/* $Id: render.c,v 1.17 2005/04/14 17:37:54 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 "hbffmpeg.h"
struct hb_work_private_s
{
hb_job_t * job;
- ImgReSampleContext * context;
+ struct SwsContext * context;
AVPicture pic_tmp_in;
- AVPicture pic_tmp_out;
+ AVPicture pic_tmp_crop;
+ AVPicture pic_tmp_out;
hb_buffer_t * buf_scale;
hb_fifo_t * subtitle_queue;
+ hb_fifo_t * delay_queue;
+ int dropped_frames;
+ int extended_frames;
+ uint64_t last_start[4];
+ uint64_t last_stop[4];
+ uint64_t lost_time[4];
+ uint64_t total_lost_time;
+ uint64_t total_gained_time;
+ int64_t chapter_time;
+ int chapter_val;
+ int count_frames; // frames output so far
+ double frame_rate; // 90KHz ticks per frame (for CFR/PFR)
+ double out_last_stop; // where last frame ended (for CFR/PFR)
+ int drops; // frames dropped (for CFR/PFR)
+ int dups; // frames duped (for CFR/PFR)
};
int renderInit( hb_work_object_t *, hb_job_t * );
void renderClose( hb_work_object_t * );
hb_work_object_t hb_render =
-{
+{
WORK_RENDER,
"Renderer",
renderInit,
renderClose
};
+/*
+ * getU() & getV()
+ *
+ * Utility function that finds where the U is in the YUV sub-picture
+ *
+ * The Y data is at the top, followed by U and V, but the U and V
+ * are half the width of the Y, i.e. each chroma element covers 2x2
+ * of the Y's.
+ */
+static uint8_t *getU(uint8_t *data, int width, int height, int x, int y)
+{
+ return(&data[(y>>1) * ((width+1)>>1) + (x>>1) + width*height]);
+}
+
+static uint8_t *getV(uint8_t *data, int width, int height, int x, int y)
+{
+ int w2 = (width+1) >> 1, h2 = (height+1) >> 1;
+ return(&data[(y>>1) * w2 + (x>>1) + width*height + w2*h2]);
+}
+
static void ApplySub( hb_job_t * job, hb_buffer_t * buf,
hb_buffer_t ** _sub )
{
hb_buffer_t * sub = *_sub;
hb_title_t * title = job->title;
- int i, j, offset_top, offset_left;
- uint8_t * lum, * alpha, * out;
+ int i, j, offset_top, offset_left, margin_top, margin_percent;
+ uint8_t * lum, * alpha, * out, * sub_chromaU, * sub_chromaV;
+
+ /*
+ * Percent of height of picture that form a margin that subtitles
+ * should not be displayed within.
+ */
+ margin_percent = 2;
if( !sub )
{
return;
}
- /* If necessary, move the subtitle so it is not in a cropped zone.
- When it won't fit, we center it so we loose as much on both ends.
- Otherwise we try to leave a 20px margin around it. */
+ /*
+ * If necessary, move the subtitle so it is not in a cropped zone.
+ * When it won't fit, we center it so we lose as much on both ends.
+ * Otherwise we try to leave a 20px or 2% margin around it.
+ */
+ margin_top = ( ( title->height - job->crop[0] - job->crop[1] ) *
+ margin_percent ) / 100;
+
+ if( margin_top > 20 )
+ {
+ /*
+ * A maximum margin of 20px regardless of height of the picture.
+ */
+ margin_top = 20;
+ }
- if( sub->height > title->height - job->crop[0] - job->crop[1] - 40 )
+ if( sub->height > title->height - job->crop[0] - job->crop[1] -
+ ( margin_top * 2 ) )
+ {
+ /*
+ * The subtitle won't fit in the cropped zone, so center
+ * it vertically so we fit in as much as we can.
