* (http://www.bbc.co.uk/rd/projects/dirac/index.shtml)
* (http://diracvideo.org)
*****************************************************************************
- * Copyright (C) 2008 the VideoLAN team
- * $Id$
+ * Copyright (C) 2008-2010 the VideoLAN team
*
* Authors: Jonathan Rosser <jonathan.rosser@gmail.com>
* David Flynn <davidf at rd dot bbc.co.uk>
+ * Anuradha Suraparaju <asuraparaju at gmail dot com> (encoding)
*
* 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
# include "config.h"
#endif
+#include <assert.h>
+
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_codec.h>
*****************************************************************************/
static int OpenDecoder ( vlc_object_t * );
static void CloseDecoder ( vlc_object_t * );
+static int OpenEncoder ( vlc_object_t * );
+static void CloseEncoder ( vlc_object_t * );
+
+#define ENC_CFG_PREFIX "sout-schro-"
+
+#define ENC_CHROMAFMT "chroma_fmt"
+#define ENC_CHROMAFMT_TEXT N_("Chroma format")
+#define ENC_CHROMAFMT_LONGTEXT N_("Picking chroma format will force a " \
+ "conversion of the video into that format")
+static const char *const enc_chromafmt_list[] =
+ { "420", "422", "444" };
+static const char *const enc_chromafmt_list_text[] =
+ { N_("4:2:0"), N_("4:2:2"), N_("4:4:4") };
+
+
+#define ENC_CODINGMODE "auto_coding_mode"
+#define ENC_CODINGMODE_TEXT N_("Automate picture coding mode")
+#define ENC_CODINGMODE_LONGTEXT N_("Use the input picture to determine how to" \
+ " code it - interlaced or progressive")
+
+static const char **ppsz_enc_options = NULL;
vlc_module_begin ()
set_category( CAT_INPUT )
set_subcategory( SUBCAT_INPUT_VCODEC )
- set_description( N_("Schroedinger video decoder") )
+ set_shortname( "Schroedinger" )
+ set_description( N_("Dirac video decoder using libschroedinger") )
set_capability( "decoder", 200 )
set_callbacks( OpenDecoder, CloseDecoder )
add_shortcut( "schroedinger" )
+
+ add_submodule()
+ set_section( N_("Encoding") , NULL )
+ set_description( N_("Dirac video encoder using libschroedinger") )
+ set_capability( "encoder", 110 )
+ set_callbacks( OpenEncoder, CloseEncoder )
+ add_shortcut( "schroedinger", "schro" )
+
+ int i_numopts = schro_encoder_get_n_settings();
+ /* Allocate for schro encoder options + chroma format + coding mode
+ + null */
+ ppsz_enc_options = (const char **)malloc( sizeof( char * )*( i_numopts + 3 ) );
+ if( unlikely( ppsz_enc_options == NULL ) )
+ return VLC_ENOMEM;
+
+ for( int i = 0; i < i_numopts; ++i ) {
+ const SchroEncoderSetting *p_setting = schro_encoder_get_setting_info( i );
+ bool b_advanced = ( strlen( p_setting->name ) > 6 && !strncmp( p_setting->name, "magic_ ", 6 ) );
+ char *p_cfg_setting_name = malloc( strlen( ENC_CFG_PREFIX ) + strlen( p_setting->name ) + 1 );
+
+ if( unlikely( p_cfg_setting_name == NULL ) )
+ return VLC_ENOMEM;
+
+ strcpy( p_cfg_setting_name, ENC_CFG_PREFIX );
+ strcat( p_cfg_setting_name, p_setting->name );
+
+ ppsz_enc_options[i] = strdup( p_setting->name );
+ switch( p_setting->type ) {
+ case SCHRO_ENCODER_SETTING_TYPE_BOOLEAN:
+ add_bool( p_cfg_setting_name, p_setting->default_value, p_setting->name, p_setting->name, b_advanced );
+ break;
+ case SCHRO_ENCODER_SETTING_TYPE_INT:
