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Code Issues Releases Activity

vda: use fast reallocation.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Sebastien Zwickert 2011-11-11 03:38:13 +01:00 committed by Michael Niedermayer
parent 7437db84a9
commit 89d7f92661
3 changed files with 40 additions and 24 deletions
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6
libavcodec/vda.c
View File

@ -168,6 +168,9 @@ int ff_vda_create_decoder(struct vda_context *vda_ctx,
CFMutableDictionaryRef io_surface_properties;
CFNumberRef cv_pix_fmt;
vda_ctx->bitstream = NULL;
vda_ctx->ref_size = 0;
if (av_lockmgr_register(vda_lock_operation))
return -1;
@ -239,6 +242,9 @@ int ff_vda_destroy_decoder(struct vda_context *vda_ctx)
if (vda_ctx->queue_mutex != NULL)
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_DESTROY);
if (vda_ctx->bitstream)
av_freep(&vda_ctx->bitstream);
if (kVDADecoderNoErr != status)
return status;

24
libavcodec/vda.h
View File

@ -129,6 +129,30 @@ struct vda_context {
* - decoding: Set/Unset by user.
*/
OSType cv_pix_fmt_type;
/**
* The current bitstream buffer.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
uint8_t *bitstream;
/**
* The current size of the bitstream.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
int bitstream_size;
/**
* The reference size used for fast reallocation.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
int ref_size;
};
/** Creates the video decoder. */

34
libavcodec/vda_h264.c
View File

@ -22,25 +22,16 @@
#include "vda_internal.h"
/* This structure is used to store the bitstream of the current frame. */
struct vda_picture_context {
uint8_t *bitstream;
int bitstream_size;
};
static int start_frame(AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
const H264Context *h = avctx->priv_data;
struct vda_context *vda_ctx = avctx->hwaccel_context;
struct vda_picture_context *pic_ctx = h->s.current_picture_ptr->f.hwaccel_picture_private;
if (!vda_ctx->decoder)
return -1;
pic_ctx->bitstream = NULL;
pic_ctx->bitstream_size = 0;
vda_ctx->bitstream_size = 0;
return 0;
}
@ -49,24 +40,22 @@ static int decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
H264Context *h = avctx->priv_data;
struct vda_context *vda_ctx = avctx->hwaccel_context;
struct vda_picture_context *pic_ctx = h->s.current_picture_ptr->f.hwaccel_picture_private;
void *tmp;
if (!vda_ctx->decoder)
return -1;
tmp = av_realloc(pic_ctx->bitstream, pic_ctx->bitstream_size+size+4);
tmp = av_fast_realloc(vda_ctx->bitstream, &vda_ctx->ref_size, vda_ctx->bitstream_size+size+4);
if (!tmp)
return AVERROR(ENOMEM);
pic_ctx->bitstream = tmp;
vda_ctx->bitstream = tmp;
AV_WB32(pic_ctx->bitstream+pic_ctx->bitstream_size, size);
memcpy(pic_ctx->bitstream+pic_ctx->bitstream_size+4, buffer, size);
AV_WB32(vda_ctx->bitstream+vda_ctx->bitstream_size, size);
memcpy(vda_ctx->bitstream+vda_ctx->bitstream_size+4, buffer, size);
pic_ctx->bitstream_size += size + 4;
vda_ctx->bitstream_size += size + 4;
return 0;
}
@ -75,22 +64,19 @@ static int end_frame(AVCodecContext *avctx)
{
H264Context *h = avctx->priv_data;
struct vda_context *vda_ctx = avctx->hwaccel_context;
struct vda_picture_context *pic_ctx = h->s.current_picture_ptr->f.hwaccel_picture_private;
AVFrame *frame = (AVFrame*)h->s.current_picture_ptr;
int status;
if (!vda_ctx->decoder || !pic_ctx->bitstream)
if (!vda_ctx->decoder || !vda_ctx->bitstream)
return -1;
status = ff_vda_decoder_decode(vda_ctx, pic_ctx->bitstream,
pic_ctx->bitstream_size,
status = ff_vda_decoder_decode(vda_ctx, vda_ctx->bitstream,
vda_ctx->bitstream_size,
frame->reordered_opaque);
if (status)
av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%d)\n", status);
av_freep(&pic_ctx->bitstream);
return status;
}
@ -103,5 +89,5 @@ AVHWAccel ff_h264_vda_hwaccel = {
.start_frame = start_frame,
.decode_slice = decode_slice,
.end_frame = end_frame,
.priv_data_size = sizeof(struct vda_picture_context),
.priv_data_size = 0,
};