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dshow: add audio/video options 

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
This commit is contained in:
Ramiro Polla 2011-09-09 00:12:42 -03:00 committed by Stefano Sabatini
parent d0da310317
commit c4b2027d10
4 changed files with 212 additions and 1 deletions
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2
libavdevice/avdevice.h
View File

@ -24,7 +24,7 @@
#define LIBAVDEVICE_VERSION_MAJOR 53
#define LIBAVDEVICE_VERSION_MINOR 3
#define LIBAVDEVICE_VERSION_MICRO 0
#define LIBAVDEVICE_VERSION_MICRO 1
#define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \
LIBAVDEVICE_VERSION_MINOR, \

160
libavdevice/dshow.c
View File

@ -19,6 +19,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/parseutils.h"
#include "libavutil/opt.h"
#include "avdevice.h"
@ -46,6 +47,17 @@ struct dshow_ctx {
unsigned int video_frame_num;
IMediaControl *control;
char *video_size;
char *framerate;
int requested_width;
int requested_height;
AVRational requested_framerate;
int sample_rate;
int sample_size;
int channels;
};
static enum PixelFormat dshow_pixfmt(DWORD biCompression, WORD biBitCount)
@ -295,6 +307,118 @@ fail1:
return 0;
}
/**
* Cycle through available formats using the specified pin,
* try to set parameters specified through AVOptions and if successful
* return 1 in *pformat_set.
*/
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 (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 (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);
*pformat_set = format_set;
}
/**
* Cycle through available pins using the device_filter device, of type
* devtype, retrieve the first output pin and return the pointer to the
@ -304,6 +428,7 @@ static int
dshow_cycle_pins(AVFormatContext *avctx, enum dshowDeviceType devtype,
IBaseFilter *device_filter, IPin **ppin)
{
struct dshow_ctx *ctx = avctx->priv_data;
IEnumPins *pins = 0;
IPin *device_pin = NULL;
IPin *pin;
@ -312,6 +437,10 @@ dshow_cycle_pins(AVFormatContext *avctx, enum dshowDeviceType devtype,
const GUID *mediatype[2] = { &MEDIATYPE_Video, &MEDIATYPE_Audio };
const char *devtypename = (devtype == VideoDevice) ? "video" : "audio";
int set_format = (devtype == VideoDevice && (ctx->video_size || ctx->framerate))
|| (devtype == AudioDevice && (ctx->channels || ctx->sample_rate));
int format_set = 0;
r = IBaseFilter_EnumPins(device_filter, &pins);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not enumerate pins.\n");
@ -339,6 +468,13 @@ dshow_cycle_pins(AVFormatContext *avctx, enum dshowDeviceType devtype,
if (!IsEqualGUID(&category, &PIN_CATEGORY_CAPTURE))
goto next;
if (set_format) {
dshow_cycle_formats(avctx, devtype, pin, &format_set);
if (!format_set) {
goto next;
}
}
if (IPin_EnumMediaTypes(pin, &types) != S_OK)
goto next;
@ -362,6 +498,10 @@ next:
IEnumPins_Release(pins);
if (set_format && !format_set) {
av_log(avctx, AV_LOG_ERROR, "Could not set %s options\n", devtypename);
return AVERROR(EIO);
}
if (!device_pin) {
av_log(avctx, AV_LOG_ERROR,
"Could not find output pin from %s capture device.\n", devtypename);
@ -594,6 +734,21 @@ static int dshow_read_header(AVFormatContext *avctx, AVFormatParameters *ap)
goto error;
}
if (ctx->video_size) {
r = av_parse_video_size(&ctx->requested_width, &ctx->requested_height, ctx->video_size);
if (r < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not parse video size '%s'.\n", ctx->video_size);
goto error;
}
}
if (ctx->framerate) {
r = av_parse_video_rate(&ctx->requested_framerate, ctx->framerate);
if (r < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", ctx->framerate);
goto error;
}
}
CoInitialize(0);
r = CoCreateInstance(&CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
@ -710,6 +865,11 @@ static int dshow_read_packet(AVFormatContext *s, AVPacket *pkt)
#define OFFSET(x) offsetof(struct dshow_ctx, x)
#define DEC AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = {
{ "video_size", "set video size given a string such as 640x480 or hd720.", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "framerate", "set video frame rate", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "sample_rate", "set audio sample rate", OFFSET(sample_rate), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, DEC },
{ "sample_size", "set audio sample size", OFFSET(sample_size), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 16, DEC },
{ "channels", "set number of audio channels, such as 1 or 2", OFFSET(channels), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, DEC },
{ "list_devices", "list available devices", OFFSET(list_devices), FF_OPT_TYPE_INT, {.dbl=0}, 0, 1, DEC, "list_devices" },
{ "true", "", 0, FF_OPT_TYPE_CONST, {.dbl=1}, 0, 0, DEC, "list_devices" },
{ "false", "", 0, FF_OPT_TYPE_CONST, {.dbl=0}, 0, 0, DEC, "list_devices" },

