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  • Committer: Henrik Gramner
  • Author(s): Emanuele Ruffaldi
  • Date: 2018-08-06 21:24:12 UTC
  • Revision ID: git-v1:698c5a32e63a3ed6b976ed196abe479efd78530b
4:0:0 (monochrome) encoding support

Virtually zero increase in compression efficiency compared to 4:2:0 with empty
chroma planes. Performance is better though, especially with fast settings.

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input/y4m.c
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static int parse_csp_and_depth( char *csp_name, int *bit_depth )
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{
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    int csp    = X264_CSP_MAX;
 
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    int csp = X264_CSP_MAX;
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    /* Set colorspace from known variants */
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    if( !strncmp( "420", csp_name, 3 ) )
 
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    if( !strncmp( "mono", csp_name, 4 ) )
 
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        csp = X264_CSP_I400;
 
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    else if( !strncmp( "420", csp_name, 3 ) )
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        csp = X264_CSP_I420;
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    else if( !strncmp( "422", csp_name, 3 ) )
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        csp = X264_CSP_I422;
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        csp = X264_CSP_I444;
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    /* Set high bit depth from known extensions */
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    if( sscanf( csp_name, "%*d%*[pP]%d", bit_depth ) != 1 )
 
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    if( sscanf( csp_name, "mono%d", bit_depth ) != 1 &&
 
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        sscanf( csp_name, "%*d%*[pP]%d", bit_depth ) != 1 )
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        *bit_depth = 8;
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    return csp;