+ add_integer( p_cfg_setting_name, p_setting->default_value, p_setting->name, p_setting->name, b_advanced );
+ change_integer_range( p_setting->min, p_setting->max );
+ break;
+ case SCHRO_ENCODER_SETTING_TYPE_DOUBLE:
+ add_float( p_cfg_setting_name, p_setting->default_value, p_setting->name, p_setting->name, b_advanced );
+ change_float_range( p_setting->min, p_setting->max );
+ break;
+ case SCHRO_ENCODER_SETTING_TYPE_ENUM:
+ add_string( p_cfg_setting_name, p_setting->enum_list[(int)p_setting->default_value], p_setting->name, p_setting->name, b_advanced );
+ vlc_config_set( p_config, VLC_CONFIG_LIST, (int)(p_setting->max-p_setting->min+1), p_setting->enum_list, p_setting->enum_list, 0 );
+ break;
+ default:
+ break;
+ }
+ free( p_cfg_setting_name );
+ }
+
+ ppsz_enc_options[i_numopts] = strdup( ENC_CHROMAFMT );
+ add_string( ENC_CFG_PREFIX ENC_CHROMAFMT, "420",
+ ENC_CHROMAFMT_TEXT, ENC_CHROMAFMT_LONGTEXT, false )
+ change_string_list( enc_chromafmt_list, enc_chromafmt_list_text, 0 );
+
+ ppsz_enc_options[i_numopts+1] = strdup( ENC_CODINGMODE );
+ add_bool( ENC_CFG_PREFIX ENC_CODINGMODE, true,
+ ENC_CODINGMODE_TEXT, ENC_CODINGMODE_LONGTEXT, false )
+
+ ppsz_enc_options[i_numopts+2] = NULL;
+
vlc_module_end ()
/*****************************************************************************
p_dec->p_sys = p_sys;
p_sys->p_schro = p_schro;
p_sys->p_format = NULL;
- p_sys->i_lastpts = -1;
+ p_sys->i_lastpts = VLC_TS_INVALID;
p_sys->i_frame_pts_delta = 0;
/* Set output properties */
static void SetVideoFormat( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
- double f_aspect;
p_sys->p_format = schro_decoder_get_video_format(p_sys->p_schro);
if( p_sys->p_format == NULL ) return;
p_dec->fmt_out.video.i_height = p_sys->p_format->height;
/* aspect_ratio_[numerator|denominator] describes the pixel aspect ratio */
- f_aspect = (double)
- ( p_sys->p_format->aspect_ratio_numerator * p_sys->p_format->width ) /
- ( p_sys->p_format->aspect_ratio_denominator * p_sys->p_format->height);
-
- p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * f_aspect;
+ p_dec->fmt_out.video.i_sar_num = p_sys->p_format->aspect_ratio_numerator;
+ p_dec->fmt_out.video.i_sar_den = p_sys->p_format->aspect_ratio_denominator;
p_dec->fmt_out.video.i_frame_rate =
p_sys->p_format->frame_rate_numerator;
if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY ) {
schro_decoder_reset( p_sys->p_schro );
- p_sys->i_lastpts = -1;
+ p_sys->i_lastpts = VLC_TS_INVALID;
block_Release( p_block );
*pp_block = NULL;
return NULL;
p_schrobuffer = schro_buffer_new_with_data( p_block->p_buffer, p_block->i_buffer );
p_schrobuffer->free = SchroBufferFree;
p_schrobuffer->priv = p_block;
- if( p_block->i_pts != VLC_TS_INVALID ) {
+ if( p_block->i_pts > VLC_TS_INVALID ) {
mtime_t *p_pts = malloc( sizeof(*p_pts) );
if( p_pts ) {
*p_pts = p_block->i_pts;
p_pic->date = *(mtime_t*) p_tag->value;
schro_tag_free( p_tag );
}
- else if( p_sys->i_lastpts >= 0 )
+ else if( p_sys->i_lastpts > VLC_TS_INVALID )
{
/* NB, this shouldn't happen since the packetizer does a
* very thorough job of inventing timestamps. The
}
}
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static block_t *Encode( encoder_t *p_enc, picture_t *p_pict );
+
+
+/*****************************************************************************
