* Preamble
*****************************************************************************/
-#include <vlc/vlc.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
#include <vlc_aout.h>
#include <vlc_codec.h>
#include <vlc_block.h>
#include "vlc_block_helper.h"
+#include <assert.h>
+
/* AAC Config in ES:
*
* AudioObjectType 5 bits
int i_input_rate;
/* LOAS */
- vlc_bool_t b_latm_cfg;
+ bool b_latm_cfg;
latm_mux_t latm;
};
enum {
-
STATE_NOSYNC,
STATE_SYNC,
STATE_HEADER,
vlc_module_begin();
set_category( CAT_SOUT );
set_subcategory( SUBCAT_SOUT_PACKETIZER );
- set_description( _("MPEG4 audio packetizer") );
+ set_description( N_("MPEG4 audio packetizer") );
set_capability( "packetizer", 50 );
set_callbacks( OpenPacketizer, ClosePacketizer );
vlc_module_end();
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys =
(decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
- {
- msg_Err( p_dec, "out of memory" );
- return VLC_EGENERIC;
- }
+ return VLC_ENOMEM;
/* Misc init */
p_sys->i_state = STATE_NOSYNC;
aout_DateSet( &p_sys->end_date, 0 );
- p_sys->bytestream = block_BytestreamInit( p_dec );
+ p_sys->bytestream = block_BytestreamInit();
p_sys->i_input_rate = INPUT_RATE_DEFAULT;
- p_sys->b_latm_cfg = VLC_FALSE;
+ p_sys->b_latm_cfg = false;
/* Set output properties */
p_dec->fmt_out.i_cat = AUDIO_ES;
(( p_config[4] >> 2 ) & 0x01) ? 960 : 1024;
}
+ p_dec->fmt_out.audio.i_channels =
+ (p_config[i_index == 0x0f ? 4 : 1] >> 3) & 0x0f;
+
msg_Dbg( p_dec, "AAC %dHz %d samples/frame",
p_dec->fmt_out.audio.i_rate,
p_dec->fmt_out.audio.i_frame_length );
aout_DateInit( &p_sys->end_date, p_dec->fmt_out.audio.i_rate );
- p_dec->fmt_out.audio.i_channels = p_dec->fmt_in.audio.i_channels;
p_dec->fmt_out.i_extra = p_dec->fmt_in.i_extra;
p_dec->fmt_out.p_extra = malloc( p_dec->fmt_in.i_extra );
+ if( !p_dec->fmt_out.p_extra )
+ {
+ p_dec->fmt_out.i_extra = 0;
+ return VLC_ENOMEM;
+ }
memcpy( p_dec->fmt_out.p_extra, p_dec->fmt_in.p_extra,
p_dec->fmt_in.i_extra );
/****************************************************************************
* ADTS helpers
****************************************************************************/
-static int ADTSSyncInfo( decoder_t * p_dec, const byte_t * p_buf,
+static int ADTSSyncInfo( decoder_t * p_dec, const uint8_t * p_buf,
unsigned int * pi_channels,
unsigned int * pi_sample_rate,
unsigned int * pi_frame_length,
unsigned int * pi_header_size )
{
- int i_id, i_profile, i_sample_rate_idx, i_frame_size;
- vlc_bool_t b_crc;
+ int i_profile, i_sample_rate_idx, i_frame_size;
+ bool b_crc;
/* Fixed header between frames */
- i_id = ( (p_buf[1] >> 3) & 0x01 ) ? 2 : 4;
+ //int i_id = ( (p_buf[1] >> 3) & 0x01) ? 2 : 4; /* MPEG-2 or 4 */
b_crc = !(p_buf[1] & 0x01);
i_profile = p_buf[2] >> 6;
i_sample_rate_idx = (p_buf[2] >> 2) & 0x0f;
*pi_sample_rate = pi_sample_rates[i_sample_rate_idx];
+ //private_bit = (p_buf[2] >> 1) & 0x01;
*pi_channels = ((p_buf[2] & 0x01) << 2) | ((p_buf[3] >> 6) & 0x03);
+ //original_copy = (p_buf[3] >> 5) & 0x01;
+ //home = (p_buf[3] >> 4) & 0x01;
/* Variable header */
+ //copyright_id_bit = (p_buf[3] >> 3) & 0x01;
+ //copyright_id_start = (p_buf[3] >> 2) & 0x01;
i_frame_size = ((p_buf[3] & 0x03) << 11) | (p_buf[4] << 3) |
- ((p_buf[5] >> 5) & 0x7);
- //i_raw_blocks_in_frame = (p_buf[6] & 0x02) + 1;
+ ((p_buf[5] >> 5) /*& 0x7*/);
