/*****************************************************************************
* mp4.c: mp4/mov muxer
*****************************************************************************
* Copyright (C) 2001, 2002, 2003, 2006 VLC authors and VideoLAN
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin at videolan dot org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_sout.h>
#include <vlc_block.h>
#include <time.h>
#include <vlc_iso_lang.h>
#include <vlc_meta.h>
#include "../demux/mpeg/mpeg_parser_helpers.h"
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define FASTSTART_TEXT N_("Create \"Fast Start\" files")
#define FASTSTART_LONGTEXT N_(\
"Create \"Fast Start\" files. " \
"\"Fast Start\" files are optimized for downloads and allow the user " \
"to start previewing the file while it is downloading.")
static int Open (vlc_object_t *);
static void Close (vlc_object_t *);
#define SOUT_CFG_PREFIX "sout-mp4-"
vlc_module_begin ()
set_description(N_("MP4/MOV muxer"))
set_category(CAT_SOUT)
set_subcategory(SUBCAT_SOUT_MUX)
set_shortname("MP4")
add_bool(SOUT_CFG_PREFIX "faststart", true,
FASTSTART_TEXT, FASTSTART_LONGTEXT,
true)
set_capability("sout mux", 5)
add_shortcut("mp4", "mov", "3gp")
set_callbacks(Open, Close)
vlc_module_end ()
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
static const char *const ppsz_sout_options[] = {
"faststart", NULL
};
static int Control(sout_mux_t *, int, va_list);
static int AddStream(sout_mux_t *, sout_input_t *);
static int DelStream(sout_mux_t *, sout_input_t *);
static int Mux (sout_mux_t *);
/*****************************************************************************
* Local prototypes
*****************************************************************************/
typedef struct
{
uint64_t i_pos;
int i_size;
mtime_t i_pts_dts;
mtime_t i_length;
unsigned int i_flags;
} mp4_entry_t;
typedef struct
{
es_format_t fmt;
int i_track_id;
/* index */
unsigned int i_entry_count;
unsigned int i_entry_max;
mp4_entry_t *entry;
int64_t i_length_neg;
/* stats */
int64_t i_dts_start;
int64_t i_duration;
bool b_hasbframes;
/* for later stco fix-up (fast start files) */
uint64_t i_stco_pos;
bool b_stco64;
/* for spu */
int64_t i_last_dts;
} mp4_stream_t;
struct sout_mux_sys_t
{
bool b_mov;
bool b_3gp;
bool b_64_ext;
bool b_fast_start;
uint64_t i_mdat_pos;
uint64_t i_pos;
int64_t i_dts_start;
int i_nb_streams;
mp4_stream_t **pp_streams;
};
typedef struct bo_t
{
block_t *b;
size_t len;
} bo_t;
static void bo_init (bo_t *);
static void bo_add_8 (bo_t *, uint8_t);
static void bo_add_16be (bo_t *, uint16_t);
static void bo_add_24be (bo_t *, uint32_t);
static void bo_add_32be (bo_t *, uint32_t);
static void bo_add_64be (bo_t *, uint64_t);
static void bo_add_fourcc(bo_t *, const char *);
static void bo_add_mem (bo_t *, int , uint8_t *);
static void bo_add_descr(bo_t *, uint8_t , uint32_t);
static void bo_fix_32be (bo_t *, int , uint32_t);
static bo_t *box_new (const char *fcc);
static bo_t *box_full_new(const char *fcc, uint8_t v, uint32_t f);
static void box_fix (bo_t *box);
static void box_gather (bo_t *box, bo_t *box2);
static void box_send(sout_mux_t *p_mux, bo_t *box);
static bo_t *GetMoovBox(sout_mux_t *p_mux);
static block_t *ConvertSUBT(block_t *);
static block_t *ConvertFromAnnexB(block_t *);
static const char avc1_start_code[4] = { 0, 0, 0, 1 };
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open(vlc_object_t *p_this)
{
sout_mux_t *p_mux = (sout_mux_t*)p_this;
sout_mux_sys_t *p_sys;
bo_t *box;
msg_Dbg(p_mux, "Mp4 muxer opened");
config_ChainParse(p_mux, SOUT_CFG_PREFIX, ppsz_sout_options, p_mux->p_cfg);
p_mux->pf_control = Control;
p_mux->pf_addstream = AddStream;
p_mux->pf_delstream = DelStream;
p_mux->pf_mux = Mux;
p_mux->p_sys = p_sys = malloc(sizeof(sout_mux_sys_t));
if (!p_sys)
return VLC_ENOMEM;
p_sys->i_pos = 0;
p_sys->i_nb_streams = 0;
p_sys->pp_streams = NULL;
p_sys->i_mdat_pos = 0;
p_sys->b_mov = p_mux->psz_mux && !strcmp(p_mux->psz_mux, "mov");
p_sys->b_3gp = p_mux->psz_mux && !strcmp(p_mux->psz_mux, "3gp");
p_sys->i_dts_start = 0;
if (!p_sys->b_mov) {
/* Now add ftyp header */
box = box_new("ftyp");
if (p_sys->b_3gp)
bo_add_fourcc(box, "3gp6");
else
bo_add_fourcc(box, "isom");
bo_add_32be (box, 0);
if (p_sys->b_3gp)
bo_add_fourcc(box, "3gp4");
else
bo_add_fourcc(box, "mp41");
bo_add_fourcc(box, "avc1");
bo_add_fourcc(box, "qt ");
box_fix(box);
p_sys->i_pos += box->len;
p_sys->i_mdat_pos = p_sys->i_pos;
box_send(p_mux, box);
}
/* FIXME FIXME
* Quicktime actually doesn't like the 64 bits extensions !!! */
p_sys->b_64_ext = false;
/* Now add mdat header */
box = box_new("mdat");
bo_add_64be (box, 0); // enough to store an extended size
p_sys->i_pos += box->len;
box_send(p_mux, box);
return VLC_SUCCESS;
}
/*****************************************************************************
* Close:
*****************************************************************************/
static void Close(vlc_object_t *p_this)
{
sout_mux_t *p_mux = (sout_mux_t*)p_this;
sout_mux_sys_t *p_sys = p_mux->p_sys;
msg_Dbg(p_mux, "Close");
/* Update mdat size */
bo_t bo;
bo_init(&bo);
if (p_sys->i_pos - p_sys->i_mdat_pos >= (((uint64_t)1)<<32)) {
/* Extended size */
bo_add_32be (&bo, 1);
bo_add_fourcc(&bo, "mdat");
bo_add_64be (&bo, p_sys->i_pos - p_sys->i_mdat_pos);
} else {
bo_add_32be (&bo, 8);
bo_add_fourcc(&bo, "wide");
bo_add_32be (&bo, p_sys->i_pos - p_sys->i_mdat_pos - 8);
bo_add_fourcc(&bo, "mdat");
}
bo.b->i_buffer = bo.len;
sout_AccessOutSeek(p_mux->p_access, p_sys->i_mdat_pos);
sout_AccessOutWrite(p_mux->p_access, bo.b);
/* Create MOOV header */
uint64_t i_moov_pos = p_sys->i_pos;
bo_t *moov = GetMoovBox(p_mux);
/* Check we need to create "fast start" files */
p_sys->b_fast_start = var_GetBool(p_this, SOUT_CFG_PREFIX "faststart");
while (p_sys->b_fast_start) {
/* Move data to the end of the file so we can fit the moov header
* at the start */
int64_t i_size = p_sys->i_pos - p_sys->i_mdat_pos;
int i_moov_size = moov->len;
while (i_size > 0) {
int64_t i_chunk = __MIN(32768, i_size);
block_t *p_buf = block_Alloc(i_chunk);
sout_AccessOutSeek(p_mux->p_access,