+ */
offset_top = job->crop[0] + ( title->height - job->crop[0] -
- job->crop[1] - sub->height ) / 2;
- else if( sub->y < job->crop[0] + 20 )
- offset_top = job->crop[0] + 20;
- else if( sub->y > title->height - job->crop[1] - 20 - sub->height )
- offset_top = title->height - job->crop[1] - 20 - sub->height;
+ job->crop[1] - sub->height ) / 2;
+ }
+ else if( sub->y < job->crop[0] + margin_top )
+ {
+ /*
+ * The subtitle fits in the cropped zone, but is currently positioned
+ * within our top margin, so move it outside of our margin.
+ */
+ offset_top = job->crop[0] + margin_top;
+ }
+ else if( sub->y > title->height - job->crop[1] - margin_top - sub->height )
+ {
+ /*
+ * The subtitle fits in the cropped zone, and is not within the top
+ * margin but is within the bottom margin, so move it to be above
+ * the margin.
+ */
+ offset_top = title->height - job->crop[1] - margin_top - sub->height;
+ }
else
+ {
+ /*
+ * The subtitle is fine where it is.
+ */
offset_top = sub->y;
+ }
if( sub->width > title->width - job->crop[2] - job->crop[3] - 40 )
offset_left = job->crop[2] + ( title->width - job->crop[2] -
lum = sub->data;
alpha = lum + sub->width * sub->height;
+ sub_chromaU = alpha + sub->width * sub->height;
+ sub_chromaV = sub_chromaU + sub->width * sub->height;
+
out = buf->data + offset_top * title->width + offset_left;
for( i = 0; i < sub->height; i++ )
{
if( offset_left + j >= 0 && offset_left + j < title->width )
{
+ uint8_t *chromaU, *chromaV;
+
+ /*
+ * Merge the luminance and alpha with the picture
+ */
out[j] = ( (uint16_t) out[j] * ( 16 - (uint16_t) alpha[j] ) +
(uint16_t) lum[j] * (uint16_t) alpha[j] ) >> 4;
+ /*
+ * Set the chroma (colour) based on whether there is
+ * any alpha at all. Don't try to blend with the picture.
+ */
+ chromaU = getU(buf->data, title->width, title->height,
+ offset_left+j, offset_top+i);
+
+ chromaV = getV(buf->data, title->width, title->height,
+ offset_left+j, offset_top+i);
+
+ if( alpha[j] > 0 )
+ {
+ /*
+ * Add the chroma from the sub-picture, as this is
+ * not a transparent element.
+ */
+ *chromaU = sub_chromaU[j];
+ *chromaV = sub_chromaV[j];
+ }
}
}
}
lum += sub->width;
alpha += sub->width;
+ sub_chromaU += sub->width;
+ sub_chromaV += sub->width;
out += title->width;
}
hb_buffer_close( _sub );
}
+// delete the buffer 'out' from the chain of buffers whose head is 'buf_out'.
+// out & buf_out must be non-null (checks prior to anywhere this routine
+// can be called guarantee this) and out must be on buf_out's chain
+// (all places that call this get 'out' while traversing the chain).
+// 'out' is freed and its predecessor is returned.
+static hb_buffer_t *delete_buffer_from_chain( hb_buffer_t **buf_out, hb_buffer_t *out)
+{
+ hb_buffer_t *succ = out->next;
+ hb_buffer_t *pred = *buf_out;
+ if ( pred == out )
+ {
+ // we're deleting the first buffer
+ *buf_out = succ;
+ }
+ else
+ {
+ // target isn't the first buf so search for its predecessor.
+ while ( pred->next != out )
+ {
+ pred = pred->next;
+ }
+ // found 'out' - remove it from the chain
+ pred->next = succ;
+ }
+ out->next = 0;
+ hb_buffer_close( &out );
+ return succ;
+}
+
+// insert buffer 'succ' after buffer chain element 'pred'.
+// caller must guarantee that 'pred' and 'succ' are non-null.
+static hb_buffer_t *insert_buffer_in_chain( hb_buffer_t *pred, hb_buffer_t *succ )
+{
+ succ->next = pred->next;
+ pred->next = succ;
+ return succ;
+}
+
+// This section of the code implements video frame rate control.
+// Since filters are allowed to duplicate and drop frames (which
+// changes the timing), this has to be the last thing done in render.
