/* $Id: decavcodec.c,v 1.6 2005/03/06 04:08:54 titer Exp $
This file is part of the HandBrake source code.
- Homepage: <http://handbrake.m0k.org/>.
+ Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
#include "hb.h"
-#include "ffmpeg/avcodec.h"
+#include "libavcodec/avcodec.h"
+#include "libavformat/avformat.h"
-int decavcodecInit( hb_work_object_t *, hb_job_t * );
-int decavcodecWork( hb_work_object_t *, hb_buffer_t **, hb_buffer_t ** );
-void decavcodecClose( hb_work_object_t * );
+static int decavcodecInit( hb_work_object_t *, hb_job_t * );
+static int decavcodecWork( hb_work_object_t *, hb_buffer_t **, hb_buffer_t ** );
+static void decavcodecClose( hb_work_object_t * );
+static int decavcodecInfo( hb_work_object_t *, hb_work_info_t * );
+static int decavcodecBSInfo( hb_work_object_t *, const hb_buffer_t *, hb_work_info_t * );
hb_work_object_t hb_decavcodec =
{
"MPGA decoder (libavcodec)",
decavcodecInit,
decavcodecWork,
- decavcodecClose
+ decavcodecClose,
+ decavcodecInfo,
+ decavcodecBSInfo
};
struct hb_work_private_s
{
- hb_job_t * job;
-
- AVCodecContext * context;
- int64_t pts_last;
+ hb_job_t *job;
+ AVCodecContext *context;
AVCodecParserContext *parser;
+ hb_list_t *list;
+ double pts_next; // next pts we expect to generate
+ int64_t pts; // (video) pts passing from parser to decoder
+ int64_t chap_time; // time of next chap mark (if new_chap != 0)
+ int new_chap;
+ int ignore_pts; // workaround M$ bugs
+ int nframes;
+ int ndrops;
+ double duration; // frame duration (for video)
};
+
/***********************************************************************
* hb_work_decavcodec_init
***********************************************************************
*
**********************************************************************/
-int decavcodecInit( hb_work_object_t * w, hb_job_t * job )
+static int decavcodecInit( hb_work_object_t * w, hb_job_t * job )
{
AVCodec * codec;
pv->job = job;
- codec = avcodec_find_decoder( CODEC_ID_MP2 );
- pv->parser = av_parser_init(CODEC_ID_MP2);
+ int codec_id = w->codec_param;
+ /*XXX*/
+ if ( codec_id == 0 )
+ codec_id = CODEC_ID_MP2;
+ codec = avcodec_find_decoder( codec_id );
+ pv->parser = av_parser_init( codec_id );
pv->context = avcodec_alloc_context();
avcodec_open( pv->context, codec );
- pv->pts_last = -1;
return 0;
}
***********************************************************************
*
**********************************************************************/
-void decavcodecClose( hb_work_object_t * w )
+static void decavcodecClose( hb_work_object_t * w )
{
hb_work_private_t * pv = w->private_data;
- av_parser_close(pv->parser);
- avcodec_close( pv->context );
+ if ( pv->parser )
+ {
+ av_parser_close(pv->parser);
+ }
+ if ( pv->context && pv->context->codec )
+ {
+ avcodec_close( pv->context );
+ }
+ if ( pv->list )
+ {
+ hb_list_close( &pv->list );
+ }
}
/***********************************************************************
***********************************************************************
*
**********************************************************************/
-int decavcodecWork( hb_work_object_t * w, hb_buffer_t ** buf_in,
+static int decavcodecWork( hb_work_object_t * w, hb_buffer_t ** buf_in,
hb_buffer_t ** buf_out )
{
hb_work_private_t * pv = w->private_data;
*buf_out = NULL;
- if( in->start < 0 ||
- ( pv->pts_last > 0 &&
- in->start > pv->pts_last &&
- in->start - pv->pts_last < 5000 ) ) /* Hacky */
- {
- cur = pv->pts_last;
- }
- else
- {
- cur = in->start;
- }
+ cur = ( in->start < 0 )? pv->pts_next : in->start;
pos = 0;
while( pos < in->size )
{
- len = av_parser_parse(pv->parser, pv->context,&parser_output_buffer,&parser_output_buffer_len,in->data + pos,in->size - pos,cur,cur);
-
+ len = av_parser_parse( pv->parser, pv->context,
+ &parser_output_buffer, &parser_output_buffer_len,
+ in->data + pos, in->size - pos, cur, cur );
