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vlc-2-2
Commit 89646284 authored by Rafaël Carré's avatar Rafaël Carré
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AAC packetizer: deindent state machine switch

parent 7e52cd8a
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Showing with 127 additions and 137 deletions
modules/packetizer/mpeg4audio.c
View file @ 89646284
......@@ -895,163 +895,153 @@ static block_t *PacketizeStreamBlock(decoder_t *p_dec, block_t **pp_block)
block_BytestreamPush(&p_sys->bytestream, *pp_block);
for (;;)
{
switch(p_sys->i_state)
{
for (;;) switch(p_sys->i_state) {
case STATE_NOSYNC:
while (block_PeekBytes(&p_sys->bytestream, p_header, 2) == VLC_SUCCESS) {
/* Look for sync word - should be 0xfff(adts) or 0x2b7(loas) */
if (p_header[0] == 0xff && (p_header[1] & 0xf6) == 0xf0) {
if (p_sys->i_type != TYPE_ADTS)
msg_Dbg(p_dec, "detected ADTS format");
p_sys->i_state = STATE_SYNC;
p_sys->i_type = TYPE_ADTS;
break;
} else if (p_header[0] == 0x56 && (p_header[1] & 0xe0) == 0xe0) {
if (p_sys->i_type != TYPE_LOAS)
msg_Dbg(p_dec, "detected LOAS format");
case STATE_NOSYNC:
while (block_PeekBytes(&p_sys->bytestream, p_header, 2)
== VLC_SUCCESS)
{
/* Look for sync word - should be 0xfff(adts) or 0x2b7(loas) */
if (p_header[0] == 0xff && (p_header[1] & 0xf6) == 0xf0) {
if (p_sys->i_type != TYPE_ADTS)
msg_Dbg(p_dec, "detected ADTS format");
p_sys->i_state = STATE_SYNC;
p_sys->i_type = TYPE_ADTS;
break;
} else if (p_header[0] == 0x56 && (p_header[1] & 0xe0) == 0xe0) {
if (p_sys->i_type != TYPE_LOAS)
msg_Dbg(p_dec, "detected LOAS format");
p_sys->i_state = STATE_SYNC;
p_sys->i_type = TYPE_LOAS;
break;
}
block_SkipByte(&p_sys->bytestream);
p_sys->i_state = STATE_SYNC;
p_sys->i_type = TYPE_LOAS;
break;
}
if (p_sys->i_state != STATE_SYNC) {
block_BytestreamFlush(&p_sys->bytestream);
block_SkipByte(&p_sys->bytestream);
}
if (p_sys->i_state != STATE_SYNC) {
block_BytestreamFlush(&p_sys->bytestream);
/* Need more data */
return NULL;
}
/* Need more data */
return NULL;
}
case STATE_SYNC:
/* New frame, set the Presentation Time Stamp */
p_sys->i_pts = p_sys->bytestream.p_block->i_pts;
if (p_sys->i_pts > VLC_TS_INVALID &&
case STATE_SYNC:
/* New frame, set the Presentation Time Stamp */
p_sys->i_pts = p_sys->bytestream.p_block->i_pts;
if (p_sys->i_pts > VLC_TS_INVALID &&
p_sys->i_pts != date_Get(&p_sys->end_date))
date_Set(&p_sys->end_date, p_sys->i_pts);
p_sys->i_state = STATE_HEADER;
break;
case STATE_HEADER:
if (p_sys->i_type == TYPE_ADTS) {
/* Get ADTS frame header (ADTS_HEADER_SIZE bytes) */
if (block_PeekBytes(&p_sys->bytestream, p_header,
ADTS_HEADER_SIZE) != VLC_SUCCESS)
return NULL; /* Need more data */
/* Check if frame is valid and get frame info */
p_sys->i_frame_size = ADTSSyncInfo(p_dec, p_header,
&p_sys->i_channels,
&p_sys->i_rate,
&p_sys->i_frame_length,
&p_sys->i_header_size);
} else {
assert(p_sys->i_type == TYPE_LOAS);
/* Get LOAS frame header (LOAS_HEADER_SIZE bytes) */
if (block_PeekBytes(&p_sys->bytestream, p_header,
LOAS_HEADER_SIZE) != VLC_SUCCESS)
return NULL; /* Need more data */
/* Check if frame is valid and get frame info */
p_sys->i_frame_size = LOASSyncInfo(p_header, &p_sys->i_header_size);
}
if (p_sys->i_frame_size <= 0) {
msg_Dbg(p_dec, "emulated sync word");
block_SkipByte(&p_sys->bytestream);
p_sys->i_state = STATE_NOSYNC;
break;
}
p_sys->i_state = STATE_NEXT_SYNC;
date_Set(&p_sys->end_date, p_sys->i_pts);
p_sys->i_state = STATE_HEADER;
break;
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;
}
case STATE_HEADER:
if (p_sys->i_type == TYPE_ADTS) {
/* Get ADTS frame header (ADTS_HEADER_SIZE bytes) */
if (block_PeekBytes(&p_sys->bytestream, p_header,
ADTS_HEADER_SIZE) != VLC_SUCCESS)
return NULL; /* Need more data */
/* Check if next expected frame contains the sync word */
if (block_PeekOffsetBytes(&p_sys->bytestream, p_sys->i_frame_size
+ p_sys->i_header_size, p_header, 2) != VLC_SUCCESS)
/* Check if frame is valid and get frame info */
p_sys->i_frame_size = ADTSSyncInfo(p_dec, p_header,
&p_sys->i_channels,
&p_sys->i_rate,
&p_sys->i_frame_length,
&p_sys->i_header_size);
} else {
assert(p_sys->i_type == TYPE_LOAS);
/* Get LOAS frame header (LOAS_HEADER_SIZE bytes) */
if (block_PeekBytes(&p_sys->bytestream, p_header,
LOAS_HEADER_SIZE) != VLC_SUCCESS)
return NULL; /* Need more data */
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_sys->i_state = STATE_NOSYNC;
block_SkipByte(&p_sys->bytestream);
break;
}
/* Check if frame is valid and get frame info */
p_sys->i_frame_size = LOASSyncInfo(p_header, &p_sys->i_header_size);
}
p_sys->i_state = STATE_SEND_DATA;
if (p_sys->i_frame_size <= 0) {
msg_Dbg(p_dec, "emulated sync word");
block_SkipByte(&p_sys->bytestream);
p_sys->i_state = STATE_NOSYNC;
break;
}
case STATE_GET_DATA:
/* Make sure we have enough data.
