FFmpeg  4.3
dshow_common.c
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1 /*
2  * Directshow capture interface
3  * Copyright (c) 2010 Ramiro Polla
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "dshow_capture.h"
23 
24 long ff_copy_dshow_media_type(AM_MEDIA_TYPE *dst, const AM_MEDIA_TYPE *src)
25 {
26  uint8_t *pbFormat = NULL;
27 
28  if (src->cbFormat) {
29  pbFormat = CoTaskMemAlloc(src->cbFormat);
30  if (!pbFormat)
31  return E_OUTOFMEMORY;
32  memcpy(pbFormat, src->pbFormat, src->cbFormat);
33  }
34 
35  *dst = *src;
36  dst->pUnk = NULL;
37  dst->pbFormat = pbFormat;
38 
39  return S_OK;
40 }
41 
42 void ff_printGUID(const GUID *g)
43 {
44 #if DSHOWDEBUG
45  const uint32_t *d = (const uint32_t *) &g->Data1;
46  const uint16_t *w = (const uint16_t *) &g->Data2;
47  const uint8_t *c = (const uint8_t *) &g->Data4;
48 
49  dshowdebug("0x%08x 0x%04x 0x%04x %02x%02x%02x%02x%02x%02x%02x%02x",
50  d[0], w[0], w[1],
51  c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]);
52 #endif
53 }
54 
55 static const char *dshow_context_to_name(void *ptr)
56 {
57  return "dshow";
58 }
59 static const AVClass ff_dshow_context_class = { "DirectShow", dshow_context_to_name };
61 
62 #define dstruct(pctx, sname, var, type) \
63  dshowdebug(" "#var":\t%"type"\n", sname->var)
64 
65 #if DSHOWDEBUG
66 static void dump_bih(void *s, BITMAPINFOHEADER *bih)
67 {
68  dshowdebug(" BITMAPINFOHEADER\n");
69  dstruct(s, bih, biSize, "lu");
70  dstruct(s, bih, biWidth, "ld");
71  dstruct(s, bih, biHeight, "ld");
72  dstruct(s, bih, biPlanes, "d");
73  dstruct(s, bih, biBitCount, "d");
74  dstruct(s, bih, biCompression, "lu");
75  dshowdebug(" biCompression:\t\"%.4s\"\n",
76  (char*) &bih->biCompression);
77  dstruct(s, bih, biSizeImage, "lu");
78  dstruct(s, bih, biXPelsPerMeter, "lu");
79  dstruct(s, bih, biYPelsPerMeter, "lu");
80  dstruct(s, bih, biClrUsed, "lu");
81  dstruct(s, bih, biClrImportant, "lu");
82 }
83 #endif
84 
85 void ff_print_VIDEO_STREAM_CONFIG_CAPS(const VIDEO_STREAM_CONFIG_CAPS *caps)
86 {
87 #if DSHOWDEBUG
88  dshowdebug(" VIDEO_STREAM_CONFIG_CAPS\n");
89  dshowdebug(" guid\t");
90  ff_printGUID(&caps->guid);
91  dshowdebug("\n");
92  dshowdebug(" VideoStandard\t%lu\n", caps->VideoStandard);
93  dshowdebug(" InputSize %ld\t%ld\n", caps->InputSize.cx, caps->InputSize.cy);
94  dshowdebug(" MinCroppingSize %ld\t%ld\n", caps->MinCroppingSize.cx, caps->MinCroppingSize.cy);
95  dshowdebug(" MaxCroppingSize %ld\t%ld\n", caps->MaxCroppingSize.cx, caps->MaxCroppingSize.cy);
96  dshowdebug(" CropGranularityX\t%d\n", caps->CropGranularityX);
97  dshowdebug(" CropGranularityY\t%d\n", caps->CropGranularityY);
98  dshowdebug(" CropAlignX\t%d\n", caps->CropAlignX);
99  dshowdebug(" CropAlignY\t%d\n", caps->CropAlignY);
100  dshowdebug(" MinOutputSize %ld\t%ld\n", caps->MinOutputSize.cx, caps->MinOutputSize.cy);
101  dshowdebug(" MaxOutputSize %ld\t%ld\n", caps->MaxOutputSize.cx, caps->MaxOutputSize.cy);
102  dshowdebug(" OutputGranularityX\t%d\n", caps->OutputGranularityX);
103  dshowdebug(" OutputGranularityY\t%d\n", caps->OutputGranularityY);