out_size = 0;
uncompressed_len = 0;
if (parser_output_buffer_len)
- uncompressed_len = avcodec_decode_audio( pv->context, buffer, &out_size,
- parser_output_buffer, parser_output_buffer_len );
+ {
+ out_size = sizeof(buffer);
+ uncompressed_len = avcodec_decode_audio2( pv->context, buffer,
+ &out_size,
+ parser_output_buffer,
+ parser_output_buffer_len );
+ }
if( out_size )
{
short * s16;
pos += len;
}
- pv->pts_last = cur;
+ pv->pts_next = cur;
+
+ return HB_WORK_OK;
+}
+
+static int decavcodecInfo( hb_work_object_t *w, hb_work_info_t *info )
+{
+ hb_work_private_t *pv = w->private_data;
+
+ memset( info, 0, sizeof(*info) );
+
+ if ( pv && pv->context )
+ {
+ AVCodecContext *context = pv->context;
+ info->bitrate = context->bit_rate;
+ info->rate = context->time_base.num;
+ info->rate_base = context->time_base.den;
+ info->profile = context->profile;
+ info->level = context->level;
+ return 1;
+ }
+ return 0;
+}
+
+static int decavcodecBSInfo( hb_work_object_t *w, const hb_buffer_t *buf,
+ hb_work_info_t *info )
+{
+ hb_work_private_t *pv = w->private_data;
+
+ memset( info, 0, sizeof(*info) );
+
+ if ( pv && pv->context )
+ {
+ return decavcodecInfo( w, info );
+ }
+ // XXX
+ // We should parse the bitstream to find its parameters but for right
+ // now we just return dummy values if there's a codec that will handle it.
+ AVCodec *codec = avcodec_find_decoder( w->codec_param? w->codec_param :
+ CODEC_ID_MP2 );
+ if ( codec )
+ {
+ static char codec_name[64];
+
+ info->name = strncpy( codec_name, codec->name, sizeof(codec_name)-1 );
+ info->bitrate = 384000;
+ info->rate = 48000;
+ info->rate_base = 1;
+ info->channel_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ return 1;
+ }
+ return -1;
+}
+
+/* -------------------------------------------------------------
+ * General purpose video decoder using libavcodec
+ */
+
+static uint8_t *copy_plane( uint8_t *dst, uint8_t* src, int dstride, int sstride,
+ int h )
+{
+ if ( dstride == sstride )
+ {
+ memcpy( dst, src, dstride * h );
+ return dst + dstride * h;
+ }
+ int lbytes = dstride <= sstride? dstride : sstride;
+ while ( --h >= 0 )
+ {
+ memcpy( dst, src, lbytes );
+ src += sstride;
+ dst += dstride;
+ }
+ return dst;
+}
+
+/* Note: assumes frame format is PIX_FMT_YUV420P */
+static hb_buffer_t *copy_frame( AVCodecContext *context, AVFrame *frame )
+{
+ int w = context->width, h = context->height;
+ hb_buffer_t *buf = hb_buffer_init( w * h * 3 / 2 );
+ uint8_t *dst = buf->data;
+
+ dst = copy_plane( dst, frame->data[0], w, frame->linesize[0], h );
+ w >>= 1; h >>= 1;
+ dst = copy_plane( dst, frame->data[1], w, frame->linesize[1], h );
+ dst = copy_plane( dst, frame->data[2], w, frame->linesize[2], h );
+
+ return buf;
+}
+
+static int get_frame_buf( AVCodecContext *context, AVFrame *frame )
+{
+ hb_work_private_t *pv = context->opaque;
+ frame->pts = pv->pts;
+ pv->pts = -1;
+
+ return avcodec_default_get_buffer( context, frame );
+}
+
+static void log_chapter( hb_work_private_t *pv, int chap_num, int64_t pts )
+{
+ hb_chapter_t *c = hb_list_item( pv->job->title->list_chapter, chap_num - 1 );
+ hb_log( "%s: \"%s\" (%d) at frame %u time %lld", pv->context->codec->name,
+ c->title, chap_num, pv->nframes, pts );
+}
+
+static int decodeFrame( hb_work_private_t *pv, uint8_t *data, int size )
+{
+ int got_picture;
+ AVFrame frame;
+
+ avcodec_decode_video( pv->context, &frame, &got_picture, data, size );
+ if( got_picture )
+ {
+ // ffmpeg makes it hard to attach a pts to a frame. if the MPEG ES
+ // packet had a pts we handed it to av_parser_parse (if the packet had
+ // no pts we set it to -1 but before the parse we can't distinguish between
+ // the start of a video frame with no pts & an intermediate packet of
+ // some frame which never has a pts). we hope that when parse returns
+ // the frame to us the pts we originally handed it will be in parser->pts.
