/**
* Cycle through available formats using the specified pin,
* try to set parameters specified through AVOptions and if successful
* return 1 in *pformat_set.
* If pformat_set is NULL, list all pin capabilities.
*/
static void
dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype,
IPin *pin, int *pformat_set)
{
struct dshow_ctx *ctx = avctx->priv_data;
IAMStreamConfig *config = NULL;
AM_MEDIA_TYPE *type = NULL;
int format_set = 0;
void *caps = NULL;
int i, n, size, r;
if (IPin_QueryInterface(pin, &IID_IAMStreamConfig, (void **) &config) != S_OK)
return;
if (IAMStreamConfig_GetNumberOfCapabilities(config, &n, &size) != S_OK)
goto end;
caps = av_malloc(size);
if (!caps)
goto end;
for (i = 0; i < n && !format_set; i++) {
r = IAMStreamConfig_GetStreamCaps(config, i, &type, (void *) caps);
if (r != S_OK)
goto next;
#if DSHOWDEBUG
ff_print_AM_MEDIA_TYPE(type);
#endif
if (devtype == VideoDevice) {
VIDEO_STREAM_CONFIG_CAPS *vcaps = caps;
BITMAPINFOHEADER *bih;
int64_t *fr;
const AVCodecTag *const tags[] = { avformat_get_riff_video_tags(), NULL };
#if DSHOWDEBUG
ff_print_VIDEO_STREAM_CONFIG_CAPS(vcaps);
#endif
if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo)) {
VIDEOINFOHEADER *v = (void *) type->pbFormat;
fr = &v->AvgTimePerFrame;
bih = &v->bmiHeader;
} else if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo2)) {
VIDEOINFOHEADER2 *v = (void *) type->pbFormat;
fr = &v->AvgTimePerFrame;
bih = &v->bmiHeader;
} else {
goto next;
}
if (!pformat_set) {
enum AVPixelFormat pix_fmt = dshow_pixfmt(bih->biCompression, bih->biBitCount);
if (pix_fmt == AV_PIX_FMT_NONE) {
enum AVCodecID codec_id = av_codec_get_id(tags, bih->biCompression);
AVCodec *codec = avcodec_find_decoder(codec_id);
if (codec_id == AV_CODEC_ID_NONE || !codec) {
av_log(avctx, AV_LOG_INFO, " unknown compression type 0x%X", (int) bih->biCompression);
} else {
av_log(avctx, AV_LOG_INFO, " vcodec=%s", codec->name);
}
} else {
av_log(avctx, AV_LOG_INFO, " pixel_format=%s", av_get_pix_fmt_name(pix_fmt));
}
av_log(avctx, AV_LOG_INFO, " min s=%ldx%ld fps=%g max s=%ldx%ld fps=%g\n",
vcaps->MinOutputSize.cx, vcaps->MinOutputSize.cy,
1e7 / vcaps->MaxFrameInterval,
vcaps->MaxOutputSize.cx, vcaps->MaxOutputSize.cy,
1e7 / vcaps->MinFrameInterval);
continue;
}
if (ctx->video_codec_id != AV_CODEC_ID_RAWVIDEO) {
if (ctx->video_codec_id != av_codec_get_id(tags, bih->biCompression))
goto next;
}
if (ctx->pixel_format != AV_PIX_FMT_NONE &&
ctx->pixel_format != dshow_pixfmt(bih->biCompression, bih->biBitCount)) {
goto next;
}
if (ctx->framerate) {
int64_t framerate = ((int64_t) ctx->requested_framerate.den*10000000)
/ ctx->requested_framerate.num;
if (framerate > vcaps->MaxFrameInterval ||
framerate < vcaps->MinFrameInterval)
goto next;
*fr = framerate;
}
if (ctx->requested_width && ctx->requested_height) {
if (ctx->requested_width > vcaps->MaxOutputSize.cx ||
ctx->requested_width < vcaps->MinOutputSize.cx ||
ctx->requested_height > vcaps->MaxOutputSize.cy ||
ctx->requested_height < vcaps->MinOutputSize.cy)
goto next;
bih->biWidth = ctx->requested_width;
bih->biHeight = ctx->requested_height;
}
} else {
AUDIO_STREAM_CONFIG_CAPS *acaps = caps;
WAVEFORMATEX *fx;
#if DSHOWDEBUG
ff_print_AUDIO_STREAM_CONFIG_CAPS(acaps);
#endif
if (IsEqualGUID(&type->formattype, &FORMAT_WaveFormatEx)) {
fx = (void *) type->pbFormat;
} else {
goto next;
}
if (!pformat_set) {
av_log(avctx, AV_LOG_INFO, " min ch=%lu bits=%lu rate=%6lu max ch=%lu bits=%lu rate=%6lu\n",
acaps->MinimumChannels, acaps->MinimumBitsPerSample, acaps->MinimumSampleFrequency,
acaps->MaximumChannels, acaps->MaximumBitsPerSample, acaps->MaximumSampleFrequency);
continue;
}
if (ctx->sample_rate) {
if (ctx->sample_rate > acaps->MaximumSampleFrequency ||
ctx->sample_rate < acaps->MinimumSampleFrequency)
goto next;
fx->nSamplesPerSec = ctx->sample_rate;
}
if (ctx->sample_size) {
if (ctx->sample_size > acaps->MaximumBitsPerSample ||
ctx->sample_size < acaps->MinimumBitsPerSample)
goto next;
fx->wBitsPerSample = ctx->sample_size;
}
if (ctx->channels) {
if (ctx->channels > acaps->MaximumChannels ||
ctx->channels < acaps->MinimumChannels)
goto next;
fx->nChannels = ctx->channels;
}
}
if (IAMStreamConfig_SetFormat(config, type) != S_OK)
goto next;
format_set = 1;
next:
if (type->pbFormat)
CoTaskMemFree(type->pbFormat);
CoTaskMemFree(type);
}
end:
IAMStreamConfig_Release(config);
av_free(caps);
if (pformat_set)
*pformat_set = format_set;
}
/**
* Cycle through available formats using the specified pin,
* try to set parameters specified through AVOptions and if successful
* return 1 in *pformat_set.
