/* * consumer_avformat.c -- an encoder based on avformat * Copyright (C) 2003-2004 Ushodaya Enterprises Limited * Author: Charles Yates * * 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 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 * Lesser General Public License for more details. * * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ // Local header files #include "consumer_avformat.h" // mlt Header files #include // System header files #include #include #include #include #include #include #include // avformat header files #include #ifdef SWSCALE #include #endif // // This structure should be extended and made globally available in mlt // typedef struct { int16_t *buffer; int size; int used; double time; int frequency; int channels; } *sample_fifo, sample_fifo_s; sample_fifo sample_fifo_init( int frequency, int channels ) { sample_fifo this = calloc( 1, sizeof( sample_fifo_s ) ); this->frequency = frequency; this->channels = channels; return this; } // sample_fifo_clear and check are temporarily aborted (not working as intended) void sample_fifo_clear( sample_fifo this, double time ) { int words = ( float )( time - this->time ) * this->frequency * this->channels; if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) && this->used > words && words > 0 ) { memmove( this->buffer, &this->buffer[ words ], ( this->used - words ) * sizeof( int16_t ) ); this->used -= words; this->time = time; } else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )this->time * 100 ) ) { this->used = 0; this->time = time; } } void sample_fifo_check( sample_fifo this, double time ) { if ( this->used == 0 ) { if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) ) this->time = time; } } void sample_fifo_append( sample_fifo this, int16_t *samples, int count ) { if ( ( this->size - this->used ) < count ) { this->size += count * 5; this->buffer = realloc( this->buffer, this->size * sizeof( int16_t ) ); } memcpy( &this->buffer[ this->used ], samples, count * sizeof( int16_t ) ); this->used += count; } int sample_fifo_used( sample_fifo this ) { return this->used; } int sample_fifo_fetch( sample_fifo this, int16_t *samples, int count ) { if ( count > this->used ) count = this->used; memcpy( samples, this->buffer, count * sizeof( int16_t ) ); this->used -= count; memmove( this->buffer, &this->buffer[ count ], this->used * sizeof( int16_t ) ); this->time += ( double )count / this->channels / this->frequency; return count; } void sample_fifo_close( sample_fifo this ) { free( this->buffer ); free( this ); } // Forward references. static int consumer_start( mlt_consumer this ); static int consumer_stop( mlt_consumer this ); static int consumer_is_stopped( mlt_consumer this ); static void *consumer_thread( void *arg ); static void consumer_close( mlt_consumer this ); /** Initialise the dv consumer. */ mlt_consumer consumer_avformat_init( char *arg ) { // Allocate the consumer mlt_consumer this = mlt_consumer_new( ); // If memory allocated and initialises without error if ( this != NULL ) { // Get properties from the consumer mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); // Assign close callback this->close = consumer_close; // Interpret the argument if ( arg != NULL ) mlt_properties_set( properties, "target", arg ); // sample and frame queue mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL ); // Set avformat defaults (all lifted from ffmpeg.c) mlt_properties_set_int( properties, "audio_bit_rate", 128000 ); mlt_properties_set_int( properties, "video_bit_rate", 200 * 1000 ); mlt_properties_set_int( properties, "video_bit_rate_tolerance", 4000 * 1000 ); mlt_properties_set_int( properties, "gop_size", 12 ); mlt_properties_set_int( properties, "b_frames", 0 ); mlt_properties_set_int( properties, "mb_decision", FF_MB_DECISION_SIMPLE ); mlt_properties_set_double( properties, "qscale", 0 ); mlt_properties_set_int( properties, "me_method", ME_EPZS ); mlt_properties_set_int( properties, "mb_cmp", FF_CMP_SAD ); mlt_properties_set_int( properties, "ildct_cmp", FF_CMP_VSAD ); mlt_properties_set_int( properties, "sub_cmp", FF_CMP_SAD ); mlt_properties_set_int( properties, "cmp", FF_CMP_SAD ); mlt_properties_set_int( properties, "pre_cmp", FF_CMP_SAD ); mlt_properties_set_int( properties, "pre_me", 0 ); mlt_properties_set_double( properties, "lumi_mask", 0 ); mlt_properties_set_double( properties, "dark_mask", 0 ); mlt_properties_set_double( properties, "scplx_mask", 0 ); mlt_properties_set_double( properties, "tcplx_mask", 0 ); mlt_properties_set_double( properties, "p_mask", 0 ); mlt_properties_set_int( properties, "qns", 0 ); mlt_properties_set_int( properties, "video_qmin", 2 ); mlt_properties_set_int( properties, "video_qmax", 31 ); mlt_properties_set_int( properties, "video_lmin", 2*FF_QP2LAMBDA ); mlt_properties_set_int( properties, "video_lmax", 31*FF_QP2LAMBDA ); mlt_properties_set_int( properties, "video_mb_qmin", 2 ); mlt_properties_set_int( properties, "video_mb_qmax", 31 ); mlt_properties_set_int( properties, "video_qdiff", 3 ); mlt_properties_set_double( properties, "video_qblur", 0.5 ); mlt_properties_set_double( properties, "video_qcomp", 0.5 ); mlt_properties_set_int( properties, "video_rc_max_rate", 0 ); mlt_properties_set_int( properties, "video_rc_min_rate", 0 ); mlt_properties_set_int( properties, "video_rc_buffer_size", 0 ); mlt_properties_set_double( properties, "video_rc_buffer_aggressivity", 1.0 ); mlt_properties_set_double( properties, "video_rc_initial_cplx", 0 ); mlt_properties_set_double( properties, "video_i_qfactor", -0.8 ); mlt_properties_set_double( properties, "video_b_qfactor", 1.25 ); mlt_properties_set_double( properties, "video_i_qoffset", 0 ); mlt_properties_set_double( properties, "video_b_qoffset", 1.25 ); mlt_properties_set_int( properties, "video_intra_quant_bias", FF_DEFAULT_QUANT_BIAS ); mlt_properties_set_int( properties, "video_inter_quant_bias", FF_DEFAULT_QUANT_BIAS ); mlt_properties_set_int( properties, "dct_algo", 0 ); mlt_properties_set_int( properties, "idct_algo", 0 ); mlt_properties_set_int( properties, "me_threshold", 0 ); mlt_properties_set_int( properties, "mb_threshold", 0 ); mlt_properties_set_int( properties, "intra_dc_precision", 0 ); mlt_properties_set_int( properties, "strict", 0 ); mlt_properties_set_int( properties, "error_rate", 0 ); mlt_properties_set_int( properties, "noise_reduction", 0 ); mlt_properties_set_int( properties, "sc_threshold", 0 ); mlt_properties_set_int( properties, "me_range", 0 ); mlt_properties_set_int( properties, "coder", 0 ); mlt_properties_set_int( properties, "context", 0 ); mlt_properties_set_int( properties, "predictor", 0 ); mlt_properties_set_int( properties, "ildct", 0 ); mlt_properties_set_int( properties, "ilme", 0 ); // Ensure termination at end of the stream mlt_properties_set_int( properties, "terminate_on_pause", 1 ); // Set up start/stop/terminated callbacks this->start = consumer_start; this->stop = consumer_stop; this->is_stopped = consumer_is_stopped; } // Return this return this; } /** Start the consumer. */ static int consumer_start( mlt_consumer this ) { // Get the properties mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); // Check that we're not already running if ( !mlt_properties_get_int( properties, "running" ) ) { // Allocate a thread pthread_t *thread = calloc( 1, sizeof( pthread_t ) ); // Get the width and height int width = mlt_properties_get_int( properties, "width" ); int height = mlt_properties_get_int( properties, "height" ); // Obtain the size property char *size = mlt_properties_get( properties, "size" ); // Interpret it if ( size != NULL ) { int tw, th; if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 ) { width = tw; height = th; } else { fprintf( stderr, "consumer_avformat: Invalid size property %s - ignoring.