p_sys->i_mdat_pos + i_size - i_chunk);
if (sout_AccessOutRead(p_mux->p_access, p_buf) < i_chunk) {
msg_Warn(p_this, "read() not supported by access output, "
"won't create a fast start file");
p_sys->b_fast_start = false;
block_Release(p_buf);
break;
}
sout_AccessOutSeek(p_mux->p_access, p_sys->i_mdat_pos + i_size +
i_moov_size - i_chunk);
sout_AccessOutWrite(p_mux->p_access, p_buf);
i_size -= i_chunk;
}
if (!p_sys->b_fast_start)
break;
/* Fix-up samples to chunks table in MOOV header */
for (int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++) {
mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
moov->len = p_stream->i_stco_pos;
for (unsigned i = 0; i < p_stream->i_entry_count; ) {
mp4_entry_t *entry = p_stream->entry;
if (p_stream->b_stco64)
bo_add_64be(moov, entry[i].i_pos + i_moov_size);
else
bo_add_32be(moov, entry[i].i_pos + i_moov_size);
for (; i < p_stream->i_entry_count; i++)
if (i >= p_stream->i_entry_count - 1 ||
entry[i].i_pos + entry[i].i_size != entry[i+1].i_pos) {
i++;
break;
}
}
}
moov->len = i_moov_size;
i_moov_pos = p_sys->i_mdat_pos;
p_sys->b_fast_start = false;
}
/* Write MOOV header */
sout_AccessOutSeek(p_mux->p_access, i_moov_pos);
box_send(p_mux, moov);
/* Clean-up */
for (int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++) {
mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
es_format_Clean(&p_stream->fmt);
free(p_stream->entry);
free(p_stream);
}
if (p_sys->i_nb_streams)
free(p_sys->pp_streams);
free(p_sys);
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control(sout_mux_t *p_mux, int i_query, va_list args)
{
VLC_UNUSED(p_mux);
bool *pb_bool;
switch(i_query)
{
case MUX_CAN_ADD_STREAM_WHILE_MUXING:
pb_bool = (bool*)va_arg(args, bool *);
*pb_bool = false;
return VLC_SUCCESS;
case MUX_GET_ADD_STREAM_WAIT:
pb_bool = (bool*)va_arg(args, bool *);
*pb_bool = true;
return VLC_SUCCESS;
case MUX_GET_MIME: /* Not needed, as not streamable */
default:
return VLC_EGENERIC;
}
}
/*****************************************************************************
* AddStream:
*****************************************************************************/
static int AddStream(sout_mux_t *p_mux, sout_input_t *p_input)
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
mp4_stream_t *p_stream;
switch(p_input->p_fmt->i_codec)
{
case VLC_CODEC_MP4A:
case VLC_CODEC_MP4V:
case VLC_CODEC_MPGA:
case VLC_CODEC_MPGV:
case VLC_CODEC_MP2V:
case VLC_CODEC_MP1V:
case VLC_CODEC_MJPG:
case VLC_CODEC_MJPGB:
case VLC_CODEC_SVQ1:
case VLC_CODEC_SVQ3:
case VLC_CODEC_H263:
case VLC_CODEC_H264:
case VLC_CODEC_HEVC:
case VLC_CODEC_AMR_NB:
case VLC_CODEC_AMR_WB:
case VLC_CODEC_YV12:
case VLC_CODEC_YUYV:
break;
case VLC_CODEC_SUBT:
msg_Warn(p_mux, "subtitle track added like in .mov (even when creating .mp4)");
break;
default:
msg_Err(p_mux, "unsupported codec %4.4s in mp4",
(char*)&p_input->p_fmt->i_codec);
return VLC_EGENERIC;
}
p_stream = malloc(sizeof(mp4_stream_t));
if (!p_stream)
return VLC_ENOMEM;
es_format_Copy(&p_stream->fmt, p_input->p_fmt);
p_stream->i_track_id = p_sys->i_nb_streams + 1;
p_stream->i_length_neg = 0;
p_stream->i_entry_count = 0;
p_stream->i_entry_max = 1000;
p_stream->entry =
calloc(p_stream->i_entry_max, sizeof(mp4_entry_t));
p_stream->i_dts_start = 0;
p_stream->i_duration = 0;
p_stream->b_hasbframes = false;
p_input->p_sys = p_stream;
msg_Dbg(p_mux, "adding input");
TAB_APPEND(p_sys->i_nb_streams, p_sys->pp_streams, p_stream);
return VLC_SUCCESS;
}
/*****************************************************************************
* DelStream:
*****************************************************************************/
static int DelStream(sout_mux_t *p_mux, sout_input_t *p_input)
{
VLC_UNUSED(p_input);
msg_Dbg(p_mux, "removing input");
return VLC_SUCCESS;
}
/*****************************************************************************
* Mux:
*****************************************************************************/
static int Mux(sout_mux_t *p_mux)
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
for (;;) {
int i_stream = sout_MuxGetStream(p_mux, 2, NULL);
if (i_stream < 0)
return(VLC_SUCCESS);
sout_input_t *p_input = p_mux->pp_inputs[i_stream];
mp4_stream_t *p_stream = (mp4_stream_t*)p_input->p_sys;
block_t *p_data;
do {
p_data = block_FifoGet(p_input->p_fifo);
if (p_stream->fmt.i_codec == VLC_CODEC_H264 ||
p_stream->fmt.i_codec == VLC_CODEC_HEVC)
p_data = ConvertFromAnnexB(p_data);
else if (p_stream->fmt.i_codec == VLC_CODEC_SUBT)
p_data = ConvertSUBT(p_data);
} while (!p_data);
if (p_stream->fmt.i_cat != SPU_ES) {
/* Fix length of the sample */
if (block_FifoCount(p_input->p_fifo) > 0) {
block_t *p_next = block_FifoShow(p_input->p_fifo);
int64_t i_diff = p_next->i_dts - p_data->i_dts;
if (i_diff < CLOCK_FREQ) /* protection */
p_data->i_length = i_diff;
}
if (p_data->i_length <= 0) {
msg_Warn(p_mux, "i_length <= 0");
p_stream->i_length_neg += p_data->i_length - 1;
p_data->i_length = 1;
} else if (p_stream->i_length_neg < 0) {
int64_t i_recover = __MIN(p_data->i_length / 4, - p_stream->i_length_neg);
p_data->i_length -= i_recover;
p_stream->i_length_neg += i_recover;
}
}
/* Save starting time */
if (p_stream->i_entry_count == 0) {
p_stream->i_dts_start = p_data->i_dts;
/* Update global dts_start */
if (p_sys->i_dts_start <= 0 || p_stream->i_dts_start < p_sys->i_dts_start)
p_sys->i_dts_start = p_stream->i_dts_start;
}
if (p_stream->fmt.i_cat == SPU_ES && p_stream->i_entry_count > 0) {
int64_t i_length = p_data->i_dts - p_stream->i_last_dts;
if (i_length <= 0) /* FIXME handle this broken case */
i_length = 1;
/* Fix last entry */
if (p_stream->entry[p_stream->i_entry_count-1].i_length <= 0)
p_stream->entry[p_stream->i_entry_count-1].i_length = i_length;
}
/* add index entry */
mp4_entry_t *e = &p_stream->entry[p_stream->i_entry_count];
e->i_pos = p_sys->i_pos;
e->i_size = p_data->i_buffer;
if ( p_data->i_dts > VLC_TS_INVALID && p_data->i_pts > p_data->i_dts )
{
e->i_pts_dts = p_data->i_pts - p_data->i_dts;
if ( !p_stream->b_hasbframes )
p_stream->b_hasbframes = true;
}
else e->i_pts_dts = 0;
e->i_length = p_data->i_length;
e->i_flags = p_data->i_flags;
p_stream->i_entry_count++;
