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winegstreamer: Introduce an intermediate media format structure. 

The fundamental idea here is to provide a type which can be used in the unixlib
interface. Obviously GstCaps can't be used from PE, and while AM_MEDIA_TYPE can
in theory be used from the Unix library, allocation of the format block makes
things a little tricky. Moreover, we'd ideally like to use the same backend for
DirectShow and Media Foundation, and while it wouldn't be a problem currently,
in general AM_MEDIA_TYPE is not quite expressive enough to translate from
GstCaps to IMFMediaType, and the latter can't be used from the Unix library.

Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura 2021-02-08 15:06:59 -06:00 committed by Alexandre Julliard
parent a3e7cfd4d7
commit fb096d54a8
2 changed files with 490 additions and 94 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
dlls/winegstreamer/gst_private.h
View File

@ -66,6 +66,66 @@ static inline const char *debugstr_time(REFERENCE_TIME time)
#define MEDIATIME_FROM_BYTES(x) ((LONGLONG)(x) * 10000000)
struct wg_format
{
enum wg_major_type
{
WG_MAJOR_TYPE_UNKNOWN,
WG_MAJOR_TYPE_VIDEO,
WG_MAJOR_TYPE_AUDIO,
} major_type;
union
{
struct
{
enum wg_video_format
{
WG_VIDEO_FORMAT_UNKNOWN,
WG_VIDEO_FORMAT_BGRA,
WG_VIDEO_FORMAT_BGRx,
WG_VIDEO_FORMAT_BGR,
WG_VIDEO_FORMAT_RGB15,
WG_VIDEO_FORMAT_RGB16,
WG_VIDEO_FORMAT_AYUV,
WG_VIDEO_FORMAT_I420,
WG_VIDEO_FORMAT_NV12,
WG_VIDEO_FORMAT_UYVY,
WG_VIDEO_FORMAT_YUY2,
WG_VIDEO_FORMAT_YV12,
WG_VIDEO_FORMAT_YVYU,
WG_VIDEO_FORMAT_CINEPAK,
} format;
uint32_t width, height;
uint32_t fps_n, fps_d;
} video;
struct
{
enum wg_audio_format
{
WG_AUDIO_FORMAT_UNKNOWN,
WG_AUDIO_FORMAT_U8,
WG_AUDIO_FORMAT_S16LE,
WG_AUDIO_FORMAT_S24LE,
WG_AUDIO_FORMAT_S32LE,
WG_AUDIO_FORMAT_F32LE,
WG_AUDIO_FORMAT_F64LE,
WG_AUDIO_FORMAT_MPEG1_LAYER1,
WG_AUDIO_FORMAT_MPEG1_LAYER2,
WG_AUDIO_FORMAT_MPEG1_LAYER3,
} format;
uint32_t channels;
uint32_t rate;
} audio;
} u;
};
extern LONG object_locks;
HRESULT avi_splitter_create(IUnknown *outer, IUnknown **out) DECLSPEC_HIDDEN;

524
dlls/winegstreamer/gstdemux.c
View File

@ -45,6 +45,7 @@ GST_DEBUG_CATEGORY_STATIC(wine);
#define GST_CAT_DEFAULT wine
static const GUID MEDIASUBTYPE_CVID = {mmioFOURCC('c','v','i','d'), 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
static const GUID MEDIASUBTYPE_MP3 = {WAVE_FORMAT_MPEGLAYER3, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
struct wg_parser
{
@ -317,135 +318,470 @@ static gboolean amt_from_gst_video_info(const GstVideoInfo *info, AM_MEDIA_TYPE
return TRUE;
}
static gboolean amt_from_gst_caps_audio_mpeg(const GstCaps *caps, AM_MEDIA_TYPE *mt)
static enum wg_audio_format wg_audio_format_from_gst(GstAudioFormat format)
{
GstStructure *structure = gst_caps_get_structure(caps, 0);
gint layer, channels, rate;
switch (format)
{
case GST_AUDIO_FORMAT_U8:
return WG_AUDIO_FORMAT_U8;
case GST_AUDIO_FORMAT_S16LE:
return WG_AUDIO_FORMAT_S16LE;
case GST_AUDIO_FORMAT_S24LE:
return WG_AUDIO_FORMAT_S24LE;
case GST_AUDIO_FORMAT_S32LE:
return WG_AUDIO_FORMAT_S32LE;
case GST_AUDIO_FORMAT_F32LE:
return WG_AUDIO_FORMAT_F32LE;
