* producer_avformat.c -- avformat producer
* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
* Author: Charles Yates <charles.yates@pandora.be>
+ * Much code borrowed from ffmpeg.c: Copyright (c) 2000-2003 Fabrice Bellard
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This library 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,
+ * This library 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 General Public License for more details.
+ * 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 General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-// Local header files
-#include "producer_avformat.h"
-
// MLT Header files
+#include <framework/mlt_producer.h>
#include <framework/mlt_frame.h>
+#include <framework/mlt_profile.h>
+#include <framework/mlt_log.h>
// ffmpeg Header files
#include <avformat.h>
+#include <opt.h>
+#ifdef SWSCALE
+# include <swscale.h>
+#endif
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
+# include "audioconvert.h"
+#endif
// System header files
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
-#include <math.h>
+
+#if LIBAVUTIL_VERSION_INT < (50<<16)
+#define PIX_FMT_RGB32 PIX_FMT_RGBA32
+#define PIX_FMT_YUYV422 PIX_FMT_YUV422
+#endif
void avformat_lock( );
void avformat_unlock( );
// Forward references.
-static int producer_open( mlt_producer this, char *file );
+static int producer_open( mlt_producer this, mlt_profile profile, char *file );
static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int index );
/** Constructor for libavformat.
*/
-mlt_producer producer_avformat_init( char *file )
+mlt_producer producer_avformat_init( mlt_profile profile, char *file )
{
+ int error = 0;
+
+ // Report information about available demuxers and codecs as YAML Tiny
+ if ( file && strstr( file, "f-list" ) )
+ {
+ fprintf( stderr, "---\nformats:\n" );
+ AVInputFormat *format = NULL;
+ while ( ( format = av_iformat_next( format ) ) )
+ fprintf( stderr, " - %s\n", format->name );
+ fprintf( stderr, "...\n" );
+ error = 1;
+ }
+ if ( file && strstr( file, "acodec-list" ) )
+ {
+ fprintf( stderr, "---\naudio_codecs:\n" );
+ AVCodec *codec = NULL;
+ while ( ( codec = av_codec_next( codec ) ) )
+ if ( codec->decode && codec->type == CODEC_TYPE_AUDIO )
+ fprintf( stderr, " - %s\n", codec->name );
+ fprintf( stderr, "...\n" );
+ error = 1;
+ }
+ if ( file && strstr( file, "vcodec-list" ) )
+ {
+ fprintf( stderr, "---\nvideo_codecs:\n" );
+ AVCodec *codec = NULL;
+ while ( ( codec = av_codec_next( codec ) ) )
+ if ( codec->decode && codec->type == CODEC_TYPE_VIDEO )
+ fprintf( stderr, " - %s\n", codec->name );
+ fprintf( stderr, "...\n" );
+ error = 1;
+ }
+ if ( error )
+ return NULL;
+
mlt_producer this = NULL;
// Check that we have a non-NULL argument
this->get_frame = producer_get_frame;
// Open the file
- if ( producer_open( this, file ) != 0 )
+ if ( producer_open( this, profile, file ) != 0 )
{
// Clean up
mlt_producer_close( this );
this = NULL;
}
+ else
+ {
+ // Close the file to release resources for large playlists - reopen later as needed
+ mlt_properties_set_data( properties, "dummy_context", NULL, 0, NULL, NULL );
+ mlt_properties_set_data( properties, "audio_context", NULL, 0, NULL, NULL );
+ mlt_properties_set_data( properties, "video_context", NULL, 0, NULL, NULL );
+
+ // Default the user-selectable indices from the auto-detected indices
+ mlt_properties_set_int( properties, "audio_index", mlt_properties_get_int( properties, "_audio_index" ) );
+ mlt_properties_set_int( properties, "video_index", mlt_properties_get_int( properties, "_video_index" ) );
+ }
}
}
/** Find the default streams.
*/
-static void find_default_streams( AVFormatContext *context, int *audio_index, int *video_index )
+static mlt_properties find_default_streams( mlt_properties meta_media, AVFormatContext *context, int *audio_index, int *video_index )
{
int i;
+ char key[200];
+
+ mlt_properties_set_int( meta_media, "meta.media.nb_streams", context->nb_streams );
// Allow for multiple audio and video streams in the file and select first of each (if available)
- for( i = 0; i < context->nb_streams; i++ )
+ for( i = 0; i < context->nb_streams; i++ )
{
// Get the codec context
- AVCodecContext *codec_context = context->streams[ i ]->codec;
+ AVStream *stream = context->streams[ i ];
+ if ( ! stream ) continue;
+ AVCodecContext *codec_context = stream->codec;
+ if ( ! codec_context ) continue;
+ AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
+ if ( ! codec ) continue;
+
+ snprintf( key, sizeof(key), "meta.media.%d.stream.type", i );
// Determine the type and obtain the first index of each type
- switch( codec_context->codec_type )
+ switch( codec_context->codec_type )
{
case CODEC_TYPE_VIDEO:
if ( *video_index < 0 )
*video_index = i;
+ mlt_properties_set( meta_media, key, "video" );
+ snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
+ mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->r_frame_rate ) );
+#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
+ snprintf( key, sizeof(key), "meta.media.%d.stream.sample_aspect_ratio", i );
+ mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->sample_aspect_ratio ) );
+#endif
+ snprintf( key, sizeof(key), "meta.media.%d.codec.pix_fmt", i );
+ mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
+ snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
+ mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
break;
case CODEC_TYPE_AUDIO:
if ( *audio_index < 0 )
*audio_index = i;
- break;
+ mlt_properties_set( meta_media, key, "audio" );
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
+ snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
+ mlt_properties_set( meta_media, key, avcodec_get_sample_fmt_name( codec_context->sample_fmt ) );
+#endif
+ snprintf( key, sizeof(key), "meta.media.%d.codec.sample_rate", i );
+ mlt_properties_set_int( meta_media, key, codec_context->sample_rate );
+ snprintf( key, sizeof(key), "meta.media.%d.codec.channels", i );
+ mlt_properties_set_int( meta_media, key, codec_context->channels );
+ break;
default:
- break;
+ break;
}
+// snprintf( key, sizeof(key), "meta.media.%d.stream.time_base", i );
+// mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->time_base ) );
+ snprintf( key, sizeof(key), "meta.media.%d.codec.name", i );
+ mlt_properties_set( meta_media, key, codec->name );
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(55<<8)+0))
+ snprintf( key, sizeof(key), "meta.media.%d.codec.long_name", i );
+ mlt_properties_set( meta_media, key, codec->long_name );
+#endif
+ snprintf( key, sizeof(key), "meta.media.%d.codec.bit_rate", i );
+ mlt_properties_set_int( meta_media, key, codec_context->bit_rate );
+// snprintf( key, sizeof(key), "meta.media.%d.codec.time_base", i );
+// mlt_properties_set_double( meta_media, key, av_q2d( codec_context->time_base ) );
+ snprintf( key, sizeof(key), "meta.media.%d.codec.profile", i );
+ mlt_properties_set_int( meta_media, key, codec_context->profile );
+ snprintf( key, sizeof(key), "meta.media.%d.codec.level", i );
+ mlt_properties_set_int( meta_media, key, codec_context->level );
}
+
+ return meta_media;
}
/** Producer file destructor.
