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avdevice/decklink: new option 'format_code' to set video format by fourCC

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Signed-off-by: Matthias Hunstock <atze@fem.tu-ilmenau.de>
Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Matthias Hunstock 2017-03-20 00:16:37 +01:00 committed by Marton Balint
parent 607bffbed2
commit b3a2adaac6
6 changed files with 28 additions and 11 deletions
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14
doc/indevs.texi
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@ -233,6 +233,12 @@ Defaults to @option{false}.
If set to @option{true}, print a list of supported formats and exit.
Defaults to @option{false}.
@item format_code <FourCC>
This sets the input video format to the format given by the FourCC. To see
the supported values of your device(s) use @option{list_formats}.
Note that there is a FourCC @option{'pal '} that can also be used
as @option{pal} (3 letters).
@item bm_v210
If set to @samp{1}, video is captured in 10 bit v210 instead
of uyvy422. Not all Blackmagic devices support this option.
@ -296,21 +302,21 @@ ffmpeg -f decklink -list_formats 1 -i 'Intensity Pro'
@end example
@item
Capture video clip at 1080i50 (format 11):
Capture video clip at 1080i50:
@example
ffmpeg -f decklink -i 'Intensity Pro@@11' -acodec copy -vcodec copy output.avi
ffmpeg -format_code Hi50 -f decklink -i 'Intensity Pro' -acodec copy -vcodec copy output.avi
@end example
@item
Capture video clip at 1080i50 10 bit:
@example
ffmpeg -bm_v210 1 -f decklink -i 'UltraStudio Mini Recorder@@11' -acodec copy -vcodec copy output.avi
ffmpeg -bm_v210 1 -format_code Hi50 -f decklink -i 'UltraStudio Mini Recorder' -acodec copy -vcodec copy output.avi
@end example
@item
Capture video clip at 1080i50 with 16 audio channels:
@example
ffmpeg -channels 16 -f decklink -i 'UltraStudio Mini Recorder@@11' -acodec copy -vcodec copy output.avi
ffmpeg -channels 16 -format_code Hi50 -f decklink -i 'UltraStudio Mini Recorder' -acodec copy -vcodec copy output.avi
@end example
@end itemize

16
libavdevice/decklink_common.cpp
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@ -33,6 +33,7 @@ extern "C" {
#include "libavformat/avformat.h"
#include "libavformat/internal.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/bswap.h"
}
@ -158,8 +159,8 @@ int ff_decklink_set_format(AVFormatContext *avctx,
int i = 1;
HRESULT res;
av_log(avctx, AV_LOG_DEBUG, "Trying to find mode for frame size %dx%d, frame timing %d/%d, field order %d, direction %d, mode number %d\n",
width, height, tb_num, tb_den, field_order, direction, num);
av_log(avctx, AV_LOG_DEBUG, "Trying to find mode for frame size %dx%d, frame timing %d/%d, field order %d, direction %d, mode number %d, format code %s\n",
width, height, tb_num, tb_den, field_order, direction, num, (cctx->format_code) ? cctx->format_code : "(unset)");
if (ctx->duplex_mode) {
DECKLINK_BOOL duplex_supported = false;
@ -196,12 +197,17 @@ int ff_decklink_set_format(AVFormatContext *avctx,
return AVERROR(EIO);
}
char format_buf[] = " ";
if (cctx->format_code)
memcpy(format_buf, cctx->format_code, FFMIN(strlen(cctx->format_code), sizeof(format_buf)));
BMDDisplayMode target_mode = (BMDDisplayMode)AV_RB32(format_buf);
AVRational target_tb = av_make_q(tb_num, tb_den);
ctx->bmd_mode = bmdModeUnknown;
while ((ctx->bmd_mode == bmdModeUnknown) && itermode->Next(&mode) == S_OK) {
BMDTimeValue bmd_tb_num, bmd_tb_den;
int bmd_width = mode->GetWidth();
int bmd_height = mode->GetHeight();
BMDDisplayMode bmd_mode = mode->GetDisplayMode();
BMDFieldDominance bmd_field_dominance = mode->GetFieldDominance();
mode->GetFrameRate(&bmd_tb_num, &bmd_tb_den);
@ -210,8 +216,10 @@ int ff_decklink_set_format(AVFormatContext *avctx,
if ((bmd_width == width &&
bmd_height == height &&
!av_cmp_q(mode_tb, target_tb) &&
field_order_eq(field_order, bmd_field_dominance)) || i == num) {
ctx->bmd_mode = mode->GetDisplayMode();
field_order_eq(field_order, bmd_field_dominance))
|| i == num
|| target_mode == bmd_mode) {
ctx->bmd_mode = bmd_mode;
ctx->bmd_width = bmd_width;
ctx->bmd_height = bmd_height;
ctx->bmd_tb_den = bmd_tb_den;

1
libavdevice/decklink_common_c.h
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@ -47,6 +47,7 @@ struct decklink_cctx {
int audio_input;
int video_input;
int draw_bars;
char *format_code;
};
#endif /* AVDEVICE_DECKLINK_COMMON_C_H */

5
libavdevice/decklink_dec.cpp
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@ -539,9 +539,10 @@ av_cold int ff_decklink_read_header(AVFormatContext *avctx)
goto error;
}
if (mode_num > 0) {
if (mode_num > 0 || cctx->format_code) {
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);
av_log(avctx, AV_LOG_ERROR, "Could not set mode number %d or format code %s for %s\n",
mode_num, (cctx->format_code) ? cctx->format_code : "(unset)", fname);
ret = AVERROR(EIO);
goto error;
}

1
libavdevice/decklink_dec_c.c
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@ -31,6 +31,7 @@
static const AVOption options[] = {
{ "list_devices", "list available devices" , OFFSET(list_devices), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, DEC },
{ "list_formats", "list supported formats" , OFFSET(list_formats), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, DEC },
{ "format_code", "set format by fourcc" , OFFSET(format_code), AV_OPT_TYPE_STRING, { .str = NULL}, 0, 0, DEC },
{ "bm_v210", "v210 10 bit per channel" , OFFSET(v210), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, DEC },
{ "teletext_lines", "teletext lines bitmask", OFFSET(teletext_lines), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, 0x7ffffffffLL, DEC, "teletext_lines"},
{ "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0x7fff9fffeLL}, 0, 0, DEC, "teletext_lines"},

2
libavdevice/version.h
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@ -29,7 +29,7 @@
#define LIBAVDEVICE_VERSION_MAJOR 57
#define LIBAVDEVICE_VERSION_MINOR 3
#define LIBAVDEVICE_VERSION_MICRO 100
#define LIBAVDEVICE_VERSION_MICRO 101
#define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \
LIBAVDEVICE_VERSION_MINOR, \