* If pformat_set is NULL, list all pin capabilities.
*/
static void
dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype,
IPin *pin, int *pformat_set)
{
struct dshow_ctx *ctx = avctx->priv_data;
IAMStreamConfig *config = NULL;
AM_MEDIA_TYPE *type = NULL;
int format_set = 0;
void *caps = NULL;
int i, n, size;
if (IPin_QueryInterface(pin, &IID_IAMStreamConfig, (void **) &config) != S_OK)
return;
if (IAMStreamConfig_GetNumberOfCapabilities(config, &n, &size) != S_OK)
goto end;
caps = av_malloc(size);
if (!caps)
goto end;
for (i = 0; i < n && !format_set; i++) {
IAMStreamConfig_GetStreamCaps(config, i, &type, (void *) caps);
#if DSHOWDEBUG
ff_print_AM_MEDIA_TYPE(type);
#endif
if (devtype == VideoDevice) {
VIDEO_STREAM_CONFIG_CAPS *vcaps = caps;
BITMAPINFOHEADER *bih;
int64_t *fr;
#if DSHOWDEBUG
ff_print_VIDEO_STREAM_CONFIG_CAPS(vcaps);
#endif
if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo)) {
VIDEOINFOHEADER *v = (void *) type->pbFormat;
fr = &v->AvgTimePerFrame;
bih = &v->bmiHeader;
} else if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo2)) {
VIDEOINFOHEADER2 *v = (void *) type->pbFormat;
fr = &v->AvgTimePerFrame;
bih = &v->bmiHeader;
} else {
goto next;
}
if (!pformat_set) {
av_log(avctx, AV_LOG_INFO, " min s=%ldx%ld fps=%g max s=%ldx%ld fps=%g\n",
vcaps->MinOutputSize.cx, vcaps->MinOutputSize.cy,
1e7 / vcaps->MaxFrameInterval,
vcaps->MaxOutputSize.cx, vcaps->MaxOutputSize.cy,
1e7 / vcaps->MinFrameInterval);
continue;
}
if (ctx->framerate) {
int64_t framerate = ((int64_t) ctx->requested_framerate.den*10000000)
/ ctx->requested_framerate.num;
if (framerate > vcaps->MaxFrameInterval ||
framerate < vcaps->MinFrameInterval)
goto next;
*fr = framerate;
}
if (ctx->video_size) {
if (ctx->requested_width > vcaps->MaxOutputSize.cx ||
ctx->requested_width < vcaps->MinOutputSize.cx ||
ctx->requested_height > vcaps->MaxOutputSize.cy ||
ctx->requested_height < vcaps->MinOutputSize.cy)
goto next;
bih->biWidth = ctx->requested_width;
bih->biHeight = ctx->requested_height;
}
} else {
AUDIO_STREAM_CONFIG_CAPS *acaps = caps;
WAVEFORMATEX *fx;
#if DSHOWDEBUG
ff_print_AUDIO_STREAM_CONFIG_CAPS(acaps);
#endif
if (IsEqualGUID(&type->formattype, &FORMAT_WaveFormatEx)) {
fx = (void *) type->pbFormat;
} else {
goto next;
}
if (!pformat_set) {
av_log(avctx, AV_LOG_INFO, " min ch=%lu bits=%lu rate=%6lu max ch=%lu bits=%lu rate=%6lu\n",
acaps->MinimumChannels, acaps->MinimumBitsPerSample, acaps->MinimumSampleFrequency,
acaps->MaximumChannels, acaps->MaximumBitsPerSample, acaps->MaximumSampleFrequency);
continue;
}
if (ctx->sample_rate) {
if (ctx->sample_rate > acaps->MaximumSampleFrequency ||
ctx->sample_rate < acaps->MinimumSampleFrequency)
goto next;
fx->nSamplesPerSec = ctx->sample_rate;
}
if (ctx->sample_size) {
if (ctx->sample_size > acaps->MaximumBitsPerSample ||
ctx->sample_size < acaps->MinimumBitsPerSample)
goto next;
fx->wBitsPerSample = ctx->sample_size;
}
if (ctx->channels) {
if (ctx->channels > acaps->MaximumChannels ||
ctx->channels < acaps->MinimumChannels)
goto next;
fx->nChannels = ctx->channels;
}
}
if (IAMStreamConfig_SetFormat(config, type) != S_OK)
goto next;
format_set = 1;
next:
if (type->pbFormat)
CoTaskMemFree(type->pbFormat);
CoTaskMemFree(type);
}
end:
IAMStreamConfig_Release(config);
if (caps)
av_free(caps);
if (pformat_set)
*pformat_set = format_set;
}