}
}
+static inline int dv_is_pal( AVPacket *pkt )
+{
+ return pkt->data[3] & 0x80;
+}
+
+static int dv_is_wide( AVPacket *pkt )
+{
+ int i = 80 /* block size */ *3 /* VAUX starts at block 3 */ +3 /* skip block header */;
+
+ for ( ; i < pkt->size; i += 5 /* packet size */ )
+ {
+ if ( pkt->data[ i ] == 0x61 )
+ {
+ uint8_t x = pkt->data[ i + 2 ] & 0x7;
+ return ( x == 2 ) || ( x == 7 );
+ }
+ }
+ return 0;
+}
+
+static double get_aspect_ratio( AVStream *stream, AVCodecContext *codec_context, AVPacket *pkt )
+{
+ double aspect_ratio = 1.0;
+
+ if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
+ {
+ if ( pkt )
+ {
+ if ( dv_is_pal( pkt ) )
+ {
+ aspect_ratio = dv_is_wide( pkt )
+ ? 64.0/45.0 // 16:9 PAL
+ : 16.0/15.0; // 4:3 PAL
+ }
+ else
+ {
+ aspect_ratio = dv_is_wide( pkt )
+ ? 32.0/27.0 // 16:9 NTSC
+ : 8.0/9.0; // 4:3 NTSC
+ }
+ }
+ else
+ {
+ AVRational ar =
+#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
+ stream->sample_aspect_ratio;
+#else
+ codec_context->sample_aspect_ratio;
+#endif
+ // Override FFmpeg's notion of DV aspect ratios, which are
+ // based upon a width of 704. Since we do not have a normaliser
+ // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
+ // we just coerce the values to facilitate a passive behaviour through
+ // the rescale normaliser when using equivalent producers and consumers.
+ // = display_aspect / (width * height)
+ if ( ar.num == 10 && ar.den == 11 )
+ aspect_ratio = 8.0/9.0; // 4:3 NTSC
+ else if ( ar.num == 59 && ar.den == 54 )
+ aspect_ratio = 16.0/15.0; // 4:3 PAL
+ else if ( ar.num == 40 && ar.den == 33 )
+ aspect_ratio = 32.0/27.0; // 16:9 NTSC
+ else if ( ar.num == 118 && ar.den == 81 )
+ aspect_ratio = 64.0/45.0; // 16:9 PAL
+ }
+ }
+ else
+ {
+ AVRational codec_sar = codec_context->sample_aspect_ratio;
+ AVRational stream_sar =
+#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
+ stream->sample_aspect_ratio;
+#else
+ { 0, 1 };
+#endif
+ if ( codec_sar.num > 0 )
+ aspect_ratio = av_q2d( codec_sar );
+ else if ( stream_sar.num > 0 )
+ aspect_ratio = av_q2d( stream_sar );
+ }
+ return aspect_ratio;
+}
+
/** Open the file.
*/
-static int producer_open( mlt_producer this, char *file )
+static int producer_open( mlt_producer this, mlt_profile profile, char *file )
{
// Return an error code (0 == no error)
int error = 0;
mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
// We will treat everything with the producer fps
- double fps = mlt_properties_get_double( properties, "fps" );
+ double fps = mlt_profile_fps( profile );
// Lock the mutex now
avformat_lock( );
-
+
// If "MRL", then create AVInputFormat
AVInputFormat *format = NULL;
AVFormatParameters *params = NULL;
// AV option (0 = both, 1 = video, 2 = audio)
int av = 0;
-
- // Setting lowest log level
- av_log_set_level( -1 );
// Only if there is not a protocol specification that avformat can handle
if ( mrl && !url_exist( file ) )
{
// 'file' becomes format abbreviation
mrl[0] = 0;
-
+
// Lookup the format
format = av_find_input_format( file );
-
+
// Eat the format designator
file = ++mrl;
-
+
if ( format )
{
// Allocate params
params = calloc( sizeof( AVFormatParameters ), 1 );
-
+
// These are required by video4linux (defaults)
params->width = 640;
params->height = 480;
params->time_base= (AVRational){1,25};
- params->device = file;
+ // params->device = file;
params->channels = 2;
params->sample_rate = 48000;
}
-
+
+ // XXX: this does not work anymore since avdevice
+ // TODO: make producer_avddevice?
