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avdevice/decklink: factorize device finder function

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Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint
2016-06-18 16:55:47 +02:00
parent 4ce0a77ec8
commit 38d75fe906
4 changed files with 38 additions and 50 deletions
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29
libavdevice/decklink_enc.cpp
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@ -312,9 +312,8 @@ av_cold int ff_decklink_write_header(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
struct decklink_ctx *ctx;
IDeckLinkIterator *iter;
IDeckLink *dl = NULL;
unsigned int n;
int ret;
ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));
if (!ctx)
@ -324,35 +323,15 @@ av_cold int ff_decklink_write_header(AVFormatContext *avctx)
ctx->preroll = cctx->preroll;
cctx->ctx = ctx;
iter = CreateDeckLinkIteratorInstance();
if (!iter) {
av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");
return AVERROR(EIO);
}
/* List available devices. */
if (ctx->list_devices) {
ff_decklink_list_devices(avctx);
return AVERROR_EXIT;
}
/* Open device. */
while (iter->Next(&dl) == S_OK) {
const char *displayName;
ff_decklink_get_display_name(dl, &displayName);
if (!strcmp(avctx->filename, displayName)) {
av_free((void *) displayName);
ctx->dl = dl;
break;
}
av_free((void *) displayName);
dl->Release();
}
iter->Release();
if (!ctx->dl) {
av_log(avctx, AV_LOG_ERROR, "Could not open '%s'\n", avctx->filename);
return AVERROR(EIO);
}
ret = ff_decklink_init_device(avctx, avctx->filename);
if (ret < 0)
return ret;
/* Get output device. */
if (ctx->dl->QueryInterface(IID_IDeckLinkOutput, (void **) &ctx->dlo) != S_OK) {