case GST_AUDIO_FORMAT_F64LE:
return WG_AUDIO_FORMAT_F64LE;
default:
return WG_AUDIO_FORMAT_UNKNOWN;
}
}
mt->majortype = MEDIATYPE_Audio;
mt->subtype = MEDIASUBTYPE_MPEG1AudioPayload;
mt->bFixedSizeSamples = FALSE;
mt->bTemporalCompression = FALSE;
mt->lSampleSize = 0;
mt->formattype = FORMAT_WaveFormatEx;
mt->pUnk = NULL;
static void wg_format_from_audio_info(struct wg_format *format, const GstAudioInfo *info)
{
format->major_type = WG_MAJOR_TYPE_AUDIO;
format->u.audio.format = wg_audio_format_from_gst(GST_AUDIO_INFO_FORMAT(info));
format->u.audio.channels = GST_AUDIO_INFO_CHANNELS(info);
format->u.audio.rate = GST_AUDIO_INFO_RATE(info);
}
static enum wg_video_format wg_video_format_from_gst(GstVideoFormat format)
{
switch (format)
{
case GST_VIDEO_FORMAT_BGRA:
return WG_VIDEO_FORMAT_BGRA;
case GST_VIDEO_FORMAT_BGRx:
return WG_VIDEO_FORMAT_BGRx;
case GST_VIDEO_FORMAT_BGR:
return WG_VIDEO_FORMAT_BGR;
case GST_VIDEO_FORMAT_RGB15:
return WG_VIDEO_FORMAT_RGB15;
case GST_VIDEO_FORMAT_AYUV:
return WG_VIDEO_FORMAT_AYUV;
case GST_VIDEO_FORMAT_I420:
return WG_VIDEO_FORMAT_I420;
case GST_VIDEO_FORMAT_NV12:
return WG_VIDEO_FORMAT_NV12;
case GST_VIDEO_FORMAT_UYVY:
return WG_VIDEO_FORMAT_UYVY;
case GST_VIDEO_FORMAT_YUY2:
return WG_VIDEO_FORMAT_YUY2;
case GST_VIDEO_FORMAT_YV12:
return WG_VIDEO_FORMAT_YV12;
case GST_VIDEO_FORMAT_YVYU:
return WG_VIDEO_FORMAT_YVYU;
default:
return WG_VIDEO_FORMAT_UNKNOWN;
}
}
static void wg_format_from_video_info(struct wg_format *format, const GstVideoInfo *info)
{
format->major_type = WG_MAJOR_TYPE_VIDEO;
format->u.video.format = wg_video_format_from_gst(GST_VIDEO_INFO_FORMAT(info));
format->u.video.width = GST_VIDEO_INFO_WIDTH(info);
format->u.video.height = GST_VIDEO_INFO_HEIGHT(info);
format->u.video.fps_n = GST_VIDEO_INFO_FPS_N(info);
format->u.video.fps_d = GST_VIDEO_INFO_FPS_D(info);
}
static void wg_format_from_caps_audio_mpeg(struct wg_format *format, const GstCaps *caps)
{
const GstStructure *structure = gst_caps_get_structure(caps, 0);
gint layer, channels, rate;
if (!gst_structure_get_int(structure, "layer", &layer))
{
WARN("Missing 'layer' value.\n");
return FALSE;
GST_WARNING("Missing \"layer\" value.");
return;
}
if (!gst_structure_get_int(structure, "channels", &channels))
{
WARN("Missing 'channels' value.\n");
return FALSE;
GST_WARNING("Missing \"channels\" value.");
return;
}
if (!gst_structure_get_int(structure, "rate", &rate))
{
WARN("Missing 'rate' value.\n");
return FALSE;
GST_WARNING("Missing \"rate\" value.");
return;
}
if (layer == 3)
{
MPEGLAYER3WAVEFORMAT *wfx = CoTaskMemAlloc(sizeof(*wfx));
memset(wfx, 0, sizeof(*wfx));
format->major_type = WG_MAJOR_TYPE_AUDIO;
mt->subtype.Data1 = WAVE_FORMAT_MPEGLAYER3;
mt->cbFormat = sizeof(*wfx);
mt->pbFormat = (BYTE *)wfx;
wfx->wfx.wFormatTag = WAVE_FORMAT_MPEGLAYER3;
wfx->wfx.nChannels = channels;
wfx->wfx.nSamplesPerSec = rate;
/* FIXME: We can't get most of the MPEG data from the caps. We may have
* to manually parse the header. */
wfx->wfx.cbSize = sizeof(*wfx) - sizeof(WAVEFORMATEX);
wfx->wID = MPEGLAYER3_ID_MPEG;
wfx->fdwFlags = MPEGLAYER3_FLAG_PADDING_ON;
wfx->nFramesPerBlock = 1;
