buffer_size) {
if (!ds->packs)
return -1; // no sub
if (!ds_fill_buffer(ds))
return -1; // EOF
}
// only start of buffer has valid pts
if (ds->buffer_pos == 0) {
if (endpts)
*endpts = ds->current->endpts;
if (pts) {
*pts = ds->current->pts;
// check if we are too early
if (*pts != MP_NOPTS_VALUE && max_pts != MP_NOPTS_VALUE &&
*pts > max_pts)
return -1;
}
}
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;
// 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_msg(MSGT_DEMUXER, MSGL_ERR, MSGTR_TooManyAudioInBuffer,
demux->audio->packs, demux->audio->bytes);
mp_msg(MSGT_DEMUXER, MSGL_HINT, MSGTR_MaybeNI);
return MP_NOPTS_VALUE;
}
if (demux->video->packs >= MAX_PACKS
|| demux->video->bytes >= MAX_PACK_BYTES) {
mp_msg(MSGT_DEMUXER, MSGL_ERR, MSGTR_TooManyVideoInBuffer,
demux->video->packs, demux->video->bytes);
mp_msg(MSGT_DEMUXER, MSGL_HINT, MSGTR_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: 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)
int correct_pts = 0;
int user_correct_pts = -1;
/*
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