void SvgSubprocessCharacterGenerator::run_thread( ) {
RawFrame *frame;
size_t svg_size;
uint8_t alpha;
char *svg_data;
/* fork subprocess */
do_fork( );
for (;;) {
/* request a SVG from the subprocess */
request( );
/* get the SVG */
svg_size = read_item_from_fd<uint32_t>(recv_fd);
alpha = read_item_from_fd<uint8_t>(recv_fd);
_dirty_level = read_item_from_fd<uint8_t>(recv_fd);
if (svg_size > 0) {
svg_data = read_svg(svg_size);
/* render SVG to frame */
frame = RsvgFrame::render_svg(svg_data, svg_size);
frame->set_global_alpha(alpha);
free(svg_data);
/* put frame down the pipe */
_output_pipe.put(frame);
} else {
_output_pipe.put(NULL);
}
}
}
int main( ) {
static char svg_buf[MAX_SVG];
ssize_t read_ret;
size_t read_pos = 0;
/* slurp input */
while (read_pos < MAX_SVG) {
read_ret = read(STDIN_FILENO, svg_buf + read_pos, MAX_SVG - read_pos);
if (read_ret < 0) {
perror("read");
exit(1);
} else if (read_ret == 0) {
break;
} else {
read_pos += read_ret;
}
}
/* create SVG frame */
RawFrame *svg = RsvgFrame::render_svg(svg_buf, read_pos);
/* dump raw BGRAn8 video to stdout */
fprintf(stderr, "w=%d h=%d\n", svg->w( ), svg->h( ));
svg->write_to_fd(STDOUT_FILENO);
}
int main(int argc, char **argv) {
if (argc > 1 && strcmp(argv[1], "-n") == 0) {
cpu_force_no_simd( );
}
/* Read 540p frames on stdin; dump 1080p frames on stdout... */
RawFrame frame(960, 540, RawFrame::CbYCrY8422);
ssize_t ret;
for (;;) {
ret = frame.read_from_fd(STDIN_FILENO);
if (ret < 0) {
perror("frame.read_from_fd");
exit(1);
} else if (ret == 0) {
break;
} else {
RawFrame *out = frame.convert->CbYCrY8422_scan_double( );
if (out->write_to_fd(STDOUT_FILENO) < 0) {
perror("write_to_fd");
break;
}
delete out;
}
}
}
int main(int argc, char **argv) {
int n_frames = 1000;
if (argc > 1 && strcmp(argv[1], "-n") == 0) {
cpu_force_no_simd( );
}
RawFrame frame(1920, 1080, RawFrame::CbYCrY8422);
ssize_t ret;
ret = frame.read_from_fd(STDIN_FILENO);
if (ret <= 0) {
perror("frame.read_from_fd");
exit(1);
} else {
while (n_frames != 0) {
RawFrame *out = frame.convert->BGRAn8( );
#if 0
if (out->write_to_fd(STDOUT_FILENO) < 0) {
perror("write_to_fd");
exit(1);
}
#endif
delete out;
n_frames--;
}
}
return 0;
}
int main(int argc, char **argv) {
if (argc > 1 && strcmp(argv[1], "-n") == 0) {
cpu_force_no_simd( );
}
build_lookup_tables( );
/* Read 1080p UYVY422 frames on stdin. Dump M-JPEG stream on stdout. */
RawFrame frame(720, 480, RawFrame::CbYCrY8422);
ssize_t ret;
for (;;) {
ret = frame.read_from_fd(STDIN_FILENO);
if (ret < 0) {
perror("frame.read_from_fd");
exit(1);
} else if (ret == 0) {
break;
} else {
RawFrame *out = upscale(&frame);
if (out->write_to_fd(STDOUT_FILENO) < 0) {
perror("write_to_fd");
break;
}
delete out;
}
}
}
void VideoSource::deliverFrame(const RawFrame &frame)
{
for (auto capturer : capturers_)
capturer->incomingArgbFrame(frame.getWidth(), frame.getHeight(),
frame.getBuffer().get(), frame.getFrameSizeInBytes());
// LogTrace("") << "delivered frame to " << capturers_.size() << " capturers" << endl;
}
virtual HRESULT VideoInputFrameArrived(IDeckLinkVideoInputFrame *in,
IDeckLinkAudioInputPacket *audio_in) {
RawFrame *out;
AudioPacket *audio_out;
void *data;
uint8_t *bytes;
size_t i, spitch, h;
if (in != NULL) {
if (in->GetFlags( ) & bmdFrameHasNoInputSource) {
fprintf(stderr, "DeckLink input: no signal\n");
