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_read_header(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx;
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)
return AVERROR(ENOMEM);
ctx->list_devices = cctx->list_devices;
ctx->list_formats = cctx->list_formats;
ctx->teletext_lines = cctx->teletext_lines;
ctx->preroll = cctx->preroll;
ctx->duplex_mode = cctx->duplex_mode;
if (cctx->video_input > 0 && (unsigned int)cctx->video_input < FF_ARRAY_ELEMS(decklink_video_connection_map))
ctx->video_input = decklink_video_connection_map[cctx->video_input];
if (cctx->audio_input > 0 && (unsigned int)cctx->audio_input < FF_ARRAY_ELEMS(decklink_audio_connection_map))
ctx->audio_input = decklink_audio_connection_map[cctx->audio_input];
ctx->audio_pts_source = cctx->audio_pts_source;
ctx->video_pts_source = cctx->video_pts_source;
ctx->draw_bars = cctx->draw_bars;
cctx->ctx = ctx;
#if !CONFIG_LIBZVBI
if (ctx->teletext_lines) {
av_log(avctx, AV_LOG_ERROR, "Libzvbi support is needed for capturing teletext, please recompile FFmpeg.\n");
return AVERROR(ENOSYS);
}
#endif
/* Check audio channel option for valid values: 2, 8 or 16 */
switch (cctx->audio_channels) {
case 2:
case 8:
case 16:
break;
default:
av_log(avctx, AV_LOG_ERROR, "Value of channels option must be one of 2, 8 or 16\n");
return AVERROR(EINVAL);
}
/* 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;
}
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) {
av_log(avctx, AV_LOG_ERROR, "Could not open input device from '%s'\n",
avctx->filename);
ret = AVERROR(EIO);
goto error;
}
/* List supported formats. */
if (ctx->list_formats) {
ff_decklink_list_formats(avctx, DIRECTION_IN);
ret = AVERROR_EXIT;
goto error;
}
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);
ret = AVERROR(EIO);
goto error;
}
}
/* Setup streams. */
st = avformat_new_stream(avctx, NULL);
if (!st) {
av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");
ret = AVERROR(ENOMEM);
goto error;
}
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE;
st->codecpar->sample_rate = bmdAudioSampleRate48kHz;
st->codecpar->channels = cctx->audio_channels;
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");
ret = AVERROR(ENOMEM);
goto error;
}
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
st->codecpar->width = ctx->bmd_width;
st->codecpar->height = ctx->bmd_height;
st->time_base.den = ctx->bmd_tb_den;
st->time_base.num = ctx->bmd_tb_num;
av_stream_set_r_frame_rate(st, av_make_q(st->time_base.den, st->time_base.num));
if (cctx->v210) {
st->codecpar->codec_id = AV_CODEC_ID_V210;
st->codecpar->codec_tag = MKTAG('V', '2', '1', '0');
st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 64, st->time_base.den, st->time_base.num * 3);
} else {
st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
st->codecpar->format = AV_PIX_FMT_UYVY422;
st->codecpar->codec_tag = MKTAG('U', 'Y', 'V', 'Y');
st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 16, st->time_base.den, st->time_base.num);
}
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
ctx->video_st=st;
if (ctx->teletext_lines) {
st = avformat_new_stream(avctx, NULL);
if (!st) {
av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");
ret = AVERROR(ENOMEM);
goto error;
}
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
st->time_base.den = ctx->bmd_tb_den;
st->time_base.num = ctx->bmd_tb_num;
st->codecpar->codec_id = AV_CODEC_ID_DVB_TELETEXT;
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
ctx->teletext_st = st;
}
av_log(avctx, AV_LOG_VERBOSE, "Using %d input audio channels\n", ctx->audio_st->codecpar->channels);
result = ctx->dli->EnableAudioInput(bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, ctx->audio_st->codecpar->channels);
if (result != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Cannot enable audio input\n");
ret = AVERROR(EIO);
goto error;
}
result = ctx->dli->EnableVideoInput(ctx->bmd_mode,
cctx->v210 ? bmdFormat10BitYUV : bmdFormat8BitYUV,
bmdVideoInputFlagDefault);
if (result != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Cannot enable video input\n");
ret = AVERROR(EIO);
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");
ret = AVERROR(EIO);
goto error;
}
return 0;
error:
ff_decklink_cleanup(avctx);
return ret;
}