This is sample code for reference HW support for decode+scaling in a single HW command (VDBOX+SFC). The primary target usage is video analytics, but can be used playback, transcoding, etc.
For VAAPI - https://github.com/intel/libva basically, it allows multiple outputs (in different resolutions) using the decode context in a single call (you can search for “additional_outputs” in va.h). VAAPI sample code - https://github.com/intel/libva-utils/commit/957a269f02b00760b7e807643c821ee26abc529b --- fftools/ffmpeg_opt.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index 53d688b764..bfb0f882b5 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -111,6 +111,10 @@ int filter_nbthreads = 0; int filter_complex_nbthreads = 0; int vstats_version = 2; +int sfc_flags = 0; +int sfc_width = 0; +int sfc_height = 0; +char *sfc_format; static int intra_only = 0; static int file_overwrite = 0; @@ -1100,6 +1104,13 @@ static int open_input_file(OptionsContext *o, const char *filename) av_dict_set(&o->g->format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE); scan_all_pmts_set = 1; } + + //sfc opt + av_dict_set_int(&o->g->codec_opts, "sfc_flags", sfc_flags, AV_DICT_DONT_OVERWRITE); + av_dict_set_int(&o->g->codec_opts, "sfc_width", sfc_width, AV_DICT_DONT_OVERWRITE); + av_dict_set_int(&o->g->codec_opts, "sfc_height", sfc_height, AV_DICT_DONT_OVERWRITE); + av_dict_set(&o->g->codec_opts, "sfc_format", sfc_format, AV_DICT_DONT_OVERWRITE); + /* open the input file with generic avformat function */ err = avformat_open_input(&ic, filename, file_iformat, &o->g->format_opts); if (err < 0) { @@ -2898,6 +2909,13 @@ static int opt_vstats_file(void *optctx, const char *opt, const char *arg) return 0; } +static int opt_sfc_format(void *optctx, const char *opt, const char *arg) +{ + av_free (sfc_format); + sfc_format = av_strdup (arg); + return 0; +} + static int opt_vstats(void *optctx, const char *opt, const char *arg) { char filename[40]; @@ -3746,5 +3764,15 @@ const OptionDef options[] = { { "filter_hw_device", HAS_ARG | OPT_EXPERT, { .func_arg = opt_filter_hw_device }, "set hardware device used when filtering", "device" }, + //sfc opt + { "sfc_flags", OPT_VIDEO | HAS_ARG | OPT_INT | OPT_INPUT, { &sfc_flags }, + "set sfc flags", "sfc" }, + { "sfc_width", OPT_VIDEO | HAS_ARG | OPT_INT | OPT_INPUT, { &sfc_width }, + "set sfc width", "sfc" }, + { "sfc_height", OPT_VIDEO | HAS_ARG | OPT_INT | OPT_INPUT, { &sfc_height }, + "set sfc height", "sfc" }, + { "sfc_format", OPT_VIDEO | HAS_ARG | OPT_EXPERT , { .func_arg = opt_sfc_format }, + "set sfc format", "sfc" }, + { NULL, }, }; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