// Parse out params
mrl = strchr( file, '?' );
while ( mrl )
}
// Now attempt to open the file
- error = av_open_input_file( &context, file, format, 0, params );
- error = error < 0;
-
+ error = av_open_input_file( &context, file, format, 0, params ) < 0;
+
// Cleanup AVFormatParameters
free( standard );
free( params );
int av_bypass = 0;
// Now set properties where we can (use default unknowns if required)
- if ( context->duration != AV_NOPTS_VALUE )
+ if ( context->duration != AV_NOPTS_VALUE )
{
// This isn't going to be accurate for all formats
- mlt_position frames = ( mlt_position )( ( ( double )context->duration / ( double )AV_TIME_BASE ) * fps );
- mlt_properties_set_position( properties, "out", frames - 2 );
- mlt_properties_set_position( properties, "length", frames - 1 );
+ mlt_position frames = ( mlt_position )( ( ( double )context->duration / ( double )AV_TIME_BASE ) * fps + 0.5 );
+ mlt_properties_set_position( properties, "out", frames - 1 );
+ mlt_properties_set_position( properties, "length", frames );
}
// Find default audio and video streams
- find_default_streams( context, &audio_index, &video_index );
+ find_default_streams( properties, context, &audio_index, &video_index );
+
+ if ( context->start_time != AV_NOPTS_VALUE )
+ mlt_properties_set_double( properties, "_start_time", context->start_time );
- if ( context->start_time != AV_NOPTS_VALUE )
- mlt_properties_set_double( properties, "_start_time", context->start_time );
-
// Check if we're seekable (something funny about mpeg here :-/)
- if ( strcmp( file, "pipe:" ) && strncmp( file, "http://", 6 ) )
+ if ( strcmp( file, "pipe:" ) && strncmp( file, "http://", 6 ) && strncmp( file, "udp:", 4 ) && strncmp( file, "tcp:", 4 ) && strncmp( file, "rtsp:", 5 ) && strncmp( file, "rtp:", 4 ) )
+ {
mlt_properties_set_int( properties, "seekable", av_seek_frame( context, -1, mlt_properties_get_double( properties, "_start_time" ), AVSEEK_FLAG_BACKWARD ) >= 0 );
+ mlt_properties_set_data( properties, "dummy_context", context, 0, producer_file_close, NULL );
+ av_open_input_file( &context, file, NULL, 0, NULL );
+ av_find_stream_info( context );
+ }
else
av_bypass = 1;
// Store selected audio and video indexes on properties
- mlt_properties_set_int( properties, "audio_index", audio_index );
- mlt_properties_set_int( properties, "video_index", video_index );
+ mlt_properties_set_int( properties, "_audio_index", audio_index );
+ mlt_properties_set_int( properties, "_video_index", video_index );
+ mlt_properties_set_int( properties, "_last_position", -1 );
// Fetch the width, height and aspect ratio
if ( video_index != -1 )
AVCodecContext *codec_context = context->streams[ video_index ]->codec;
mlt_properties_set_int( properties, "width", codec_context->width );
mlt_properties_set_int( properties, "height", codec_context->height );
- mlt_properties_set_double( properties, "aspect_ratio", av_q2d( codec_context->sample_aspect_ratio ) );
+
+ if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
+ {
+ // Fetch the first frame of DV so we can read it directly
+ AVPacket pkt;
+ int ret = 0;
+ while ( ret >= 0 )
+ {
+ ret = av_read_frame( context, &pkt );
+ if ( ret >= 0 && pkt.stream_index == video_index && pkt.size > 0 )
+ {
+ mlt_properties_set_double( properties, "aspect_ratio",
+ get_aspect_ratio( context->streams[ video_index ], codec_context, &pkt ) );
+ break;
+ }
+ }
+ }
+ else
+ {
+ mlt_properties_set_double( properties, "aspect_ratio",
+ get_aspect_ratio( context->streams[ video_index ], codec_context, NULL ) );
+ }
}
-
+
+ // Read Metadata
+ if (context->title != NULL)
+ mlt_properties_set(properties, "meta.attr.title.markup", context->title );
+ if (context->author != NULL)
+ mlt_properties_set(properties, "meta.attr.author.markup", context->author );
+ if (context->copyright != NULL)
+ mlt_properties_set(properties, "meta.attr.copyright.markup", context->copyright );
+ if (context->comment != NULL)
+ mlt_properties_set(properties, "meta.attr.comment.markup", context->comment );
+ if (context->album != NULL)
+ mlt_properties_set(properties, "meta.attr.album.markup", context->album );
+ if (context->year != 0)
+ mlt_properties_set_int(properties, "meta.attr.year.markup", context->year );
+ if (context->track != 0)
+ mlt_properties_set_int(properties, "meta.attr.track.markup", context->track );
+
// We're going to cheat here - for a/v files, we will have two contexts (reasoning will be clear later)
- if ( av == 0 && !av_bypass && audio_index != -1 && video_index != -1 )
+ if ( av == 0 && audio_index != -1 && video_index != -1 )
{
// We'll use the open one as our video_context
mlt_properties_set_data( properties, "video_context", context, 0, producer_file_close, NULL );
static double producer_time_of_frame( mlt_producer this, mlt_position position )
{
- // Get the properties
- mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
-
- // Obtain the fps
- double fps = mlt_properties_get_double( properties, "fps" );
-
- // Do the calc
- return ( double )position / fps;
+ return ( double )position / mlt_producer_get_fps( this );
}
-static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt, mlt_image_format format, int width, int height )
+static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt, mlt_image_format *format, int width, int height )
{
- if ( format == mlt_image_yuv420p )
+#ifdef SWSCALE
+ if ( pix_fmt == PIX_FMT_RGB32 )
+ {
+ *format = mlt_image_rgb24a;
+ struct SwsContext *context = sws_getContext( width, height, pix_fmt,