+ // we put this pts into pv->pts so that when a avcodec_decode_video
+ // finally gets around to allocating an AVFrame to hold the decoded
+ // frame we can stuff that pts into the frame. if all of these relays
+ // worked at this point frame.pts should hold the frame's pts from the
+ // original data stream or -1 if it didn't have one. in the latter case
+ // we generate the next pts in sequence for it.
+ double pts = frame.pts;
+ if ( pts < 0 )
+ {
+ pts = pv->pts_next;
+ }
+ if ( pv->duration == 0 )
+ {
+ pv->duration = 90000. * pv->context->time_base.num /
+ pv->context->time_base.den;
+ }
+ double frame_dur = pv->duration;
+ frame_dur += frame.repeat_pict * frame_dur * 0.5;
+ pv->pts_next = pts + frame_dur;
+
+ hb_buffer_t *buf = copy_frame( pv->context, &frame );
+ buf->start = pts;
+
+ if ( pv->new_chap && buf->start >= pv->chap_time )
+ {
+ buf->new_chap = pv->new_chap;
+ pv->new_chap = 0;
+ pv->chap_time = 0;
+ if ( pv->job )
+ {
+ log_chapter( pv, buf->new_chap, buf->start );
+ }
+ }
+ else if ( pv->job && pv->nframes == 0 )
+ {
+ log_chapter( pv, pv->job->chapter_start, buf->start );
+ }
+ hb_list_add( pv->list, buf );
+ ++pv->nframes;
+ }
+ return got_picture;
+}
+
+static void decodeVideo( hb_work_private_t *pv, uint8_t *data, int size,
+ int64_t pts, int64_t dts )
+{
+ /*
+ * The following loop is a do..while because we need to handle both
+ * data & the flush at the end (signaled by size=0). At the end there's
+ * generally a frame in the parser & one or more frames in the decoder
+ * (depending on the bframes setting).
+ */
+ int pos = 0;
+ do {
+ uint8_t *pout;
+ int pout_len;
+ int len = av_parser_parse( pv->parser, pv->context, &pout, &pout_len,
+ data + pos, size - pos, pts, dts );
+ pos += len;
+
+ if ( pout_len > 0 )
+ {
+ pv->pts = pv->parser->pts;
+ decodeFrame( pv, pout, pout_len );
+ }
+ } while ( pos < size );
+
+ /* the stuff above flushed the parser, now flush the decoder */
+ while ( size == 0 && decodeFrame( pv, NULL, 0 ) )
+ {
+ }
+}
+
+static hb_buffer_t *link_buf_list( hb_work_private_t *pv )
+{
+ hb_buffer_t *head = hb_list_item( pv->list, 0 );
+
+ if ( head )
+ {
+ hb_list_rem( pv->list, head );
+
+ hb_buffer_t *last = head, *buf;
+
+ while ( ( buf = hb_list_item( pv->list, 0 ) ) != NULL )
+ {
+ hb_list_rem( pv->list, buf );
+ last->next = buf;
+ last = buf;
+ }
+ }
+ return head;
+}
+
+
+static int decavcodecvInit( hb_work_object_t * w, hb_job_t * job )
+{
+
+ hb_work_private_t *pv = calloc( 1, sizeof( hb_work_private_t ) );
+ w->private_data = pv;
+ pv->job = job;
+ pv->list = hb_list_init();
+
+ int codec_id = w->codec_param;
+ pv->parser = av_parser_init( codec_id );
+ pv->context = avcodec_alloc_context2( CODEC_TYPE_VIDEO );
+
+ /* we have to wrap ffmpeg's get_buffer to be able to set the pts (?!) */
+ pv->context->opaque = pv;
+ pv->context->get_buffer = get_frame_buf;
+
+ AVCodec *codec = avcodec_find_decoder( codec_id );
+
+ // we can't call the avstream funcs but the read_header func in the
+ // AVInputFormat may set up some state in the AVContext. In particular
+ // vc1t_read_header allocates 'extradata' to deal with header issues
+ // related to Microsoft's bizarre engineering notions. We alloc a chunk
+ // of space to make vc1 work then associate the codec with the context.
