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77 lines
2.5 KiB
77 lines
2.5 KiB
/* |
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* LGPL |
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*/ |
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/* |
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* typical parsed command line: |
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* msmpeg4:bitrate=720000:qmax=16 |
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* |
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*/ |
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#include "avcodec.h" |
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/* |
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* possible extension - use for decoder options |
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* - for given codec names filter only correct |
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* options given (could be passed with 'str') |
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*/ |
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/** |
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* \param avctx where to store parsed results |
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* \param str string with options for parsing |
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* \param config allocated avc_config_t for external parsing |
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* i.e. external program might learn about all available |
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* options for given codec |
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**/ |
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void avcodec_getopt(AVCodecContext* avctx, char* str, avc_config_t** config) |
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{ |
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AVCodecContext avctx_tmp; |
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AVCodecContext* ctx = (avctx) ? avctx : &avctx_tmp; |
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static const char* class_h263 = ",msmpeg4,"; |
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//"huffyuv,wmv1,msmpeg4v2,msmpeg4,mpeg4,mpeg1,mpeg1video,mjpeg,rv10,h263,h263p" |
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avc_config_t cnf[] = |
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{ |
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// FIXME: sorted by importance!!! |
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// expert option should follow more common ones |
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{ |
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"bitrate", "desired video bitrate", |
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FF_CONF_TYPE_INT, &ctx->bit_rate, 4, 240000000, 800000, NULL, class_h263 |
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}, { |
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"vhq", "very high quality", |
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FF_CONF_TYPE_FLAG, &ctx->flags, 0, CODEC_FLAG_HQ, 0, NULL, class_h263 |
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}, { |
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"ratetol", "number of bits the bitstream is allowed to diverge from the reference" |
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"the reference can be CBR (for CBR pass1) or VBR (for pass2)", |
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FF_CONF_TYPE_INT, &ctx->bit_rate_tolerance, 4, 240000000, 8000, NULL, class_h263 |
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}, { |
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"qmin", "minimum quantizer", FF_CONF_TYPE_INT, &ctx->qmin, 1, 31, 2, NULL, class_h263 |
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}, { |
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"qmax", "maximum qunatizer", FF_CONF_TYPE_INT, &ctx->qmax, 1, 31, 31, NULL, class_h263 |
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}, { |
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"rc_eq", "rate control equation", |
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FF_CONF_TYPE_STRING, &ctx->rc_eq, 0, 0, 0, "tex^qComp" /* FILLME options */, class_h263 |
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}, { |
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"rc_minrate", "rate control minimum bitrate", |
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FF_CONF_TYPE_INT, &ctx->rc_min_rate, 4, 24000000, 0, NULL, class_h263 |
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}, { |
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"rc_maxrate", "rate control maximum bitrate", |
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FF_CONF_TYPE_INT, &ctx->rc_max_rate, 4, 24000000, 0, NULL, class_h263 |
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}, { |
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"psnr", "calculate PSNR of compressed frames", |
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FF_CONF_TYPE_FLAG, &ctx->flags, 0, CODEC_FLAG_PSNR, 0, NULL, class_h263 |
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}, { |
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"rc_override", "ratecontrol override (=startframe,endframe,qscale,quality_factor)", |
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FF_CONF_TYPE_RCOVERIDE, &ctx->rc_override, 0, 0, 0, NULL, class_h263 |
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}, |
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{ NULL, NULL, 0, NULL, 0, 0, 0, NULL, NULL } |
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}; |
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if (config) |
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{ |
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*config = malloc(sizeof(cnf)); |
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if (*config) |
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memcpy(*config, cnf, sizeof(cnf)); |
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} |
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}
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