int ff_decklink_list_devices(AVFormatContext *avctx)
{
IDeckLink *dl = NULL;
IDeckLinkIterator *iter = CreateDeckLinkIteratorInstance();
if (!iter) {
av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");
return AVERROR(EIO);
}
av_log(avctx, AV_LOG_INFO, "Blackmagic DeckLink devices:\n");
while (iter->Next(&dl) == S_OK) {
const char *displayName;
ff_decklink_get_display_name(dl, &displayName);
av_log(avctx, AV_LOG_INFO, "\t'%s'\n", displayName);
av_free((void *) displayName);
dl->Release();
}
iter->Release();
return 0;
}
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);
if (ctx->dl->QueryInterface(IID_IDeckLinkConfiguration, (void **)&ctx->cfg) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get configuration interface for '%s'\n", name);
ff_decklink_cleanup(avctx);
return AVERROR_EXTERNAL;
}
if (ctx->dl->QueryInterface(IID_IDeckLinkAttributes, (void **)&ctx->attr) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get attributes interface for '%s'\n", name);
ff_decklink_cleanup(avctx);
return AVERROR_EXTERNAL;
}
return 0;
}
av_cold int ff_decklink_read_header(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
struct decklink_ctx *ctx;
IDeckLinkDisplayModeIterator *itermode;
IDeckLinkIterator *iter;
IDeckLink *dl = NULL;
AVStream *st;
HRESULT result;
char fname[1024];
char *tmp;
int mode_num = 0;
ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));
if (!ctx)
return AVERROR(ENOMEM);
ctx->list_devices = cctx->list_devices;
ctx->list_formats = cctx->list_formats;
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;
}
strcpy (fname, avctx->filename);
tmp=strchr (fname, '@');
if (tmp != NULL) {
mode_num = atoi (tmp+1);
*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);
}
/* Get input device. */
if (ctx->dl->QueryInterface(IID_IDeckLinkInput, (void **) &ctx->dli) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n",
avctx->filename);
ctx->dl->Release();
return AVERROR(EIO);
}
/* List supported formats. */
if (ctx->list_formats) {
ff_decklink_list_formats(avctx, DIRECTION_IN);
ctx->dli->Release();
ctx->dl->Release();
return AVERROR_EXIT;
}
if (ctx->dli->GetDisplayModeIterator(&itermode) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
ctx->dl->Release();
return AVERROR(EIO);
}
if (mode_num > 0) {
if (ff_decklink_set_format(avctx, DIRECTION_IN, mode_num) < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not set mode %d for %s\n", mode_num, fname);
goto error;
}
}
itermode->Release();
/* Setup streams. */
st = avformat_new_stream(avctx, NULL);
if (!st) {
av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");
goto error;
}
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
st->codec->sample_rate = bmdAudioSampleRate48kHz;
st->codec->channels = 2;
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
ctx->audio_st=st;
st = avformat_new_stream(avctx, NULL);
if (!st) {
av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");
goto error;
}
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
st->codec->width = ctx->bmd_width;
st->codec->height = ctx->bmd_height;
st->codec->pix_fmt = AV_PIX_FMT_UYVY422;
st->codec->time_base.den = ctx->bmd_tb_den;
st->codec->time_base.num = ctx->bmd_tb_num;
st->codec->bit_rate = avpicture_get_size(st->codec->pix_fmt, ctx->bmd_width, ctx->bmd_height) * 1/av_q2d(st->codec->time_base) * 8;
st->codec->codec_tag = MKTAG('U', 'Y', 'V', 'Y');
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
ctx->video_st=st;
result = ctx->dli->EnableAudioInput(bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, 2);
if (result != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Cannot enable audio input\n");
goto error;
}
result = ctx->dli->EnableVideoInput(ctx->bmd_mode, bmdFormat8BitYUV, bmdVideoInputFlagDefault);
if (result != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Cannot enable video input\n");
goto error;
}
avpacket_queue_init (avctx, &ctx->queue);
if (decklink_start_input (avctx) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Cannot start input stream\n");
goto error;
}
return 0;
error:
ctx->dli->Release();
ctx->dl->Release();
return AVERROR(EIO);
}
av_cold int ff_decklink_write_header(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
struct decklink_ctx *ctx;
IDeckLinkDisplayModeIterator *itermode;
IDeckLinkIterator *iter;
IDeckLink *dl = NULL;
unsigned int n;
ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));
if (!ctx)
return AVERROR(ENOMEM);
ctx->list_devices = cctx->list_devices;
ctx->list_formats = cctx->list_formats;
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);
}
/* Get output device. */
if (ctx->dl->QueryInterface(IID_IDeckLinkOutput, (void **) &ctx->dlo) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n",
avctx->filename);
ctx->dl->Release();
return AVERROR(EIO);
}
/* List supported formats. */
if (ctx->list_formats) {
ff_decklink_list_formats(avctx);
ctx->dlo->Release();
ctx->dl->Release();
return AVERROR_EXIT;
}
if (ctx->dlo->GetDisplayModeIterator(&itermode) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
ctx->dl->Release();
return AVERROR(EIO);
}
/* Setup streams. */
for (n = 0; n < avctx->nb_streams; n++) {
AVStream *st = avctx->streams[n];
AVCodecContext *c = st->codec;
if (c->codec_type == AVMEDIA_TYPE_AUDIO) {
if (decklink_setup_audio(avctx, st))
goto error;
} else if (c->codec_type == AVMEDIA_TYPE_VIDEO) {
if (decklink_setup_video(avctx, st))
goto error;
} else {
av_log(avctx, AV_LOG_ERROR, "Unsupported stream type.\n");
goto error;
}
}
itermode->Release();
return 0;
error:
ctx->dlo->Release();
ctx->dl->Release();
return AVERROR(EIO);
}
int ff_decklink_list_devices(AVFormatContext *avctx,
struct AVDeviceInfoList *device_list,
int show_inputs, int show_outputs)
{
IDeckLink *dl = NULL;
IDeckLinkIterator *iter = decklink_create_iterator(avctx);
int ret = 0;
if (!iter)
return AVERROR(EIO);
while (ret == 0 && iter->Next(&dl) == S_OK) {
IDeckLinkOutput *output_config;
IDeckLinkInput *input_config;
const char *displayName;
AVDeviceInfo *new_device = NULL;
int add = 0;
ff_decklink_get_display_name(dl, &displayName);
if (show_outputs) {
if (dl->QueryInterface(IID_IDeckLinkOutput, (void **)&output_config) == S_OK) {
output_config->Release();
add = 1;
}
}
if (show_inputs) {
if (dl->QueryInterface(IID_IDeckLinkInput, (void **)&input_config) == S_OK) {
input_config->Release();
add = 1;
}
}
if (add == 1) {
new_device = (AVDeviceInfo *) av_mallocz(sizeof(AVDeviceInfo));
if (!new_device) {
ret = AVERROR(ENOMEM);
goto next;
}
new_device->device_name = av_strdup(displayName);
new_device->device_description = av_strdup(displayName);
if (!new_device->device_name ||
!new_device->device_description ||
av_dynarray_add_nofree(&device_list->devices, &device_list->nb_devices, new_device) < 0) {
ret = AVERROR(ENOMEM);
av_freep(&new_device->device_name);
av_freep(&new_device->device_description);
av_freep(&new_device);
goto next;
}
}
next:
av_freep(&displayName);
dl->Release();
}
iter->Release();
return ret;
}