/* XXX: -1 to always have 2 entry for easy adding of empty SPU */
if (p_stream->i_entry_count >= p_stream->i_entry_max - 1) {
p_stream->i_entry_max += 1000;
p_stream->entry = xrealloc(p_stream->entry,
p_stream->i_entry_max * sizeof(mp4_entry_t));
}
/* update */
p_stream->i_duration = p_stream->i_last_dts - p_stream->i_dts_start + p_data->i_length;
p_sys->i_pos += p_data->i_buffer;
/* Save the DTS */
p_stream->i_last_dts = p_data->i_dts;
/* write data */
sout_AccessOutWrite(p_mux->p_access, p_data);
if (p_stream->fmt.i_cat == SPU_ES) {
int64_t i_length = p_stream->entry[p_stream->i_entry_count-1].i_length;
if ( i_length != 0 && (p_data = block_Alloc(3)) ) {
/* TODO */
msg_Dbg(p_mux, "writing an empty sub") ;
/* Append a idx entry */
mp4_entry_t *e = &p_stream->entry[p_stream->i_entry_count];
e->i_pos = p_sys->i_pos;
e->i_size = 3;
e->i_pts_dts= 0;
e->i_length = 0;
e->i_flags = 0;
/* XXX: No need to grow the entry here */
p_stream->i_entry_count++;
/* Fix last dts */
p_stream->i_last_dts += i_length;
/* Write a " " */
p_data->p_buffer[0] = 0;
p_data->p_buffer[1] = 1;
p_data->p_buffer[2] = ' ';
p_sys->i_pos += p_data->i_buffer;
sout_AccessOutWrite(p_mux->p_access, p_data);
}
/* Fix duration */
p_stream->i_duration = p_stream->i_last_dts - p_stream->i_dts_start;
}
}
return(VLC_SUCCESS);
}
/*****************************************************************************
*
*****************************************************************************/
static block_t *ConvertSUBT(block_t *p_block)
{
p_block = block_Realloc(p_block, 2, p_block->i_buffer);
/* No trailling '\0' */
if (p_block->i_buffer > 2 && p_block->p_buffer[p_block->i_buffer-1] == '\0')
p_block->i_buffer--;
p_block->p_buffer[0] = ((p_block->i_buffer - 2) >> 8)&0xff;
p_block->p_buffer[1] = ((p_block->i_buffer - 2) )&0xff;
return p_block;
}
static block_t *ConvertFromAnnexB(block_t *p_block)
{
uint8_t *last = p_block->p_buffer; /* Assume it starts with 0x00000001 */
uint8_t *dat = &p_block->p_buffer[4];
uint8_t *end = &p_block->p_buffer[p_block->i_buffer];
/* Replace the 4 bytes start code with 4 bytes size,
* FIXME are all startcodes 4 bytes ? (I don't think :(*/
while (dat < end) {
while (dat < end - 4) {
if (!memcmp(dat, avc1_start_code, 4))
break;
dat++;
}
if (dat >= end - 4)
dat = end;
/* Fix size */
int i_size = dat - &last[4];
last[0] = (i_size >> 24)&0xff;
last[1] = (i_size >> 16)&0xff;
last[2] = (i_size >> 8)&0xff;
last[3] = (i_size )&0xff;
/* Skip blocks with SPS/PPS */
//if ((last[4]&0x1f) == 7 || (last[4]&0x1f) == 8)
// ; // FIXME Find a way to skip dat without frelling everything
last = dat;
dat += 4;
}
return p_block;
}
static bo_t *GetESDS(mp4_stream_t *p_stream)
{
bo_t *esds;
int64_t i_bitrate_avg = 0;
int64_t i_bitrate_max = 0;
/* Compute avg/max bitrate */
for (unsigned i = 0; i < p_stream->i_entry_count; i++) {
i_bitrate_avg += p_stream->entry[i].i_size;
if (p_stream->entry[i].i_length > 0) {
int64_t i_bitrate = INT64_C(8000000) * p_stream->entry[i].i_size / p_stream->entry[i].i_length;
if (i_bitrate > i_bitrate_max)
i_bitrate_max = i_bitrate;
}
}
if (p_stream->i_duration > 0)
i_bitrate_avg = INT64_C(8000000) * i_bitrate_avg / p_stream->i_duration;
else
i_bitrate_avg = 0;
if (i_bitrate_max <= 1)
i_bitrate_max = 0x7fffffff;
/* */
int i_decoder_specific_info_size = (p_stream->fmt.i_extra > 0) ? 5 + p_stream->fmt.i_extra : 0;
esds = box_full_new("esds", 0, 0);
/* ES_Descr */
bo_add_descr(esds, 0x03, 3 + 5 + 13 + i_decoder_specific_info_size + 5 + 1);
bo_add_16be(esds, p_stream->i_track_id);
bo_add_8 (esds, 0x1f); // flags=0|streamPriority=0x1f
/* DecoderConfigDescr */
bo_add_descr(esds, 0x04, 13 + i_decoder_specific_info_size);
int i_object_type_indication;
switch(p_stream->fmt.i_codec)
{
case VLC_CODEC_MP4V:
i_object_type_indication = 0x20;
break;
case VLC_CODEC_MP2V:
/* MPEG-I=0x6b, MPEG-II = 0x60 -> 0x65 */
i_object_type_indication = 0x65;
break;
case VLC_CODEC_MP1V:
/* MPEG-I=0x6b, MPEG-II = 0x60 -> 0x65 */
i_object_type_indication = 0x6b;
break;
case VLC_CODEC_MP4A:
/* FIXME for mpeg2-aac == 0x66->0x68 */
i_object_type_indication = 0x40;
break;
case VLC_CODEC_MPGA:
i_object_type_indication =
p_stream->fmt.audio.i_rate < 32000 ? 0x69 : 0x6b;
break;
default:
i_object_type_indication = 0x00;
break;
}
int i_stream_type = p_stream->fmt.i_cat == VIDEO_ES ? 0x04 : 0x05;
bo_add_8 (esds, i_object_type_indication);
bo_add_8 (esds, (i_stream_type << 2) | 1);
bo_add_24be(esds, 1024 * 1024); // bufferSizeDB
bo_add_32be(esds, i_bitrate_max); // maxBitrate
bo_add_32be(esds, i_bitrate_avg); // avgBitrate
if (p_stream->fmt.i_extra > 0) {
/* DecoderSpecificInfo */
bo_add_descr(esds, 0x05, p_stream->fmt.i_extra);
for (int i = 0; i < p_stream->fmt.i_extra; i++)
bo_add_8(esds, ((uint8_t*)p_stream->fmt.p_extra)[i]);
}
/* SL_Descr mandatory */
bo_add_descr(esds, 0x06, 1);
bo_add_8 (esds, 0x02); // sl_predefined
return esds;
}
static bo_t *GetWaveTag(mp4_stream_t *p_stream)
{
bo_t *wave;
bo_t *box;
wave = box_new("wave");
box = box_new("frma");
bo_add_fourcc(box, "mp4a");
box_gather(wave, box);
box = box_new("mp4a");
bo_add_32be(box, 0);
box_gather(wave, box);
box = GetESDS(p_stream);
box_gather(wave, box);
box = box_new("srcq");
bo_add_32be(box, 0x40);
box_gather(wave, box);
/* wazza ? */
bo_add_32be(wave, 8); /* new empty box */
bo_add_32be(wave, 0); /* box label */
return wave;
}
static bo_t *GetDamrTag(mp4_stream_t *p_stream)
{
bo_t *damr;
damr = box_new("damr");
bo_add_fourcc(damr, "REFC");
bo_add_8(damr, 0);
if (p_stream->fmt.i_codec == VLC_CODEC_AMR_NB)
bo_add_16be(damr, 0x81ff); /* Mode set (all modes for AMR_NB) */
else
bo_add_16be(damr, 0x83ff); /* Mode set (all modes for AMR_WB) */
bo_add_16be(damr, 0x1); /* Mode change period (no restriction) */
return damr;
}
static bo_t *GetD263Tag(void)
{
bo_t *d263;
d263 = box_new("d263");
bo_add_fourcc(d263, "VLC ");
bo_add_16be(d263, 0xa);
bo_add_8(d263, 0);
return d263;
}
static void hevcParseVPS(uint8_t * p_buffer, size_t i_buffer, uint8_t *general,
uint8_t * numTemporalLayer, bool * temporalIdNested)
{
const size_t i_decoded_nal_size = 512;
uint8_t p_dec_nal[i_decoded_nal_size];