+//
+// There are three options, selected by the value of job->cfr:
+// 0 - Variable Frame Rate (VFR) or 'same as source': frame times
+// are left alone
+// 1 - Constant Frame Rate (CFR): Frame timings are adjusted so that all
+// frames are exactly job->vrate_base ticks apart. Frames are dropped
+// or duplicated if necessary to maintain this spacing.
+// 2 - Peak Frame Rate (PFR): job->vrate_base is treated as the peak
+// average frame rate. I.e., the average frame rate (current frame
+// end time divided by number of frames so far) is never allowed to be
+// greater than job->vrate_base and frames are dropped if necessary
+// to keep the average under this value. Other than those drops, frame
+// times are left alone.
+//
+
+static void adjust_frame_rate( hb_work_private_t *pv, hb_buffer_t **buf_out )
+{
+ hb_buffer_t *out = *buf_out;
+
+ while ( out && out->size > 0 )
+ {
+ // this frame has to start where the last one stopped.
+ out->start = pv->out_last_stop;
+
+ // compute where this frame would stop if the frame rate were constant
+ // (this is our target stopping time for CFR and earliest possible
+ // stopping time for PFR).
+ double cfr_stop = pv->frame_rate * ( pv->count_frames + 1 );
+
+ if ( cfr_stop - (double)out->stop >= pv->frame_rate )
+ {
+ // This frame stops a frame time or more in the past - drop it
+ // but don't lose its chapter mark.
+ if ( out->new_chap )
+ {
+ pv->chapter_time = out->start;
+ pv->chapter_val = out->new_chap;
+ }
+ ++pv->drops;
+ out = delete_buffer_from_chain( buf_out, out );
+ continue;
+ }
+
+ // at this point we know that this frame doesn't push the average
+ // rate over the limit so we just pass it on for PFR. For CFR we're
+ // going to return it (with its start & stop times modified) and
+ // we may have to dup it.
+ ++pv->count_frames;
+ if ( pv->job->cfr > 1 )
+ {
+ // PFR - we're going to keep the frame but may need to
+ // adjust it's stop time to meet the average rate constraint.
+ if ( out->stop <= cfr_stop )
+ {
+ out->stop = cfr_stop;
+ }
+ }
+ else
+ {
+ // we're doing CFR so we have to either trim some time from a
+ // buffer that ends too far in the future or, if the buffer is
+ // two or more frame times long, split it into multiple pieces,
+ // each of which is a frame time long.
+ double excess_dur = (double)out->stop - cfr_stop;
+ out->stop = cfr_stop;
+ for ( ; excess_dur >= pv->frame_rate; excess_dur -= cfr_stop )
+ {
+ /* next frame too far ahead - dup current frame */
+ hb_buffer_t *dup = hb_buffer_init( out->size );
+ memcpy( dup->data, out->data, out->size );
+ hb_buffer_copy_settings( dup, out );
+ dup->new_chap = 0;
+ dup->start = cfr_stop;
+ cfr_stop += pv->frame_rate;
+ dup->stop = cfr_stop;
+ out = insert_buffer_in_chain( out, dup );
+ ++pv->dups;
+ ++pv->count_frames;
+ }
+ }
+ pv->out_last_stop = out->stop;
+ out = out->next;
+ }
+}
+
int renderWork( hb_work_object_t * w, hb_buffer_t ** buf_in,
hb_buffer_t ** buf_out )
{
hb_job_t * job = pv->job;
hb_title_t * title = job->title;
hb_buffer_t * in = *buf_in, * buf_tmp_in = *buf_in;
+ hb_buffer_t * ivtc_buffer = NULL;
- int title_size = 3 * title->width * title->height / 2;
- int job_size = 3 * job->width * job->height / 2;
-
- if(!in->data)
+ if( in->size <= 0 )
{
- /* If the input buffer is end of stream, send out an empty one to the next stage as well. */
- *buf_out = hb_buffer_init(0);
- return HB_WORK_OK;
+ hb_buffer_t *head = NULL, *tail = NULL, *next;
+ int counter = 2;
+
+ /* If the input buffer is end of stream, send out an empty one
+ * to the next stage as well. To avoid losing the contents of
+ * the delay queue connect the buffers in the delay queue in
+ * the correct order, and add the end of stream buffer to the
+ * end.