} else {
out = new RawFrame(in->GetWidth(), in->GetHeight(), pf);
out->set_field_dominance(dominance);
spitch = in->GetRowBytes( );
h = in->GetHeight( );
in->GetBytes(&data);
bytes = (uint8_t *) data;
for (i = 0; i < h; i++) {
memcpy(out->scanline(i), bytes, out->pitch( ));
bytes += spitch;
}
if (out_pipe.can_put( )) {
out_pipe.put(out);
} else {
fprintf(stderr, "DeckLink: dropping input frame on floor\n");
delete out;
}
}
}
if (audio_in != NULL && audio_pipe != NULL) {
audio_out = new AudioPacket(audio_rate, n_channels, 2,
audio_in->GetSampleFrameCount( ));
if (audio_in->GetBytes(&data) != S_OK) {
throw std::runtime_error(
"DeckLink audio input: GetBytes failed"
);
}
memcpy(audio_out->data( ), data, audio_out->size( ));
audio_pipe->put(audio_out);
}
return S_OK;
}
int main(int argc, const char *argv[]) {
RawFrame *frame;
char *script;
int script_fd;
struct stat st;
int n_frames;
if (argc != 3) {
fprintf(stderr, "usage: %s script.js n_frames\n", argv[0]);
return 1;
}
n_frames = atoi(argv[2]);
script_fd = open(argv[1], O_RDONLY);
if (script_fd < 0) {
perror("open");
return 1;
}
if (fstat(script_fd, &st) < 0) {
perror("fstat");
return 1;
}
script = (char *) malloc(st.st_size + 1);
if (script == NULL) {
fprintf(stderr, "failed to allocate memory for script\n");
return 1;
}
memset(script, 0, st.st_size + 1);
if (read_all(script_fd, script, st.st_size) != 1) {
fprintf(stderr, "failed to read script\n");
return 1;
}
JsCharacterGeneratorScript cg_script(script, strlen(script));
for (int i = 0; i < n_frames; i++) {
frame = cg_script.render_frame( );
frame->write_tga_to_fd(STDOUT_FILENO);
delete frame;
}
return 0;
}
RawFrame *create_raw_frame_from_decklink(IDeckLinkVideoFrame *frame,
RawFrame::PixelFormat pf, bool rotate = false) {
void *dp;
RawFrame *ret = new RawFrame(
frame->GetWidth( ),
frame->GetHeight( ),
pf, frame->GetRowBytes( )
);
if (frame->GetBytes(&dp) != S_OK) {
throw std::runtime_error("Cannot get pointer to raw data");
}
if (rotate) {
flip_copy(ret, (uint8_t *) dp);
} else {
memcpy(ret->data( ), dp, ret->size( ));
}
return ret;
}
RawFrame *upscale(RawFrame *in) {
RawFrame *out = new RawFrame(1920, 1080, RawFrame::CbYCrY8422);
uint8_t *scaled_1 = new uint8_t[2*1920];
uint8_t *scaled_2 = new uint8_t[2*1920];
for (int i = 0; i < out->h( ); i++) {
int src_scan = i * 4 / 9;
uint8_t *scanline_1 = in->scanline(src_scan);
uint8_t *scanline_2;
if (src_scan + 1 < in->h( )) {
scanline_2 = in->scanline(src_scan + 1);
} else {
scanline_2 = in->scanline(src_scan);
}
upscale_scanline(scaled_1, scanline_1);
upscale_scanline(scaled_2, scanline_2);
interpolate_scanline(out->scanline(i), scaled_1, scaled_2, (4 * i) % 9);
}
return out;
}
int main(int argc, char **argv) {
if (argc > 1 && strcmp(argv[1], "-n") == 0) {
cpu_force_no_simd( );
}
/* Read 1080p UYVY422 frames on stdin. Dump M-JPEG stream on stdout. */
RawFrame frame(1920, 1080, RawFrame::CbYCrY8422);
Mjpeg422Encoder enc(1920, 1080);
Mjpeg422Decoder dec(1920, 1080);
ssize_t ret;
std::string comment;
for (;;) {
ret = frame.read_from_fd(STDIN_FILENO);
if (ret < 0) {
perror("frame.read_from_fd");
exit(1);
} else if (ret == 0) {
break;
} else {
enc.set_comment("Hello JPEG world!");
enc.encode(&frame);
RawFrame *out = dec.decode(enc.get_data( ), enc.get_data_size( ));
comment = " ";