+ width, height, PIX_FMT_RGBA, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+ AVPicture output;
+ avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
+ sws_scale( context, frame->data, frame->linesize, 0, height,
+ output.data, output.linesize);
+ sws_freeContext( context );
+ }
+ else if ( *format == mlt_image_yuv420p )
+ {
+ struct SwsContext *context = sws_getContext( width, height, pix_fmt,
+ width, height, PIX_FMT_YUV420P, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+ AVPicture output;
+ output.data[0] = buffer;
+ output.data[1] = buffer + width * height;
+ output.data[2] = buffer + ( 3 * width * height ) / 2;
+ output.linesize[0] = width;
+ output.linesize[1] = width >> 1;
+ output.linesize[2] = width >> 1;
+ sws_scale( context, frame->data, frame->linesize, 0, height,
+ output.data, output.linesize);
+ sws_freeContext( context );
+ }
+ else if ( *format == mlt_image_rgb24 )
+ {
+ struct SwsContext *context = sws_getContext( width, height, pix_fmt,
+ width, height, PIX_FMT_RGB24, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+ AVPicture output;
+ avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
+ sws_scale( context, frame->data, frame->linesize, 0, height,
+ output.data, output.linesize);
+ sws_freeContext( context );
+ }
+ else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
+ {
+ struct SwsContext *context = sws_getContext( width, height, pix_fmt,
+ width, height, PIX_FMT_RGBA, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+ AVPicture output;
+ avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
+ sws_scale( context, frame->data, frame->linesize, 0, height,
+ output.data, output.linesize);
+ sws_freeContext( context );
+ }
+ else
+ {
+ struct SwsContext *context = sws_getContext( width, height, pix_fmt,
+ width, height, PIX_FMT_YUYV422, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+ AVPicture output;
+ avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
+ sws_scale( context, frame->data, frame->linesize, 0, height,
+ output.data, output.linesize);
+ sws_freeContext( context );
+ }
+#else
+ if ( *format == mlt_image_yuv420p )
{
AVPicture pict;
pict.data[0] = buffer;
pict.linesize[2] = width >> 1;
img_convert( &pict, PIX_FMT_YUV420P, (AVPicture *)frame, pix_fmt, width, height );
}
- else if ( format == mlt_image_rgb24 )
+ else if ( *format == mlt_image_rgb24 )
{
AVPicture output;
avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
img_convert( &output, PIX_FMT_RGB24, (AVPicture *)frame, pix_fmt, width, height );
}
+ else if ( format == mlt_image_rgb24a || format == mlt_image_opengl )
+ {
+ AVPicture output;
+ avpicture_fill( &output, buffer, PIX_FMT_RGB32, width, height );
+ img_convert( &output, PIX_FMT_RGB32, (AVPicture *)frame, pix_fmt, width, height );
+ }
else
{
AVPicture output;
- avpicture_fill( &output, buffer, PIX_FMT_YUV422, width, height );
- img_convert( &output, PIX_FMT_YUV422, (AVPicture *)frame, pix_fmt, width, height );
+ avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
+ img_convert( &output, PIX_FMT_YUYV422, (AVPicture *)frame, pix_fmt, width, height );
+ }
+#endif
+}
+
+/** Allocate the image buffer and set it on the frame.
+*/
+
+static int allocate_buffer( mlt_properties frame_properties, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
+{
+ int size = 0;
+
+ if ( codec_context->width == 0 || codec_context->height == 0 )
+ return size;
+
+ *width = codec_context->width;
+ *height = codec_context->height;
+ mlt_properties_set_int( frame_properties, "width", *width );
+ mlt_properties_set_int( frame_properties, "height", *height );
+
+ if ( codec_context->pix_fmt == PIX_FMT_RGB32 )
+ size = *width * ( *height + 1 ) * 4;
+ else switch ( *format )
+ {
+ case mlt_image_yuv420p:
+ size = *width * 3 * ( *height + 1 ) / 2;
+ break;
+ case mlt_image_rgb24:
+ size = *width * ( *height + 1 ) * 3;
+ break;
+ case mlt_image_rgb24a:
+ case mlt_image_opengl:
+ size = *width * ( *height + 1 ) * 4;
+ break;
+ default:
+ *format = mlt_image_yuv422;
+ size = *width * ( *height + 1 ) * 2;
+ break;
}
+
+ // Construct the output image
+ *buffer = mlt_pool_alloc( size );
+ if ( *buffer )
+ mlt_properties_set_data( frame_properties, "image", *buffer, size, (mlt_destructor)mlt_pool_release, NULL );
+ else
+ size = 0;
+
+ return size;
}
/** Get an image from a frame.
// Obtain the frame number of this frame
mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
- // Get the producer
+ // Get the producer
mlt_producer this = mlt_properties_get_data( frame_properties, "avformat_producer", NULL );
// Get the producer properties
// Obtain the expected frame numer
mlt_position expected = mlt_properties_get_position( properties, "_video_expected" );
- // Calculate the real time code
- double real_timecode = producer_time_of_frame( this, position );
-
// Get the video stream
AVStream *stream = context->streams[ index ];
// Special case ffwd handling
int ignore = 0;
- // Current time calcs
- double current_time = mlt_properties_get_double( properties, "_current_time" );
-
// We may want to use the source fps if available
double source_fps = mlt_properties_get_double( properties, "source_fps" );
+ double fps = mlt_producer_get_fps( this );
+
+ // This is the physical frame position in the source
+ int req_position = ( int )( position / fps * source_fps + 0.5 );
// Get the seekable status
int seekable = mlt_properties_get_int( properties, "seekable" );
- // Generate the size in bytes
- int size = 0;
-
// Hopefully provide better support for streams...