+ */
+ while( ( next = hb_fifo_get( pv->delay_queue ) ) != NULL )
+ {
+
+ /* We can't use the given time stamps. Previous frames
+ might already have been extended, throwing off the
+ raw values fed to render.c. Instead, their
+ stop and start times are stored in arrays.
+ The 4th cached frame will be the to use.
+ If it needed its duration extended to make up
+ lost time, it will have happened above. */
+ next->start = pv->last_start[counter];
+ next->stop = pv->last_stop[counter--];
+
+ if( !head && !tail )
+ {
+ head = tail = next;
+ } else {
+ tail->next = next;
+ tail = next;
+ }
+ }
+ if( tail )
+ {
+ tail->next = in;
+ *buf_out = head;
+ if ( job->cfr )
+ {
+ adjust_frame_rate( pv, buf_out );
+ }
+ } else {
+ *buf_out = in;
+ }
+ *buf_in = NULL;
+ return HB_WORK_DONE;
}
-
+
+ /*
+ * During the indepth_scan ditch the buffers here before applying filters or attempting to
+ * use the subtitles.
+ */
+ if( job->indepth_scan )
+ {
+ *buf_out = NULL;
+ return HB_WORK_OK;
+ }
+
/* Push subtitles onto queue just in case we need to delay a frame */
if( in->sub )
{
{
hb_fifo_push( pv->subtitle_queue, hb_buffer_init(0) );
}
-
+
+ /* If there's a chapter mark remember it in case we delay or drop its frame */
+ if( in->new_chap )
+ {
+ pv->chapter_time = in->start;
+ pv->chapter_val = in->new_chap;
+ in->new_chap = 0;
+ }
+
/* Setup render buffer */
- hb_buffer_t * buf_render = hb_buffer_init( job_size );
+ hb_buffer_t * buf_render = hb_video_buffer_init( job->width, job->height );
/* Apply filters */
if( job->filters )
{
int filter_count = hb_list_count( job->filters );
int i;
-
+
for( i = 0; i < filter_count; i++ )
{
hb_filter_object_t * filter = hb_list_item( job->filters, i );
-
+
if( !filter )
{
continue;
- }
-
+ }
+
hb_buffer_t * buf_tmp_out = NULL;
-
+
int result = filter->work( buf_tmp_in,
- &buf_tmp_out,
- PIX_FMT_YUV420P,
- title->width,
- title->height,
+ &buf_tmp_out,
+ PIX_FMT_YUV420P,
+ title->width,
+ title->height,
filter->private_data );
-
- /*
- * FILTER_OK: set temp buffer to filter buffer, continue
- * FILTER_DELAY: set temp buffer to NULL, abort
- * FILTER_DROP: set temp buffer to NULL, pop subtitle, abort
- * FILTER_FAILED: leave temp buffer alone, continue
+
+ /*
+ * FILTER_OK: set temp buffer to filter buffer, continue
+ * FILTER_DELAY: set temp buffer to NULL, abort
+ * FILTER_DROP: set temp buffer to NULL, pop subtitle, abort
+ * FILTER_FAILED: leave temp buffer alone, continue
*/
if( result == FILTER_OK )
{
{
buf_tmp_in = NULL;
break;
- }
+ }
else if( result == FILTER_DROP )
{
- hb_fifo_get( pv->subtitle_queue );
+ /* We need to compensate for the time lost by dropping this frame.
+ Spread its duration out in quarters, because usually dropped frames
+ maintain a 1-out-of-5 pattern and this spreads it out amongst the remaining ones.
+ Store these in the lost_time array, which has 4 slots in it.
