X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=libhb%2Fencfaac.c;h=c955199d062a7de1c52616b9767b48a8954e6ec3;hb=033e32de9c380f54c7d1362a3979da205ebc3a29;hp=a5b704f4c0732ac621556718170f88de7d8ed920;hpb=cdba71d1dca214142fdcca4c52f7672252752c2e;p=handbrake-jp%2Fhandbrake-jp-git.git
diff --git a/libhb/encfaac.c b/libhb/encfaac.c
index a5b704f4..c955199d 100644
--- a/libhb/encfaac.c
+++ b/libhb/encfaac.c
@@ -1,80 +1,159 @@
/* $Id: encfaac.c,v 1.13 2005/03/03 17:21:57 titer Exp $
This file is part of the HandBrake source code.
- Homepage: .
+ Homepage: .
It may be used under the terms of the GNU General Public License. */
#include "hb.h"
#include "faac.h"
-struct hb_work_object_s
+struct hb_work_private_s
{
- HB_WORK_COMMON;
-
hb_job_t * job;
- hb_audio_t * audio;
faacEncHandle * faac;
unsigned long input_samples;
unsigned long output_bytes;
uint8_t * buf;
-
+ uint8_t * obuf;
hb_list_t * list;
int64_t pts;
+ int64_t framedur;
+ int out_discrete_channels;
};
-/***********************************************************************
- * Local prototypes
- **********************************************************************/
-static void Close( hb_work_object_t ** _w );
-static int Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
- hb_buffer_t ** buf_out );
+int encfaacInit( hb_work_object_t *, hb_job_t * );
+int encfaacWork( hb_work_object_t *, hb_buffer_t **, hb_buffer_t ** );
+void encfaacClose( hb_work_object_t * );
+
+hb_work_object_t hb_encfaac =
+{
+ WORK_ENCFAAC,
+ "AAC encoder (libfaac)",
+ encfaacInit,
+ encfaacWork,
+ encfaacClose
+};
+
+static const int valid_rates[] =
+{
+ 22050, 24000, 32000, 44100, 48000, 0
+};
+
+static int find_samplerate( int rate )
+{
+ int i;
+
+ for ( i = 0; valid_rates[i] && rate > valid_rates[i]; ++i )
+ {
+ }
+ return i;
+}
/***********************************************************************
* hb_work_encfaac_init
***********************************************************************
*
**********************************************************************/
-hb_work_object_t * hb_work_encfaac_init( hb_job_t * job, hb_audio_t * audio )
+int encfaacInit( hb_work_object_t * w, hb_job_t * job )
{
- hb_work_object_t * w = calloc( sizeof( hb_work_object_t ), 1 );
+ hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
+ hb_audio_t * audio = w->audio;
faacEncConfigurationPtr cfg;
- w->name = strdup( "AAC encoder (libfaac)" );
- w->work = Work;
- w->close = Close;
-
- w->job = job;
- w->audio = audio;
-
- w->faac = faacEncOpen( job->arate, 2, &w->input_samples,
- &w->output_bytes );
- w->buf = malloc( w->input_samples * sizeof( float ) );
-
- cfg = faacEncGetCurrentConfiguration( w->faac );
+ uint8_t * bytes;
+ unsigned long length;
+
+ w->private_data = pv;
+
+ pv->job = job;
+
+ /* pass the number of channels used into the private work data */
+ pv->out_discrete_channels = HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(audio->config.out.mixdown);
+
+ /* if the sample rate is 'auto' and that has given us an invalid output */
+ /* rate, map it to the next highest output rate or 48K if above the highest. */
+ int rate_index = find_samplerate(audio->config.out.samplerate);
+ if ( audio->config.out.samplerate != valid_rates[rate_index] )
+ {
+ int rate = valid_rates[valid_rates[rate_index]? rate_index : rate_index - 1];
+ hb_log( "encfaac changing output samplerate from %d to %d",
+ audio->config.out.samplerate, rate );
+ audio->config.out.samplerate = rate;
+
+ /* if the new rate is over the max bandwidth per channel limit */
+ /* lower the bandwidth. */