size_t i_size = (i_buffer < i_decoded_nal_size)?i_buffer:i_decoded_nal_size;
nal_decode(p_buffer, p_dec_nal, i_size);
/* first two bytes are the NAL header, 3rd and 4th are:
vps_video_parameter_set_id(4)
vps_reserved_3_2bis(2)
vps_max_layers_minus1(6)
vps_max_sub_layers_minus1(3)
vps_temporal_id_nesting_flags
*/
*numTemporalLayer = ((p_dec_nal[3] & 0x0E) >> 1) + 1;
*temporalIdNested = (bool)(p_dec_nal[3] & 0x01);
/* 5th & 6th are reserved 0xffff */
/* copy the first 12 bytes of profile tier */
memcpy(general, &p_dec_nal[6], 12);
}
static void hevcParseSPS(uint8_t * p_buffer, size_t i_buffer, uint8_t * chroma_idc,
uint8_t *bit_depth_luma_minus8, uint8_t *bit_depth_chroma_minus8)
{
const size_t i_decoded_nal_size = 512;
uint8_t p_dec_nal[i_decoded_nal_size];
size_t i_size = (i_buffer < i_decoded_nal_size)?i_buffer-2:i_decoded_nal_size;
nal_decode(p_buffer+2, p_dec_nal, i_size);
bs_t bs;
bs_init(&bs, p_dec_nal, i_size);
/* skip vps id */
bs_skip(&bs, 4);
uint32_t sps_max_sublayer_minus1 = bs_read(&bs, 3);
/* skip nesting flag */
bs_skip(&bs, 1);
hevc_skip_profile_tiers_level(&bs, sps_max_sublayer_minus1);
/* skip sps id */
(void) read_ue( &bs );
*chroma_idc = read_ue(&bs);
if (*chroma_idc == 3)
bs_skip(&bs, 1);
/* skip width and heigh */
(void) read_ue( &bs );
(void) read_ue( &bs );
uint32_t conformance_window_flag = bs_read1(&bs);
if (conformance_window_flag) {
/* skip offsets*/
(void) read_ue(&bs);
(void) read_ue(&bs);
(void) read_ue(&bs);
(void) read_ue(&bs);
}
*bit_depth_luma_minus8 = read_ue(&bs);
*bit_depth_chroma_minus8 = read_ue(&bs);
}
static bo_t *GetHvcCTag(mp4_stream_t *p_stream)
{
/* Generate hvcC box matching iso/iec 14496-15 3rd edition */
bo_t *hvcC = box_new("hvcC");
if(!p_stream->fmt.i_extra)
return hvcC;
struct nal {
size_t i_buffer;
uint8_t * p_buffer;
};
/* According to the specification HEVC stream can have
* 16 vps id and an "unlimited" number of sps and pps id using ue(v) id*/
struct nal p_vps[16], *p_sps = NULL, *p_pps = NULL, *p_sei = NULL,
*p_nal = NULL;
size_t i_vps = 0, i_sps = 0, i_pps = 0, i_sei = 0;
uint8_t i_num_arrays = 0;
uint8_t * p_buffer = p_stream->fmt.p_extra;
size_t i_buffer = p_stream->fmt.i_extra;
uint8_t general_configuration[12] = {0};
uint8_t i_numTemporalLayer = 0;
uint8_t i_chroma_idc = 1;
uint8_t i_bit_depth_luma_minus8 = 0;
uint8_t i_bit_depth_chroma_minus8 = 0;
bool b_temporalIdNested = false;
uint32_t cmp = 0xFFFFFFFF;
while (i_buffer) {
/* look for start code 0X0000001 */
while (i_buffer) {
cmp = (cmp << 8) | *p_buffer;
if((cmp ^ UINT32_C(0x100)) <= UINT32_C(0xFF))
break;
p_buffer++;
i_buffer--;
}
if (p_nal)
p_nal->i_buffer = p_buffer - p_nal->p_buffer - ((i_buffer)?3:0);
switch (*p_buffer & 0x72) {
/* VPS */
case 0x40:
p_nal = &p_vps[i_vps++];
p_nal->p_buffer = p_buffer;
/* Only keep the general profile from the first VPS
* if there are several (this shouldn't happen so soon) */
if (i_vps == 1) {
hevcParseVPS(p_buffer, i_buffer, general_configuration,
&i_numTemporalLayer, &b_temporalIdNested);
i_num_arrays++;
}
break;
/* SPS */
case 0x42: {
struct nal * p_tmp = realloc(p_sps, sizeof(struct nal) * (i_sps + 1));
if (!p_tmp)
break;
p_sps = p_tmp;
p_nal = &p_sps[i_sps++];
p_nal->p_buffer = p_buffer;
if (i_sps == 1 && i_buffer > 15) {
/* Get Chroma_idc and bitdepths */
hevcParseSPS(p_buffer, i_buffer, &i_chroma_idc,
&i_bit_depth_luma_minus8, &i_bit_depth_chroma_minus8);
i_num_arrays++;
}
break;
}
/* PPS */
case 0x44: {
struct nal * p_tmp = realloc(p_pps, sizeof(struct nal) * (i_pps + 1));
if (!p_tmp)
break;
p_pps = p_tmp;
p_nal = &p_pps[i_pps++];
p_nal->p_buffer = p_buffer;
if (i_pps == 1)
i_num_arrays++;
break;
}
/* SEI */
case 0x4E:
case 0x50: {
struct nal * p_tmp = realloc(p_sei, sizeof(struct nal) * (i_sei + 1));
if (!p_tmp)
break;
p_sei = p_tmp;
p_nal = &p_sei[i_sei++];
p_nal->p_buffer = p_buffer;
if(i_sei == 1)
i_num_arrays++;
break;
}
default:
p_nal = NULL;
break;
}
}
bo_add_8(hvcC, 0x01);
bo_add_mem(hvcC, 12, general_configuration);
/* Don't set min spatial segmentation */
bo_add_16be(hvcC, 0xF000);
/* Don't set parallelism type since segmentation isn't set */
bo_add_8(hvcC, 0xFC);
bo_add_8(hvcC, (0xFC | (i_chroma_idc & 0x03)));
bo_add_8(hvcC, (0xF8 | (i_bit_depth_luma_minus8 & 0x07)));
bo_add_8(hvcC, (0xF8 | (i_bit_depth_chroma_minus8 & 0x07)));
/* Don't set framerate */
bo_add_16be(hvcC, 0x0000);
/* Force NAL size of 4 bytes that replace the startcode */
bo_add_8(hvcC, (((i_numTemporalLayer & 0x07) << 3) |
(b_temporalIdNested << 2) | 0x03));
bo_add_8(hvcC, i_num_arrays);
if (i_vps)
{
/* Write VPS without forcing array_completeness */
bo_add_8(hvcC, 32);
bo_add_16be(hvcC, i_vps);
for (size_t i = 0; i < i_vps; i++) {
p_nal = &p_vps[i];
bo_add_16be(hvcC, p_nal->i_buffer);
bo_add_mem(hvcC, p_nal->i_buffer, p_nal->p_buffer);
}
}
if (i_sps) {
/* Write SPS without forcing array_completeness */
bo_add_8(hvcC, 33);
bo_add_16be(hvcC, i_sps);
for (size_t i = 0; i < i_sps; i++) {
p_nal = &p_sps[i];
bo_add_16be(hvcC, p_nal->i_buffer);
bo_add_mem(hvcC, p_nal->i_buffer, p_nal->p_buffer);
}
}
if (i_pps) {
/* Write PPS without forcing array_completeness */
bo_add_8(hvcC, 34);
bo_add_16be(hvcC, i_pps);
for (size_t i = 0; i < i_pps; i++) {
p_nal = &p_pps[i];
bo_add_16be(hvcC, p_nal->i_buffer);
bo_add_mem(hvcC, p_nal->i_buffer, p_nal->p_buffer);
}
}
if (i_sei) {
/* Write SEI without forcing array_completeness */
bo_add_8(hvcC, 39);
bo_add_16be(hvcC, i_sei);
for (size_t i = 0; i < i_sei; i++) {
p_nal = &p_sei[i];
bo_add_16be(hvcC, p_nal->i_buffer);
bo_add_mem(hvcC, p_nal->i_buffer, p_nal->p_buffer);
}
}
return hvcC;
}
static bo_t *GetAvcCTag(mp4_stream_t *p_stream)
{
bo_t *avcC = NULL;
uint8_t *p_sps = NULL;
uint8_t *p_pps = NULL;
int i_sps_size = 0;
int i_pps_size = 0;
if (p_stream->fmt.i_extra > 0) {
/* FIXME: take into account multiple sps/pps */
uint8_t *p_buffer = p_stream->fmt.p_extra;
int i_buffer = p_stream->fmt.i_extra;
while (i_buffer > 3) {
while (memcmp(p_buffer, &avc1_start_code[1], 3)) {
i_buffer--;
p_buffer++;
}
const int i_nal_type = p_buffer[3]&0x1f;
int i_startcode = 0;
for (int i_offset = 1; i_offset+2 < i_buffer ; i_offset++)
if (!memcmp(&p_buffer[i_offset], &avc1_start_code[1], 3)) {