int av_bypass = mlt_properties_get_int( properties, "av_bypass" );
- // Set the result arguments that we know here (only *buffer is now required)
- *width = codec_context->width;
- *height = codec_context->height;
+ // Determines if we have to decode all frames in a sequence
+ int must_decode = 1;
- switch ( *format )
- {
- case mlt_image_yuv420p:
- size = *width * 3 * ( *height + 1 ) / 2;
- break;
- case mlt_image_rgb24:
- size = *width * ( *height + 1 ) * 3;
- break;
- default:
- *format = mlt_image_yuv422;
- size = *width * ( *height + 1 ) * 2;
- break;
- }
+ // Temporary hack to improve intra frame only
+ must_decode = strcmp( codec_context->codec->name, "dnxhd" ) &&
+ strcmp( codec_context->codec->name, "dvvideo" ) &&
+ strcmp( codec_context->codec->name, "huffyuv" ) &&
+ strcmp( codec_context->codec->name, "mjpeg" ) &&
+ strcmp( codec_context->codec->name, "rawvideo" );
- // Set this on the frame properties
- mlt_properties_set_int( frame_properties, "width", *width );
- mlt_properties_set_int( frame_properties, "height", *height );
-
- // Construct the output image
- *buffer = mlt_pool_alloc( size );
+ int last_position = mlt_properties_get_int( properties, "_last_position" );
// Seek if necessary
- if ( position != expected )
+ if ( position != expected || last_position == -1 )
{
- if ( position + 1 == expected )
+ if ( av_frame != NULL && position + 1 == expected )
{
// We're paused - use last image
paused = 1;
else if ( !seekable && position > expected && ( position - expected ) < 250 )
{
// Fast forward - seeking is inefficient for small distances - just ignore following frames
- ignore = position - expected;
+ ignore = ( int )( ( position - expected ) / fps * source_fps );
}
- else if ( seekable && ( position < expected || position - expected >= 12 ) )
+ else if ( seekable && ( position < expected || position - expected >= 12 || last_position == -1 ) )
{
- // Set to the real timecode
- av_seek_frame( context, -1, mlt_properties_get_double( properties, "_start_time" ) + real_timecode * 1000000.0, AVSEEK_FLAG_BACKWARD );
-
- // Remove the cached info relating to the previous position
- mlt_properties_set_double( properties, "_current_time", real_timecode );
+ // Calculate the timestamp for the requested frame
+ int64_t timestamp = ( int64_t )( ( double )req_position / source_fps * AV_TIME_BASE + 0.5 );
+ if ( ( uint64_t )context->start_time != AV_NOPTS_VALUE )
+ timestamp += context->start_time;
+ if ( must_decode )
+ timestamp -= AV_TIME_BASE;
+ if ( timestamp < 0 )
+ timestamp = 0;
+
+ // Set to the timestamp
+ mlt_log_debug( MLT_PRODUCER_SERVICE( this ), "seeking timestamp %lld position %d expected %d last_pos %d\n",
+ timestamp, position, expected, last_position );
+ av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD );
+ // Remove the cached info relating to the previous position
+ mlt_properties_set_int( properties, "_current_position", -1 );
+ mlt_properties_set_int( properties, "_last_position", -1 );
mlt_properties_set_data( properties, "av_frame", NULL, 0, NULL, NULL );
av_frame = NULL;
}
}
-
- // Duplicate the last image if necessary
- if ( av_frame != NULL && ( paused || mlt_properties_get_double( properties, "_current_time" ) >= real_timecode ) &&
- av_bypass == 0 )
+
+ // Duplicate the last image if necessary (see comment on rawvideo below)
+ int current_position = mlt_properties_get_int( properties, "_current_position" );
+ int got_picture = mlt_properties_get_int( properties, "_got_picture" );
+ if ( av_frame != NULL && got_picture && ( paused || current_position >= req_position ) && av_bypass == 0 )
{
// Duplicate it
- convert_image( av_frame, *buffer, codec_context->pix_fmt, *format, *width, *height );
-
- // Set this on the frame properties
- mlt_properties_set_data( frame_properties, "image", *buffer, size, ( mlt_destructor )mlt_pool_release, NULL );
+ if ( allocate_buffer( frame_properties, codec_context, buffer, format, width, height ) )
+ convert_image( av_frame, *buffer, codec_context->pix_fmt, format, *width, *height );
+ else
+ mlt_frame_get_image( frame, buffer, format, width, height, writable );
}
else
{
int ret = 0;
- int got_picture = 0;
- int must_decode = 1;
-
- // Temporary hack to improve intra frame only
- if ( !strcmp( codec_context->codec->name, "mjpeg" ) )
- must_decode = 0;
+ int int_position = 0;
+ got_picture = 0;
- memset( &pkt, 0, sizeof( pkt ) );
+ av_init_packet( &pkt );
// Construct an AVFrame for YUV422 conversion
if ( av_frame == NULL )
- {
- av_frame = calloc( 1, sizeof( AVFrame ) );
- mlt_properties_set_data( properties, "av_frame", av_frame, 0, free, NULL );
- }
+ av_frame = avcodec_alloc_frame( );
while( ret >= 0 && !got_picture )
{
if ( ret >= 0 && pkt.stream_index == index && pkt.size > 0 )
{
// Determine time code of the packet
- if ( pkt.dts != AV_NOPTS_VALUE )
- current_time = av_q2d( stream->time_base ) * pkt.dts;
+ if (pkt.dts != AV_NOPTS_VALUE)
+ {
+ int_position = ( int )( av_q2d( stream->time_base ) * pkt.dts * source_fps + 0.5 );
+ if ( context->start_time != AV_NOPTS_VALUE )
+ int_position -= ( int )( context->start_time * source_fps / AV_TIME_BASE + 0.5 );
+ last_position = mlt_properties_get_int( properties, "_last_position" );
+ if ( int_position == last_position )
+ int_position = last_position + 1;
+ }
else
- current_time = real_timecode;
+ {
+ int_position = req_position;
+ }
+ // Make a dumb assumption on streams that contain wild timestamps
+ if ( (unsigned) req_position - (unsigned) int_position > 999 )
+ int_position = req_position;
+ mlt_properties_set_int( properties, "_last_position", int_position );
// Decode the image
- if ( must_decode || current_time >= real_timecode )
+ if ( must_decode || int_position >= req_position )
ret = avcodec_decode_video( codec_context, av_frame, &got_picture, pkt.data, pkt.size );
if ( got_picture )
{
// Handle ignore
- if ( ( int )( current_time * 100 ) < ( int )( real_timecode * 100 ) - 7 )
+ if ( int_position < req_position )
{
ignore = 0;
got_picture = 0;
}
- else if ( current_time >= real_timecode )
+ else if ( int_position >= req_position )
{
ignore = 0;
}
got_picture = 0;
}
}