dec.get_comment(comment);
fprintf(stderr, "comment: %s\n", comment.c_str( ));
if (out->write_to_fd(STDOUT_FILENO) < 0) {
perror("write_to_fd");
break;
}
delete out;
}
}
}
RawFrame *FreetypeFont::render_string(const char *string) {
int x;
RawFrame *ret;
FT_GlyphSlot slot = face->glyph;
FT_Bool use_kerning = FT_HAS_KERNING(face);
FT_UInt glyph_index, previous;
uint8_t *glyph_scanline;
x = 0;
previous = 0;
/* first compute the size of the resulting image */
const char *scan_ptr = string;
while (*scan_ptr != '\0') {
glyph_index = FT_Get_Char_Index(face, *scan_ptr);
scan_ptr++;
if (use_kerning && previous != 0 && glyph_index != 0) {
FT_Vector delta;
FT_Get_Kerning(face, previous, glyph_index,
FT_KERNING_DEFAULT, &delta);
x += delta.x / 64;
}
FTCHK(FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT));
x += slot->advance.x / 64;
previous = glyph_index;
}
/* initialize a raw frame */
ret = new RawFrame(x, _h, RawFrame::BGRAn8);
/* second pass: draw it */
scan_ptr = string;
int xd = 0;
previous = 0;
uint8_t *dest_scanline = ret->data( );
for (unsigned int i = 0; i < ret->size( ); i += 4) {
dest_scanline[i] = bb;
dest_scanline[i+1] = gb;
dest_scanline[i+2] = rb;
dest_scanline[i+3] = ab;
}
while (*scan_ptr != '\0') {
glyph_index = FT_Get_Char_Index(face, *scan_ptr);
scan_ptr++;
if (use_kerning && previous != 0 && glyph_index != 0) {
FT_Vector delta;
FT_Get_Kerning(face, previous, glyph_index,
FT_KERNING_DEFAULT, &delta);
xd += delta.x / 64;
}
FTCHK(FT_Load_Glyph(face, glyph_index, FT_LOAD_RENDER));
//int yd = -(slot->bitmap_top);
int yd = _baseline - slot->bitmap_top;
for (unsigned int y = 0; y < slot->bitmap.rows && yd < _h; y++, yd++) {
if (yd >= 0) {
glyph_scanline = ((uint8_t *)slot->bitmap.buffer)
+ slot->bitmap.pitch * y;
dest_scanline = ret->scanline(yd) + 4*xd;
int xd2 = xd;
for (unsigned int x = 0; x < slot->bitmap.width && xd2 < ret->w( );
x++, xd2++) {
dest_scanline[0] = (bf * glyph_scanline[x]
+ bb * (255 - glyph_scanline[x])) / 255;
dest_scanline[1] = (gf * glyph_scanline[x]
+ gb * (255 - glyph_scanline[x])) / 255;
dest_scanline[2] = (rf * glyph_scanline[x]
+ rb * (255 - glyph_scanline[x])) / 255;
dest_scanline[3] = (af * glyph_scanline[x]
+ ab * (255 - glyph_scanline[x])) / 255;
dest_scanline += 4;
}
}
}
xd += slot->advance.x / 64;
previous = glyph_index;
}
return ret;
}
void KeyerApp::run( ) {
RawFrame *frame = NULL;
RawFrame *cgout = NULL;
IOAudioPacket *audio = NULL;
if (iadp == NULL) {
throw std::runtime_error("cannot run with no input adapter");
}
if (oadps.size( ) == 0) {
throw std::runtime_error("cannot run with no output adapter");
}
if (cgs.size( ) == 0) {
fprintf(stderr,
"Keyer warning: no CGs, just passing through video\n");
}
/* main loop */
try {
iadp->start( );
for (;;) {
/* get incoming frame */
frame = iadp->output_pipe( ).get( );
if (iadp->audio_output_pipe( ) != NULL) {
audio = iadp->audio_output_pipe( )->get( );
}
clear_all_flags( ); /* we haven't keyed anything yet */
std::vector<RawFrame *> stale_frames(oadps.size( ));
for (unsigned int j = 0; j < oadps.size( ); j++) {
/* get overlay from each CG */
for (unsigned int i = 0; i < cgs.size( ); i++) {
CharacterGenerator *cg = cgs[i];
/*
* dirty_level determines which outputs will
* get keyed with this CG's output
* so skip this CG if its dirty level is higher
* than that of the output.