+ * picture_pts_t : store pts alongside picture number, not carried through
+ * encoder
+ *****************************************************************************/
+struct picture_pts_t
+{
+ bool b_empty; /* entry is invalid */
+ uint32_t u_pnum; /* dirac picture number */
+ mtime_t i_pts; /* associated pts */
+};
+
+/*****************************************************************************
+ * encoder_sys_t : Schroedinger encoder descriptor
+ *****************************************************************************/
+#define SCHRO_PTS_TLB_SIZE 256
+struct encoder_sys_t
+{
+ /*
+ * Schro properties
+ */
+ SchroEncoder *p_schro;
+ SchroVideoFormat *p_format;
+ int started;
+ bool b_auto_field_coding;
+
+ uint32_t i_input_picnum;
+ block_fifo_t *p_dts_fifo;
+
+ block_t *p_chain;
+
+ struct picture_pts_t pts_tlb[SCHRO_PTS_TLB_SIZE];
+ mtime_t i_pts_offset;
+ mtime_t i_field_time;
+
+ bool b_eos_signalled;
+ bool b_eos_pulled;
+};
+
+static struct
+{
+ unsigned int i_height;
+ int i_approx_fps;
+ SchroVideoFormatEnum i_vf;
+} schro_format_guess[] = {
+ /* Important: Keep this list ordered in ascending picture height */
+ {1, 0, SCHRO_VIDEO_FORMAT_CUSTOM},
+ {120, 15, SCHRO_VIDEO_FORMAT_QSIF},
+ {144, 12, SCHRO_VIDEO_FORMAT_QCIF},
+ {240, 15, SCHRO_VIDEO_FORMAT_SIF},
+ {288, 12, SCHRO_VIDEO_FORMAT_CIF},
+ {480, 30, SCHRO_VIDEO_FORMAT_SD480I_60},
+ {480, 15, SCHRO_VIDEO_FORMAT_4SIF},
+ {576, 12, SCHRO_VIDEO_FORMAT_4CIF},
+ {576, 25, SCHRO_VIDEO_FORMAT_SD576I_50},
+ {720, 50, SCHRO_VIDEO_FORMAT_HD720P_50},
+ {720, 60, SCHRO_VIDEO_FORMAT_HD720P_60},
+ {1080, 24, SCHRO_VIDEO_FORMAT_DC2K_24},
+ {1080, 25, SCHRO_VIDEO_FORMAT_HD1080I_50},
+ {1080, 30, SCHRO_VIDEO_FORMAT_HD1080I_60},
+ {1080, 50, SCHRO_VIDEO_FORMAT_HD1080P_50},
+ {1080, 60, SCHRO_VIDEO_FORMAT_HD1080P_60},
+ {2160, 24, SCHRO_VIDEO_FORMAT_DC4K_24},
+ {0, 0, 0},
+};
+
+/*****************************************************************************
+ * ResetPTStlb: Purge all entries in @p_enc@'s PTS-tlb
+ *****************************************************************************/
+static void ResetPTStlb( encoder_t *p_enc )
+{
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ for( int i=0; i<SCHRO_PTS_TLB_SIZE; i++ )
+ {
+ p_sys->pts_tlb[i].b_empty = true;
+ }
+}
+
+
+/*****************************************************************************
+ * StorePicturePTS: Store the PTS value for a particular picture number
+ *****************************************************************************/
+static void StorePicturePTS( encoder_t *p_enc, uint32_t u_pnum, mtime_t i_pts )
+{
+ encoder_sys_t *p_sys = p_enc->p_sys;
+
+ for( int i=0; i<SCHRO_PTS_TLB_SIZE; i++ )
+ {
+ if( p_sys->pts_tlb[i].b_empty )
+ {
+ p_sys->pts_tlb[i].u_pnum = u_pnum;
+ p_sys->pts_tlb[i].i_pts = i_pts;
+ p_sys->pts_tlb[i].b_empty = false;
+
+ return;
+ }
+ }
+
+ msg_Err( p_enc, "Could not store PTS %"PRId64" for frame %u", i_pts, u_pnum );
+}
+
+/*****************************************************************************
+ * GetPicturePTS: Retrieve the PTS value for a particular picture number
+ *****************************************************************************/
+static mtime_t GetPicturePTS( encoder_t *p_enc, uint32_t u_pnum )
+{
