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