/* we found another startcode */
i_startcode = i_offset;
while (p_buffer[i_startcode-1] == 0 && i_startcode > 0)
i_startcode--;
break;
}
int i_size = i_startcode ? i_startcode : i_buffer;
if (i_nal_type == 7) {
p_sps = &p_buffer[3];
i_sps_size = i_size - 3;
}
if (i_nal_type == 8) {
p_pps = &p_buffer[3];
i_pps_size = i_size - 3;
}
i_buffer -= i_size;
p_buffer += i_size;
}
}
/* FIXME use better value */
avcC = box_new("avcC");
bo_add_8(avcC, 1); /* configuration version */
bo_add_8(avcC, i_sps_size ? p_sps[1] : 77);
bo_add_8(avcC, i_sps_size ? p_sps[2] : 64);
bo_add_8(avcC, i_sps_size ? p_sps[3] : 30); /* level, 5.1 */
bo_add_8(avcC, 0xff); /* 0b11111100 | lengthsize = 0x11 */
bo_add_8(avcC, 0xe0 | (i_sps_size > 0 ? 1 : 0)); /* 0b11100000 | sps_count */
if (i_sps_size > 0) {
bo_add_16be(avcC, i_sps_size);
bo_add_mem(avcC, i_sps_size, p_sps);
}
bo_add_8(avcC, (i_pps_size > 0 ? 1 : 0)); /* pps_count */
if (i_pps_size > 0) {
bo_add_16be(avcC, i_pps_size);
bo_add_mem(avcC, i_pps_size, p_pps);
}
return avcC;
}
/* TODO: No idea about these values */
static bo_t *GetSVQ3Tag(mp4_stream_t *p_stream)
{
bo_t *smi = box_new("SMI ");
if (p_stream->fmt.i_extra > 0x4e) {
uint8_t *p_end = &((uint8_t*)p_stream->fmt.p_extra)[p_stream->fmt.i_extra];
uint8_t *p = &((uint8_t*)p_stream->fmt.p_extra)[0x46];
while (p + 8 < p_end) {
int i_size = GetDWBE(p);
if (i_size <= 1) /* FIXME handle 1 as long size */
break;
if (!strncmp((const char *)&p[4], "SMI ", 4)) {
bo_add_mem(smi, p_end - p - 8, &p[8]);
return smi;
}
p += i_size;
}
}
/* Create a dummy one in fallback */
bo_add_fourcc(smi, "SEQH");
bo_add_32be(smi, 0x5);
bo_add_32be(smi, 0xe2c0211d);
bo_add_8(smi, 0xc0);
return smi;
}
static bo_t *GetUdtaTag(sout_mux_t *p_mux)
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
bo_t *udta = box_new("udta");
/* Requirements */
for (int i_track = 0; i_track < p_sys->i_nb_streams; i_track++) {
mp4_stream_t *p_stream = p_sys->pp_streams[i_track];
vlc_fourcc_t codec = p_stream->fmt.i_codec;
if (codec == VLC_CODEC_MP4V || codec == VLC_CODEC_MP4A) {
bo_t *box = box_new("\251req");
/* String length */
bo_add_16be(box, sizeof("QuickTime 6.0 or greater") - 1);
bo_add_16be(box, 0);
bo_add_mem(box, sizeof("QuickTime 6.0 or greater") - 1,
(uint8_t *)"QuickTime 6.0 or greater");
box_gather(udta, box);
break;
}
}
/* Encoder */
{
bo_t *box = box_new("\251enc");
/* String length */
bo_add_16be(box, sizeof(PACKAGE_STRING " stream output") - 1);
bo_add_16be(box, 0);
bo_add_mem(box, sizeof(PACKAGE_STRING " stream output") - 1,
(uint8_t*)PACKAGE_STRING " stream output");
box_gather(udta, box);
}
#if 0
/* Misc atoms */
vlc_meta_t *p_meta = p_mux->p_sout->p_meta;
if (p_meta) {
#define ADD_META_BOX(type, box_string) { \
bo_t *box = NULL; \
if (vlc_meta_Get(p_meta, vlc_meta_##type)) \
box = box_new("\251" box_string); \
if (box) { \
bo_add_16be(box, strlen(vlc_meta_Get(p_meta, vlc_meta_##type))); \
bo_add_16be(box, 0); \
bo_add_mem(box, strlen(vlc_meta_Get(p_meta, vlc_meta_##type)), \
(uint8_t*)(vlc_meta_Get(p_meta, vlc_meta_##type))); \
box_gather(udta, box); \
} }
ADD_META_BOX(Title, "nam");
ADD_META_BOX(Artist, "ART");
ADD_META_BOX(Genre, "gen");
ADD_META_BOX(Copyright, "cpy");
ADD_META_BOX(Description, "des");
ADD_META_BOX(Date, "day");
ADD_META_BOX(URL, "url");
#undef ADD_META_BOX
}
#endif
return udta;
}
static bo_t *GetSounBox(sout_mux_t *p_mux, mp4_stream_t *p_stream)
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
bool b_descr = true;
vlc_fourcc_t codec = p_stream->fmt.i_codec;
char fcc[4];
vlc_fourcc_to_char(codec, fcc);
if (codec == VLC_CODEC_MPGA) {
if (p_sys->b_mov) {
b_descr = false;
memcpy(fcc, ".mp3", 4);
} else
memcpy(fcc, "mp4a", 4);
}
bo_t *soun = box_new(fcc);
for (int i = 0; i < 6; i++)
bo_add_8(soun, 0); // reserved;
bo_add_16be(soun, 1); // data-reference-index
/* SoundDescription */
if (p_sys->b_mov && codec == VLC_CODEC_MP4A)
bo_add_16be(soun, 1); // version 1;
else
bo_add_16be(soun, 0); // version 0;
bo_add_16be(soun, 0); // revision level (0)
bo_add_32be(soun, 0); // vendor
// channel-count
bo_add_16be(soun, p_stream->fmt.audio.i_channels);
// sample size
bo_add_16be(soun, p_stream->fmt.audio.i_bitspersample ?
p_stream->fmt.audio.i_bitspersample : 16);
bo_add_16be(soun, -2); // compression id
bo_add_16be(soun, 0); // packet size (0)
bo_add_16be(soun, p_stream->fmt.audio.i_rate); // sampleratehi
bo_add_16be(soun, 0); // sampleratelo
/* Extended data for SoundDescription V1 */
if (p_sys->b_mov && p_stream->fmt.i_codec == VLC_CODEC_MP4A) {
/* samples per packet */
bo_add_32be(soun, p_stream->fmt.audio.i_frame_length);
bo_add_32be(soun, 1536); /* bytes per packet */
bo_add_32be(soun, 2); /* bytes per frame */
/* bytes per sample */
bo_add_32be(soun, 2 /*p_stream->fmt.audio.i_bitspersample/8 */);
}
/* Add an ES Descriptor */
if (b_descr) {
bo_t *box;
if (p_sys->b_mov && codec == VLC_CODEC_MP4A)
box = GetWaveTag(p_stream);
else if (codec == VLC_CODEC_AMR_NB)
box = GetDamrTag(p_stream);
else
box = GetESDS(p_stream);
box_gather(soun, box);
}
return soun;
}
static bo_t *GetVideBox(mp4_stream_t *p_stream)
{
char fcc[4];
switch(p_stream->fmt.i_codec)
{
case VLC_CODEC_MP4V:
case VLC_CODEC_MPGV: memcpy(fcc, "mp4v", 4); break;
case VLC_CODEC_MJPG: memcpy(fcc, "mjpa", 4); break;
case VLC_CODEC_SVQ1: memcpy(fcc, "SVQ1", 4); break;
case VLC_CODEC_SVQ3: memcpy(fcc, "SVQ3", 4); break;
case VLC_CODEC_H263: memcpy(fcc, "s263", 4); break;
case VLC_CODEC_H264: memcpy(fcc, "avc1", 4); break;
case VLC_CODEC_HEVC: memcpy(fcc, "hvc1", 4); break;
case VLC_CODEC_YV12: memcpy(fcc, "yv12", 4); break;
case VLC_CODEC_YUYV: memcpy(fcc, "yuy2", 4); break;
default:
vlc_fourcc_to_char(p_stream->fmt.i_codec, fcc);
break;
}
bo_t *vide = box_new(fcc);
for (int i = 0; i < 6; i++)
bo_add_8(vide, 0); // reserved;
bo_add_16be(vide, 1); // data-reference-index
bo_add_16be(vide, 0); // predefined;
bo_add_16be(vide, 0); // reserved;
for (int i = 0; i < 3; i++)
bo_add_32be(vide, 0); // predefined;
bo_add_16be(vide, p_stream->fmt.video.i_width); // i_width
bo_add_16be(vide, p_stream->fmt.video.i_height); // i_height
bo_add_32be(vide, 0x00480000); // h 72dpi