\n", size ); } } // Now ensure we honour the multiple of two requested by libavformat mlt_properties_set_int( properties, "width", ( width / 2 ) * 2 ); mlt_properties_set_int( properties, "height", ( height / 2 ) * 2 ); // Assign the thread to properties mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL ); // Set the running state mlt_properties_set_int( properties, "running", 1 ); // Create the thread pthread_create( thread, NULL, consumer_thread, this ); } return 0; } /** Stop the consumer. */ static int consumer_stop( mlt_consumer this ) { // Get the properties mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); // Check that we're running if ( mlt_properties_get_int( properties, "running" ) ) { // Get the thread pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL ); // Stop the thread mlt_properties_set_int( properties, "running", 0 ); // Wait for termination pthread_join( *thread, NULL ); } return 0; } /** Determine if the consumer is stopped. */ static int consumer_is_stopped( mlt_consumer this ) { // Get the properties mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); return !mlt_properties_get_int( properties, "running" ); } /** Add an audio output stream */ static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int codec_id ) { // Get the properties mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); // Create a new stream AVStream *st = av_new_stream( oc, 1 ); // If created, then initialise from properties if ( st != NULL ) { AVCodecContext *c = st->codec; c->codec_id = codec_id; c->codec_type = CODEC_TYPE_AUDIO; // Put sample parameters c->bit_rate = mlt_properties_get_int( properties, "audio_bit_rate" ); c->sample_rate = mlt_properties_get_int( properties, "frequency" ); c->channels = mlt_properties_get_int( properties, "channels" ); if (oc->oformat->flags & AVFMT_GLOBALHEADER) c->flags |= CODEC_FLAG_GLOBAL_HEADER; // Allow the user to override the audio fourcc if ( mlt_properties_get( properties, "afourcc" ) ) { char *tail = NULL; char *arg = mlt_properties_get( properties, "afourcc" ); int tag = strtol( arg, &tail, 0); if( !tail || *tail ) tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 ); c->codec_tag = tag; } } else { fprintf( stderr, "Could not allocate a stream for audio\n" ); } return st; } static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size ) { // We will return the audio input size from here int audio_input_frame_size = 0; // Get the context AVCodecContext *c = st->codec; // Find the encoder AVCodec *codec = avcodec_find_encoder( c->codec_id ); // Continue if codec found and we can open it if ( codec != NULL && avcodec_open(c, codec) >= 0 ) { // ugly hack for PCM codecs (will be removed ASAP with new PCM // support to compute the input frame size in samples if ( c->frame_size <= 1 ) { audio_input_frame_size = audio_outbuf_size / c->channels; switch(st->codec->codec_id) { case CODEC_ID_PCM_S16LE: case CODEC_ID_PCM_S16BE: case CODEC_ID_PCM_U16LE: case CODEC_ID_PCM_U16BE: audio_input_frame_size >>= 1; break; default: break; } } else { audio_input_frame_size = c->frame_size; } // Some formats want stream headers to be seperate (hmm) if( !strcmp( oc->oformat->name, "mp4" ) || !strcmp( oc->oformat->name, "mov" ) || !strcmp( oc->oformat->name, "3gp" ) ) c->flags |= CODEC_FLAG_GLOBAL_HEADER; } else { fprintf( stderr, "Unable to encode audio - disabling audio output.\n" ); } return audio_input_frame_size; } static void close_audio( AVFormatContext *oc, AVStream *st ) { avcodec_close( st->codec ); } /** Add a video output stream */ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int codec_id ) { // Get the properties mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); // Create a new stream AVStream *st = av_new_stream( oc, 0 ); if ( st != NULL ) { char *pix_fmt = mlt_properties_get( properties, "pix_fmt" ); double ar = mlt_properties_get_double( properties, "display_ratio" ); AVCodecContext *c = st->codec; c->codec_id = codec_id; c->codec_type = CODEC_TYPE_VIDEO; // put sample parameters c->bit_rate = mlt_properties_get_int( properties, "video_bit_rate" ); c->bit_rate_tolerance = mlt_properties_get_int( properties, "video_bit_rate_tolerance" ); c->width = mlt_properties_get_int( properties, "width" ); c->height = mlt_properties_get_int( properties, "height" ); c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" ); c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" ); c->gop_size = mlt_properties_get_int( properties, "gop_size" ); c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P; if ( mlt_properties_get_int( properties, "b_frames" ) ) { c->max_b_frames = mlt_properties_get_int( properties, "b_frames" ); c->b_frame_strategy = 0; c->b_quant_factor = 2.0; } c->mb_decision = mlt_properties_get_int( properties, "mb_decision" ); c->sample_aspect_ratio = av_d2q( ar * c->height / c->width , 255); c->mb_cmp = mlt_properties_get_int( properties, "mb_cmp" ); c->ildct_cmp = mlt_properties_get_int( properties, "ildct_cmp" ); c->me_sub_cmp = mlt_properties_get_int( properties, "sub_cmp" ); c->me_cmp = mlt_properties_get_int( properties, "cmp" ); c->me_pre_cmp = mlt_properties_get_int( properties, "pre_cmp" ); c->pre_me = mlt_properties_get_int( properties, "pre_me" ); c->lumi_masking = mlt_properties_get_double( properties, "lumi_mask" ); c->dark_masking = mlt_properties_get_double( properties, "dark_mask" ); c->spatial_cplx_masking = mlt_properties_get_double( properties, "scplx_mask" ); c->temporal_cplx_masking = mlt_properties_get_double( properties, "tcplx_mask" ); c->p_masking = mlt_properties_get_double( properties, "p_mask" ); c->quantizer_noise_shaping= mlt_properties_get_int( properties, "qns" ); c->qmin = mlt_properties_get_int( properties, "video_qmin" ); c->qmax = mlt_properties_get_int( properties, "video_qmax" ); c->lmin = mlt_properties_get_int( properties, "video_lmin" ); c->lmax = mlt_properties_get_int( properties, "video_lmax" ); c->mb_qmin = mlt_properties_get_int( properties, "video_mb_qmin" ); c->mb_qmax = mlt_properties_get_int( properties, "video_mb_qmax" ); c->max_qdiff = mlt_properties_get_int( properties, "video_qdiff" ); c->qblur = mlt_properties_get_double( properties, "video_qblur" ); c->qcompress = mlt_properties_get_double( properties, "video_qcomp" ); if ( mlt_properties_get_double( properties, "qscale" ) > 0 ) { c->flags |= CODEC_FLAG_QSCALE; st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" ); } // Allow the user to override the video fourcc if ( mlt_properties_get( properties, "vfourcc" ) ) { char *tail = NULL; const char *arg = mlt_properties_get( properties, "vfourcc" ); int tag = strtol( arg, &tail, 0); if( !tail || *tail ) tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 ); c->codec_tag = tag; } // Some formats want stream headers to be seperate if ( oc->oformat->flags & AVFMT_GLOBALHEADER ) c->flags |= CODEC_FLAG_GLOBAL_HEADER; c->rc_max_rate = mlt_properties_get_int( properties, "video_rc_max_rate" ); c->rc_min_rate = mlt_properties_get_int( properties, "video_rc_min_rate" ); c->rc_buffer_size = mlt_properties_get_int( properties, "video_rc_buffer_size" ); c->rc_initial_buffer_occupancy = c->rc_buffer_size*3/4; c->rc_buffer_aggressivity= mlt_properties_get_double( properties, "video_rc_buffer_aggressivity" ); c->rc_initial_cplx= mlt_properties_get_double( properties, "video_rc_initial_cplx" ); c->i_quant_factor = mlt_properties_get_double( properties, "video_i_qfactor" ); c->b_quant_factor = mlt_properties_get_double( properties, "video_b_qfactor" ); c->i_quant_offset = mlt_properties_get_double( properties, "video_i_qoffset" ); c->b_quant_offset = mlt_properties_get_double( properties, "video_b_qoffset" ); c->intra_quant_bias = mlt_properties_get_int( properties, "video_intra_quant_bias" ); c->inter_quant_bias = mlt_properties_get_int( properties, "video_inter_quant_bias" ); c->dct_algo = mlt_properties_get_int( properties, "dct_algo" ); c->idct_algo = mlt_properties_get_int( properties, "idct_algo" ); c->me_threshold= mlt_properties_get_int( properties, "me_threshold" ); c->mb_threshold= mlt_properties_get_int( properties, "mb_threshold" ); c->intra_dc_precision= mlt_properties_get_int( properties, "intra_dc_precision" ); c->strict_std_compliance = mlt_properties_get_int( properties, "strict" ); c->error_rate = mlt_properties_get_int( properties, "error_rate" ); c->noise_reduction= mlt_properties_get_int( properties, "noise_reduction" ); c->scenechange_threshold= mlt_properties_get_int( properties, "sc_threshold" ); c->me_range = mlt_properties_get_int( properties, "me_range" ); c->coder_type= mlt_properties_get_int( properties, "coder" ); c->context_model= mlt_properties_get_int( properties, "context" ); c->prediction_method= mlt_properties_get_int( properties, "predictor" ); c->me_method = mlt_properties_get_int( properties, "me_method" ); if ( mlt_properties_get_int( properties, "progressive" ) == 0 && mlt_properties_get_int( properties, "deinterlace" ) == 0 ) { if ( mlt_properties_get_int( properties, "ildct" ) ) c->flags |= CODEC_FLAG_INTERLACED_DCT; if ( mlt_properties_get_int( properties, "ilme" ) ) c->flags |= CODEC_FLAG_INTERLACED_ME; } } else { fprintf( stderr, "Could not allocate a stream for video\n" ); } return st; } static AVFrame *alloc_picture( int pix_fmt, int width, int height ) { // Allocate a frame AVFrame *picture = avcodec_alloc_frame(); // Determine size of the int size = avpicture_get_size(pix_fmt, width, height); // Allocate the picture buf uint8_t *picture_buf = av_malloc(size); // If we have both, then fill the image if ( picture != NULL && picture_buf != NULL ) { // Fill the frame with the allocated buffer avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height); } else { // Something failed - clean up what we can av_free( picture ); av_free( picture_buf ); picture = NULL; } return picture; } static int open_video(AVFormatContext *oc, AVStream *st) { // Get the codec AVCodecContext *video_enc = st->codec; // find the video encoder AVCodec *codec = avcodec_find_encoder( video_enc->codec_id ); if( codec && codec->pix_fmts ) { const enum PixelFormat *p = codec->pix_fmts; for( ; *p!=-1; p++ ) { if( *p == video_enc->pix_fmt ) break; } if( *p == -1 ) video_enc->pix_fmt = codec->pix_fmts[ 0 ]; } // Open the codec safely return codec != NULL && avcodec_open( video_enc, codec ) >= 0; } void close_video(AVFormatContext *oc, AVStream *st) { avcodec_close(st->codec); } static inline long time_difference( struct timeval *time1 ) { struct timeval time2; gettimeofday( &time2, NULL ); return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec; } /** The main thread - the argument is simply the consumer. */ static void *consumer_thread( void *arg ) { // Map the argument to the object mlt_consumer this = arg; // Get the properties mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); // Get the terminate on pause property int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" ); int terminated = 0; // Determine if feed is slow (for realtime stuff) int real_time_output = mlt_properties_get_int( properties, "real_time" ); // Time structures struct timeval ante; // Get the frame rate int fps = mlt_properties_get_double( properties, "fps" ); // Get width and height int width = mlt_properties_get_int( properties, "width" ); int height = mlt_properties_get_int( properties, "height" ); int img_width = width; int img_height = height; // Get default audio properties mlt_audio_format aud_fmt = mlt_audio_pcm; int channels = mlt_properties_get_int( properties, "channels" ); int frequency = mlt_properties_get_int( properties, "frequency" ); int16_t *pcm = NULL; int samples = 0; // AVFormat audio buffer and frame size int audio_outbuf_size = 10000; uint8_t *audio_outbuf = av_malloc( audio_outbuf_size ); int audio_input_frame_size = 0; // AVFormat video buffer and frame count int frame_count = 0; int video_outbuf_size = ( 1024 * 1024 ); uint8_t *video_outbuf = av_malloc( video_outbuf_size ); // Used for the frame properties mlt_frame frame = NULL; mlt_properties frame_properties = NULL; // Get the queues mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL ); sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL ); // Need two av pictures for converting AVFrame *output = NULL; AVFrame *input = alloc_picture( PIX_FMT_YUV422, width, height ); // For receiving images from an mlt_frame uint8_t *image; mlt_image_format img_fmt = mlt_image_yuv422; // For receiving audio samples back from the fifo int16_t *buffer = av_malloc( 48000 * 2 ); int count = 0; // Allocate the