本文整理汇总了C++中AVCodec::decode方法的典型用法代码示例。如果您正苦于以下问题：C++ AVCodec::decode方法的具体用法？C++ AVCodec::decode怎么用？C++ AVCodec::decode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::decode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: vdadec_decode
static int vdadec_decode(AVCodecContext *avctx,
void *data, int *got_frame, AVPacket *avpkt)
{
VDADecoderContext *ctx = avctx->priv_data;
AVFrame *pic = data;
int ret;
set_context(avctx);
ret = ff_h264_decoder.decode(avctx, data, got_frame, avpkt);
restore_context(avctx);
if (*got_frame) {
AVBufferRef *buffer = pic->buf[0];
VDABufferContext *context = av_buffer_get_opaque(buffer);
CVPixelBufferRef cv_buffer = (CVPixelBufferRef)pic->data[3];
CVPixelBufferRetain(cv_buffer);
CVPixelBufferLockBaseAddress(cv_buffer, 0);
context->cv_buffer = cv_buffer;
pic->format = ctx->pix_fmt;
if (CVPixelBufferIsPlanar(cv_buffer)) {
int i, count = CVPixelBufferGetPlaneCount(cv_buffer);
av_assert0(count < 4);
for (i = 0; i < count; i++) {
pic->data[i] = CVPixelBufferGetBaseAddressOfPlane(cv_buffer, i);
pic->linesize[i] = CVPixelBufferGetBytesPerRowOfPlane(cv_buffer, i);
}
} else {
pic->data[0] = CVPixelBufferGetBaseAddress(cv_buffer);
pic->linesize[0] = CVPixelBufferGetBytesPerRow(cv_buffer);
}
}
avctx->pix_fmt = ctx->pix_fmt;
return ret;
}示例2: while
/**
* Codec worker thread.
*
* Automatically calls ff_thread_finish_setup() if the codec does
* not provide an update_thread_context method, or if the codec returns
* before calling it.
*/
static attribute_align_arg void *frame_worker_thread(void *arg)
{
PerThreadContext *p = arg;
FrameThreadContext *fctx = p->parent;
AVCodecContext *avctx = p->avctx;
AVCodec *codec = avctx->codec;
while (1) {
int i;
if (p->state == STATE_INPUT_READY && !fctx->die) {
pthread_mutex_lock(&p->mutex);
while (p->state == STATE_INPUT_READY && !fctx->die)
pthread_cond_wait(&p->input_cond, &p->mutex);
pthread_mutex_unlock(&p->mutex);
}
if (fctx->die) break;
if (!codec->update_thread_context && (avctx->thread_safe_callbacks || avctx->get_buffer == avcodec_default_get_buffer))
ff_thread_finish_setup(avctx);
pthread_mutex_lock(&p->mutex);
avcodec_get_frame_defaults(&p->frame);
p->got_frame = 0;
p->result = codec->decode(avctx, &p->frame, &p->got_frame, &p->avpkt);
if (p->state == STATE_SETTING_UP) ff_thread_finish_setup(avctx);
p->state = STATE_INPUT_READY;
pthread_mutex_lock(&p->progress_mutex);
for (i = 0; i < MAX_BUFFERS; i++)
if (p->progress_used[i] && (p->got_frame || p->result<0 || avctx->codec_id != CODEC_ID_H264)) {
p->progress[i][0] = INT_MAX;
p->progress[i][1] = INT_MAX;
}
pthread_cond_broadcast(&p->progress_cond);
pthread_cond_signal(&p->output_cond);
pthread_mutex_unlock(&p->progress_mutex);
pthread_mutex_unlock(&p->mutex);
}
return NULL;
}示例3: while
/**
* Codec worker thread.
*
* Automatically calls ff_thread_finish_setup() if the codec does
* not provide an update_thread_context method, or if the codec returns
* before calling it.
*/
static attribute_align_arg void *frame_worker_thread(void *arg)
{
PerThreadContext *p = arg;
FrameThreadContext *fctx = p->parent;
AVCodecContext *avctx = p->avctx;
AVCodec *codec = avctx->codec;
while (1) {
if (p->state == STATE_INPUT_READY && !fctx->die) {
pthread_mutex_lock(&p->mutex);
while (p->state == STATE_INPUT_READY && !fctx->die)
pthread_cond_wait(&p->input_cond, &p->mutex);
pthread_mutex_unlock(&p->mutex);
}
if (fctx->die) break;
if (!codec->update_thread_context && avctx->thread_safe_callbacks)
ff_thread_finish_setup(avctx);
pthread_mutex_lock(&p->mutex);
avcodec_get_frame_defaults(&p->frame);
p->got_frame = 0;
p->result = codec->decode(avctx, &p->frame, &p->got_frame, &p->avpkt);
if (p->state == STATE_SETTING_UP) ff_thread_finish_setup(avctx);
p->state = STATE_INPUT_READY;
pthread_mutex_lock(&p->progress_mutex);
pthread_cond_signal(&p->output_cond);
pthread_mutex_unlock(&p->progress_mutex);
pthread_mutex_unlock(&p->mutex);
}
return NULL;
}