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Code Issues Releases Activity

avdevice/decklink: factorize device finder function

Browse Source 
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_common.cpp
View File

@ -252,3 +252,32 @@ void ff_decklink_cleanup(AVFormatContext *avctx)
if (ctx->dl)
ctx->dl->Release();
}
int ff_decklink_init_device(AVFormatContext *avctx, const char* name)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
IDeckLink *dl = NULL;
IDeckLinkIterator *iter = CreateDeckLinkIteratorInstance();
if (!iter) {
av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");
return AVERROR_EXTERNAL;
}
while (iter->Next(&dl) == S_OK) {
const char *displayName;
ff_decklink_get_display_name(dl, &displayName);
if (!strcmp(name, displayName)) {
av_free((void *)displayName);
ctx->dl = dl;
break;
}
av_free((void *)displayName);
dl->Release();
}
iter->Release();
if (!ctx->dl)
return AVERROR(ENXIO);
return 0;
}

1
libavdevice/decklink_common.h
View File

@ -106,5 +106,6 @@ int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t directio
int ff_decklink_list_devices(AVFormatContext *avctx);
int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction = DIRECTION_OUT);
void ff_decklink_cleanup(AVFormatContext *avctx);
int ff_decklink_init_device(AVFormatContext *avctx, const char* name);
#endif /* AVDEVICE_DECKLINK_COMMON_H */

29
libavdevice/decklink_dec.cpp
View File

@ -431,13 +431,12 @@ av_cold int ff_decklink_read_header(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
struct decklink_ctx *ctx;
IDeckLinkIterator *iter;
IDeckLink *dl = NULL;
AVStream *st;
HRESULT result;
char fname[1024];
char *tmp;
int mode_num = 0;
int ret;
ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));
if (!ctx)
@ -466,12 +465,6 @@ av_cold int ff_decklink_read_header(AVFormatContext *avctx)
return AVERROR(EINVAL);
}
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);
@ -485,23 +478,9 @@ av_cold int ff_decklink_read_header(AVFormatContext *avctx)
*tmp = 0;
}
/* Open device. */
while (iter->Next(&dl) == S_OK) {
const char *displayName;
ff_decklink_get_display_name(dl, &displayName);
if (!strcmp(fname, 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", fname);
return AVERROR(EIO);
}
ret = ff_decklink_init_device(avctx, fname);
if (ret < 0)
return ret;
/* Get input device. */
if (ctx->dl->QueryInterface(IID_IDeckLinkInput, (void **) &ctx->dli) != S_OK) {

29
libavdevice/decklink_enc.cpp
View File

@ -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) {