/**
* @brief VLC module construct callback
* @return
*/
static int y4m_open(vlc_object_t* obj)
{
filter_t* intf = (filter_t*)obj;
// todo: defer this check until we know if its needed or not
if( !intf->b_allow_fmt_out_change )
{
msg_Err(intf, "picture format change isn't allowed");
return VLC_EGENERIC;
}
filter_sys_t* sys = malloc(sizeof(*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
intf->p_sys = sys;
memset(sys, 0, sizeof(*sys));
sys->cmd = var_InheritString(intf, "y4m-cmd");
if (sys->cmd == NULL)
{
msg_Err(intf, "argument parse failed");
free(sys);
return VLC_EGENERIC;
}
sys->echo = var_InheritBool(intf, "y4m-echo");
sys->stdin = -1;
sys->stdout = -1;
sys->bufferRatio = 1;
msg_Info(intf, "open");
sys->inputFifo = picture_fifo_New();
sys->outputFifo = picture_fifo_New();
vlc_cond_init(&sys->inputCond);
vlc_cond_init(&sys->outputCond);
vlc_mutex_init(&sys->inputMutex);
vlc_mutex_init(&sys->outputMutex);
intf->pf_video_filter = y4m_filter;
intf->pf_flush = y4m_flush;
// todo: the conversion needed isn't known until
// a frame is read back from the filter, for now
// filters in/out format needs to be the same
//intf->fmt_out.video.i_frame_rate *= 2;
//intf->fmt_out.i_codec = VLC_CODEC_I420;
//intf->fmt_out.video.i_chroma = VLC_CODEC_I420;
return VLC_SUCCESS;
}
/**
* Create an image_handler_t instance
*
*/
image_handler_t *image_HandlerCreate( vlc_object_t *p_this )
{
image_handler_t *p_image = calloc( 1, sizeof(image_handler_t) );
if( !p_image )
return NULL;
p_image->p_parent = p_this;
p_image->pf_read = ImageRead;
p_image->pf_read_url = ImageReadUrl;
p_image->pf_write = ImageWrite;
p_image->pf_write_url = ImageWriteUrl;
p_image->pf_convert = ImageConvert;
p_image->outfifo = picture_fifo_New();
return p_image;
}
int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
/* Open decoder
* Initialization of decoder structures
*/
id->p_decoder->fmt_out = id->p_decoder->fmt_in;
id->p_decoder->fmt_out.i_extra = 0;
id->p_decoder->fmt_out.p_extra = 0;
id->p_decoder->pf_decode_video = NULL;
id->p_decoder->pf_get_cc = NULL;
id->p_decoder->pf_get_cc = 0;
id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
id->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
id->p_decoder->pf_picture_link = video_link_picture_decoder;
id->p_decoder->pf_picture_unlink = video_unlink_picture_decoder;
id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
if( !id->p_decoder->p_owner )
return VLC_EGENERIC;
id->p_decoder->p_owner->p_sys = p_sys;
/* id->p_decoder->p_cfg = p_sys->p_video_cfg; */
id->p_decoder->p_module =
module_need( id->p_decoder, "decoder", "$codec", false );
if( !id->p_decoder->p_module )
{
msg_Err( p_stream, "cannot find video decoder" );
free( id->p_decoder->p_owner );
return VLC_EGENERIC;
}
/*
* Open encoder.
* Because some info about the decoded input will only be available
* once the first frame is decoded, we actually only test the availability
* of the encoder here.
*/
/* Initialization of encoder format structures */
es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
id->p_decoder->fmt_out.i_codec );
id->p_encoder->fmt_in.video.i_chroma = id->p_decoder->fmt_out.i_codec;
/* The dimensions will be set properly later on.
* Just put sensible values so we can test an encoder is available. */
id->p_encoder->fmt_in.video.i_width =
id->p_encoder->fmt_out.video.i_width
? id->p_encoder->fmt_out.video.i_width
: id->p_decoder->fmt_in.video.i_width
? id->p_decoder->fmt_in.video.i_width : 16;
id->p_encoder->fmt_in.video.i_height =
id->p_encoder->fmt_out.video.i_height
? id->p_encoder->fmt_out.video.i_height
: id->p_decoder->fmt_in.video.i_height
? id->p_decoder->fmt_in.video.i_height : 16;
id->p_encoder->fmt_in.video.i_visible_width =
id->p_encoder->fmt_out.video.i_visible_width
? id->p_encoder->fmt_out.video.i_visible_width
: id->p_decoder->fmt_in.video.i_visible_width
? id->p_decoder->fmt_in.video.i_visible_width : 16;
id->p_encoder->fmt_in.video.i_visible_height =
id->p_encoder->fmt_out.video.i_visible_height
? id->p_encoder->fmt_out.video.i_visible_height
: id->p_decoder->fmt_in.video.i_visible_height
? id->p_decoder->fmt_in.video.i_visible_height : 16;
id->p_encoder->fmt_in.video.i_frame_rate = ENC_FRAMERATE;
id->p_encoder->fmt_in.video.i_frame_rate_base = ENC_FRAMERATE_BASE;
id->p_encoder->i_threads = p_sys->i_threads;
id->p_encoder->p_cfg = p_sys->p_video_cfg;
id->p_encoder->p_module =
module_need( id->p_encoder, "encoder", p_sys->psz_venc, true );
if( !id->p_encoder->p_module )
{
msg_Err( p_stream, "cannot find video encoder (module:%s fourcc:%4.4s). Take a look few lines earlier to see possible reason.",
p_sys->psz_venc ? p_sys->psz_venc : "any",
(char *)&p_sys->i_vcodec );
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = 0;
free( id->p_decoder->p_owner );
return VLC_EGENERIC;
}
/* Close the encoder.
* We'll open it only when we have the first frame. */
module_unneed( id->p_encoder, id->p_encoder->p_module );
if( id->p_encoder->fmt_out.p_extra )
{
free( id->p_encoder->fmt_out.p_extra );
id->p_encoder->fmt_out.p_extra = NULL;
id->p_encoder->fmt_out.i_extra = 0;
}
id->p_encoder->p_module = NULL;
if( p_sys->i_threads >= 1 )
{
int i_priority = p_sys->b_high_priority ? VLC_THREAD_PRIORITY_OUTPUT :
VLC_THREAD_PRIORITY_VIDEO;
p_sys->id_video = id;
vlc_mutex_init( &p_sys->lock_out );
vlc_cond_init( &p_sys->cond );
p_sys->pp_pics = picture_fifo_New();
if( p_sys->pp_pics == NULL )
{
msg_Err( p_stream, "cannot create picture fifo" );
vlc_mutex_destroy( &p_sys->lock_out );
vlc_cond_destroy( &p_sys->cond );
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = NULL;
free( id->p_decoder->p_owner );
return VLC_ENOMEM;
}
p_sys->p_buffers = NULL;
p_sys->b_abort = false;
if( vlc_clone( &p_sys->thread, EncoderThread, p_sys, i_priority ) )
{
msg_Err( p_stream, "cannot spawn encoder thread" );
vlc_mutex_destroy( &p_sys->lock_out );
vlc_cond_destroy( &p_sys->cond );
picture_fifo_Delete( p_sys->pp_pics );
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = NULL;
free( id->p_decoder->p_owner );
return VLC_EGENERIC;
}
}
return VLC_SUCCESS;
}