+ double bw = audio->config.out.bitrate * 1000 / pv->out_discrete_channels;
+ if ( bw > (double)rate * (6144./1024.) )
+ {
+ int newbr = (double)rate * (6.144/1024.) * pv->out_discrete_channels;
+ hb_log( "encfaac changing output bitrate from %d to %d",
+ audio->config.out.bitrate, newbr );
+ audio->config.out.bitrate = newbr;
+ }
+ }
+
+ pv->faac = faacEncOpen( audio->config.out.samplerate, pv->out_discrete_channels,
+ &pv->input_samples, &pv->output_bytes );
+ pv->buf = malloc( pv->input_samples * sizeof( float ) );
+ pv->obuf = malloc( pv->output_bytes );
+ pv->framedur = 90000LL * pv->input_samples /
+ ( audio->config.out.samplerate * pv->out_discrete_channels );
+
+ cfg = faacEncGetCurrentConfiguration( pv->faac );
cfg->mpegVersion = MPEG4;
cfg->aacObjectType = LOW;
cfg->allowMidside = 1;
- cfg->useLfe = 0;
+
+ if (pv->out_discrete_channels == 6) {
+ /* we are preserving 5.1 audio into 6-channel AAC,
+ so indicate that we have an lfe channel */
+ cfg->useLfe = 1;
+ } else {
+ cfg->useLfe = 0;
+ }
+
cfg->useTns = 0;
- cfg->bitRate = job->abitrate * 500; /* Per channel */
+ cfg->bitRate = audio->config.out.bitrate * 1000 / pv->out_discrete_channels; /* Per channel */
cfg->bandWidth = 0;
cfg->outputFormat = 0;
cfg->inputFormat = FAAC_INPUT_FLOAT;
- if( !faacEncSetConfiguration( w->faac, cfg ) )
+
+ if (audio->config.out.mixdown == HB_AMIXDOWN_6CH && audio->config.in.codec == HB_ACODEC_AC3)
+ {
+ /* we are preserving 5.1 AC-3 audio into 6-channel AAC, and need to
+ re-map the output of deca52 into our own mapping - the mapping
+ below is the default mapping expected by QuickTime */
+ /* DTS output from libdca is already in the right mapping for QuickTime */
+ /* This doesn't seem to be correct for VLC on Linux */
+ cfg->channel_map[0] = 2;
+ cfg->channel_map[1] = 1;
+ cfg->channel_map[2] = 3;
+ cfg->channel_map[3] = 4;
+ cfg->channel_map[4] = 5;
+ cfg->channel_map[5] = 0;
+ }
+
+ if( !faacEncSetConfiguration( pv->faac, cfg ) )
{
hb_log( "faacEncSetConfiguration failed" );
+ *job->die = 1;
+ return 0;
}
- if( faacEncGetDecoderSpecificInfo( w->faac, &audio->config.faac.decinfo,
- &audio->config.faac.size ) < 0 )
+
+ if( faacEncGetDecoderSpecificInfo( pv->faac, &bytes, &length ) < 0 )
{
hb_log( "faacEncGetDecoderSpecificInfo failed" );
+ *job->die = 1;
+ return 0;
}
+ memcpy( w->config->aac.bytes, bytes, length );
+ w->config->aac.length = length;
+ free( bytes );
- w->list = hb_list_init();
- w->pts = -1;
+ pv->list = hb_list_init();
- return w;
+ return 0;
}
/***********************************************************************
@@ -82,18 +161,32 @@ hb_work_object_t * hb_work_encfaac_init( hb_job_t * job, hb_audio_t * audio )
***********************************************************************
*
**********************************************************************/
-static void Close( hb_work_object_t ** _w )
+void encfaacClose( hb_work_object_t * w )
{
- hb_work_object_t * w = *_w;
-
- faacEncClose( w->faac );
- free( w->buf );
- hb_list_empty( &w->list );
- free( w->audio->config.faac.decinfo );
+ hb_work_private_t * pv = w->private_data;
+ if ( pv )
+ {
+ if ( pv->faac )
+ {
+ faacEncClose( pv->faac );
+ pv->faac = NULL;
+ }
+ if ( pv->buf )
+ {
+ free( pv->buf );
+ pv->buf = NULL;
+ }
+ if ( pv->obuf )
+ {
+ free( pv->obuf );
+ pv->obuf = NULL;
+ }
+ if ( pv->list )
+ hb_list_empty( &pv->list );
- free( w->name );
- free( w );
- *_w = NULL;
+ free( pv );
+ w->private_data = NULL;
+ }
}
/***********************************************************************
@@ -103,41 +196,75 @@ static void Close( hb_work_object_t ** _w )