+ //uint16_t buffer_fullness = ((p_buf[5] & 0x1f) << 6) | (p_buf[6] >> 2);
+ unsigned short i_raw_blocks_in_frame = p_buf[6] & 0x03;
if( !*pi_sample_rate || !*pi_channels || !i_frame_size )
{
+ msg_Warn( p_dec, "Invalid ADTS header" );
return 0;
}
- /* Fixme */
*pi_frame_length = 1024;
+ if( i_raw_blocks_in_frame == 0 )
+ {
+ if( b_crc )
+ {
+ msg_Warn( p_dec, "ADTS CRC not supported" );
+ //uint16_t crc = (p_buf[7] << 8) | p_buf[8];
+ }
+ }
+ else
+ {
+ msg_Err( p_dec, "Multiple blocks per frame in ADTS not supported" );
+ return 0;
+#if 0
+ int i;
+ const uint8_t *p_pos = p_buf + 7;
+ uint16_t crc_block;
+ uint16_t i_block_pos[3];
+ if( b_crc )
+ {
+ for( i = 0 ; i < i_raw_blocks_in_frame ; i++ )
+ { /* the 1st block's position is known ... */
+ i_block_pos[i] = (*p_pos << 8) | *(p_pos+1);
+ p_pos += 2;
+ }
+ crc_block = (*p_pos << 8) | *(p_pos+1);
+ p_pos += 2;
+ }
+ for( i = 0 ; i <= i_raw_blocks_in_frame ; i++ )
+ {
+ //read 1 block
+ if( b_crc )
+ {
+ msg_Err( p_dec, "ADTS CRC not supported" );
+ //uint16_t crc = (*p_pos << 8) | *(p_pos+1);
+ //p_pos += 2;
+ }
+ }
+#endif
+ }
+
+
/* Build the decoder specific info header */
if( !p_dec->fmt_out.i_extra )
{
- p_dec->fmt_out.i_extra = 2;
p_dec->fmt_out.p_extra = malloc( 2 );
+ if( !p_dec->fmt_out.p_extra )
+ {
+ p_dec->fmt_out.i_extra = 0;
+ return 0;
+ }
+ p_dec->fmt_out.i_extra = 2;
((uint8_t *)p_dec->fmt_out.p_extra)[0] =
(i_profile + 1) << 3 | (i_sample_rate_idx >> 1);
((uint8_t *)p_dec->fmt_out.p_extra)[1] =
return i_frame_size - *pi_header_size;
}
+
/****************************************************************************
* LOAS helpers
****************************************************************************/
-static int LOASSyncInfo( decoder_t *p_dec, uint8_t p_header[LOAS_HEADER_SIZE], unsigned int *pi_header_size )
+static int LOASSyncInfo( uint8_t p_header[LOAS_HEADER_SIZE], unsigned int *pi_header_size )
{
*pi_header_size = 3;
return ( ( p_header[1] & 0x1f ) << 8 ) + p_header[2];
}
+
static int Mpeg4GAProgramConfigElement( bs_t *s )
{
/* TODO compute channels count ? */
bs_skip( s, i_comment * 8 );
return 0;
}
+
static int Mpeg4GASpecificConfig( mpeg4_cfg_t *p_cfg, bs_t *s )
{
p_cfg->i_frame_length = bs_read1(s) ? 960 : 1024;
}
return 0;
}
+
static int Mpeg4ReadAudioObjectType( bs_t *s )
{
int i_type = bs_read( s, 5 );
i_type += bs_read( s, 6 );
return i_type;
}
+
static int Mpeg4ReadAudioSamplerate( bs_t *s )
{
int i_index = bs_read( s, 4 );
return pi_sample_rates[i_index];
return bs_read( s, 24 );
}
+
static int Mpeg4ReadAudioSpecificInfo( mpeg4_cfg_t *p_cfg, int *pi_extra, uint8_t *p_extra, bs_t *s, int i_max_size )
{
#if 0
memset( p_cfg, 0, sizeof(*p_cfg) );
*pi_extra = 0;
-
+
p_cfg->i_object_type = Mpeg4ReadAudioObjectType( s );
p_cfg->i_samplerate = Mpeg4ReadAudioSamplerate( s );
default:
break;
}
+
if( p_cfg->extension.i_object_type != 5 && i_max_size > 0 && i_max_size - (bs_pos(s) - i_pos_start) >= 16 &&
bs_read( s, 11 ) == 0x2b7 )
{
for( i_layer = 0; i_layer < m->pi_layers[i_program]; i_layer++ )
{
latm_stream_t *st = &m->stream[m->i_streams];
- vlc_bool_t b_previous_cfg;
+ bool b_previous_cfg;
m->pi_stream[i_program][i_layer] = m->i_streams;
st->i_program = i_program;
st->i_layer = i_layer;
- b_previous_cfg = VLC_FALSE;
+ b_previous_cfg = false;
if( i_program != 0 || i_layer != 0 )
b_previous_cfg = bs_read1( s );