+ mlt_log_debug( MLT_PRODUCER_SERVICE(this), "pkt.dts %llu req_pos %d cur_pos %d pkt_pos %d got_pic %d key %d\n",
+ pkt.dts, req_position, current_position, int_position, got_picture, pkt.flags & PKT_FLAG_KEY );
+ av_free_packet( &pkt );
}
-
- // We're finished with this packet regardless
- av_free_packet( &pkt );
- }
-
- // Now handle the picture if we have one
- if ( got_picture )
- {
- mlt_properties_set_int( frame_properties, "progressive", !av_frame->interlaced_frame );
- mlt_properties_set_int( frame_properties, "top_field_first", av_frame->top_field_first );
-
- convert_image( av_frame, *buffer, codec_context->pix_fmt, *format, *width, *height );
-
- mlt_properties_set_data( frame_properties, "image", *buffer, size, (mlt_destructor)mlt_pool_release, NULL );
-
- if ( current_time == 0 && source_fps != 0 )
+ else if ( ret >= 0 )
{
- double fps = mlt_properties_get_double( properties, "fps" );
- current_time = ceil( source_fps * ( double )position / fps ) * ( 1 / source_fps );
- mlt_properties_set_double( properties, "_current_time", current_time );
+ av_free_packet( &pkt );
}
- else
+
+ // Now handle the picture if we have one
+ if ( got_picture )
{
- mlt_properties_set_double( properties, "_current_time", current_time );
+ if ( allocate_buffer( frame_properties, codec_context, buffer, format, width, height ) )
+ {
+ convert_image( av_frame, *buffer, codec_context->pix_fmt, format, *width, *height );
+ if ( !mlt_properties_get( properties, "force_progressive" ) )
+ mlt_properties_set_int( frame_properties, "progressive", !av_frame->interlaced_frame );
+ mlt_properties_set_int( properties, "top_field_first", av_frame->top_field_first );
+ mlt_properties_set_int( properties, "_current_position", int_position );
+ mlt_properties_set_int( properties, "_got_picture", 1 );
+ mlt_properties_set_data( properties, "av_frame", av_frame, 0, av_free, NULL );
+ }
+ else
+ {
+ got_picture = 0;
+ }
}
}
+ if ( !got_picture )
+ mlt_frame_get_image( frame, buffer, format, width, height, writable );
}
-
+
+ // Very untidy - for rawvideo, the packet contains the frame, hence the free packet
+ // above will break the pause behaviour - so we wipe the frame now
+ if ( !strcmp( codec_context->codec->name, "rawvideo" ) )
+ mlt_properties_set_data( properties, "av_frame", NULL, 0, NULL, NULL );
+
// Set the field order property for this frame
- mlt_properties_set_int( frame_properties, "top_field_first",
- mlt_properties_get_int( properties, "top_field_first" ) );
+ mlt_properties_set_int( frame_properties, "top_field_first", mlt_properties_get_int( properties, "top_field_first" ) );
// Regardless of speed, we expect to get the next frame (cos we ain't too bright)
mlt_properties_set_position( properties, "_video_expected", position + 1 );
return 0;
}
+/** Process properties as AVOptions and apply to AV context obj
+*/
+
+static void apply_properties( void *obj, mlt_properties properties, int flags )
+{
+ int i;
+ int count = mlt_properties_count( properties );
+ for ( i = 0; i < count; i++ )
+ {
+ const char *opt_name = mlt_properties_get_name( properties, i );
+ const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
+ if ( opt != NULL )
+#if LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
+ av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
+#elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
+ av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
+#else
+ av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
+#endif
+ }
+}
+
/** Set up video handling.
*/
// Get the video_index
int index = mlt_properties_get_int( properties, "video_index" );
+ // Reopen the file if necessary
+ if ( !context && index > -1 )
+ {
+ mlt_events_block( properties, this );
+ producer_open( this, mlt_service_profile( MLT_PRODUCER_SERVICE(this) ),
+ mlt_properties_get( properties, "resource" ) );
+ context = mlt_properties_get_data( properties, "video_context", NULL );
+ mlt_properties_set_data( properties, "dummy_context", NULL, 0, NULL, NULL );
+ mlt_events_unblock( properties, this );
+
+ // Process properties as AVOptions
+ apply_properties( context, properties, AV_OPT_FLAG_DECODING_PARAM );
+ }
+
+ // Exception handling for video_index
+ if ( context && index >= (int) context->nb_streams )
+ {
+ // Get the last video stream
+ for ( index = context->nb_streams - 1; index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO; --index );
+ mlt_properties_set_int( properties, "video_index", index );
+ }
+ if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
+ {
+ // Invalidate the video stream
+ index = -1;
+ mlt_properties_set_int( properties, "video_index", index );
+ }
+
// Get the frame properties
mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
- if ( context != NULL && index != -1 )
+ if ( context && index > -1 )
{
// Get the video stream
AVStream *stream = context->streams[ index ];
// Get the codec
AVCodec *codec = mlt_properties_get_data( properties, "video_codec", NULL );
+ // Update the video properties if the index changed
+ if ( index != mlt_properties_get_int( properties, "_video_index" ) )
+ {
+ // Reset the video properties if the index changed
+ mlt_properties_set_int( properties, "_video_index", index );
+ mlt_properties_set_data( properties, "video_codec", NULL, 0, NULL, NULL );
+ mlt_properties_set_int( properties, "width", codec_context->width );
+ mlt_properties_set_int( properties, "height", codec_context->height );
+ // TODO: get the first usable AVPacket and reset the stream position
+ mlt_properties_set_double( properties, "aspect_ratio",
+ get_aspect_ratio( context->streams[ index ], codec_context, NULL ) );
+ codec = NULL;
+ }
+
// Initialise the codec if necessary
if ( codec == NULL )
{
+ // Initialise multi-threading
+ int thread_count = mlt_properties_get_int( properties, "threads" );
+ if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
+ thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
+ if ( thread_count > 1 )
+ {
+ avcodec_thread_init( codec_context, thread_count );
+ codec_context->thread_count = thread_count;
+ }
+
// Find the codec
codec = avcodec_find_decoder( codec_context->codec_id );
// If we don't have a codec and we can't initialise it, we can't do much more...