wfx->nCodecDelay = 1393;
}
else
{
MPEG1WAVEFORMAT *wfx = CoTaskMemAlloc(sizeof(*wfx));
memset(wfx, 0, sizeof(*wfx));
if (layer == 1)
format->u.audio.format = WG_AUDIO_FORMAT_MPEG1_LAYER1;
else if (layer == 2)
format->u.audio.format = WG_AUDIO_FORMAT_MPEG1_LAYER2;
else if (layer == 3)
format->u.audio.format = WG_AUDIO_FORMAT_MPEG1_LAYER3;
mt->subtype.Data1 = WAVE_FORMAT_MPEG;
mt->cbFormat = sizeof(*wfx);
mt->pbFormat = (BYTE *)wfx;
wfx->wfx.wFormatTag = WAVE_FORMAT_MPEG;
wfx->wfx.nChannels = channels;
wfx->wfx.nSamplesPerSec = rate;
wfx->wfx.cbSize = sizeof(*wfx) - sizeof(WAVEFORMATEX);
wfx->fwHeadLayer = layer;
}
return TRUE;
format->u.audio.channels = channels;
format->u.audio.rate = rate;
}
static gboolean amt_from_gst_caps(const GstCaps *caps, AM_MEDIA_TYPE *mt)
static void wg_format_from_caps_video_cinepak(struct wg_format *format, const GstCaps *caps)
{
const char *type = gst_structure_get_name(gst_caps_get_structure(caps, 0));
GstStructure *structure = gst_caps_get_structure(caps, 0);
const GstStructure *structure = gst_caps_get_structure(caps, 0);
gint width, height, fps_n, fps_d;
memset(mt, 0, sizeof(AM_MEDIA_TYPE));
if (!gst_structure_get_int(structure, "width", &width))
{
GST_WARNING("Missing \"width\" value.");
return;
}
if (!gst_structure_get_int(structure, "height", &height))
{
GST_WARNING("Missing \"height\" value.");
return;
}
if (!gst_structure_get_fraction(structure, "framerate", &fps_n, &fps_d))
{
fps_n = 0;
fps_d = 1;
}
if (!strcmp(type, "audio/x-raw"))
format->major_type = WG_MAJOR_TYPE_VIDEO;
format->u.video.format = WG_VIDEO_FORMAT_CINEPAK;
format->u.video.width = width;
format->u.video.height = height;
format->u.video.fps_n = fps_n;
format->u.video.fps_d = fps_d;
}
static void wg_format_from_caps(struct wg_format *format, const GstCaps *caps)
{
const GstStructure *structure = gst_caps_get_structure(caps, 0);
const char *name = gst_structure_get_name(structure);
memset(format, 0, sizeof(*format));
if (!strcmp(name, "audio/x-raw"))
{
GstAudioInfo info;
if (!(gst_audio_info_from_caps(&info, caps)))
return FALSE;
return amt_from_gst_audio_info(&info, mt);
if (gst_audio_info_from_caps(&info, caps))
wg_format_from_audio_info(format, &info);
}
else if (!strcmp(type, "video/x-raw"))
else if (!strcmp(name, "video/x-raw"))
{
GstVideoInfo info;
if (!gst_video_info_from_caps(&info, caps))
return FALSE;
return amt_from_gst_video_info(&info, mt);
if (gst_video_info_from_caps(&info, caps))
wg_format_from_video_info(format, &info);
}
else if (!strcmp(type, "audio/mpeg"))
return amt_from_gst_caps_audio_mpeg(caps, mt);
else if (!strcmp(type, "video/x-cinepak"))
else if (!strcmp(name, "audio/mpeg"))
{
VIDEOINFOHEADER *vih;
gint i;
mt->majortype = MEDIATYPE_Video;
mt->subtype = MEDIASUBTYPE_CVID;
mt->bTemporalCompression = TRUE;
mt->lSampleSize = 1;
mt->formattype = FORMAT_VideoInfo;
if (!(vih = CoTaskMemAlloc(sizeof(VIDEOINFOHEADER))))
return FALSE;
mt->cbFormat = sizeof(VIDEOINFOHEADER);
mt->pbFormat = (BYTE *)vih;
memset(vih, 0, sizeof(VIDEOINFOHEADER));
vih->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
if (gst_structure_get_int(structure, "width", &i))
vih->bmiHeader.biWidth = i;