* (For now, the output dirty level is just the
* order in which the output was added.
*
* Also, if the key was already added in an
* earlier pass, skip it.
*/
if (cg->dirty_level( ) > j || flags[i]) {
continue;
}
#if 0
if (!cg->output_pipe( ).data_ready( )) {
if (stale_frames[i] == NULL) {
fprintf(stderr, "not keying this frame on account of staleness\n");
continue;
} else {
cgout = stale_frames[i];
}
} else {
delete stale_frames[i];
cgout = cg->output_pipe( ).get( );
stale_frames[i] = cgout;
}
#endif
if (!cg->output_pipe( ).data_ready( )) {
fprintf(stderr, "using stale frame from keyer %d\n", i);
continue;
} else {
cgout = cg->output_pipe( ).get( );
}
/*
* If no overlay is being rendered by this CG right now, the CG
* will output a NULL frame. We can safely ignore those.
*/
if (cgout != NULL && cgout->global_alpha( ) != 0) {
frame->draw->alpha_key(cg->x( ), cg->y( ),
cgout, cgout->global_alpha( ));
}
delete cgout;
/*
* mark this CG as "done" so we don't waste
* time later on subsequent passes
*/
flags[i] = true;
}
/* Lastly, send output to the output adapter. */
oadps[j]->input_pipe( ).put(frame->convert->CbYCrY8422( ));
if (oadps[j]->audio_input_pipe( ) != NULL && audio != NULL) {
oadps[j]->audio_input_pipe( )->put(audio->copy<int16_t>( ));
}
}
delete frame;
if (audio != NULL) {
delete audio;
}
}
} catch (BrokenPipe &) {
fprintf(stderr, "Unexpected component shutdown\n");
}
}
virtual HRESULT VideoInputFrameArrived(IDeckLinkVideoInputFrame *in,
IDeckLinkAudioInputPacket *audio_in) {
RawFrame *out;
IOAudioPacket *audio_out;
void *data;
if (in == NULL && audio_in == NULL) {
fprintf(stderr, "VideoInputFrameArrived got nothing??\n");
}
/* Process video frame if available. */
if (in != NULL) {
if (in->GetFlags( ) & bmdFrameHasNoInputSource) {
if (!signal_lost) {
fprintf(stderr, "DeckLink input: signal lost\n");
signal_lost = true;
}
} else {
if (signal_lost) {
fprintf(stderr, "DeckLink input: signal re-acquired\n");
signal_lost = false;
}
}
/*
* we can't actually tell the card to just not send video,
* so if video is disabled, we just ignore the video frames...