+ pv->context->extradata_size = 32;
+ pv->context->extradata = av_malloc(pv->context->extradata_size);
+ avcodec_open( pv->context, codec );
+
+ return 0;
+}
+
+static int decavcodecvWork( 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 *in = *buf_in;
+ int64_t pts = -1;
+ int64_t dts = pts;
+
+ *buf_in = NULL;
+
+ /* if we got an empty buffer signaling end-of-stream send it downstream */
+ if ( in->size == 0 )
+ {
+ decodeVideo( pv, in->data, in->size, pts, dts );
+ hb_list_add( pv->list, in );
+ *buf_out = link_buf_list( pv );
+ hb_log( "%s done: %d frames", pv->context->codec->name, pv->nframes );
+ return HB_WORK_DONE;
+ }
+
+ if( in->start >= 0 )
+ {
+ pts = in->start;
+ dts = in->renderOffset;
+ }
+ if ( in->new_chap )
+ {
+ pv->new_chap = in->new_chap;
+ pv->chap_time = pts >= 0? pts : pv->pts_next;
+ }
+ decodeVideo( pv, in->data, in->size, pts, dts );
+ hb_buffer_close( &in );
+ *buf_out = link_buf_list( pv );
+ return HB_WORK_OK;
+}
+
+static int decavcodecvInfo( hb_work_object_t *w, hb_work_info_t *info )
+{
+ hb_work_private_t *pv = w->private_data;
+
+ memset( info, 0, sizeof(*info) );
+
+ if ( pv && pv->context )
+ {
+ AVCodecContext *context = pv->context;
+ info->bitrate = context->bit_rate;
+ info->width = context->width;
+ info->height = context->height;
+
+ /* ffmpeg gives the frame rate in frames per second while HB wants
+ * it in units of the 27MHz MPEG clock. */
+ info->rate = 27000000;
+ info->rate_base = (int64_t)context->time_base.num * 27000000LL /
+ context->time_base.den;
+
+ /* Sometimes there's no pixel aspect set in the source. In that case,
+ assume a 1:1 PAR. Otherwise, preserve the source PAR. */
+ info->pixel_aspect_width = context->sample_aspect_ratio.num ?
+ context->sample_aspect_ratio.num : 1;
+ info->pixel_aspect_height = context->sample_aspect_ratio.den ?
+ context->sample_aspect_ratio.den : 1;
+
+ /* ffmpeg returns the Pixel Aspect Ratio (PAR). Handbrake wants the
+ * Display Aspect Ratio so we convert by scaling by the Storage
+ * Aspect Ratio (w/h). We do the calc in floating point to get the
+ * rounding right. We round in the second decimal digit because we
+ * scale the (integer) aspect by 9 to preserve the 1st digit. */
+ info->aspect = ( (double)info->pixel_aspect_width *
+ (double)context->width /
+ (double)info->pixel_aspect_height /
+ (double)context->height + 0.05 ) * HB_ASPECT_BASE;
+
+ info->profile = context->profile;
+ info->level = context->level;
+ info->name = context->codec->name;
+ return 1;
+ }
+ return 0;
+}
+
+static int decavcodecvBSInfo( hb_work_object_t *w, const hb_buffer_t *buf,
+ hb_work_info_t *info )
+{
+ return 0;
+}
+
+hb_work_object_t hb_decavcodecv =
+{
+ WORK_DECAVCODECV,
+ "Video decoder (libavcodec)",
+ decavcodecvInit,
+ decavcodecvWork,
+ decavcodecClose,
+ decavcodecvInfo,
+ decavcodecvBSInfo
+};
+
+
+// This is a special decoder for ffmpeg streams. The ffmpeg stream reader
+// includes a parser and passes information from the parser to the decoder
+// via a codec context kept in the AVStream of the reader's AVFormatContext.
+// We *have* to use that codec context to decode the stream or we'll get
+// garbage. ffmpeg_title_scan put a cookie that can be used to get to that
+// codec context in our codec_param.
+
+// this routine gets the appropriate context pointer from the ffmpeg
+// stream reader. it can't be called until we get the first buffer because
+// we can't guarantee that reader will be called before the our init
+// routine and if our init is called first we'll get a pointer to the
+// old scan stream (which has already been closed).
+static void init_ffmpeg_context( hb_work_object_t *w )
+{
+ hb_work_private_t *pv = w->private_data;
+ pv->context = hb_ffmpeg_context( w->codec_param );
+
+ // during scan the decoder gets closed & reopened which will
+ // close the codec so reopen it if it's not there
+ if ( ! pv->context->codec )
+ {
+ AVCodec *codec = avcodec_find_decoder( pv->context->codec_id );
+ avcodec_open( pv->context, codec );
+ }
+ // set up our best guess at the frame duration.