bo_add_32be(vide, 0x00480000); // v 72dpi
bo_add_32be(vide, 0); // data size, always 0
bo_add_16be(vide, 1); // frames count per sample
// compressor name;
for (int i = 0; i < 32; i++)
bo_add_8(vide, 0);
bo_add_16be(vide, 0x18); // depth
bo_add_16be(vide, 0xffff); // predefined
/* add an ES Descriptor */
switch(p_stream->fmt.i_codec)
{
case VLC_CODEC_MP4V:
case VLC_CODEC_MPGV:
box_gather(vide, GetESDS(p_stream));
break;
case VLC_CODEC_H263:
box_gather(vide, GetD263Tag());
break;
case VLC_CODEC_SVQ3:
box_gather(vide, GetSVQ3Tag(p_stream));
break;
case VLC_CODEC_H264:
box_gather(vide, GetAvcCTag(p_stream));
break;
case VLC_CODEC_HEVC:
box_gather(vide, GetHvcCTag(p_stream));
break;
}
return vide;
}
static bo_t *GetTextBox(void)
{
bo_t *text = box_new("text");
for (int i = 0; i < 6; i++)
bo_add_8(text, 0); // reserved;
bo_add_16be(text, 1); // data-reference-index
bo_add_32be(text, 0); // display flags
bo_add_32be(text, 0); // justification
for (int i = 0; i < 3; i++)
bo_add_16be(text, 0); // back ground color
bo_add_16be(text, 0); // box text
bo_add_16be(text, 0); // box text
bo_add_16be(text, 0); // box text
bo_add_16be(text, 0); // box text
bo_add_64be(text, 0); // reserved
for (int i = 0; i < 3; i++)
bo_add_16be(text, 0xff); // foreground color
bo_add_8 (text, 9);
bo_add_mem(text, 9, (uint8_t*)"Helvetica");
return text;
}
static bo_t *GetStblBox(sout_mux_t *p_mux, mp4_stream_t *p_stream)
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
/* sample description */
bo_t *stsd = box_full_new("stsd", 0, 0);
bo_add_32be(stsd, 1);
if (p_stream->fmt.i_cat == AUDIO_ES)
box_gather(stsd, GetSounBox(p_mux, p_stream));
else if (p_stream->fmt.i_cat == VIDEO_ES)
box_gather(stsd, GetVideBox(p_stream));
else if (p_stream->fmt.i_cat == SPU_ES)
box_gather(stsd, GetTextBox());
/* chunk offset table */
bo_t *stco;
if (p_sys->i_pos >= (((uint64_t)0x1) << 32)) {
/* 64 bits version */
p_stream->b_stco64 = true;
stco = box_full_new("co64", 0, 0);
} else {
/* 32 bits version */
p_stream->b_stco64 = false;
stco = box_full_new("stco", 0, 0);
}
bo_add_32be(stco, 0); // entry-count (fixed latter)
/* sample to chunk table */
bo_t *stsc = box_full_new("stsc", 0, 0);
bo_add_32be(stsc, 0); // entry-count (fixed latter)
unsigned i_chunk = 0;
unsigned i_stsc_last_val = 0, i_stsc_entries = 0;
for (unsigned i = 0; i < p_stream->i_entry_count; i_chunk++) {
mp4_entry_t *entry = p_stream->entry;
int i_first = i;
if (p_stream->b_stco64)
bo_add_64be(stco, entry[i].i_pos);
else
bo_add_32be(stco, entry[i].i_pos);
for (; i < p_stream->i_entry_count; i++)
if (i >= p_stream->i_entry_count - 1 ||
entry[i].i_pos + entry[i].i_size != entry[i+1].i_pos) {
i++;
break;
}
/* Add entry to the stsc table */
if (i_stsc_last_val != i - i_first) {
bo_add_32be(stsc, 1 + i_chunk); // first-chunk
bo_add_32be(stsc, i - i_first) ; // samples-per-chunk
bo_add_32be(stsc, 1); // sample-descr-index
i_stsc_last_val = i - i_first;
i_stsc_entries++;
}
}
/* Fix stco entry count */
bo_fix_32be(stco, 12, i_chunk);
msg_Dbg(p_mux, "created %d chunks (stco)", i_chunk);
/* Fix stsc entry count */
bo_fix_32be(stsc, 12, i_stsc_entries );
/* add stts */
bo_t *stts = box_full_new("stts", 0, 0);
bo_add_32be(stts, 0); // entry-count (fixed latter)
uint32_t i_timescale;
if (p_stream->fmt.i_cat == AUDIO_ES)
i_timescale = p_stream->fmt.audio.i_rate;
else
i_timescale = CLOCK_FREQ;
unsigned i_index = 0;
for (unsigned i = 0; i < p_stream->i_entry_count; i_index++) {
int i_first = i;
mtime_t i_delta = p_stream->entry[i].i_length;
for (; i < p_stream->i_entry_count; ++i)
if (i == p_stream->i_entry_count || p_stream->entry[i].i_length != i_delta)
break;
bo_add_32be(stts, i - i_first); // sample-count
bo_add_32be(stts, i_delta * i_timescale / CLOCK_FREQ ); // sample-delta
}
bo_fix_32be(stts, 12, i_index);
/* composition time handling */
bo_t *ctts = NULL;
if ( p_stream->b_hasbframes && (ctts = box_full_new("ctts", 0, 0)) )
{
bo_add_32be(ctts, 0);
i_index = 0;
for (unsigned i = 0; i < p_stream->i_entry_count; i_index++)
{
int i_first = i;
mtime_t i_offset = p_stream->entry[i].i_pts_dts;
for (; i < p_stream->i_entry_count; ++i)
if (i == p_stream->i_entry_count || p_stream->entry[i].i_pts_dts != i_offset)
break;
bo_add_32be(ctts, i - i_first); // sample-count
bo_add_32be(ctts, i_offset * i_timescale / CLOCK_FREQ ); // sample-offset
}
bo_fix_32be(ctts, 12, i_index);
}
bo_t *stsz = box_full_new("stsz", 0, 0);
int i_size = 0;
for (unsigned i = 0; i < p_stream->i_entry_count; i++)
{
if ( i == 0 )
i_size = p_stream->entry[i].i_size;
else if ( p_stream->entry[i].i_size != i_size )
{
i_size = 0;
break;
}
}
bo_add_32be(stsz, i_size); // sample-size
bo_add_32be(stsz, p_stream->i_entry_count); // sample-count
if ( i_size == 0 ) // all samples have different size
{
for (unsigned i = 0; i < p_stream->i_entry_count; i++)
bo_add_32be(stsz, p_stream->entry[i].i_size); // sample-size
}
/* create stss table */
bo_t *stss = NULL;
i_index = 0;
for (unsigned i = 0; i < p_stream->i_entry_count; i++)
if (p_stream->entry[i].i_flags & BLOCK_FLAG_TYPE_I) {
if (stss == NULL) {
stss = box_full_new("stss", 0, 0);
bo_add_32be(stss, 0); /* fixed later */
}
bo_add_32be(stss, 1 + i);
i_index++;
}
if (stss)
bo_fix_32be(stss, 12, i_index);
/* Now gather all boxes into stbl */
bo_t *stbl = box_new("stbl");
box_gather(stbl, stsd);
box_gather(stbl, stts);
if (stss)
box_gather(stbl, stss);
if (ctts)
box_gather(stbl, ctts);
box_gather(stbl, stsc);
box_gather(stbl, stsz);
p_stream->i_stco_pos = stbl->len + 16;
box_gather(stbl, stco);
return stbl;
}
static int64_t get_timestamp(void);
static void matrix_apply_rotation(es_format_t *fmt, uint32_t mvhd_matrix[9])
{
enum video_orientation_t orientation = ORIENT_NORMAL;
if (fmt->i_cat == VIDEO_ES)
orientation = fmt->video.orientation;
#define ATAN(a, b) do { mvhd_matrix[1] = (a) << 16; \
mvhd_matrix[0] = (b) << 16; \
} while(0)
switch (orientation) {
case ORIENT_ROTATED_90: ATAN( 1, 0); break;
case ORIENT_ROTATED_180: ATAN( 0, -1); break;
case ORIENT_ROTATED_270: ATAN( -1, 0); break;
default: ATAN( 0, 1); break;
}
mvhd_matrix[3] = mvhd_matrix[0] ? 0 : 0x10000;