+ encoder_sys_t *p_sys = p_enc->p_sys;
+
+ for( int i=0; i<SCHRO_PTS_TLB_SIZE; i++ )
+ {
+ if( !p_sys->pts_tlb[i].b_empty &&
+ p_sys->pts_tlb[i].u_pnum == u_pnum )
+ {
+ p_sys->pts_tlb[i].b_empty = true;
+ return p_sys->pts_tlb[i].i_pts;
+ }
+ }
+
+ msg_Err( p_enc, "Could not retrieve PTS for picture %u", u_pnum );
+ return 0;
+}
+
+static inline bool SchroSetEnum( const encoder_t *p_enc, const SchroEncoderSetting *p_setting, const char *psz_value ) {
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ if( psz_value && p_setting && p_setting->type == SCHRO_ENCODER_SETTING_TYPE_ENUM ) {
+ int i_index = -1;
+ int i_list_size = p_setting->max - p_setting->min + 1;
+ for( int i = 0; i < i_list_size; ++i ) {
+ if( strcmp( p_setting->enum_list[i], psz_value ) )
+ continue;
+ i_index = p_setting->min + i;
+ schro_encoder_setting_set_double( p_sys->p_schro, p_setting->name, i_index );
+ return true;
+ }
+ if( i_index == -1 ) {
+ msg_Err( p_enc, "Invalid %s: %s", p_setting->name, psz_value );
+ }
+ }
+ return false;
+}
+
+static bool SetEncChromaFormat( encoder_t *p_enc, uint32_t i_codec )
+{
+ encoder_sys_t *p_sys = p_enc->p_sys;
+
+ switch( i_codec ) {
+ case VLC_CODEC_I420:
+ p_enc->fmt_in.i_codec = i_codec;
+ p_enc->fmt_in.video.i_bits_per_pixel = 12;
+ p_sys->p_format->chroma_format = SCHRO_CHROMA_420;
+ break;
+ case VLC_CODEC_I422:
+ p_enc->fmt_in.i_codec = i_codec;
+ p_enc->fmt_in.video.i_bits_per_pixel = 16;
+ p_sys->p_format->chroma_format = SCHRO_CHROMA_422;
+ break;
+ case VLC_CODEC_I444:
+ p_enc->fmt_in.i_codec = i_codec;
+ p_enc->fmt_in.video.i_bits_per_pixel = 24;
+ p_sys->p_format->chroma_format = SCHRO_CHROMA_444;
+ break;
+ default:
+ return false;
+ }
+
+ return true;
+}
+
+
+/*****************************************************************************
+ * OpenEncoder: probe the encoder and return score
+ *****************************************************************************/
+static int OpenEncoder( vlc_object_t *p_this )
+{
+ encoder_t *p_enc = (encoder_t *)p_this;
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ int i_tmp;
+ float f_tmp;
+ bool b_tmp;
+ char *psz_tmp;
+
+ if( p_enc->fmt_out.i_codec != VLC_CODEC_DIRAC &&
+ !p_enc->b_force )
+ {
+ return VLC_EGENERIC;
+ }
+
+ if( !p_enc->fmt_in.video.i_frame_rate || !p_enc->fmt_in.video.i_frame_rate_base ||
+ !p_enc->fmt_in.video.i_height || !p_enc->fmt_in.video.i_width )
+ {
+ msg_Err( p_enc, "Framerate and picture dimensions must be non-zero" );
+ return VLC_EGENERIC;
+ }
+
+ /* Allocate the memory needed to store the decoder's structure */
+ if( ( p_sys = calloc( 1, sizeof( *p_sys ) ) ) == NULL )
+ return VLC_ENOMEM;
+
+ p_enc->p_sys = p_sys;
+ p_enc->pf_encode_video = Encode;
+ p_enc->fmt_out.i_codec = VLC_CODEC_DIRAC;
+ p_enc->fmt_out.i_cat = VIDEO_ES;
+
+ if( ( p_sys->p_dts_fifo = block_FifoNew() ) == NULL )
+ {
+ CloseEncoder( p_this );
+ return VLC_ENOMEM;
+ }
+
+ ResetPTStlb( p_enc );
+
+ /* guess the video format based upon number of lines and picture height */
+ int i = 0;
+ SchroVideoFormatEnum guessed_video_fmt = SCHRO_VIDEO_FORMAT_CUSTOM;
+ /* Pick the dirac_video_format in this order of preference:
+ * 1. an exact match in frame height and an approximate fps match
+ * 2. the previous preset with a smaller number of lines.