*/
if (enable_video) {
out = create_raw_frame_from_decklink(in, pf, rotate);
out->set_field_dominance(dominance);
if (out_pipe.can_put( ) && started) {
if (enable_video) {
out_pipe.put(out);
avsync++;
}
} else {
fprintf(stderr, "DeckLink: dropping input frame\n");
drop_audio++;
delete out;
}
}
}
/* Process audio, if available. */
if (audio_in != NULL && audio_pipe != NULL) {
audio_out = new IOAudioPacket(
audio_in->GetSampleFrameCount( ), n_channels
);
if (audio_in->GetBytes(&data) != S_OK) {
throw std::runtime_error(
"DeckLink audio input: GetBytes failed"
);
}
memcpy(audio_out->data( ), data, audio_out->size_bytes( ));
if (drop_audio > 0) {
fprintf(stderr, "DeckLink: dropping some audio to get back in sync\n");
delete audio_out;
drop_audio--;
} else if (audio_pipe->can_put( ) && started) {
audio_pipe->put(audio_out);
avsync--;
} else {
fprintf(stderr, "DeckLink: dropping input AudioPacket\n");
delete audio_out;
}
}
if (
(avsync > 10 || avsync < -10)
&& audio_pipe != NULL
&& enable_video
) {
fprintf(stderr, "DeckLink warning: avsync drift = %d\n", avsync);
}
return S_OK;
}
int ReplayPlayoutLavfSource::run_lavc( ) {
AVPacket packet;
int frame_finished = 0;
int audio_finished = 0;
/*
* read stream until we get a video frame,
* possibly also decoding some audio along the way
*/
while (frame_finished == 0 && audio_finished == 0 &&
av_read_frame(format_ctx, &packet) >= 0) {
if (packet.stream_index == video_stream) {
avcodec_decode_video2(video_codecctx, lavc_frame,
&frame_finished, &packet);
} else if (packet.stream_index == audio_stream) {
avcodec_decode_audio4(audio_codecctx, audio_frame,
&audio_finished, &packet);
}
av_free_packet(&packet);
}
if (frame_finished) {
/* make a RawFrame out of lavc_frame */
RawFrame *fr = new RawFrame(1920, 1080, RawFrame::CbYCrY8422);
switch (lavc_frame->format) {
case AV_PIX_FMT_YUVJ422P:
case AV_PIX_FMT_YUV422P:
fr->pack->YCbCr8P422(
lavc_frame->data[0],
lavc_frame->data[1],
lavc_frame->data[2],
lavc_frame->linesize[0],
lavc_frame->linesize[1],
lavc_frame->linesize[2]
);
break;
case AV_PIX_FMT_UYVY422:
/* copy stuff */
memcpy(fr->data( ), lavc_frame->data[0], fr->size( ));
break;
case AV_PIX_FMT_YUV422P10LE:
fr->pack->YCbCr10P422(
(uint16_t *)lavc_frame->data[0],
(uint16_t *)lavc_frame->data[1],
(uint16_t *)lavc_frame->data[2],
lavc_frame->linesize[0] / 2,
lavc_frame->linesize[1] / 2,
lavc_frame->linesize[2] / 2
);
break;
case AV_PIX_FMT_YUV420P:
fr->pack->YCbCr8P420(
lavc_frame->data[0],
lavc_frame->data[1],
lavc_frame->data[2],
lavc_frame->linesize[0],
lavc_frame->linesize[1],
lavc_frame->linesize[2]
);
break;
default:
fprintf(stderr, "ReplayPlayoutLavfSource doesn't know how "
"to handle AVPixelFormat %d\n", lavc_frame->format);
memset(fr->data( ), 128, fr->size( ));
break;
}
pending_video_frames.push_back(fr);
return 1;
} else if (audio_finished) {
PackedAudioPacket<int16_t> apkt(
audio_frame->nb_samples,
audio_codecctx->channels
);
if (audio_codecctx->sample_fmt == AV_SAMPLE_FMT_S16) {
memcpy(apkt.data( ), audio_frame->data[0], apkt.size_bytes( ));
} else if (audio_codecctx->sample_fmt == AV_SAMPLE_FMT_FLTP) {
/* convert planar float (from AAC) to signed 16-bit */
copy_fltp(audio_frame, apkt);
} else {
fprintf(stderr, "sample_fmt=%d\n", audio_codecctx->sample_fmt);
throw std::runtime_error("don't understand sample format");
}
if (audio_codecctx->sample_rate != 48000) {
throw std::runtime_error("need 48khz");
}
if (audio_codecctx->channels != 2) {
/* mix down to 2 channels if needed */
PackedAudioPacket<int16_t> *twoch = apkt.change_channels(2);
pending_audio.add_packet(twoch);
delete twoch;
} else {
pending_audio.add_packet(&apkt);
}
return 1;
} else {
return 0;
}
}