+ // the frame rate in the codec seems to be bogus but it's ok in the stream.
+ AVStream *st = hb_ffmpeg_avstream( w->codec_param );
+ AVRational tb = st->time_base;
+ if ( st->r_frame_rate.den && st->r_frame_rate.num )
+ {
+ tb.num = st->r_frame_rate.den;
+ tb.den = st->r_frame_rate.num;
+ }
+ pv->duration = 90000. * tb.num / tb.den;
+
+ // we have to wrap ffmpeg's get_buffer to be able to set the pts (?!)
+ pv->context->opaque = pv;
+ pv->context->get_buffer = get_frame_buf;
+}
+
+static void prepare_ffmpeg_buffer( hb_buffer_t * in )
+{
+ // ffmpeg requires an extra 8 bytes of zero at the end of the buffer and
+ // will seg fault in odd, data dependent ways if it's not there. (my guess
+ // is this is a case of a local performance optimization creating a global
+ // performance degradation since all the time wasted by extraneous data
+ // copies & memory zeroing has to be huge compared to the minor reduction
+ // in inner-loop instructions this affords - modern cpus bottleneck on
+ // memory bandwidth not instruction bandwidth).
+ if ( in->size + FF_INPUT_BUFFER_PADDING_SIZE > in->alloc )
+ {
+ // have to realloc to add the padding
+ hb_buffer_realloc( in, in->size + FF_INPUT_BUFFER_PADDING_SIZE );
+ }
+ memset( in->data + in->size, 0, FF_INPUT_BUFFER_PADDING_SIZE );
+}
+
+static int decavcodecviInit( hb_work_object_t * w, hb_job_t * job )
+{
+
+ hb_work_private_t *pv = calloc( 1, sizeof( hb_work_private_t ) );
+ w->private_data = pv;
+ pv->job = job;
+ pv->list = hb_list_init();
+
+ return 0;
+}
+
+static int decavcodecviWork( hb_work_object_t * w, hb_buffer_t ** buf_in,
+ hb_buffer_t ** buf_out )
+{
+ hb_work_private_t *pv = w->private_data;
+ if ( ! pv->context )
+ {
+ init_ffmpeg_context( w );
+
+ switch ( pv->context->codec_id )
+ {
+ // These are the only formats whose timestamps we'll believe.
+ // All others are treated as CFR (i.e., we take the first timestamp
+ // then generate all the others from the frame rate). The reason for
+ // this is that the M$ encoders are so frigging buggy with garbage
+ // like packed b-frames (vfw divx mpeg4) that believing their timestamps
+ // results in discarding more than half the video frames because they'll
+ // be out of sequence (and attempting to reseqence them doesn't work
+ // because it's the timestamps that are wrong, not the decoded frame
+ // order). All hail Redmond, ancestral home of the rich & stupid.
+ case CODEC_ID_MPEG2VIDEO:
+ case CODEC_ID_RAWVIDEO:
+ case CODEC_ID_H264:
+ case CODEC_ID_VC1:
+ break;
+
+ default:
+ pv->ignore_pts = 1;
+ break;
+ }
+ }
+ hb_buffer_t *in = *buf_in;
+ int64_t pts = -1;
+
+ *buf_in = NULL;
+
+ /* if we got an empty buffer signaling end-of-stream send it downstream */
+ if ( in->size == 0 )
+ {
+ /* flush any frames left in the decoder */
+ while ( decodeFrame( pv, NULL, 0 ) )
+ {
+ }
+ hb_list_add( pv->list, in );
+ *buf_out = link_buf_list( pv );
+ hb_log( "%s done: %d frames %d drops", pv->context->codec->name,
+ pv->nframes, pv->ndrops );
+ return HB_WORK_DONE;
+ }
+
+ if( in->start >= 0 )
+ {
+ // use the first timestamp as our 'next expected' pts
+ if ( pv->pts_next <= 0 )
+ {
+ pv->pts_next = in->start;
+ }
+
+ if ( ! pv->ignore_pts )
+ {
+ pts = in->start;
+ if ( pv->pts > 0 )
+ {
+ hb_log( "overwriting pts %lld with %lld (diff %d)",
+ pv->pts, pts, pts - pv->pts );
+ }
+ if ( pv->pts_next - pts >= pv->duration )
+ {
+ // this frame starts more than a frame time before where
+ // the nominal frame rate says it should - drop it.