+ */
+ do
+ {
+ if( schro_format_guess[i].i_height > p_enc->fmt_in.video.i_height )
+ {
+ guessed_video_fmt = schro_format_guess[i-1].i_vf;
+ break;
+ }
+ if( schro_format_guess[i].i_height != p_enc->fmt_in.video.i_height )
+ continue;
+ int src_fps = p_enc->fmt_in.video.i_frame_rate / p_enc->fmt_in.video.i_frame_rate_base;
+ int delta_fps = abs( schro_format_guess[i].i_approx_fps - src_fps );
+ if( delta_fps > 2 )
+ continue;
+
+ guessed_video_fmt = schro_format_guess[i].i_vf;
+ break;
+ } while( schro_format_guess[++i].i_height );
+
+ schro_init();
+ p_sys->p_schro = schro_encoder_new();
+ if( !p_sys->p_schro ) {
+ msg_Err( p_enc, "Failed to initialize libschroedinger encoder" );
+ return VLC_EGENERIC;
+ }
+ schro_encoder_set_packet_assembly( p_sys->p_schro, true );
+
+ if( !( p_sys->p_format = schro_encoder_get_video_format( p_sys->p_schro ) ) ) {
+ msg_Err( p_enc, "Failed to get Schroedigner video format" );
+ schro_encoder_free( p_sys->p_schro );
+ return VLC_EGENERIC;
+ }
+
+ /* initialise the video format parameters to the guessed format */
+ schro_video_format_set_std_video_format( p_sys->p_format, guessed_video_fmt );
+
+ /* constants set from the input video format */
+ p_sys->p_format->width = p_enc->fmt_in.video.i_width;
+ p_sys->p_format->height = p_enc->fmt_in.video.i_height;
+ p_sys->p_format->frame_rate_numerator = p_enc->fmt_in.video.i_frame_rate;
+ p_sys->p_format->frame_rate_denominator = p_enc->fmt_in.video.i_frame_rate_base;
+ unsigned u_asr_num, u_asr_den;
+ vlc_ureduce( &u_asr_num, &u_asr_den,
+ p_enc->fmt_in.video.i_sar_num,
+ p_enc->fmt_in.video.i_sar_den, 0 );
+ p_sys->p_format->aspect_ratio_numerator = u_asr_num;
+ p_sys->p_format->aspect_ratio_denominator = u_asr_den;
+
+ config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
+
+ int i_numopts = schro_encoder_get_n_settings();
+
+ for( int i = 0; i < i_numopts; ++i ) {
+ const SchroEncoderSetting *p_setting = schro_encoder_get_setting_info( i );
+ char *p_cfg_setting_name = malloc( strlen( ENC_CFG_PREFIX ) + strlen( p_setting->name ) + 1 );
+ if( unlikely( p_cfg_setting_name == NULL ) )
+ return VLC_ENOMEM;
+
+ strcpy( p_cfg_setting_name, ENC_CFG_PREFIX );
+ strcat( p_cfg_setting_name, p_setting->name );
+
+ switch( p_setting->type ) {
+ case SCHRO_ENCODER_SETTING_TYPE_BOOLEAN:
+ schro_encoder_setting_set_double ( p_sys->p_schro, p_setting->name, var_GetBool( p_enc, p_cfg_setting_name ) );
+ break;
+ case SCHRO_ENCODER_SETTING_TYPE_INT:
+ i_tmp = var_GetInteger( p_enc, p_cfg_setting_name );
+ schro_encoder_setting_set_double( p_sys->p_schro, p_setting->name, i_tmp );
+ /* A kludge to set bitrate to the value in sout-transcode-vb */
+ if( !strcmp( p_setting->name, "bitrate" ) ) {
+ if( i_tmp == p_setting->default_value )
+ schro_encoder_setting_set_double( p_sys->p_schro, p_setting->name, p_enc->fmt_out.i_bitrate );
+ p_enc->fmt_out.i_bitrate = schro_encoder_setting_get_double( p_sys->p_schro, p_setting->name );
+ }
+ break;
+ case SCHRO_ENCODER_SETTING_TYPE_DOUBLE:
+ f_tmp = var_GetFloat( p_enc, p_cfg_setting_name );
+ if( f_tmp >= 0.0 )
+ schro_encoder_setting_set_double( p_sys->p_schro, p_setting->name, f_tmp );
+ break;
+ case SCHRO_ENCODER_SETTING_TYPE_ENUM:
+ psz_tmp = var_GetString( p_enc, p_cfg_setting_name );
+ if( !psz_tmp )
+ goto error;
+ else if( *psz_tmp != '\0' ) {
+ if( !SchroSetEnum( p_enc, p_setting, psz_tmp ) ) {
+ free( psz_tmp );
+ goto error;