context AVFormatContext *oc = av_alloc_format_context( ); // Streams AVStream *audio_st = NULL; AVStream *video_st = NULL; // Time stamps double audio_pts = 0; double video_pts = 0; // Loop variable int i; // Frames despatched long int frames = 0; long int total_time = 0; // Determine the format AVOutputFormat *fmt = NULL; char *filename = mlt_properties_get( properties, "target" ); char *format = mlt_properties_get( properties, "format" ); char *vcodec = mlt_properties_get( properties, "vcodec" ); char *acodec = mlt_properties_get( properties, "acodec" ); // Used to store and override codec ids int audio_codec_id; int video_codec_id; // Check for user selected format first if ( format != NULL ) fmt = guess_format( format, NULL, NULL ); // Otherwise check on the filename if ( fmt == NULL && filename != NULL ) fmt = guess_format( NULL, filename, NULL ); // Otherwise default to mpeg if ( fmt == NULL ) fmt = guess_format( "mpeg", NULL, NULL ); // We need a filename - default to stdout? if ( filename == NULL || !strcmp( filename, "" ) ) filename = "pipe:"; // Get the codec ids selected audio_codec_id = fmt->audio_codec; video_codec_id = fmt->video_codec; // Check for audio codec overides if ( acodec != NULL ) { AVCodec *p = first_avcodec; while( p != NULL ) { if ( !strcmp( p->name, acodec ) && p->type == CODEC_TYPE_AUDIO ) break; p = p->next; } if ( p != NULL ) audio_codec_id = p->id; else fprintf( stderr, "consumer_avcodec: audio codec %s unrecognised - ignoring\n", acodec ); } // Check for video codec overides if ( vcodec != NULL ) { AVCodec *p = first_avcodec; while( p != NULL ) { if ( !strcmp( p->name, vcodec ) && p->type == CODEC_TYPE_VIDEO ) break; p = p->next; } if ( p != NULL ) video_codec_id = p->id; else fprintf( stderr, "consumer_avcodec: video codec %s unrecognised - ignoring\n", vcodec ); } // Update the output context // Write metadata char *tmp = NULL; int metavalue; tmp = mlt_properties_get( properties, "meta.attr.title.markup"); if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp ); tmp = mlt_properties_get( properties, "meta.attr.comment.markup"); if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp ); tmp = mlt_properties_get( properties, "meta.attr.author.markup"); if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp ); tmp = mlt_properties_get( properties, "meta.attr.copyright.markup"); if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp ); tmp = mlt_properties_get( properties, "meta.attr.album.markup"); if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp ); metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup"); if (metavalue != 0) oc->year = metavalue; metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup"); if (metavalue != 0) oc->track = metavalue; oc->oformat = fmt; snprintf( oc->filename, sizeof(oc->filename), "%s", filename ); // Add audio and video streams if ( fmt->video_codec != CODEC_ID_NONE ) video_st = add_video_stream( this, oc, video_codec_id ); if ( fmt->audio_codec != CODEC_ID_NONE ) audio_st = add_audio_stream( this, oc, audio_codec_id ); // Set the parameters (even though we have none...) if ( av_set_parameters(oc, NULL) >= 0 ) { if ( video_st && !open_video( oc, video_st ) ) video_st = NULL; if ( audio_st ) audio_input_frame_size = open_audio( oc, audio_st, audio_outbuf_size ); // Open the output file, if needed if ( !( fmt->flags & AVFMT_NOFILE ) ) { if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) { fprintf(stderr, "Could not open '%s'\n", filename); mlt_properties_set_int( properties, "running", 0 ); } } // Write the stream header, if any if ( mlt_properties_get_int( properties, "running" ) ) av_write_header( oc ); } else { fprintf(stderr, "Invalid output format parameters\n"); mlt_properties_set_int( properties, "running", 0 ); } // Allocate picture if ( video_st ) output = alloc_picture( video_st->codec->pix_fmt, width, height ); // Last check - need at least one stream if ( audio_st == NULL && video_st == NULL ) mlt_properties_set_int( properties, "running", 0 ); // Get the starting time (can ignore the times