* (Not useful if we went through NEXT_SYNC) */
if (block_WaitBytes(&p_sys->bytestream, p_sys->i_frame_size +
p_sys->i_header_size) != VLC_SUCCESS)
return NULL; /* Need more data */
p_sys->i_state = STATE_SEND_DATA;
p_sys->i_state = STATE_NEXT_SYNC;
case STATE_SEND_DATA:
/* When we reach this point we already know we have enough
* data available. */
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;
}
p_out_buffer = block_Alloc(p_sys->i_frame_size);
if (!p_out_buffer) {
//p_dec->b_error = true;
return NULL;
}
p_buf = p_out_buffer->p_buffer;
/* Check if next expected frame contains the sync word */
if (block_PeekOffsetBytes(&p_sys->bytestream, p_sys->i_frame_size
+ p_sys->i_header_size, p_header, 2) != VLC_SUCCESS)
return NULL; /* Need more data */
/* Skip the ADTS/LOAS header */
block_SkipBytes(&p_sys->bytestream, p_sys->i_header_size);
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_sys->i_state = STATE_NOSYNC;
block_SkipByte(&p_sys->bytestream);
break;
}
if (p_sys->i_type == TYPE_ADTS) {
/* Copy the whole frame into the buffer */
block_GetBytes(&p_sys->bytestream, p_buf, p_sys->i_frame_size);
} else {
assert(p_sys->i_type == TYPE_LOAS);
/* Copy the whole frame into the buffer and parse/extract it */
block_GetBytes(&p_sys->bytestream, p_buf, p_sys->i_frame_size);
p_out_buffer->i_buffer = LOASParse(p_dec, p_buf, p_sys->i_frame_size);
if (p_out_buffer->i_buffer <= 0) {
if (!p_sys->b_latm_cfg)
msg_Warn(p_dec, "waiting for header");
block_Release(p_out_buffer);
p_out_buffer = NULL;
p_sys->i_state = STATE_NOSYNC;
break;
}
p_sys->i_state = STATE_SEND_DATA;
break;
case STATE_GET_DATA:
/* Make sure we have enough data.
* (Not useful if we went through NEXT_SYNC) */
if (block_WaitBytes(&p_sys->bytestream, p_sys->i_frame_size +
p_sys->i_header_size) != VLC_SUCCESS)
return NULL; /* Need more data */
p_sys->i_state = STATE_SEND_DATA;
case STATE_SEND_DATA:
/* When we reach this point we already know we have enough
* data available. */
p_out_buffer = block_Alloc(p_sys->i_frame_size);
if (!p_out_buffer) {
//p_dec->b_error = true;
return NULL;
}
p_buf = p_out_buffer->p_buffer;
/* Skip the ADTS/LOAS header */
block_SkipBytes(&p_sys->bytestream, p_sys->i_header_size);
/* Copy the whole frame into the buffer */
block_GetBytes(&p_sys->bytestream, p_buf, p_sys->i_frame_size);
if (p_sys->i_type != TYPE_ADTS) { /* parse/extract the whole frame */
assert(p_sys->i_type == TYPE_LOAS);
p_out_buffer->i_buffer = LOASParse(p_dec, p_buf, p_sys->i_frame_size);
if (p_out_buffer->i_buffer <= 0) {
if (!p_sys->b_latm_cfg)
msg_Warn(p_dec, "waiting for header");
block_Release(p_out_buffer);
p_out_buffer = NULL;
p_sys->i_state = STATE_NOSYNC;
break;
}
SetupOutput(p_dec, p_out_buffer);
/* Make sure we don't reuse the same pts twice */
if (p_sys->i_pts == p_sys->bytestream.p_block->i_pts)
p_sys->i_pts = p_sys->bytestream.p_block->i_pts = VLC_TS_INVALID;
}
SetupOutput(p_dec, p_out_buffer);
/* Make sure we don't reuse the same pts twice */
if (p_sys->i_pts == p_sys->bytestream.p_block->i_pts)
p_sys->i_pts = p_sys->bytestream.p_block->i_pts = VLC_TS_INVALID;
/* So p_block doesn't get re-added several times */
*pp_block = block_BytestreamPop(&p_sys->bytestream);
/* So p_block doesn't get re-added several times */
*pp_block = block_BytestreamPop(&p_sys->bytestream);
p_sys->i_state = STATE_NOSYNC;
p_sys->i_state = STATE_NOSYNC;
return p_out_buffer;
}
return p_out_buffer;
}
return NULL;
......
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