+ }
+ }
+ free( psz_tmp );
+ break;
+ default:
+ break;
+ }
+ free( p_cfg_setting_name );
+ }
+
+ psz_tmp = var_GetString( p_enc, ENC_CFG_PREFIX ENC_CHROMAFMT );
+ if( !psz_tmp )
+ goto error;
+ else {
+ uint32_t i_codec;
+ if( !strcmp( psz_tmp, "420" ) ) {
+ i_codec = VLC_CODEC_I420;
+ }
+ else if( !strcmp( psz_tmp, "422" ) ) {
+ i_codec = VLC_CODEC_I422;
+ }
+ else if( !strcmp( psz_tmp, "444" ) ) {
+ i_codec = VLC_CODEC_I444;
+ }
+ else {
+ msg_Err( p_enc, "Invalid chroma format: %s", psz_tmp );
+ free( psz_tmp );
+ goto error;
+ }
+ SetEncChromaFormat( p_enc, i_codec );
+ }
+ free( psz_tmp );
+
+
+ b_tmp = var_GetBool( p_enc, ENC_CFG_PREFIX ENC_CODINGMODE );
+ if( b_tmp == true )
+ p_sys->b_auto_field_coding = true;
+ else
+ p_sys->b_auto_field_coding = false;
+
+ p_sys->started = 0;
+
+ return VLC_SUCCESS;
+error:
+ CloseEncoder( p_this );
+ return VLC_EGENERIC;
+}
+
+
+struct enc_picture_free_t
+{
+ picture_t *p_pic;
+ encoder_t *p_enc;
+};
+
+/*****************************************************************************
+ * EncSchroFrameFree: schro_frame callback to release the associated picture_t
+ * When schro_encoder_reset() is called there will be pictures in the
+ * encoding pipeline that need to be released rather than displayed.
+ *****************************************************************************/
+static void EncSchroFrameFree( SchroFrame *frame, void *priv )
+{
+ struct enc_picture_free_t *p_free = priv;
+
+ if( !p_free )
+ return;
+
+ picture_Release( p_free->p_pic );
+ free( p_free );
+ (void)frame;
+}
+
+/*****************************************************************************
+ * CreateSchroFrameFromPic: wrap a picture_t in a SchroFrame
+ *****************************************************************************/
+static SchroFrame *CreateSchroFrameFromInputPic( encoder_t *p_enc, picture_t *p_pic )
+{
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ SchroFrame *p_schroframe = schro_frame_new();
+ struct enc_picture_free_t *p_free;
+
+ if( !p_schroframe )
+ return NULL;
+
+ if( !p_pic )
+ return NULL;
+
+ p_schroframe->format = SCHRO_FRAME_FORMAT_U8_420;
+ if( p_sys->p_format->chroma_format == SCHRO_CHROMA_422 )
+ {
+ p_schroframe->format = SCHRO_FRAME_FORMAT_U8_422;
+ }
+ else if( p_sys->p_format->chroma_format == SCHRO_CHROMA_444 )
+ {
+ p_schroframe->format = SCHRO_FRAME_FORMAT_U8_444;
+ }
+
+ p_schroframe->width = p_sys->p_format->width;
+ p_schroframe->height = p_sys->p_format->height;
+
+ p_free = malloc( sizeof( *p_free ) );
+ if( unlikely( p_free == NULL ) ) {
+ schro_frame_unref( p_schroframe );
+ return NULL;
+ }
+
+ p_free->p_pic = p_pic;
+ p_free->p_enc = p_enc;
+ schro_frame_set_free_callback( p_schroframe, EncSchroFrameFree, p_free );
+
+ for( int i=0; i<3; i++ )
+ {
+ p_schroframe->components[i].width = p_pic->p[i].i_visible_pitch;
+ p_schroframe->components[i].stride = p_pic->p[i].i_pitch;
+ p_schroframe->components[i].height = p_pic->p[i].i_visible_lines;
+ p_schroframe->components[i].length =
+ p_pic->p[i].i_pitch * p_pic->p[i].i_lines;
+ p_schroframe->components[i].data = p_pic->p[i].p_pixels;
+
+ if( i!=0 )
+ {
+ p_schroframe->components[i].v_shift =
+ SCHRO_FRAME_FORMAT_V_SHIFT( p_schroframe->format );
+ p_schroframe->components[i].h_shift =
+ SCHRO_FRAME_FORMAT_H_SHIFT( p_schroframe->format );
+ }
+ }
+
+ return p_schroframe;
+}
+
+/* Attempt to find dirac picture number in an encapsulation unit */