mvhd_matrix[4] = mvhd_matrix[1] ? 0 : 0x10000;
}
static bo_t *GetMoovBox(sout_mux_t *p_mux)
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
bo_t *moov, *mvhd;
uint32_t i_movie_timescale = 90000;
int64_t i_movie_duration = 0;
int64_t i_timestamp = get_timestamp();
moov = box_new("moov");
/* Create general info */
for (int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++) {
mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
i_movie_duration = __MAX(i_movie_duration, p_stream->i_duration);
}
msg_Dbg(p_mux, "movie duration %"PRId64"s", i_movie_duration / CLOCK_FREQ);
i_movie_duration = i_movie_duration * i_movie_timescale / CLOCK_FREQ;
/* *** add /moov/mvhd *** */
if (!p_sys->b_64_ext) {
mvhd = box_full_new("mvhd", 0, 0);
bo_add_32be(mvhd, i_timestamp); // creation time
bo_add_32be(mvhd, i_timestamp); // modification time
bo_add_32be(mvhd, i_movie_timescale); // timescale
bo_add_32be(mvhd, i_movie_duration); // duration
} else {
mvhd = box_full_new("mvhd", 1, 0);
bo_add_64be(mvhd, i_timestamp); // creation time
bo_add_64be(mvhd, i_timestamp); // modification time
bo_add_32be(mvhd, i_movie_timescale); // timescale
bo_add_64be(mvhd, i_movie_duration); // duration
}
bo_add_32be(mvhd, 0x10000); // rate
bo_add_16be(mvhd, 0x100); // volume
bo_add_16be(mvhd, 0); // reserved
for (int i = 0; i < 2; i++)
bo_add_32be(mvhd, 0); // reserved
uint32_t mvhd_matrix[9] = { 0x10000, 0, 0, 0, 0x10000, 0, 0, 0, 0x40000000 };
for (int i = 0; i < 9; i++)
bo_add_32be(mvhd, mvhd_matrix[i]);// matrix
for (int i = 0; i < 6; i++)
bo_add_32be(mvhd, 0); // pre-defined
/* Next available track id */
bo_add_32be(mvhd, p_sys->i_nb_streams + 1); // next-track-id
box_gather(moov, mvhd);
for (int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++) {
mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
uint32_t i_timescale;
if (p_stream->fmt.i_cat == AUDIO_ES)
i_timescale = p_stream->fmt.audio.i_rate;
else
i_timescale = CLOCK_FREQ;
/* *** add /moov/trak *** */
bo_t *trak = box_new("trak");
/* *** add /moov/trak/tkhd *** */
bo_t *tkhd;
if (!p_sys->b_64_ext) {
if (p_sys->b_mov)
tkhd = box_full_new("tkhd", 0, 0x0f);
else
tkhd = box_full_new("tkhd", 0, 1);
bo_add_32be(tkhd, i_timestamp); // creation time
bo_add_32be(tkhd, i_timestamp); // modification time
bo_add_32be(tkhd, p_stream->i_track_id);
bo_add_32be(tkhd, 0); // reserved 0
bo_add_32be(tkhd, p_stream->i_duration *
(int64_t)i_movie_timescale / CLOCK_FREQ); // duration
} else {
if (p_sys->b_mov)
tkhd = box_full_new("tkhd", 1, 0x0f);
else
tkhd = box_full_new("tkhd", 1, 1);
bo_add_64be(tkhd, i_timestamp); // creation time
bo_add_64be(tkhd, i_timestamp); // modification time
bo_add_32be(tkhd, p_stream->i_track_id);
bo_add_32be(tkhd, 0); // reserved 0
bo_add_64be(tkhd, p_stream->i_duration *
(int64_t)i_movie_timescale / CLOCK_FREQ); // duration
}
for (int i = 0; i < 2; i++)
bo_add_32be(tkhd, 0); // reserved
bo_add_16be(tkhd, 0); // layer
bo_add_16be(tkhd, 0); // pre-defined
// volume
bo_add_16be(tkhd, p_stream->fmt.i_cat == AUDIO_ES ? 0x100 : 0);
bo_add_16be(tkhd, 0); // reserved
matrix_apply_rotation(&p_stream->fmt, mvhd_matrix);
for (int i = 0; i < 9; i++)
bo_add_32be(tkhd, mvhd_matrix[i]); // matrix
if (p_stream->fmt.i_cat == AUDIO_ES) {
bo_add_32be(tkhd, 0); // width (presentation)
bo_add_32be(tkhd, 0); // height(presentation)
} else if (p_stream->fmt.i_cat == VIDEO_ES) {
int i_width = p_stream->fmt.video.i_width << 16;
if (p_stream->fmt.video.i_sar_num > 0 && p_stream->fmt.video.i_sar_den > 0) {
i_width = (int64_t)p_stream->fmt.video.i_sar_num *
((int64_t)p_stream->fmt.video.i_width << 16) /
p_stream->fmt.video.i_sar_den;
}
// width (presentation)
bo_add_32be(tkhd, i_width);
// height(presentation)
bo_add_32be(tkhd, p_stream->fmt.video.i_height << 16);
} else {
int i_width = 320 << 16;
int i_height = 200;
for (int i = 0; i < p_sys->i_nb_streams; i++) {
mp4_stream_t *tk = p_sys->pp_streams[i];
if (tk->fmt.i_cat == VIDEO_ES) {
if (tk->fmt.video.i_sar_num > 0 &&
tk->fmt.video.i_sar_den > 0)
i_width = (int64_t)tk->fmt.video.i_sar_num *
((int64_t)tk->fmt.video.i_width << 16) /
tk->fmt.video.i_sar_den;
else
i_width = tk->fmt.video.i_width << 16;
i_height = tk->fmt.video.i_height;
break;
}
}
bo_add_32be(tkhd, i_width); // width (presentation)
bo_add_32be(tkhd, i_height << 16); // height(presentation)
}
box_gather(trak, tkhd);
/* *** add /moov/trak/edts and elst */
bo_t *edts = box_new("edts");
bo_t *elst = box_full_new("elst", p_sys->b_64_ext ? 1 : 0, 0);
if (p_stream->i_dts_start > p_sys->i_dts_start) {
bo_add_32be(elst, 2);
if (p_sys->b_64_ext) {
bo_add_64be(elst, (p_stream->i_dts_start-p_sys->i_dts_start) *
i_movie_timescale / CLOCK_FREQ);
bo_add_64be(elst, -1);
} else {
bo_add_32be(elst, (p_stream->i_dts_start-p_sys->i_dts_start) *
i_movie_timescale / CLOCK_FREQ);
bo_add_32be(elst, -1);
}
bo_add_16be(elst, 1);
bo_add_16be(elst, 0);
} else {
bo_add_32be(elst, 1);
}
if (p_sys->b_64_ext) {
bo_add_64be(elst, p_stream->i_duration *
i_movie_timescale / CLOCK_FREQ);
bo_add_64be(elst, 0);
} else {
bo_add_32be(elst, p_stream->i_duration *
i_movie_timescale / CLOCK_FREQ);
bo_add_32be(elst, 0);
}
bo_add_16be(elst, 1);
bo_add_16be(elst, 0);
box_gather(edts, elst);
box_gather(trak, edts);
/* *** add /moov/trak/mdia *** */
bo_t *mdia = box_new("mdia");
/* media header */
bo_t *mdhd;
if (!p_sys->b_64_ext) {
mdhd = box_full_new("mdhd", 0, 0);
bo_add_32be(mdhd, i_timestamp); // creation time
bo_add_32be(mdhd, i_timestamp); // modification time
bo_add_32be(mdhd, i_timescale); // timescale
bo_add_32be(mdhd, p_stream->i_duration * (int64_t)i_timescale /
CLOCK_FREQ); // duration
} else {
mdhd = box_full_new("mdhd", 1, 0);
bo_add_64be(mdhd, i_timestamp); // creation time
bo_add_64be(mdhd, i_timestamp); // modification time
bo_add_32be(mdhd, i_timescale); // timescale
bo_add_64be(mdhd, p_stream->i_duration * (int64_t)i_timescale /
CLOCK_FREQ); // duration
}
if (p_stream->fmt.psz_language) {
char *psz = p_stream->fmt.psz_language;
const iso639_lang_t *pl = NULL;
uint16_t lang = 0x0;
if (strlen(psz) == 2)
pl = GetLang_1(psz);
else if (strlen(psz) == 3) {
pl = GetLang_2B(psz);
if (!strcmp(pl->psz_iso639_1, "??"))