2
libavdevice/dshow.h
View File

@ -29,6 +29,8 @@
#include <dvdmedia.h>
long ff_copy_dshow_media_type(AM_MEDIA_TYPE *dst, const AM_MEDIA_TYPE *src);
void ff_print_VIDEO_STREAM_CONFIG_CAPS(const VIDEO_STREAM_CONFIG_CAPS *caps);
void ff_print_AUDIO_STREAM_CONFIG_CAPS(const AUDIO_STREAM_CONFIG_CAPS *caps);
void ff_print_AM_MEDIA_TYPE(const AM_MEDIA_TYPE *type);
void ff_printGUID(const GUID *g);

49
libavdevice/dshow_common.c
View File

@ -82,6 +82,55 @@ static void dump_bih(void *s, BITMAPINFOHEADER *bih)
}
#endif
void ff_print_VIDEO_STREAM_CONFIG_CAPS(const VIDEO_STREAM_CONFIG_CAPS *caps)
{
#if DSHOWDEBUG
dshowdebug(" VIDEO_STREAM_CONFIG_CAPS\n");
dshowdebug(" guid\t");
ff_printGUID(&caps->guid);
dshowdebug("\n");
dshowdebug(" VideoStandard\t%lu\n", caps->VideoStandard);
dshowdebug(" InputSize %ld\t%ld\n", caps->InputSize.cx, caps->InputSize.cy);
dshowdebug(" MinCroppingSize %ld\t%ld\n", caps->MinCroppingSize.cx, caps->MinCroppingSize.cy);
dshowdebug(" MaxCroppingSize %ld\t%ld\n", caps->MaxCroppingSize.cx, caps->MaxCroppingSize.cy);
dshowdebug(" CropGranularityX\t%d\n", caps->CropGranularityX);
dshowdebug(" CropGranularityY\t%d\n", caps->CropGranularityY);
dshowdebug(" CropAlignX\t%d\n", caps->CropAlignX);
dshowdebug(" CropAlignY\t%d\n", caps->CropAlignY);
dshowdebug(" MinOutputSize %ld\t%ld\n", caps->MinOutputSize.cx, caps->MinOutputSize.cy);
dshowdebug(" MaxOutputSize %ld\t%ld\n", caps->MaxOutputSize.cx, caps->MaxOutputSize.cy);
dshowdebug(" OutputGranularityX\t%d\n", caps->OutputGranularityX);
dshowdebug(" OutputGranularityY\t%d\n", caps->OutputGranularityY);
dshowdebug(" StretchTapsX\t%d\n", caps->StretchTapsX);
dshowdebug(" StretchTapsY\t%d\n", caps->StretchTapsY);
dshowdebug(" ShrinkTapsX\t%d\n", caps->ShrinkTapsX);
dshowdebug(" ShrinkTapsY\t%d\n", caps->ShrinkTapsY);
dshowdebug(" MinFrameInterval\t%"PRId64"\n", caps->MinFrameInterval);
dshowdebug(" MaxFrameInterval\t%"PRId64"\n", caps->MaxFrameInterval);
dshowdebug(" MinBitsPerSecond\t%ld\n", caps->MinBitsPerSecond);
dshowdebug(" MaxBitsPerSecond\t%ld\n", caps->MaxBitsPerSecond);
#endif
}
void ff_print_AUDIO_STREAM_CONFIG_CAPS(const AUDIO_STREAM_CONFIG_CAPS *caps)
{
#if DSHOWDEBUG
dshowdebug(" AUDIO_STREAM_CONFIG_CAPS\n");
dshowdebug(" guid\t");
ff_printGUID(&caps->guid);
dshowdebug("\n");
dshowdebug(" MinimumChannels\t%lu\n", caps->MinimumChannels);
dshowdebug(" MaximumChannels\t%lu\n", caps->MaximumChannels);
dshowdebug(" ChannelsGranularity\t%lu\n", caps->ChannelsGranularity);
dshowdebug(" MinimumBitsPerSample\t%lu\n", caps->MinimumBitsPerSample);
dshowdebug(" MaximumBitsPerSample\t%lu\n", caps->MaximumBitsPerSample);
dshowdebug(" BitsPerSampleGranularity\t%lu\n", caps->BitsPerSampleGranularity);
dshowdebug(" MinimumSampleFrequency\t%lu\n", caps->MinimumSampleFrequency);
dshowdebug(" MaximumSampleFrequency\t%lu\n", caps->MaximumSampleFrequency);
dshowdebug(" SampleFrequencyGranularity\t%lu\n", caps->SampleFrequencyGranularity);
#endif
}
void ff_print_AM_MEDIA_TYPE(const AM_MEDIA_TYPE *type)
{
#if DSHOWDEBUG