**********************************************************************/
static hb_buffer_t * Encode( hb_work_object_t * w )
{
- hb_buffer_t * buf;
- uint64_t pts;
- int pos;
+ hb_work_private_t * pv = w->private_data;
- if( hb_list_bytes( w->list ) < w->input_samples * sizeof( float ) )
+ if( hb_list_bytes( pv->list ) < pv->input_samples * sizeof( float ) )
{
/* Need more data */
return NULL;
}
- hb_list_getbytes( w->list, w->buf, w->input_samples * sizeof( float ),
+ uint64_t pts, pos;
+ hb_list_getbytes( pv->list, pv->buf, pv->input_samples * sizeof( float ),
&pts, &pos );
+ int size = faacEncEncode( pv->faac, (int32_t *)pv->buf, pv->input_samples,
+ pv->obuf, pv->output_bytes );
- buf = hb_buffer_init( w->output_bytes );
- buf->start = pts + 90000 * pos / 2 / sizeof( float ) / w->job->arate;
- buf->stop = buf->start + 90000 * w->input_samples / w->job->arate / 2;
- buf->size = faacEncEncode( w->faac, (int32_t *) w->buf,
- w->input_samples, buf->data, w->output_bytes );
- buf->key = 1;
-
- if( !buf->size )
+ // AAC needs four frames before it can start encoding so we'll get nothing
+ // on the first three calls to the encoder.
+ if ( size > 0 )
{
- /* Encoding was successful but we got no data. Try to encode
- more */
- hb_buffer_close( &buf );
- return Encode( w );
+ hb_buffer_t * buf = hb_buffer_init( size );
+ memcpy( buf->data, pv->obuf, size );
+ buf->size = size;
+ buf->start = pv->pts;
+ pv->pts += pv->framedur;
+ buf->stop = pv->pts;
+ buf->frametype = HB_FRAME_AUDIO;
+ return buf;
}
- else if( buf->size < 0 )
+ return NULL;
+}
+
+static hb_buffer_t *Flush( hb_work_object_t *w, hb_buffer_t *bufin )
+{
+ hb_work_private_t *pv = w->private_data;
+
+ // pad whatever data we have out to four input frames.
+ int nbytes = hb_list_bytes( pv->list );
+ int pad = pv->input_samples * sizeof(float) * 4 - nbytes;
+ if ( pad > 0 )
{
- hb_log( "faacEncEncode failed" );
- hb_buffer_close( &buf );
- return NULL;
+ hb_buffer_t *tmp = hb_buffer_init( pad );
+ memset( tmp->data, 0, pad );
+ hb_list_add( pv->list, tmp );
}
- return buf;
+ // There are up to three frames buffered in the encoder plus one
+ // in our list buffer so four calls to Encode should get them all.
+ hb_buffer_t *bufout = NULL, *buf = NULL;
+ while ( hb_list_bytes( pv->list ) >= pv->input_samples * sizeof(float) )
+ {
+ hb_buffer_t *b = Encode( w );
+ if ( b )
+ {
+ if ( bufout == NULL )
+ {
+ bufout = b;
+ }
+ else
+ {
+ buf->next = b;
+ }
+ buf = b;
+ }
+ }
+ // add the eof marker to the end of our buf chain
+ if ( buf )
+ buf->next = bufin;
+ else
+ bufout = bufin;
+ return bufout;
}
/***********************************************************************
@@ -145,12 +272,23 @@ static hb_buffer_t * Encode( hb_work_object_t * w )
***********************************************************************
*
**********************************************************************/
-static int Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
+int encfaacWork( hb_work_object_t * w, hb_buffer_t ** buf_in,
hb_buffer_t ** buf_out )
{
+ hb_work_private_t * pv = w->private_data;
hb_buffer_t * buf;
- hb_list_add( w->list, *buf_in );
+ if ( (*buf_in)->size <= 0 )
+ {
+ // EOF on input. Finish encoding what we have buffered then send
+ // it & the eof downstream.
+
+ *buf_out = Flush( w, *buf_in );
+ *buf_in = NULL;
+ return HB_WORK_DONE;
+ }
+
+ hb_list_add( pv->list, *buf_in );
*buf_in = NULL;
*buf_out = buf = Encode( w );
@@ -160,7 +298,7 @@ static int Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
buf->next = Encode( w );
buf = buf->next;
}
-
+
return HB_WORK_OK;
}