int av_opt_set(void *obj, const char *name, const char *val, int search_flags) { int ret = 0; void *dst, *target_obj; const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj); if (!o || !target_obj) return AVERROR_OPTION_NOT_FOUND; if (!val && (o->type != AV_OPT_TYPE_STRING && o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT && o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE && o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR && o->type != AV_OPT_TYPE_CHANNEL_LAYOUT && o->type != AV_OPT_TYPE_BOOL)) return AVERROR(EINVAL); if (o->flags & AV_OPT_FLAG_READONLY) return AVERROR(EINVAL); dst = ((uint8_t *)target_obj) + o->offset; switch (o->type) { case AV_OPT_TYPE_BOOL: return set_string_bool(obj, o, val, dst); case AV_OPT_TYPE_STRING: return set_string(obj, o, val, dst); case AV_OPT_TYPE_BINARY: return set_string_binary(obj, o, val, dst); case AV_OPT_TYPE_FLAGS: case AV_OPT_TYPE_INT: case AV_OPT_TYPE_INT64: case AV_OPT_TYPE_FLOAT: case AV_OPT_TYPE_DOUBLE: case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, target_obj, o, val, dst); case AV_OPT_TYPE_IMAGE_SIZE: return set_string_image_size(obj, o, val, dst); case AV_OPT_TYPE_VIDEO_RATE: return set_string_video_rate(obj, o, val, dst); case AV_OPT_TYPE_PIXEL_FMT: return set_string_pixel_fmt(obj, o, val, dst); case AV_OPT_TYPE_SAMPLE_FMT: return set_string_sample_fmt(obj, o, val, dst); case AV_OPT_TYPE_DURATION: if (!val) { *(int64_t *)dst = 0; return 0; } else { if ((ret = av_parse_time(dst, val, 1)) < 0) av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val); return ret; } break; case AV_OPT_TYPE_COLOR: return set_string_color(obj, o, val, dst); case AV_OPT_TYPE_CHANNEL_LAYOUT: if (!val || !strcmp(val, "none")) { *(int64_t *)dst = 0; } else { int64_t cl = av_get_channel_layout(val); if (!cl) { av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val); ret = AVERROR(EINVAL); } *(int64_t *)dst = cl; return ret; } break; } av_log(obj, AV_LOG_ERROR, "Invalid option type.\n"); return AVERROR(EINVAL); }
int av_opt_set(void *obj, const char *name, const char *val, int search_flags) { int ret = 0; void *dst, *target_obj; const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj); if (!o || !target_obj) return AVERROR_OPTION_NOT_FOUND; if (!val && (o->type != AV_OPT_TYPE_STRING && o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT && o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE && o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR && o->type != AV_OPT_TYPE_CHANNEL_LAYOUT && o->type != AV_OPT_TYPE_BOOL)) return AVERROR(EINVAL); if (o->flags & AV_OPT_FLAG_READONLY) return AVERROR(EINVAL); dst = ((uint8_t *)target_obj) + o->offset; switch (o->type) { case AV_OPT_TYPE_BOOL: return set_string_bool(obj, o, val, dst); case AV_OPT_TYPE_STRING: return set_string(obj, o, val, dst); case AV_OPT_TYPE_BINARY: return set_string_binary(obj, o, val, dst); case AV_OPT_TYPE_FLAGS: case AV_OPT_TYPE_INT: case AV_OPT_TYPE_INT64: case AV_OPT_TYPE_FLOAT: case AV_OPT_TYPE_DOUBLE: case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, target_obj, o, val, dst); case AV_OPT_TYPE_IMAGE_SIZE: return set_string_image_size(obj, o, val, dst); case AV_OPT_TYPE_VIDEO_RATE: return set_string_video_rate(obj, o, val, dst); case AV_OPT_TYPE_PIXEL_FMT: return set_string_pixel_fmt(obj, o, val, dst); case AV_OPT_TYPE_SAMPLE_FMT: return set_string_sample_fmt(obj, o, val, dst); case AV_OPT_TYPE_DURATION: if (!val) { *(int64_t *)dst = 0; return 0; } else { if ((ret = av_parse_time(dst, val, 1)) < 0) av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val); return ret; } break; case AV_OPT_TYPE_COLOR: return set_string_color(obj, o, val, dst); case AV_OPT_TYPE_CHANNEL_LAYOUT: if (!val || !strcmp(val, "none")) { *(int64_t *)dst = 0; } else { int64_t cl = av_get_channel_layout(val); if (!cl) { av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val); ret = AVERROR(EINVAL); } *(int64_t *)dst = cl; return ret; } break; } av_log(obj, AV_LOG_ERROR, "Invalid option type.\n"); return AVERROR(EINVAL); }