+ Because not every frame duration divides evenly by 4, and we can't lose the
+ remainder, we have to go through an awkward process to preserve it in the 4th array index. */
+ uint64_t temp_duration = buf_tmp_out->stop - buf_tmp_out->start;
+ pv->lost_time[0] += (temp_duration / 4);
+ pv->lost_time[1] += (temp_duration / 4);
+ pv->lost_time[2] += (temp_duration / 4);
+ pv->lost_time[3] += ( temp_duration - (temp_duration / 4) - (temp_duration / 4) - (temp_duration / 4) );
+
+ pv->total_lost_time += temp_duration;
+ pv->dropped_frames++;
+
+ /* Pop the frame's subtitle and dispose of it. */
+ hb_buffer_t * subtitles = hb_fifo_get( pv->subtitle_queue );
+ hb_buffer_close( &subtitles );
buf_tmp_in = NULL;
break;
}
}
- }
-
+ }
+
+ if( buf_tmp_in )
+ {
+ /* Cache frame start and stop times, so we can renumber
+ time stamps if dropping frames for VFR. */
+ int i;
+ for( i = 3; i >= 1; i-- )
+ {
+ pv->last_start[i] = pv->last_start[i-1];
+ pv->last_stop[i] = pv->last_stop[i-1];
+ }
+
+ /* In order to make sure we have continuous time stamps, store
+ the current frame's duration as starting when the last one stopped. */
+ pv->last_start[0] = pv->last_stop[1];
+ pv->last_stop[0] = pv->last_start[0] + (buf_tmp_in->stop - buf_tmp_in->start);
+ }
+
/* Apply subtitles */
if( buf_tmp_in )
{
- hb_buffer_t * subtitles = hb_fifo_get( pv->subtitle_queue );
+ hb_buffer_t * subtitles = hb_fifo_get( pv->subtitle_queue );
if( subtitles )
{
ApplySub( job, buf_tmp_in, &subtitles );
}
}
-
+
/* Apply crop/scale if specified */
if( buf_tmp_in && pv->context )
{
- avpicture_fill( &pv->pic_tmp_in, buf_tmp_in->data,
+ avpicture_fill( &pv->pic_tmp_in, buf_tmp_in->data,
PIX_FMT_YUV420P,
title->width, title->height );
-
- avpicture_fill( &pv->pic_tmp_out, buf_render->data,
+
+ avpicture_fill( &pv->pic_tmp_out, buf_render->data,
PIX_FMT_YUV420P,
job->width, job->height );
-
- img_resample( pv->context, &pv->pic_tmp_out, &pv->pic_tmp_in );
-
+
+ // Crop; this alters the pointer to the data to point to the correct place for cropped frame
+ av_picture_crop( &pv->pic_tmp_crop, &pv->pic_tmp_in, PIX_FMT_YUV420P,
+ job->crop[0], job->crop[2] );
+
+ // Scale pic_crop into pic_render according to the context set up in renderInit
+ sws_scale(pv->context,
+ pv->pic_tmp_crop.data, pv->pic_tmp_crop.linesize,
+ 0, title->height - (job->crop[0] + job->crop[1]),
+ pv->pic_tmp_out.data, pv->pic_tmp_out.linesize);
+
hb_buffer_copy_settings( buf_render, buf_tmp_in );
-
+
buf_tmp_in = buf_render;
- }
+ }
/* Set output to render buffer */
(*buf_out) = buf_render;
{
hb_buffer_close( buf_in );
*buf_in = NULL;
- }
+ }
if( buf_out && *buf_out )
{
- hb_buffer_close( buf_out );
+ hb_buffer_close( buf_out );
*buf_out = NULL;
}
}
else if( buf_tmp_in != buf_render )
- {
+ {
/* Copy temporary results and settings into render buffer */
memcpy( buf_render->data, buf_tmp_in->data, buf_render->size );
hb_buffer_copy_settings( buf_render, buf_tmp_in );
}
+ if (*buf_out )
+ {
+ hb_fifo_push( pv->delay_queue, *buf_out );
+ *buf_out = NULL;
+ }
+
+ /*
+ * Keep the last three frames in our queue, this ensures that we have the last
+ * two always in there should we need to rewrite the durations on them.