+static int ReadDiracPictureNumber( uint32_t *p_picnum, block_t *p_block )
+{
+ uint32_t u_pos = 4;
+ /* protect against falling off the edge */
+ while( u_pos + 13 < p_block->i_buffer )
+ {
+ /* find the picture startcode */
+ if( p_block->p_buffer[u_pos] & 0x08 )
+ {
+ *p_picnum = GetDWBE( p_block->p_buffer + u_pos + 9 );
+ return 1;
+ }
+ /* skip to the next dirac data unit */
+ uint32_t u_npo = GetDWBE( p_block->p_buffer + u_pos + 1 );
+ assert( u_npo <= UINT32_MAX - u_pos );
+ if( u_npo == 0 )
+ u_npo = 13;
+ u_pos += u_npo;
+ }
+ return 0;
+}
+
+
+static block_t *Encode( encoder_t *p_enc, picture_t *p_pic )
+{
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ block_t *p_block, *p_output_chain = NULL;
+ SchroFrame *p_frame;
+ bool b_go = true;
+
+ if( !p_pic ) {
+ if( !p_sys->started || p_sys->b_eos_pulled )
+ return NULL;
+
+ if( !p_sys->b_eos_signalled ) {
+ p_sys->b_eos_signalled = 1;
+ schro_encoder_end_of_stream( p_sys->p_schro );
+ }
+ } else {
+ /* we only know if the sequence is interlaced when the first
+ * picture arrives, so final setup is done here */
+ /* XXX todo, detect change of interlace */
+ p_sys->p_format->interlaced = !p_pic->b_progressive;
+ p_sys->p_format->top_field_first = p_pic->b_top_field_first;
+
+ if( p_sys->b_auto_field_coding )
+ schro_encoder_setting_set_double( p_sys->p_schro, "interlaced_coding", !p_pic->b_progressive );
+ }
+
+ if( !p_sys->started ) {
+ date_t date;
+
+ if( p_pic->format.i_chroma != p_enc->fmt_in.i_codec ) {
+ char chroma_in[5], chroma_out[5];
+ vlc_fourcc_to_char( p_pic->format.i_chroma, chroma_in );
+ chroma_in[4] = '\0';
+ chroma_out[4] = '\0';
+ vlc_fourcc_to_char( p_enc->fmt_in.i_codec, chroma_out );
+ msg_Warn( p_enc, "Resetting chroma from %s to %s", chroma_out, chroma_in );
+ if( !SetEncChromaFormat( p_enc, p_pic->format.i_chroma ) ) {
+ msg_Err( p_enc, "Could not reset chroma format to %s", chroma_in );
+ return NULL;
+ }
+ }
+
+ date_Init( &date, p_enc->fmt_in.video.i_frame_rate, p_enc->fmt_in.video.i_frame_rate_base );
+ /* FIXME - Unlike dirac-research codec Schro doesn't have a function that returns the delay in pics yet.
+ * Use a default of 1
+ */
+ date_Increment( &date, 1 );
+ p_sys->i_pts_offset = date_Get( &date );
+ if( schro_encoder_setting_get_double( p_sys->p_schro, "interlaced_coding" ) > 0.0 ) {
+ date_Set( &date, 0 );
+ date_Increment( &date, 1);
+ p_sys->i_field_time = date_Get( &date ) / 2;
+ }
+
+ schro_video_format_set_std_signal_range( p_sys->p_format, SCHRO_SIGNAL_RANGE_8BIT_VIDEO );
+ schro_encoder_set_video_format( p_sys->p_schro, p_sys->p_format );
+ schro_encoder_start( p_sys->p_schro );
+ p_sys->started = 1;
+ }
+
+ if( !p_sys->b_eos_signalled ) {
+ /* create a schro frame from the input pic and load */
+ /* Increase ref count by 1 so that the picture is not freed until
+ Schro finishes with it */
+ picture_Hold( p_pic );
+
+ p_frame = CreateSchroFrameFromInputPic( p_enc, p_pic );
+ if( !p_frame )
+ return NULL;
+ schro_encoder_push_frame( p_sys->p_schro, p_frame );
+
+
+ /* store pts in a lookaside buffer, so that the same pts may
+ * be used for the picture in coded order */
+ StorePicturePTS( p_enc, p_sys->i_input_picnum, p_pic->date );
+ p_sys->i_input_picnum++;
+
+ /* store dts in a queue, so that they appear in order in
+ * coded order */
+ p_block = block_New( p_enc, 1 );
+ if( !p_block )
+ return NULL;