104  dshowdebug(" StretchTapsX\t%d\n", caps->StretchTapsX);
105  dshowdebug(" StretchTapsY\t%d\n", caps->StretchTapsY);
106  dshowdebug(" ShrinkTapsX\t%d\n", caps->ShrinkTapsX);
107  dshowdebug(" ShrinkTapsY\t%d\n", caps->ShrinkTapsY);
108  dshowdebug(" MinFrameInterval\t%"PRId64"\n", caps->MinFrameInterval);
109  dshowdebug(" MaxFrameInterval\t%"PRId64"\n", caps->MaxFrameInterval);
110  dshowdebug(" MinBitsPerSecond\t%ld\n", caps->MinBitsPerSecond);
111  dshowdebug(" MaxBitsPerSecond\t%ld\n", caps->MaxBitsPerSecond);
112 #endif
113 }
114 
115 void ff_print_AUDIO_STREAM_CONFIG_CAPS(const AUDIO_STREAM_CONFIG_CAPS *caps)
116 {
117 #if DSHOWDEBUG
118  dshowdebug(" AUDIO_STREAM_CONFIG_CAPS\n");
119  dshowdebug(" guid\t");
120  ff_printGUID(&caps->guid);
121  dshowdebug("\n");
122  dshowdebug(" MinimumChannels\t%lu\n", caps->MinimumChannels);
123  dshowdebug(" MaximumChannels\t%lu\n", caps->MaximumChannels);
124  dshowdebug(" ChannelsGranularity\t%lu\n", caps->ChannelsGranularity);
125  dshowdebug(" MinimumBitsPerSample\t%lu\n", caps->MinimumBitsPerSample);
126  dshowdebug(" MaximumBitsPerSample\t%lu\n", caps->MaximumBitsPerSample);
127  dshowdebug(" BitsPerSampleGranularity\t%lu\n", caps->BitsPerSampleGranularity);
128  dshowdebug(" MinimumSampleFrequency\t%lu\n", caps->MinimumSampleFrequency);
129  dshowdebug(" MaximumSampleFrequency\t%lu\n", caps->MaximumSampleFrequency);
130  dshowdebug(" SampleFrequencyGranularity\t%lu\n", caps->SampleFrequencyGranularity);
131 #endif
132 }
133 
134 void ff_print_AM_MEDIA_TYPE(const AM_MEDIA_TYPE *type)
135 {
136 #if DSHOWDEBUG
137  dshowdebug(" majortype\t");
138  ff_printGUID(&type->majortype);
139  dshowdebug("\n");
140  dshowdebug(" subtype\t");
141  ff_printGUID(&type->subtype);
142  dshowdebug("\n");
143  dshowdebug(" bFixedSizeSamples\t%d\n", type->bFixedSizeSamples);
144  dshowdebug(" bTemporalCompression\t%d\n", type->bTemporalCompression);
145  dshowdebug(" lSampleSize\t%lu\n", type->lSampleSize);
146  dshowdebug(" formattype\t");
147  ff_printGUID(&type->formattype);
148  dshowdebug("\n");
149  dshowdebug(" pUnk\t%p\n", type->pUnk);
150  dshowdebug(" cbFormat\t%lu\n", type->cbFormat);
151  dshowdebug(" pbFormat\t%p\n", type->pbFormat);
152 
153  if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo)) {
154  VIDEOINFOHEADER *v = (void *) type->pbFormat;
155  dshowdebug(" rcSource: left %ld top %ld right %ld bottom %ld\n",
156  v->rcSource.left, v->rcSource.top, v->rcSource.right, v->rcSource.bottom);
157  dshowdebug(" rcTarget: left %ld top %ld right %ld bottom %ld\n",
158  v->rcTarget.left, v->rcTarget.top, v->rcTarget.right, v->rcTarget.bottom);
159  dshowdebug(" dwBitRate: %lu\n", v->dwBitRate);
160  dshowdebug(" dwBitErrorRate: %lu\n", v->dwBitErrorRate);
161  dshowdebug(" AvgTimePerFrame: %"PRId64"\n", v->AvgTimePerFrame);
162  dump_bih(NULL, &v->bmiHeader);
163  } else if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo2)) {
164  VIDEOINFOHEADER2 *v = (void *) type->pbFormat;
165  dshowdebug(" rcSource: left %ld top %ld right %ld bottom %ld\n",
