本文整理汇总了C++中AVCodec::init方法的典型用法代码示例。如果您正苦于以下问题：C++ AVCodec::init方法的具体用法？C++ AVCodec::init怎么用？C++ AVCodec::init使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AVCodec的用法示例。
在下文中一共展示了AVCodec::init方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: memset
static av_cold int vdadec_init(AVCodecContext *avctx)
{
VDADecoderContext *ctx = avctx->priv_data;
struct vda_context *vda_ctx = &ctx->vda_ctx;
OSStatus status;
int ret, i;
ctx->h264_initialized = 0;
/* init pix_fmts of codec */
if (!ff_h264_vda_decoder.pix_fmts) {
if (kCFCoreFoundationVersionNumber < kCFCoreFoundationVersionNumber10_7)
ff_h264_vda_decoder.pix_fmts = vda_pixfmts_prior_10_7;
else
ff_h264_vda_decoder.pix_fmts = vda_pixfmts;
}
/* init vda */
memset(vda_ctx, 0, sizeof(struct vda_context));
vda_ctx->width = avctx->width;
vda_ctx->height = avctx->height;
vda_ctx->format = 'avc1';
vda_ctx->use_sync_decoding = 1;
vda_ctx->use_ref_buffer = 1;
ctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts);
switch (ctx->pix_fmt) {
case AV_PIX_FMT_UYVY422:
vda_ctx->cv_pix_fmt_type = '2vuy';
break;
case AV_PIX_FMT_YUYV422:
vda_ctx->cv_pix_fmt_type = 'yuvs';
break;
case AV_PIX_FMT_NV12:
vda_ctx->cv_pix_fmt_type = '420v';
break;
case AV_PIX_FMT_YUV420P:
vda_ctx->cv_pix_fmt_type = 'y420';
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format: %d\n", avctx->pix_fmt);
goto failed;
}
status = ff_vda_create_decoder(vda_ctx,
avctx->extradata, avctx->extradata_size);
if (status != kVDADecoderNoErr) {
av_log(avctx, AV_LOG_ERROR,
"Failed to init VDA decoder: %d.\n", status);
goto failed;
}
/* init H.264 decoder */
set_context(avctx);
ret = ff_h264_decoder.init(avctx);
restore_context(avctx);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to open H.264 decoder.\n");
goto failed;
}
ctx->h264_initialized = 1;
for (i = 0; i < MAX_SPS_COUNT; i++) {
const SPS *sps = (const SPS*)ctx->h264ctx.ps.sps_list[i]->data;
if (sps && (sps->bit_depth_luma != 8 ||
sps->chroma_format_idc == 2 ||
sps->chroma_format_idc == 3)) {
av_log(avctx, AV_LOG_ERROR, "Format is not supported.\n");
goto failed;
}
}
return 0;
failed:
vdadec_close(avctx);
return -1;
}示例2: frame_thread_init
static int frame_thread_init(AVCodecContext *avctx)
{
int thread_count = avctx->thread_count;
AVCodec *codec = avctx->codec;
AVCodecContext *src = avctx;
FrameThreadContext *fctx;
int i, err = 0;
if (!thread_count) {
int nb_cpus = get_logical_cpus(avctx);
if ((avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) || avctx->debug_mv)
nb_cpus = 1;
// use number of cores + 1 as thread count if there is more than one
if (nb_cpus > 1)
thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS);
else
thread_count = avctx->thread_count = 1;
}
if (thread_count <= 1) {
avctx->active_thread_type = 0;
return 0;
}
avctx->thread_opaque = fctx = av_mallocz(sizeof(FrameThreadContext));
fctx->threads = av_mallocz(sizeof(PerThreadContext) * thread_count);
pthread_mutex_init(&fctx->buffer_mutex, NULL);
fctx->delaying = 1;
for (i = 0; i < thread_count; i++) {