pl = GetLang_2T(psz);
}
if (pl && strcmp(pl->psz_iso639_1, "??"))
lang = ((pl->psz_iso639_2T[0] - 0x60) << 10) |
((pl->psz_iso639_2T[1] - 0x60) << 5) |
((pl->psz_iso639_2T[2] - 0x60));
bo_add_16be(mdhd, lang); // language
} else
bo_add_16be(mdhd, 0 ); // language
bo_add_16be(mdhd, 0 ); // predefined
box_gather(mdia, mdhd);
/* handler reference */
bo_t *hdlr = box_full_new("hdlr", 0, 0);
if (p_sys->b_mov)
bo_add_fourcc(hdlr, "mhlr"); // media handler
else
bo_add_32be(hdlr, 0);
if (p_stream->fmt.i_cat == AUDIO_ES)
bo_add_fourcc(hdlr, "soun");
else if (p_stream->fmt.i_cat == VIDEO_ES)
bo_add_fourcc(hdlr, "vide");
else if (p_stream->fmt.i_cat == SPU_ES)
bo_add_fourcc(hdlr, "text");
bo_add_32be(hdlr, 0); // reserved
bo_add_32be(hdlr, 0); // reserved
bo_add_32be(hdlr, 0); // reserved
if (p_sys->b_mov)
bo_add_8(hdlr, 12); /* Pascal string for .mov */
if (p_stream->fmt.i_cat == AUDIO_ES)
bo_add_mem(hdlr, 12, (uint8_t*)"SoundHandler");
else if (p_stream->fmt.i_cat == VIDEO_ES)
bo_add_mem(hdlr, 12, (uint8_t*)"VideoHandler");
else
bo_add_mem(hdlr, 12, (uint8_t*)"Text Handler");
if (!p_sys->b_mov)
bo_add_8(hdlr, 0); /* asciiz string for .mp4, yes that's BRAIN DAMAGED F**K MP4 */
box_gather(mdia, hdlr);
/* minf*/
bo_t *minf = box_new("minf");
/* add smhd|vmhd */
if (p_stream->fmt.i_cat == AUDIO_ES) {
bo_t *smhd;
smhd = box_full_new("smhd", 0, 0);
bo_add_16be(smhd, 0); // balance
bo_add_16be(smhd, 0); // reserved
box_gather(minf, smhd);
} else if (p_stream->fmt.i_cat == VIDEO_ES) {
bo_t *vmhd;
vmhd = box_full_new("vmhd", 0, 1);
bo_add_16be(vmhd, 0); // graphicsmode
for (int i = 0; i < 3; i++)
bo_add_16be(vmhd, 0); // opcolor
box_gather(minf, vmhd);
} else if (p_stream->fmt.i_cat == SPU_ES) {
bo_t *gmhd = box_new("gmhd");
bo_t *gmin = box_full_new("gmin", 0, 1);
bo_add_16be(gmin, 0); // graphicsmode
for (int i = 0; i < 3; i++)
bo_add_16be(gmin, 0); // opcolor
bo_add_16be(gmin, 0); // balance
bo_add_16be(gmin, 0); // reserved
box_gather(gmhd, gmin);
box_gather(minf, gmhd);
}
/* dinf */
bo_t *dinf = box_new("dinf");
bo_t *dref = box_full_new("dref", 0, 0);
bo_add_32be(dref, 1);
bo_t *url = box_full_new("url ", 0, 0x01);
box_gather(dref, url);
box_gather(dinf, dref);
/* append dinf to mdia */
box_gather(minf, dinf);
/* add stbl */
bo_t *stbl = GetStblBox(p_mux, p_stream);
/* append stbl to minf */
p_stream->i_stco_pos += minf->len;
box_gather(minf, stbl);
/* append minf to mdia */
p_stream->i_stco_pos += mdia->len;
box_gather(mdia, minf);
/* append mdia to trak */
p_stream->i_stco_pos += trak->len;
box_gather(trak, mdia);
/* append trak to moov */
p_stream->i_stco_pos += moov->len;
box_gather(moov, trak);
}
/* Add user data tags */
box_gather(moov, GetUdtaTag(p_mux));
box_fix(moov);
return moov;
}
/****************************************************************************/
static void bo_init(bo_t *p_bo)
{
p_bo->len = 0;
p_bo->b = block_Alloc(1024);
}
static void bo_add_8(bo_t *p_bo, uint8_t i)
{
if (p_bo->len >= p_bo->b->i_buffer)
p_bo->b = block_Realloc(p_bo->b, 0, p_bo->b->i_buffer + 1024);
p_bo->b->p_buffer[p_bo->len++] = i;
}
static void bo_add_16be(bo_t *p_bo, uint16_t i)
{
bo_add_8(p_bo, ((i >> 8) &0xff));
bo_add_8(p_bo, i &0xff);
}
static void bo_add_24be(bo_t *p_bo, uint32_t i)
{
bo_add_8(p_bo, ((i >> 16) &0xff));
bo_add_8(p_bo, ((i >> 8) &0xff));
bo_add_8(p_bo, ( i &0xff));
}
static void bo_add_32be(bo_t *p_bo, uint32_t i)
{
bo_add_16be(p_bo, ((i >> 16) &0xffff));
bo_add_16be(p_bo, i &0xffff);
}
static void bo_fix_32be (bo_t *p_bo, int i_pos, uint32_t i)
{
p_bo->b->p_buffer[i_pos ] = (i >> 24)&0xff;
p_bo->b->p_buffer[i_pos + 1] = (i >> 16)&0xff;
p_bo->b->p_buffer[i_pos + 2] = (i >> 8)&0xff;
p_bo->b->p_buffer[i_pos + 3] = (i )&0xff;
}
static void bo_add_64be(bo_t *p_bo, uint64_t i)
{
bo_add_32be(p_bo, ((i >> 32) &0xffffffff));
bo_add_32be(p_bo, i &0xffffffff);
}
static void bo_add_fourcc(bo_t *p_bo, const char *fcc)
{
bo_add_8(p_bo, fcc[0]);
bo_add_8(p_bo, fcc[1]);
bo_add_8(p_bo, fcc[2]);
bo_add_8(p_bo, fcc[3]);
}
static void bo_add_mem(bo_t *p_bo, int i_size, uint8_t *p_mem)
{
for (int i = 0; i < i_size; i++)
bo_add_8(p_bo, p_mem[i]);
}
static void bo_add_descr(bo_t *p_bo, uint8_t tag, uint32_t size)
{
bo_add_8(p_bo, tag);
for (int i = 3; i>0; i--)
bo_add_8(p_bo, (size>>(7*i)) | 0x80);
bo_add_8(p_bo, size & 0x7F);
}
static bo_t *box_new(const char *fcc)
{
bo_t *box = malloc(sizeof(*box));
if (!box)
return NULL;
bo_init(box);
bo_add_32be (box, 0);
bo_add_fourcc(box, fcc);
return box;
}
static bo_t *box_full_new(const char *fcc, uint8_t v, uint32_t f)
{
bo_t *box = box_new(fcc);
if (!box)
return NULL;
bo_add_8 (box, v);
bo_add_24be (box, f);
return box;
}
static void box_fix(bo_t *box)
{
box->b->p_buffer[0] = box->len >> 24;
box->b->p_buffer[1] = box->len >> 16;
box->b->p_buffer[2] = box->len >> 8;
box->b->p_buffer[3] = box->len;
}
static void box_gather (bo_t *box, bo_t *box2)
{
box_fix(box2);
box->b = block_Realloc(box->b, 0, box->len + box2->len);
memcpy(&box->b->p_buffer[box->len], box2->b->p_buffer, box2->len);
box->len += box2->len;
block_Release(box2->b);
free(box2);
}
static void box_send(sout_mux_t *p_mux, bo_t *box)
{
box->b->i_buffer = box->len;
sout_AccessOutWrite(p_mux->p_access, box->b);
free(box);
}
static int64_t get_timestamp(void)
{
int64_t i_timestamp = time(NULL);
i_timestamp += 2082844800; // MOV/MP4 start date is 1/1/1904
// 208284480 is (((1970 - 1904) * 365) + 17) * 24 * 60 * 60
return i_timestamp;
}