/* Read the stream mux configuration if present */
if( !bs_read1( &s ) )
{
- if( !LatmReadStreamMuxConfiguration( &p_sys->latm, &s ) && p_sys->latm.i_streams > 0 )
+ if( !LatmReadStreamMuxConfiguration( &p_sys->latm, &s ) &&
+ p_sys->latm.i_streams > 0 )
{
const latm_stream_t *st = &p_sys->latm.stream[0];
{
p_dec->fmt_out.i_extra = st->i_extra;
p_dec->fmt_out.p_extra = malloc( st->i_extra );
+ if( !p_dec->fmt_out.p_extra )
+ {
+ p_dec->fmt_out.i_extra = 0;
+ return 0;
+ }
memcpy( p_dec->fmt_out.p_extra, st->extra, st->i_extra );
}
- p_sys->b_latm_cfg = VLC_TRUE;
+ p_sys->b_latm_cfg = true;
}
}
/* Wait for the configuration */
if( !p_sys->b_latm_cfg )
return 0;
- /* FIXME do we need to split the subframe into independant packet ? */
+ /* FIXME do we need to split the subframe into independent packet ? */
if( p_sys->latm.i_sub_frames > 1 )
msg_Err( p_dec, "latm sub frames not yet supported, please send a sample" );
{
pi_payload[i_program][i_layer] = st->i_frame_length / 8; /* XXX not correct */
}
- else if( st->i_frame_length_type == 3 || st->i_frame_length_type == 5 || st->i_frame_length_type == 7 )
+ else if( ( st->i_frame_length_type == 3 ) ||
+ ( st->i_frame_length_type == 5 ) ||
+ ( st->i_frame_length_type == 7 ) )
{
bs_skip( &s, 2 ); // muxSlotLengthCoded
pi_payload[i_program][i_layer] = 0; /* TODO */
{
pi_payload[i_program][i_layer] = st->i_frame_length / 8; /* XXX not correct */
}
- else if( st->i_frame_length_type == 3 || st->i_frame_length_type == 5 || st->i_frame_length_type == 7 )
+ else if( ( st->i_frame_length_type == 3 ) ||
+ ( st->i_frame_length_type == 5 ) ||
+ ( st->i_frame_length_type == 7 ) )
{
bs_read( &s, 2 ); // muxSlotLengthCoded
}
}
/* Check if frame is valid and get frame info */
- p_sys->i_frame_size = LOASSyncInfo( p_dec, p_header, &p_sys->i_header_size );
+ p_sys->i_frame_size = LOASSyncInfo( p_header, &p_sys->i_header_size );
}
if( p_sys->i_frame_size <= 0 )
case STATE_NEXT_SYNC:
/* TODO: If p_block == NULL, flush the buffer without checking the
* next sync word */
+ if( p_sys->bytestream.p_block == NULL )
+ {
+ p_sys->i_state = STATE_NOSYNC;
+ block_BytestreamFlush( &p_sys->bytestream );
+ return NULL;
+ }
/* Check if next expected frame contains the sync word */
if( block_PeekOffsetBytes( &p_sys->bytestream, p_sys->i_frame_size
return NULL;
}
- assert( p_sys->i_type == TYPE_ADTS || p_sys->i_type == TYPE_LOAS );
- if( ( p_sys->i_type == TYPE_ADTS && ( p_header[0] != 0xff || (p_header[1] & 0xf6) != 0xf0 ) ) ||
- ( p_sys->i_type == TYPE_LOAS && ( p_header[0] != 0x56 || (p_header[1] & 0xe0) != 0xe0 ) ) )
+ assert( (p_sys->i_type == TYPE_ADTS) || (p_sys->i_type == TYPE_LOAS) );
+ if( ( ( p_sys->i_type == TYPE_ADTS ) &&
+ ( p_header[0] != 0xff || (p_header[1] & 0xf6) != 0xf0 ) ) ||
+ ( ( p_sys->i_type == TYPE_LOAS ) &&
+ ( p_header[0] != 0x56 || (p_header[1] & 0xe0) != 0xe0 ) ) )
{
msg_Dbg( p_dec, "emulated sync word "
"(no sync on following frame)" );
p_out_buffer = block_New( p_dec, p_sys->i_frame_size );
if( !p_out_buffer )
{
- //p_dec->b_error = VLC_TRUE;
+ //p_dec->b_error = true;
return NULL;
}
p_buf = p_out_buffer->p_buffer;
return NULL;
}
-
/*****************************************************************************
* SetupBuffer:
*****************************************************************************/
free( p_dec->p_sys );
}
-
-
projects / vlc / blobdiff