+ p_block->i_dts = p_pic->date - p_sys->i_pts_offset;
+ block_FifoPut( p_sys->p_dts_fifo, p_block );
+ p_block = NULL;
+
+ /* for field coding mode, insert an extra value into both the
+ * pts lookaside buffer and dts queue, offset to correspond
+ * to a one field delay. */
+ if( schro_encoder_setting_get_double( p_sys->p_schro, "interlaced_coding" ) > 0.0 ) {
+ StorePicturePTS( p_enc, p_sys->i_input_picnum, p_pic->date + p_sys->i_field_time );
+ p_sys->i_input_picnum++;
+
+ p_block = block_New( p_enc, 1 );
+ if( !p_block )
+ return NULL;
+ p_block->i_dts = p_pic->date - p_sys->i_pts_offset + p_sys->i_field_time;
+ block_FifoPut( p_sys->p_dts_fifo, p_block );
+ p_block = NULL;
+ }
+ }
+
+ do
+ {
+ SchroStateEnum state;
+ state = schro_encoder_wait( p_sys->p_schro );
+ switch( state )
+ {
+ case SCHRO_STATE_NEED_FRAME:
+ b_go = false;
+ break;
+ case SCHRO_STATE_AGAIN:
+ break;
+ case SCHRO_STATE_END_OF_STREAM:
+ p_sys->b_eos_pulled = 1;
+ b_go = false;
+ break;
+ case SCHRO_STATE_HAVE_BUFFER:
+ {
+ SchroBuffer *p_enc_buf;
+ uint32_t u_pic_num;
+ int i_presentation_frame;
+ p_enc_buf = schro_encoder_pull( p_sys->p_schro, &i_presentation_frame );
+ p_block = block_New( p_enc, p_enc_buf->length );
+ if( !p_block )
+ return NULL;
+
+ memcpy( p_block->p_buffer, p_enc_buf->data, p_enc_buf->length );
+ schro_buffer_unref( p_enc_buf );
+
+ /* Presence of a Sequence header indicates a seek point */
+ if( 0 == p_block->p_buffer[4] )
+ {
+ p_block->i_flags |= BLOCK_FLAG_TYPE_I;
+
+ if( !p_enc->fmt_out.p_extra ) {
+ const uint8_t eos[] = { 'B','B','C','D',0x10,0,0,0,13,0,0,0,0 };
+ uint32_t len = GetDWBE( p_block->p_buffer + 5 );
+ /* if it hasn't been done so far, stash a copy of the
+ * sequence header for muxers such as ogg */
+ /* The OggDirac spec advises that a Dirac EOS DataUnit
+ * is appended to the sequence header to allow guard
+ * against poor streaming servers */
+ /* XXX, should this be done using the packetizer ? */
+ p_enc->fmt_out.p_extra = malloc( len + sizeof( eos ) );
+ if( !p_enc->fmt_out.p_extra )
+ return NULL;
+ memcpy( p_enc->fmt_out.p_extra, p_block->p_buffer, len );
+ memcpy( (uint8_t*)p_enc->fmt_out.p_extra + len, eos, sizeof( eos ) );
+ SetDWBE( (uint8_t*)p_enc->fmt_out.p_extra + len + 10, len );
+ p_enc->fmt_out.i_extra = len + sizeof( eos );
+ }
+ }
+
+ if( ReadDiracPictureNumber( &u_pic_num, p_block ) ) {
+ block_t *p_dts_block = block_FifoGet( p_sys->p_dts_fifo );
+ p_block->i_dts = p_dts_block->i_dts;
+ p_block->i_pts = GetPicturePTS( p_enc, u_pic_num );
+ block_Release( p_dts_block );
+ block_ChainAppend( &p_output_chain, p_block );
+ } else {
+ /* End of sequence */
+ block_ChainAppend( &p_output_chain, p_block );
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ } while( b_go );
+
+ return p_output_chain;
+}
+
+/*****************************************************************************
+ * CloseEncoder: Schro encoder destruction
+ *****************************************************************************/
+static void CloseEncoder( vlc_object_t *p_this )
+{
+ encoder_t *p_enc = (encoder_t *)p_this;
+ encoder_sys_t *p_sys = p_enc->p_sys;
+
+ /* Free the encoder resources */
+ if( p_sys->p_schro )
+ schro_encoder_free( p_sys->p_schro );
+
+ free( p_sys->p_format );
+
+ if( p_sys->p_dts_fifo )
+ block_FifoRelease( p_sys->p_dts_fifo );
+
+ block_ChainRelease( p_sys->p_chain );
+
+ free( p_sys );
+}
+
projects / vlc / blobdiff