166  v->rcSource.left, v->rcSource.top, v->rcSource.right, v->rcSource.bottom);
167  dshowdebug(" rcTarget: left %ld top %ld right %ld bottom %ld\n",
168  v->rcTarget.left, v->rcTarget.top, v->rcTarget.right, v->rcTarget.bottom);
169  dshowdebug(" dwBitRate: %lu\n", v->dwBitRate);
170  dshowdebug(" dwBitErrorRate: %lu\n", v->dwBitErrorRate);
171  dshowdebug(" AvgTimePerFrame: %"PRId64"\n", v->AvgTimePerFrame);
172  dshowdebug(" dwInterlaceFlags: %lu\n", v->dwInterlaceFlags);
173  dshowdebug(" dwCopyProtectFlags: %lu\n", v->dwCopyProtectFlags);
174  dshowdebug(" dwPictAspectRatioX: %lu\n", v->dwPictAspectRatioX);
175  dshowdebug(" dwPictAspectRatioY: %lu\n", v->dwPictAspectRatioY);
176 // dshowdebug(" dwReserved1: %lu\n", v->u.dwReserved1); /* mingw-w64 is buggy and doesn't name unnamed unions */
177  dshowdebug(" dwReserved2: %lu\n", v->dwReserved2);
178  dump_bih(NULL, &v->bmiHeader);
179  } else if (IsEqualGUID(&type->formattype, &FORMAT_WaveFormatEx)) {
180  WAVEFORMATEX *fx = (void *) type->pbFormat;
181  dshowdebug(" wFormatTag: %u\n", fx->wFormatTag);
182  dshowdebug(" nChannels: %u\n", fx->nChannels);
183  dshowdebug(" nSamplesPerSec: %lu\n", fx->nSamplesPerSec);
184  dshowdebug(" nAvgBytesPerSec: %lu\n", fx->nAvgBytesPerSec);
185  dshowdebug(" nBlockAlign: %u\n", fx->nBlockAlign);
186  dshowdebug(" wBitsPerSample: %u\n", fx->wBitsPerSample);
187  dshowdebug(" cbSize: %u\n", fx->cbSize);
188  }
189 #endif
190 }
ff_printGUID
void ff_printGUID(const GUID *g)
Definition: dshow_common.c:42
dshow_capture.h
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
dump_bih
static void dump_bih(AVFormatContext *s, BITMAPINFOHEADER *bih)
Definition: vfwcap.c:143
s
#define s(width, name)
Definition: cbs_vp9.c:257
dshowdebug
#define dshowdebug(...)
Definition: dshow_capture.h:50
g
const char * g
Definition: vf_curves.c:115
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
NULL
#define NULL
Definition: coverity.c:32
src
#define src
Definition: vp8dsp.c:254
ff_print_AUDIO_STREAM_CONFIG_CAPS
void ff_print_AUDIO_STREAM_CONFIG_CAPS(const AUDIO_STREAM_CONFIG_CAPS *caps)
Definition: dshow_common.c:115
ff_print_AM_MEDIA_TYPE
void ff_print_AM_MEDIA_TYPE(const AM_MEDIA_TYPE *type)
Definition: dshow_common.c:134
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
ff_dshow_context_class
static const AVClass ff_dshow_context_class
Definition: dshow_common.c:59
dstruct
#define dstruct(pctx, sname, var, type)
Definition: dshow_common.c:62
uint8_t
uint8_t
Definition: audio_convert.c:194
ff_dshow_context_class_ptr
const AVClass * ff_dshow_context_class_ptr
Definition: dshow_common.c:60
w
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
Definition: fate.txt:150
ff_copy_dshow_media_type
long ff_copy_dshow_media_type(AM_MEDIA_TYPE *dst, const AM_MEDIA_TYPE *src)
Definition: dshow_common.c:24
dshow_context_to_name
static const char * dshow_context_to_name(void *ptr)
Definition: dshow_common.c:55
ff_print_VIDEO_STREAM_CONFIG_CAPS
void ff_print_VIDEO_STREAM_CONFIG_CAPS(const VIDEO_STREAM_CONFIG_CAPS *caps)
Definition: dshow_common.c:85