if (gst_structure_get_int(structure, "height", &i))
vih->bmiHeader.biHeight = i;
vih->bmiHeader.biPlanes = 1;
/* Both ffmpeg's encoder and a Cinepak file seen in the wild report
* 24 bpp. ffmpeg sets biSizeImage as below; others may be smaller, but
* as long as every sample fits into our allocator, we're fine. */
vih->bmiHeader.biBitCount = 24;
vih->bmiHeader.biCompression = mmioFOURCC('c','v','i','d');
vih->bmiHeader.biSizeImage = vih->bmiHeader.biWidth
* vih->bmiHeader.biHeight * vih->bmiHeader.biBitCount / 8;
return TRUE;
wg_format_from_caps_audio_mpeg(format, caps);
}
else if (!strcmp(name, "video/x-cinepak"))
{
wg_format_from_caps_video_cinepak(format, caps);
}
else
{
FIXME("Unhandled type %s.\n", debugstr_a(type));
return FALSE;
gchar *str = gst_caps_to_string(caps);
GST_FIXME("Unhandled caps %s.", str);
g_free(str);
}
}
static DWORD channel_mask_from_count(uint32_t count)
{
switch (count)
{
case 1: return KSAUDIO_SPEAKER_MONO;
case 2: return KSAUDIO_SPEAKER_STEREO;
case 4: return KSAUDIO_SPEAKER_SURROUND;
case 5: return KSAUDIO_SPEAKER_5POINT1 & ~SPEAKER_LOW_FREQUENCY;
case 6: return KSAUDIO_SPEAKER_5POINT1;
case 8: return KSAUDIO_SPEAKER_7POINT1;
default: return 0;
}
}
static bool amt_from_wg_format_audio(AM_MEDIA_TYPE *mt, const struct wg_format *format)
{
mt->majortype = MEDIATYPE_Audio;
mt->formattype = FORMAT_WaveFormatEx;
switch (format->u.audio.format)
{
case WG_AUDIO_FORMAT_UNKNOWN:
return false;
case WG_AUDIO_FORMAT_MPEG1_LAYER1:
case WG_AUDIO_FORMAT_MPEG1_LAYER2:
{
MPEG1WAVEFORMAT *wave_format;
if (!(wave_format = CoTaskMemAlloc(sizeof(*wave_format))))
return false;
memset(wave_format, 0, sizeof(*wave_format));
mt->subtype = MEDIASUBTYPE_MPEG1AudioPayload;
mt->cbFormat = sizeof(*wave_format);
mt->pbFormat = (BYTE *)wave_format;
wave_format->wfx.wFormatTag = WAVE_FORMAT_MPEG;
wave_format->wfx.nChannels = format->u.audio.channels;
wave_format->wfx.nSamplesPerSec = format->u.audio.rate;
wave_format->wfx.cbSize = sizeof(*wave_format) - sizeof(WAVEFORMATEX);
wave_format->fwHeadLayer = (format->u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER1 ? 1 : 2);
return true;
}
case WG_AUDIO_FORMAT_MPEG1_LAYER3:
{
MPEGLAYER3WAVEFORMAT *wave_format;
if (!(wave_format = CoTaskMemAlloc(sizeof(*wave_format))))
return false;
memset(wave_format, 0, sizeof(*wave_format));
mt->subtype = MEDIASUBTYPE_MP3;
mt->cbFormat = sizeof(*wave_format);
mt->pbFormat = (BYTE *)wave_format;
wave_format->wfx.wFormatTag = WAVE_FORMAT_MPEGLAYER3;
wave_format->wfx.nChannels = format->u.audio.channels;
wave_format->wfx.nSamplesPerSec = format->u.audio.rate;
wave_format->wfx.cbSize = sizeof(*wave_format) - sizeof(WAVEFORMATEX);
/* FIXME: We can't get most of the MPEG data from the caps. We may have
* to manually parse the header. */
wave_format->wID = MPEGLAYER3_ID_MPEG;
wave_format->fdwFlags = MPEGLAYER3_FLAG_PADDING_ON;
wave_format->nFramesPerBlock = 1;
wave_format->nCodecDelay = 1393;
return true;
}
case WG_AUDIO_FORMAT_U8:
case WG_AUDIO_FORMAT_S16LE:
case WG_AUDIO_FORMAT_S24LE:
case WG_AUDIO_FORMAT_S32LE:
case WG_AUDIO_FORMAT_F32LE:
case WG_AUDIO_FORMAT_F64LE:
{
static const struct
{
bool is_float;