+ avformat_lock( );
if ( codec != NULL && avcodec_open( codec_context, codec ) >= 0 )
{
// Now store the codec with its destructor
{
// Remember that we can't use this later
mlt_properties_set_int( properties, "video_index", -1 );
+ index = -1;
}
+ avformat_unlock( );
+
+ // Process properties as AVOptions
+ apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
}
// No codec, no show...
- if ( codec != NULL )
+ if ( codec && index > -1 )
{
double source_fps = 0;
- int norm_aspect_ratio = mlt_properties_get_int( properties, "norm_aspect_ratio" );
double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
- double aspect_ratio;
-
- // XXX: We won't know the real aspect ratio until an image is decoded
- // but we do need it now (to satisfy filter_resize) - take a guess based
- // on pal/ntsc
- if ( force_aspect_ratio > 0.0 )
- {
- aspect_ratio = force_aspect_ratio;
- }
- else if ( !norm_aspect_ratio && codec_context->sample_aspect_ratio.num > 0 )
- {
- aspect_ratio = av_q2d( codec_context->sample_aspect_ratio );
- }
- else
- {
- int is_pal = mlt_properties_get_double( properties, "fps" ) == 25.0;
- aspect_ratio = is_pal ? 59.0/54.0 : 10.0/11.0;
- }
+ double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
+ force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
// Determine the fps
source_fps = ( double )codec_context->time_base.den / ( codec_context->time_base.num == 0 ? 1 : codec_context->time_base.num );
// We'll use fps if it's available
- if ( source_fps > 0 && source_fps < 30 )
+ if ( source_fps > 0 )
mlt_properties_set_double( properties, "source_fps", source_fps );
+ else
+ mlt_properties_set_double( properties, "source_fps", mlt_producer_get_fps( this ) );
mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
-
+
// Set the width and height
mlt_properties_set_int( frame_properties, "width", codec_context->width );
mlt_properties_set_int( frame_properties, "height", codec_context->height );
+ mlt_properties_set_int( frame_properties, "real_width", codec_context->width );
+ mlt_properties_set_int( frame_properties, "real_height", codec_context->height );
mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
+ if ( mlt_properties_get( properties, "force_progressive" ) )
+ mlt_properties_set_int( frame_properties, "progressive", mlt_properties_get_int( properties, "force_progressive" ) );
mlt_frame_push_get_image( frame, producer_get_image );
mlt_properties_set_data( frame_properties, "avformat_producer", this, 0, NULL, NULL );
// Obtain the frame number of this frame
mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
- // Get the producer
+ // Get the producer
mlt_producer this = mlt_properties_get_data( frame_properties, "avformat_producer", NULL );
// Get the producer properties
// Obtain the resample context if it exists (not always needed)
ReSampleContext *resample = mlt_properties_get_data( properties, "audio_resample", NULL );
- // Obtain the audio buffer
+ // Obtain the audio buffers
int16_t *audio_buffer = mlt_properties_get_data( properties, "audio_buffer", NULL );
+ int16_t *decode_buffer = mlt_properties_get_data( properties, "decode_buffer", NULL );
// Get amount of audio used
int audio_used = mlt_properties_get_int( properties, "_audio_used" );
// Number of frames to ignore (for ffwd)
int ignore = 0;
- // Flag for paused (silence)
+ // Flag for paused (silence)
int paused = 0;
// Check for resample and create if necessary
if ( resample == NULL && codec_context->channels <= 2 )
{
// Create the resampler
+#if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(15<<8)+0))
+ resample = av_audio_resample_init( *channels, codec_context->channels, *frequency, codec_context->sample_rate,
+ SAMPLE_FMT_S16, codec_context->sample_fmt, 16, 10, 0, 0.8 );
+#else
resample = audio_resample_init( *channels, codec_context->channels, *frequency, codec_context->sample_rate );
+#endif
// And store it on properties
mlt_properties_set_data( properties, "audio_resample", resample, 0, ( mlt_destructor )audio_resample_close, NULL );
}
else if ( resample == NULL )
{
- *channels = codec_context->channels;
+ // TODO: uncomment and remove following line when full multi-channel support is ready
+ // *channels = codec_context->channels;
+ codec_context->request_channels = *channels;
+
*frequency = codec_context->sample_rate;
}
mlt_properties_set_data( properties, "audio_buffer", audio_buffer, 0, ( mlt_destructor )mlt_pool_release, NULL );
}
+ // Check for decoder buffer and create if necessary
+ if ( decode_buffer == NULL )
+ {
+ // Allocate the audio buffer
+ decode_buffer = av_malloc( AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof( int16_t ) );
+
+ // And store it on properties for reuse
+ mlt_properties_set_data( properties, "decode_buffer", decode_buffer, 0, ( mlt_destructor )av_free, NULL );
+ }
+
// Seek if necessary
if ( position != expected )
{
}
else if ( position < expected || position - expected >= 12 )
{
+ int64_t timestamp = ( int64_t )( real_timecode * AV_TIME_BASE + 0.5 );
+ if ( context->start_time != AV_NOPTS_VALUE )
+ timestamp += context->start_time;
+ if ( timestamp < 0 )
+ timestamp = 0;
+
// Set to the real timecode
- if ( av_seek_frame( context, -1, mlt_properties_get_double( properties, "_start_time" ) + real_timecode * 1000000.0, AVSEEK_FLAG_BACKWARD ) != 0 )
+ if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
paused = 1;
// Clear the usage in the audio buffer
{
int ret = 0;
int got_audio = 0;
- int16_t *temp = mlt_pool_alloc( sizeof( int16_t ) * AVCODEC_MAX_AUDIO_FRAME_SIZE );
