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Autres articles (100)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
Sur d’autres sites (9842)
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Rendering Bitmap using ANativeWindow
19 février 2016, par William SeemannI’m decoding a video frame and trying to render is using Android’s ANativeWindow API in conjunction with a SurfaceView. I know I’m decoding the frame successfully because my demo application returns the decoded (and re-encoded) frame as a bitmap and displays it in an ImageView (bottom image). However, when trying to draw the decoded frame to a SurfaceView I’m getting garbage output (top image). Can someone explain why ?
const int TARGET_IMAGE_FORMAT = AV_PIX_FMT_RGBA;
const int TARGET_IMAGE_CODEC = AV_CODEC_ID_PNG;
void convert_image(State *state, AVCodecContext *pCodecCtx, AVFrame *pFrame, AVPacket *avpkt, int *got_packet_ptr, int width, int height) {
AVCodecContext *codecCtx;
AVCodec *codec;
AVFrame *frame;
*got_packet_ptr = 0;
if (width == -1) {
width = pCodecCtx->width;
}
if (height == -1) {
height = pCodecCtx->height;
}
codec = avcodec_find_encoder(TARGET_IMAGE_CODEC);
if (!codec) {
printf("avcodec_find_decoder() failed to find decoder\n");
goto fail;
}
codecCtx = avcodec_alloc_context3(codec);
if (!codecCtx) {
printf("avcodec_alloc_context3 failed\n");
goto fail;
}
codecCtx->bit_rate = pCodecCtx->bit_rate;
//codecCtx->width = pCodecCtx->width;
//codecCtx->height = pCodecCtx->height;
codecCtx->width = width;
codecCtx->height = height;
codecCtx->pix_fmt = TARGET_IMAGE_FORMAT;
codecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
codecCtx->time_base.num = pCodecCtx->time_base.num;
codecCtx->time_base.den = pCodecCtx->time_base.den;
if (!codec || avcodec_open2(codecCtx, codec, NULL) < 0) {
printf("avcodec_open2() failed\n");
goto fail;
}
frame = av_frame_alloc();
if (!frame) {
goto fail;
}
// Determine required buffer size and allocate buffer
int numBytes = avpicture_get_size(TARGET_IMAGE_FORMAT, codecCtx->width, codecCtx->height);
void * buffer = (uint8_t *) av_malloc(numBytes * sizeof(uint8_t));
printf("wqwq %d\n", numBytes);
avpicture_fill(((AVPicture *)frame),
buffer,
TARGET_IMAGE_FORMAT,
codecCtx->width,
codecCtx->height);
avpicture_alloc(((AVPicture *)frame),
TARGET_IMAGE_FORMAT,
codecCtx->width,
codecCtx->height);
struct SwsContext *scalerCtx = sws_getContext(pCodecCtx->width,
pCodecCtx->height,
pCodecCtx->pix_fmt,
//pCodecCtx->width,
//pCodecCtx->height,
width,
height,
TARGET_IMAGE_FORMAT,
SWS_FAST_BILINEAR, 0, 0, 0);
if (!scalerCtx) {
printf("sws_getContext() failed\n");
goto fail;
}
sws_scale(scalerCtx,
(const uint8_t * const *) pFrame->data,
pFrame->linesize,
0,
pFrame->height,
frame->data,
frame->linesize);
int ret = avcodec_encode_video2(codecCtx, avpkt, frame, got_packet_ptr);
// code to draw the re-encoded frame on the surface view
if (state->native_window) {
ANativeWindow_Buffer windowBuffer;
if (ANativeWindow_lock(state->native_window, &windowBuffer, NULL) == 0) {
memcpy(windowBuffer.bits, avpkt->data, windowBuffer.width * windowBuffer.height * 4);
ANativeWindow_unlockAndPost(state->native_window);
}
}
if (ret < 0) {
*got_packet_ptr = 0;
}
fail:
av_free(frame);
free(buffer);
if (codecCtx) {
avcodec_close(codecCtx);
av_free(codecCtx);
}
if (scalerCtx) {
sws_freeContext(scalerCtx);
}
if (ret < 0 || !*got_packet_ptr) {
av_free_packet(avpkt);
}
}
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x86inc : Add debug symbols indicating sizes of compiled functions
18 janvier 2016, par Geza Lorex86inc : Add debug symbols indicating sizes of compiled functions
Some debuggers/profilers use this metadata to determine which function a
given instruction is in ; without it they get can confused by local labels
(if you haven’t stripped those). On the other hand, some tools are still
confused even with this metadata. e.g. this fixes `gdb`, but not `perf`.Currently only implemented for ELF.
Signed-off-by : Anton Khirnov <anton@khirnov.net>
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x86inc : Add debug symbols indicating sizes of compiled functions
12 octobre 2015, par Geza Lorex86inc : Add debug symbols indicating sizes of compiled functions
Some debuggers/profilers use this metadata to determine which function a
given instruction is in ; without it they get can confused by local labels
(if you haven’t stripped those). On the other hand, some tools are still
confused even with this metadata. e.g. this fixes `gdb`, but not `perf`.Currently only implemented for ELF.
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