+ */
+
+ if( hb_fifo_size( pv->delay_queue ) >= 4 )
+ {
+ *buf_out = hb_fifo_get( pv->delay_queue );
+ }
+
+ if( *buf_out )
+ {
+ /* The current frame exists. That means it hasn't been dropped by a filter.
+ Make it accessible as ivtc_buffer so we can edit its duration if needed. */
+ ivtc_buffer = *buf_out;
+
+ if( pv->lost_time[3] > 0 )
+ {
+ /*
+ * A frame's been dropped earlier by VFR detelecine.
+ * Gotta make up the lost time. This will also
+ * slow down the video.
+ * The dropped frame's has to be accounted for, so
+ * divvy it up amongst the 4 frames left behind.
+ * This is what the delay_queue is for;
+ * telecined sequences start 2 frames before
+ * the dropped frame, so to slow down the right
+ * ones you need a 2 frame delay between
+ * reading input and writing output.
+ */
+
+ /* We want to extend the outputted frame's duration by the value
+ stored in the 4th slot of the lost_time array. Because we need
+ to adjust all the values in the array so they're contiguous,
+ extend the duration inside the array first, before applying
+ it to the current frame buffer. */
+ pv->last_stop[3] += pv->lost_time[3];
+
+ /* Log how much time has been added back in to the video. */
+ pv->total_gained_time += pv->lost_time[3];
+
+ /* We've pulled the 4th value from the lost_time array
+ and added it to the last_stop array's 4th slot. Now, rotate the
+ lost_time array so the 4th slot now holds the 3rd's value, and
+ so on down the line, and set the 0 index to a value of 0. */
+ int i;
+ for( i=2; i >= 0; i--)
+ {
+ pv->lost_time[i+1] = pv->lost_time[i];
+ }
+ pv->lost_time[0] = 0;
+
+ /* Log how many frames have had their durations extended. */
+ pv->extended_frames++;
+ }
+
+ /* We can't use the given time stamps. Previous frames
+ might already have been extended, throwing off the
+ raw values fed to render.c. Instead, their
+ stop and start times are stored in arrays.
+ The 4th cached frame will be the to use.
+ If it needed its duration extended to make up
+ lost time, it will have happened above. */
+ ivtc_buffer->start = pv->last_start[3];
+ ivtc_buffer->stop = pv->last_stop[3];
+
+ /* Set the 3rd cached frame to start when this one stops,
+ and so on down the line. If any of them need to be
+ extended as well to make up lost time, it'll be handled
+ on the next loop through the renderer. */
+ int i;
+ for (i = 2; i >= 0; i--)
+ {
+ int temp_duration = pv->last_stop[i] - pv->last_start[i];
+ pv->last_start[i] = pv->last_stop[i+1];
+ pv->last_stop[i] = pv->last_start[i] + temp_duration;
+ }
+
+ /* If we have a pending chapter mark and this frame is at
+ or after the time of the mark, mark this frame & clear
+ our pending mark. */
+ if( pv->chapter_time && pv->chapter_time <= ivtc_buffer->start )
+ {
+ ivtc_buffer->new_chap = pv->chapter_val;
+ pv->chapter_time = 0;
+ }
+
+ }
+
+ if ( buf_out && *buf_out && job->cfr )
+ {
+ adjust_frame_rate( pv, buf_out );
+ }
return HB_WORK_OK;
}
void renderClose( hb_work_object_t * w )
{
- hb_work_private_t * pv = w->private_data;
-
+ hb_work_private_t * pv = w->private_data;
+
+ if ( pv->job->cfr )
+ {
+ hb_log("render: %d frames output, %d dropped and %d duped for CFR/PFR",
+ pv->count_frames, pv->drops, pv->dups );
+ }
+
+ hb_interjob_t * interjob = hb_interjob_get( w->private_data->job->h );
+
+ /* Preserve dropped frame count for more accurate framerates in 2nd passes. */
+ interjob->render_dropped = pv->dropped_frames;