- memset( &pkt, 0, sizeof( pkt ) );
+ av_init_packet( &pkt );
while( ret >= 0 && !got_audio )
{
// Read a packet
ret = av_read_frame( context, &pkt );
- int len = pkt.size;
- uint8_t *ptr = pkt.data;
- int data_size;
+ int len = pkt.size;
+ uint8_t *ptr = pkt.data;
// We only deal with audio from the selected audio_index
while ( ptr != NULL && ret >= 0 && pkt.stream_index == index && len > 0 )
{
- // Decode the audio
- ret = avcodec_decode_audio( codec_context, temp, &data_size, ptr, len );
+ int data_size = sizeof( int16_t ) * AVCODEC_MAX_AUDIO_FRAME_SIZE;
+ // Decode the audio
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
+ ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
+#else
+ ret = avcodec_decode_audio( codec_context, decode_buffer, &data_size, ptr, len );
+#endif
if ( ret < 0 )
{
ret = 0;
len -= ret;
ptr += ret;
- if ( data_size > 0 )
+ if ( data_size > 0 && ( audio_used * *channels + data_size < AVCODEC_MAX_AUDIO_FRAME_SIZE ) )
{
- if ( resample != NULL )
+ if ( resample )
{
- audio_used += audio_resample( resample, &audio_buffer[ audio_used * *channels ], temp, data_size / ( codec_context->channels * sizeof( int16_t ) ) );
+ int16_t *source = decode_buffer;
+ int16_t *dest = &audio_buffer[ audio_used * *channels ];
+ int convert_samples = data_size / av_get_bits_per_sample_format( codec_context->sample_fmt ) * 8 / codec_context->channels;
+
+ audio_used += audio_resample( resample, dest, source, convert_samples );
}
else
{
- memcpy( &audio_buffer[ audio_used * *channels ], temp, data_size );
- audio_used += data_size / ( codec_context->channels * sizeof( int16_t ) );
+ memcpy( &audio_buffer[ audio_used * *channels ], decode_buffer, data_size );
+ audio_used += data_size / *channels / av_get_bits_per_sample_format( codec_context->sample_fmt ) * 8;
}
// Handle ignore
}
// If we're behind, ignore this packet
- float current_pts = av_q2d( stream->time_base ) * pkt.pts;
- if ( seekable && ( !ignore && current_pts <= ( real_timecode - 0.02 ) ) )
- ignore = 1;
+ if ( pkt.pts >= 0 )
+ {
+ double current_pts = av_q2d( stream->time_base ) * pkt.pts;
+ double source_fps = mlt_properties_get_double( properties, "source_fps" );
+ int req_position = ( int )( real_timecode * source_fps + 0.5 );
+ int int_position = ( int )( current_pts * source_fps + 0.5 );
+
+ if ( context->start_time != AV_NOPTS_VALUE )
+ int_position -= ( int )( context->start_time * source_fps / AV_TIME_BASE + 0.5 );
+ if ( seekable && !ignore && int_position < req_position )
+ ignore = 1;
+ }
}
// We're finished with this packet regardless
{
memset( *buffer, 0, *samples * *channels * sizeof( int16_t ) );
}
-
+
// Store the number of audio samples still available
mlt_properties_set_int( properties, "_audio_used", audio_used );
-
- // Release the temporary audio
- mlt_pool_release( temp );
}
else
{
// Get the audio_index
int index = mlt_properties_get_int( properties, "audio_index" );
+ // Reopen the file if necessary
+ if ( !context && index > -1 )
+ {
+ mlt_events_block( properties, this );
+ producer_open( this, mlt_service_profile( MLT_PRODUCER_SERVICE(this) ),
+ mlt_properties_get( properties, "resource" ) );
+ context = mlt_properties_get_data( properties, "audio_context", NULL );
+ mlt_properties_set_data( properties, "dummy_context", NULL, 0, NULL, NULL );
+ mlt_events_unblock( properties, this );
+ }
+
+ // Exception handling for audio_index
+ if ( context && index >= (int) context->nb_streams )
+ {
+ for ( index = context->nb_streams - 1; index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO; --index );
+ mlt_properties_set_int( properties, "audio_index", index );
+ }
+ if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
+ {
+ index = -1;
+ mlt_properties_set_int( properties, "audio_index", index );
+ }
+
+ // Update the audio properties if the index changed
+ if ( index > -1 && index != mlt_properties_get_int( properties, "_audio_index" ) )
+ {
+ mlt_properties_set_int( properties, "_audio_index", index );
+ mlt_properties_set_data( properties, "audio_codec", NULL, 0, NULL, NULL );
+ }
+
// Deal with audio context
- if ( context != NULL && index != -1 )
+ if ( context != NULL && index > -1 )
{
// Get the frame properties
mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
codec = avcodec_find_decoder( codec_context->codec_id );
// If we don't have a codec and we can't initialise it, we can't do much more...
+ avformat_lock( );
if ( codec != NULL && avcodec_open( codec_context, codec ) >= 0 )
{
// Now store the codec with its destructor
{
// Remember that we can't use this later
mlt_properties_set_int( properties, "audio_index", -1 );
+ index = -1;
}
+ avformat_unlock( );
+
+ // Process properties as AVOptions
+ apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
}
// No codec, no show...
- if ( codec != NULL )
+ if ( codec && index > -1 )
{
mlt_frame_push_audio( frame, producer_get_audio );
mlt_properties_set_data( frame_properties, "avformat_producer", this, 0, NULL, NULL );
+ mlt_properties_set_int( frame_properties, "frequency", codec_context->sample_rate );
+ mlt_properties_set_int( frame_properties, "channels", codec_context->channels );
}
}
}
static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int index )
{
// Create an empty frame
- *frame = mlt_frame_init( );
+ *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( this ) );
// Update timecode on the frame we're creating
mlt_frame_set_position( *frame, mlt_producer_position( this ) );
projects / mlt / blobdiff