above) gettimeofday( &ante, NULL ); // Loop while running while( mlt_properties_get_int( properties, "running" ) && !terminated ) { // Get the frame frame = mlt_consumer_rt_frame( this ); // Check that we have a frame to work with if ( frame != NULL ) { // Increment frames despatched frames ++; // Default audio args frame_properties = MLT_FRAME_PROPERTIES( frame ); // Check for the terminated condition terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0; // Get audio and append to the fifo if ( !terminated && audio_st ) { samples = mlt_sample_calculator( fps, frequency, count ++ ); mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples ); // Create the fifo if we don't have one if ( fifo == NULL ) { fifo = sample_fifo_init( frequency, channels ); mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL ); } if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 ) memset( pcm, 0, samples * channels * 2 ); // Append the samples sample_fifo_append( fifo, pcm, samples * channels ); total_time += ( samples * 1000000 ) / frequency; } // Encode the image if ( !terminated && video_st ) mlt_deque_push_back( queue, frame ); else mlt_frame_close( frame ); } // While we have stuff to process, process... while ( 1 ) { if (audio_st) audio_pts = (double)audio_st->pts.val * audio_st->time_base.num / audio_st->time_base.den; else audio_pts = 0.0; if (video_st) video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den; else video_pts = 0.0; // Write interleaved audio and video frames if ( !video_st || ( video_st && audio_st && audio_pts < video_pts ) ) { if ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) { AVCodecContext *c; AVPacket pkt; av_init_packet( &pkt ); c = audio_st->codec; sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size ); pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer ); // Write the compressed frame in the media file if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE ) pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base ); pkt.flags |= PKT_FLAG_KEY; pkt.stream_index= audio_st->index; pkt.data= audio_outbuf; if ( pkt.size ) if ( av_interleaved_write_frame( oc, &pkt ) != 0) fprintf(stderr, "Error while writing audio frame\n"); audio_pts += c->frame_size; } else { break; } } else if ( video_st ) { if ( mlt_deque_count( queue ) ) { int out_size, ret; AVCodecContext *c; frame = mlt_deque_pop_front( queue ); frame_properties = MLT_FRAME_PROPERTIES( frame ); c = video_st->codec; if ( mlt_properties_get_int( frame_properties, "rendered" ) ) { int i = 0; int j = 0; uint8_t *p; uint8_t *q; mlt_events_fire( properties, "consumer-frame-show", frame, NULL ); mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 ); q = image; // Convert the mlt frame to an AVPicture for ( i = 0; i < height; i ++ ) { p = input->data[ 0 ] + i * input->linesize[ 0 ]; j = width; while( j -- ) { *p ++ = *q ++; *p ++ = *q ++; } } // Do the colour space conversion #ifdef SWSCALE struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUV422, width, height, video_st->codec->pix_fmt, SWS_FAST_BILINEAR, NULL, NULL, NULL); sws_scale( context, input->data, input->linesize, 0, height, output->data, output->linesize); sws_freeContext( context ); #else img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUV422, width, height ); #endif // Apply the alpha if applicable if ( video_st->codec->pix_fmt == PIX_FMT_RGBA32 ) { uint8_t *alpha = mlt_frame_get_alpha_mask( frame ); register int n; for ( i = 0; i < height; i ++ ) { n = ( width + 7 ) / 8; p = output->data[ 0 ] + i * output->linesize[ 0 ]; #ifndef __DARWIN__ p += 3; #endif switch( width % 8 ) { case 0: do { *p = *alpha++; p += 4; case 7: *p = *alpha++; p += 4; case 6: *p = *alpha++; p += 4; case 5: *p = *alpha++; p += 4; case 4: *p = *alpha++; p += 4; case 3: *p = *alpha++; p += 4; case 2: *p = *alpha++; p += 4; case 1: *p = *alpha++; p += 4; } while( --n ); } } } } if (oc->oformat->flags & AVFMT_RAWPICTURE) { // raw video case. The API will change slightly in the near future for that AVPacket pkt; av_init_packet(&pkt); pkt.flags |= PKT_FLAG_KEY; pkt.stream_index= video_st->index; pkt.data= (uint8_t *)output; pkt.size= sizeof(AVPicture); ret = av_write_frame(oc, &pkt); video_pts += c->frame_size; } else { // Set the quality output->quality = video_st->quality; // Set frame interlace hints output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" ); output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" ); // Encode the image out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output ); // If zero size, it means the image was buffered if (out_size > 0) { AVPacket pkt; av_init_packet( &pkt ); if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE ) pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base ); if( c->coded_frame && c->coded_frame->key_frame ) pkt.flags |= PKT_FLAG_KEY; pkt.stream_index= video_st->index; pkt.data= video_outbuf; pkt.size= out_size; // write the compressed frame in the media file ret = av_interleaved_write_frame(oc, &pkt); video_pts += c->frame_size; } else { fprintf( stderr, "Error with video encode\n" ); } } frame_count++; mlt_frame_close( frame ); } else { break; } } } if ( real_time_output && frames % 12 == 0 ) { long passed = time_difference( &ante ); if ( fifo != NULL ) { long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000; passed -= pending; } if ( passed < total_time ) { long total = ( total_time - passed ); struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 }; nanosleep( &t, NULL ); } } } #ifdef FLUSH if ( ! real_time_output ) { // Flush audio fifo if ( audio_st && audio_st->codec->frame_size > 1 ) for (;;) { AVCodecContext *c = audio_st->codec; AVPacket pkt; av_init_packet( &pkt ); pkt.size = 0; if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/ ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) ) { sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size ); pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer ); } if ( pkt.size <= 0 ) pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL ); if ( pkt.size <= 0 ) break; // Write the compressed frame in the media file if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE ) pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base ); pkt.flags |= PKT_FLAG_KEY; pkt.stream_index = audio_st->index; pkt.data = audio_outbuf; if ( av_interleaved_write_frame( oc, &pkt ) != 0 ) { fprintf(stderr, "Error while writing flushed audio frame\n"); break; } } // Flush video if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;) { AVCodecContext *c = video_st->codec; AVPacket pkt; av_init_packet( &pkt ); // Encode the image pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL ); if ( pkt.size <= 0 ) break; if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE ) pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base ); if( c->coded_frame && c->coded_frame->key_frame ) pkt.flags |= PKT_FLAG_KEY; pkt.stream_index = video_st->index; pkt.data = video_outbuf; // write the compressed frame in the media file if ( av_interleaved_write_frame( oc, &pkt ) != 0 ) { fprintf(stderr, "Error while writing flushed video frame\n"); break; } } } #endif // close each codec if (video_st) close_video(oc, video_st); if (audio_st) close_audio(oc, audio_st); // Write the trailer, if any av_write_trailer(oc); // Free the streams for(i = 0; i < oc->nb_streams; i++) av_freep(&oc->streams[i]); // Close the output file if (!(fmt->flags & AVFMT_NOFILE)) #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(0<<8)+0) url_fclose(oc->pb); #else url_fclose(&oc->pb); #endif // Clean up input and output frames if ( output ) av_free( output->data[0] ); av_free( output ); av_free( input->data[0] ); av_free( input ); av_free( video_outbuf ); av_free( buffer ); // Free the stream av_free(oc); // Just in case we terminated on pause mlt_properties_set_int( properties, "running", 0 ); mlt_consumer_stopped( this ); return NULL; } /** Close the consumer. */ static void consumer_close( mlt_consumer this ) { // Stop the consumer mlt_consumer_stop( this ); // Close the parent mlt_consumer_close( this ); // Free the memory free( this ); }