+ // log the first 10 drops so we'll know what's going on.
+ if ( pv->ndrops++ < 10 )
+ {
+ hb_log( "time reversal next %.0f pts %lld (diff %g)",
+ pv->pts_next, pts, pv->pts_next - pts );
+ }
+ hb_buffer_close( &in );
+ return HB_WORK_OK;
+ }
+ pv->pts = pts;
+ }
+ }
+
+ if ( in->new_chap )
+ {
+ pv->new_chap = in->new_chap;
+ pv->chap_time = pts >= 0? pts : pv->pts_next;
+ }
+ prepare_ffmpeg_buffer( in );
+ decodeFrame( pv, in->data, in->size );
+ hb_buffer_close( &in );
+ *buf_out = link_buf_list( pv );
+ return HB_WORK_OK;
+}
+
+static int decavcodecviInfo( hb_work_object_t *w, hb_work_info_t *info )
+{
+ if ( decavcodecvInfo( w, info ) )
+ {
+ // the frame rate in the codec seems to be bogus but it's ok in the stream.
+ AVStream *st = hb_ffmpeg_avstream( w->codec_param );
+ AVRational tb;
+ if ( st->r_frame_rate.den && st->r_frame_rate.num )
+ {
+ tb.num = st->r_frame_rate.den;
+ tb.den = st->r_frame_rate.num;
+ }
+ else
+ {
+ tb = st->time_base;
+ }
+
+ // ffmpeg gives the frame rate in frames per second while HB wants
+ // it in units of the 27MHz MPEG clock. */
+ info->rate = 27000000;
+ info->rate_base = (int64_t)tb.num * 27000000LL / tb.den;
+ return 1;
+ }
+ return 0;
+}
+
+static void decodeAudio( hb_work_private_t *pv, uint8_t *data, int size )
+{
+ AVCodecContext *context = pv->context;
+ int pos = 0;
+
+ while ( pos < size )
+ {
+ int16_t buffer[AVCODEC_MAX_AUDIO_FRAME_SIZE];
+ int out_size = sizeof(buffer);
+ int len = avcodec_decode_audio2( context, buffer, &out_size,
+ data + pos, size - pos );
+ if ( len <= 0 )
+ {
+ return;
+ }
+ pos += len;
+ if( out_size > 0 )
+ {
+ hb_buffer_t *buf = hb_buffer_init( 2 * out_size );
+
+ double pts = pv->pts_next;
+ buf->start = pts;
+ out_size >>= 1;
+ pts += out_size * pv->duration;
+ buf->stop = pts;
+ pv->pts_next = pts;
+
+ float *fl32 = (float *)buf->data;
+ int i;
+ for( i = 0; i < out_size; ++i )
+ {
+ fl32[i] = buffer[i];
+ }
+ hb_list_add( pv->list, buf );
+ }
+ }
+}
+
+static int decavcodecaiWork( hb_work_object_t *w, hb_buffer_t **buf_in,
+ hb_buffer_t **buf_out )
+{
+ hb_work_private_t *pv = w->private_data;
+ if ( ! pv->context )
+ {
+ init_ffmpeg_context( w );
+ pv->duration = 90000. /
+ (double)( pv->context->sample_rate * pv->context->channels );
+ }
+ hb_buffer_t *in = *buf_in;
+
+ if ( in->start >= 0 &&
+ ( pv->pts_next < 0 || ( in->start - pv->pts_next ) > 90*100 ) )
+ {
+ pv->pts_next = in->start;
+ }
+ prepare_ffmpeg_buffer( in );
+ decodeAudio( pv, in->data, in->size );
+ *buf_out = link_buf_list( pv );
return HB_WORK_OK;
}
+hb_work_object_t hb_decavcodecvi =
+{
+ WORK_DECAVCODECVI,
+ "Video decoder (ffmpeg streams)",
+ decavcodecviInit,
+ decavcodecviWork,
+ decavcodecClose,
+ decavcodecviInfo,
+ decavcodecvBSInfo
+};
+
+hb_work_object_t hb_decavcodecai =
+{
+ WORK_DECAVCODECAI,
+ "Audio decoder (ffmpeg streams)",
+ decavcodecviInit,
+ decavcodecaiWork,
+ decavcodecClose,
+ decavcodecInfo,
+ decavcodecBSInfo
+};
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