WORD depth;
}
format_table[] =
{
{0},
{false, 8},
{false, 16},
{false, 24},
{false, 32},
{true, 32},
{true, 64},
};
bool is_float;
WORD depth;
assert(format->u.audio.format < ARRAY_SIZE(format_table));
is_float = format_table[format->u.audio.format].is_float;
depth = format_table[format->u.audio.format].depth;
if (is_float || format->u.audio.channels > 2)
{
WAVEFORMATEXTENSIBLE *wave_format;
if (!(wave_format = CoTaskMemAlloc(sizeof(*wave_format))))
return false;
memset(wave_format, 0, sizeof(*wave_format));
mt->subtype = is_float ? MEDIASUBTYPE_IEEE_FLOAT : MEDIASUBTYPE_PCM;
mt->bFixedSizeSamples = TRUE;
mt->pbFormat = (BYTE *)wave_format;
mt->cbFormat = sizeof(*wave_format);
wave_format->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
wave_format->Format.nChannels = format->u.audio.channels;
wave_format->Format.nSamplesPerSec = format->u.audio.rate;
wave_format->Format.nAvgBytesPerSec = format->u.audio.rate * format->u.audio.channels * depth / 8;
wave_format->Format.nBlockAlign = format->u.audio.channels * depth / 8;
wave_format->Format.wBitsPerSample = depth;
wave_format->Format.cbSize = sizeof(*wave_format) - sizeof(WAVEFORMATEX);
wave_format->Samples.wValidBitsPerSample = depth;
wave_format->dwChannelMask = channel_mask_from_count(format->u.audio.channels);
wave_format->SubFormat = is_float ? KSDATAFORMAT_SUBTYPE_IEEE_FLOAT : KSDATAFORMAT_SUBTYPE_PCM;
mt->lSampleSize = wave_format->Format.nBlockAlign;
}
else
{
WAVEFORMATEX *wave_format;
if (!(wave_format = CoTaskMemAlloc(sizeof(*wave_format))))
return false;
memset(wave_format, 0, sizeof(*wave_format));
mt->subtype = MEDIASUBTYPE_PCM;
mt->bFixedSizeSamples = TRUE;
mt->pbFormat = (BYTE *)wave_format;
mt->cbFormat = sizeof(*wave_format);
wave_format->wFormatTag = WAVE_FORMAT_PCM;
wave_format->nChannels = format->u.audio.channels;
wave_format->nSamplesPerSec = format->u.audio.rate;
wave_format->nAvgBytesPerSec = format->u.audio.rate * format->u.audio.channels * depth / 8;
wave_format->nBlockAlign = format->u.audio.channels * depth / 8;
wave_format->wBitsPerSample = depth;
wave_format->cbSize = 0;
mt->lSampleSize = wave_format->nBlockAlign;
}
return true;
}
}
assert(0);
return false;
}
#define ALIGN(n, alignment) (((n) + (alignment) - 1) & ~((alignment) - 1))
static unsigned int get_image_size(const struct wg_format *format)
{
unsigned int width = format->u.video.width, height = format->u.video.height;
switch (format->u.video.format)
{
case WG_VIDEO_FORMAT_BGRA:
case WG_VIDEO_FORMAT_BGRx:
case WG_VIDEO_FORMAT_AYUV:
return width * height * 4;
case WG_VIDEO_FORMAT_BGR:
return ALIGN(width * 3, 4) * height;
case WG_VIDEO_FORMAT_RGB15:
case WG_VIDEO_FORMAT_RGB16:
case WG_VIDEO_FORMAT_UYVY:
case WG_VIDEO_FORMAT_YUY2:
case WG_VIDEO_FORMAT_YVYU:
return ALIGN(width * 2, 4) * height;
case WG_VIDEO_FORMAT_I420:
case WG_VIDEO_FORMAT_YV12:
return ALIGN(width, 4) * ALIGN(height, 2) /* Y plane */
+ 2 * ALIGN((width + 1) / 2, 4) * ((height + 1) / 2); /* U and V planes */
case WG_VIDEO_FORMAT_NV12:
return ALIGN(width, 4) * ALIGN(height, 2) /* Y plane */
+ ALIGN(width, 4) * ((height + 1) / 2); /* U/V plane */
case WG_VIDEO_FORMAT_CINEPAK:
/* Both ffmpeg's encoder and a Cinepak file seen in the wild report
* 24 bpp. ffmpeg sets biSizeImage as below; others may be smaller,
* but as long as every sample fits into our allocator, we're fine. */
return width * height * 3;
case WG_VIDEO_FORMAT_UNKNOWN:
break;
}
assert(0);
return 0;
}
static bool amt_from_wg_format_video(AM_MEDIA_TYPE *mt, const struct wg_format *format)
{
static const struct
{
const GUID *subtype;
DWORD compression;
WORD depth;
}
format_table[] =
{
{0},
{&MEDIASUBTYPE_ARGB32, BI_RGB, 32},
{&MEDIASUBTYPE_RGB32, BI_RGB, 32},
{&MEDIASUBTYPE_RGB24, BI_RGB, 24},
{&MEDIASUBTYPE_RGB555, BI_RGB, 16},
{&MEDIASUBTYPE_RGB565, BI_BITFIELDS, 16},
{&MEDIASUBTYPE_AYUV, mmioFOURCC('A','Y','U','V'), 32},
{&MEDIASUBTYPE_I420, mmioFOURCC('I','4','2','0'), 12},
{&MEDIASUBTYPE_NV12, mmioFOURCC('N','V','1','2'), 12},
{&MEDIASUBTYPE_UYVY, mmioFOURCC('U','Y','V','Y'), 16},
{&MEDIASUBTYPE_YUY2, mmioFOURCC('Y','U','Y','2'), 16},
{&MEDIASUBTYPE_YV12, mmioFOURCC('Y','V','1','2'), 12},
{&MEDIASUBTYPE_YVYU, mmioFOURCC('Y','V','Y','U'), 16},
{&MEDIASUBTYPE_CVID, mmioFOURCC('C','V','I','D'), 24},
};
VIDEOINFO *video_format;
uint32_t frame_time;
if (format->u.video.format == WG_VIDEO_FORMAT_UNKNOWN)
return false;
if (!(video_format = CoTaskMemAlloc(sizeof(*video_format))))
return false;
assert(format->u.video.format < ARRAY_SIZE(format_table));
mt->majortype = MEDIATYPE_Video;
mt->subtype = *format_table[format->u.video.format].subtype;
mt->bTemporalCompression = TRUE;
mt->lSampleSize = 1;
mt->formattype = FORMAT_VideoInfo;
mt->cbFormat = sizeof(VIDEOINFOHEADER);
mt->pbFormat = (BYTE *)video_format;
memset(video_format, 0, sizeof(*video_format));
if ((frame_time = MulDiv(10000000, format->u.video.fps_d, format->u.video.fps_n)) != -1)
video_format->AvgTimePerFrame = frame_time;
video_format->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
video_format->bmiHeader.biWidth = format->u.video.width;
video_format->bmiHeader.biHeight = format->u.video.height;
video_format->bmiHeader.biPlanes = 1;
video_format->bmiHeader.biBitCount = format_table[format->u.video.format].depth;
video_format->bmiHeader.biCompression = format_table[format->u.video.format].compression;
video_format->bmiHeader.biSizeImage = get_image_size(format);
if (format->u.video.format == WG_VIDEO_FORMAT_RGB16)
{
mt->cbFormat = offsetof(VIDEOINFO, u.dwBitMasks[3]);
video_format->u.dwBitMasks[iRED] = 0xf800;
video_format->u.dwBitMasks[iGREEN] = 0x07e0;
video_format->u.dwBitMasks[iBLUE] = 0x001f;
}
return true;
}
static bool amt_from_wg_format(AM_MEDIA_TYPE *mt, const struct wg_format *format)
{
memset(mt, 0, sizeof(*mt));
switch (format->major_type)
{
case WG_MAJOR_TYPE_UNKNOWN:
return false;
case WG_MAJOR_TYPE_AUDIO:
return amt_from_wg_format_audio(mt, format);
case WG_MAJOR_TYPE_VIDEO:
return amt_from_wg_format_video(mt, format);
}
assert(0);
return false;
}
static bool amt_from_gst_caps(const GstCaps *caps, AM_MEDIA_TYPE *mt)
{
struct wg_format wg_format;
wg_format_from_caps(&wg_format, caps);
return amt_from_wg_format(mt, &wg_format);
}
static GstCaps *amt_to_gst_caps_video(const AM_MEDIA_TYPE *mt)
{
static const struct