AVCodecContext *copy = av_malloc(sizeof(AVCodecContext));
PerThreadContext *p = &fctx->threads[i];
pthread_mutex_init(&p->mutex, NULL);
pthread_mutex_init(&p->progress_mutex, NULL);
pthread_cond_init(&p->input_cond, NULL);
pthread_cond_init(&p->progress_cond, NULL);
pthread_cond_init(&p->output_cond, NULL);
p->parent = fctx;
p->avctx = copy;
if (!copy) {
err = AVERROR(ENOMEM);
goto error;
}
*copy = *src;
copy->thread_opaque = p;
copy->pkt = &p->avpkt;
if (!i) {
src = copy;
if (codec->init)
err = codec->init(copy);
update_context_from_thread(avctx, copy, 1);
} else {
copy->priv_data = av_malloc(codec->priv_data_size);
if (!copy->priv_data) {
err = AVERROR(ENOMEM);
goto error;
}
memcpy(copy->priv_data, src->priv_data, codec->priv_data_size);
copy->internal = av_malloc(sizeof(AVCodecInternal));
if (!copy->internal) {
err = AVERROR(ENOMEM);
goto error;
}
*copy->internal = *src->internal;
copy->internal->is_copy = 1;
if (codec->init_thread_copy)
err = codec->init_thread_copy(copy);
}
if (err) goto error;
err = AVERROR(pthread_create(&p->thread, NULL, frame_worker_thread, p));
p->thread_init= !err;
if(!p->thread_init)
goto error;
}
return 0;
error:
frame_thread_free(avctx, i+1);
return err;
}示例3: memset
static av_cold int vdadec_init(AVCodecContext *avctx)
{
VDADecoderContext *ctx = avctx->priv_data;
struct vda_context *vda_ctx = &ctx->vda_ctx;
OSStatus status;
int ret;
ctx->h264_initialized = 0;
/* init pix_fmts of codec */
if (!ff_h264_vda_decoder.pix_fmts) {
if (kCFCoreFoundationVersionNumber < kCFCoreFoundationVersionNumber10_7)
ff_h264_vda_decoder.pix_fmts = vda_pixfmts_prior_10_7;
else
ff_h264_vda_decoder.pix_fmts = vda_pixfmts;
}
/* init vda */
memset(vda_ctx, 0, sizeof(struct vda_context));
vda_ctx->width = avctx->width;
vda_ctx->height = avctx->height;
vda_ctx->format = 'avc1';
vda_ctx->use_sync_decoding = 1;
vda_ctx->use_ref_buffer = 1;
ctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts);
switch (ctx->pix_fmt) {
case AV_PIX_FMT_UYVY422:
vda_ctx->cv_pix_fmt_type = '2vuy';
break;
case AV_PIX_FMT_YUYV422:
vda_ctx->cv_pix_fmt_type = 'yuvs';
break;
case AV_PIX_FMT_NV12:
vda_ctx->cv_pix_fmt_type = '420v';
break;
case AV_PIX_FMT_YUV420P:
vda_ctx->cv_pix_fmt_type = 'y420';
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format: %d\n", avctx->pix_fmt);
goto failed;
}
status = ff_vda_create_decoder(vda_ctx,
avctx->extradata, avctx->extradata_size);
if (status != kVDADecoderNoErr) {
av_log(avctx, AV_LOG_ERROR,
"Failed to init VDA decoder: %d.\n", status);
goto failed;
}
avctx->hwaccel_context = vda_ctx;
/* changes callback functions */
avctx->get_format = get_format;
avctx->get_buffer2 = get_buffer2;
#if FF_API_GET_BUFFER
// force the old get_buffer to be empty
avctx->get_buffer = NULL;
#endif
/* init H.264 decoder */
ret = ff_h264_decoder.init(avctx);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to open H.264 decoder.\n");
goto failed;
}
ctx->h264_initialized = 1;
return 0;
failed:
vdadec_close(avctx);
return -1;
}