+
+ hb_log("render: lost time: %"PRId64" (%i frames)", pv->total_lost_time, pv->dropped_frames);
+ hb_log("render: gained time: %"PRId64" (%i frames) (%"PRId64" not accounted for)", pv->total_gained_time, pv->extended_frames, pv->total_lost_time - pv->total_gained_time);
+ if (pv->dropped_frames)
+ hb_log("render: average dropped frame duration: %"PRId64, (pv->total_lost_time / pv->dropped_frames) );
+
/* Cleanup subtitle queue */
if( pv->subtitle_queue )
{
hb_fifo_close( &pv->subtitle_queue );
}
-
- /* Cleanup filters */
- /* TODO: Move to work.c? */
- if( pv->job->filters )
+
+ if( pv->delay_queue )
{
- int filter_count = hb_list_count( pv->job->filters );
- int i;
-
- for( i = 0; i < filter_count; i++ )
- {
- hb_filter_object_t * filter = hb_list_item( pv->job->filters, i );
-
- if( !filter ) continue;
+ hb_fifo_close( &pv->delay_queue );
+ }
- filter->close( filter->private_data );
- }
-
- hb_list_close( &pv->job->filters );
- }
-
/* Cleanup render work structure */
free( pv );
- w->private_data = NULL;
+ w->private_data = NULL;
}
int renderInit( hb_work_object_t * w, hb_job_t * job )
-{
+{
/* Allocate new private work object */
hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
pv->job = job;
w->private_data = pv;
+ uint32_t swsflags;
+
+ swsflags = SWS_LANCZOS | SWS_ACCURATE_RND;
/* Get title and title size */
- hb_title_t * title = job->title;
- int title_size = 3 * title->width * title->height / 2;
-
+ hb_title_t * title = job->title;
+
/* If crop or scale is specified, setup rescale context */
if( job->crop[0] || job->crop[1] || job->crop[2] || job->crop[3] ||
job->width != title->width || job->height != title->height )
{
- pv->context = img_resample_full_init(
- job->width, job->height, title->width, title->height,
- job->crop[0], job->crop[1], job->crop[2], job->crop[3],
- 0, 0, 0, 0 );
- }
-
+ pv->context = sws_getContext(title->width - (job->crop[2] + job->crop[3]),
+ title->height - (job->crop[0] + job->crop[1]),
+ PIX_FMT_YUV420P,
+ job->width, job->height, PIX_FMT_YUV420P,
+ swsflags, NULL, NULL, NULL);
+ }
+
/* Setup FIFO queue for subtitle cache */
- pv->subtitle_queue = hb_fifo_init( 8 );
-
+ pv->subtitle_queue = hb_fifo_init( 8, 1 );
+ pv->delay_queue = hb_fifo_init( 8, 1 );
+
+ /* VFR IVTC needs a bunch of time-keeping variables to track
+ how many frames are dropped, how many are extended, what the
+ last 4 start and stop times were (so they can be modified),
+ how much time has been lost and gained overall, how much time
+ the latest 4 frames should be extended by, and where chapter
+ markers are (so they can be saved if their frames are dropped.) */
+ pv->dropped_frames = 0;
+ pv->extended_frames = 0;
+ pv->last_start[0] = 0;
+ pv->last_stop[0] = 0;
+ pv->total_lost_time = 0;
+ pv->total_gained_time = 0;
+ pv->lost_time[0] = 0; pv->lost_time[1] = 0; pv->lost_time[2] = 0; pv->lost_time[3] = 0;
+ pv->chapter_time = 0;
+ pv->chapter_val = 0;
+
+ pv->frame_rate = (double)job->vrate_base * (1./300.);
+
/* Setup filters */
/* TODO: Move to work.c? */
if( job->filters )
{
int filter_count = hb_list_count( job->filters );
int i;
-
+
for( i = 0; i < filter_count; i++ )
{
hb_filter_object_t * filter = hb_list_item( job->filters, i );
if( !filter ) continue;
-
+
filter->private_data = filter->init( PIX_FMT_YUV420P,
title->width,
title->height,
filter->settings );
}
}
-
+
return 0;
}
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