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Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
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/* | ||
* This file is part of Libav. | ||
* | ||
* Libav is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation; either | ||
* version 2.1 of the License, or (at your option) any later version. | ||
* | ||
* Libav is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* Lesser General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU Lesser General Public | ||
* License along with Libav; if not, write to the Free Software | ||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
*/ | ||
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#include "libavcodec/avcodec.h" | ||
#include "libavcodec/vda.h" | ||
#include "libavutil/imgutils.h" | ||
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#include "avconv.h" | ||
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typedef struct VDAContext { | ||
AVFrame *tmp_frame; | ||
} VDAContext; | ||
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static int vda_retrieve_data(AVCodecContext *s, AVFrame *frame) | ||
{ | ||
InputStream *ist = s->opaque; | ||
VDAContext *vda = ist->hwaccel_ctx; | ||
CVPixelBufferRef pixbuf = (CVPixelBufferRef)frame->data[3]; | ||
OSType pixel_format = CVPixelBufferGetPixelFormatType(pixbuf); | ||
CVReturn err; | ||
uint8_t *data[4] = { 0 }; | ||
int linesize[4] = { 0 }; | ||
int planes, ret, i; | ||
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av_frame_unref(vda->tmp_frame); | ||
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switch (pixel_format) { | ||
case kCVPixelFormatType_420YpCbCr8Planar: vda->tmp_frame->format = AV_PIX_FMT_YUV420P; break; | ||
case kCVPixelFormatType_422YpCbCr8: vda->tmp_frame->format = AV_PIX_FMT_UYVY422; break; | ||
default: | ||
av_log(NULL, AV_LOG_ERROR, | ||
"Unsupported pixel format: %u\n", pixel_format); | ||
return AVERROR(ENOSYS); | ||
} | ||
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vda->tmp_frame->width = frame->width; | ||
vda->tmp_frame->height = frame->height; | ||
ret = av_frame_get_buffer(vda->tmp_frame, 32); | ||
if (ret < 0) | ||
return ret; | ||
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err = CVPixelBufferLockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly); | ||
if (err != kCVReturnSuccess) { | ||
av_log(NULL, AV_LOG_ERROR, "Error locking the pixel buffer.\n"); | ||
return AVERROR_UNKNOWN; | ||
} | ||
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if (CVPixelBufferIsPlanar(pixbuf)) { | ||
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planes = CVPixelBufferGetPlaneCount(pixbuf); | ||
for (i = 0; i < planes; i++) { | ||
data[i] = CVPixelBufferGetBaseAddressOfPlane(pixbuf, i); | ||
linesize[i] = CVPixelBufferGetBytesPerRowOfPlane(pixbuf, i); | ||
} | ||
} else { | ||
data[0] = CVPixelBufferGetBaseAddress(pixbuf); | ||
linesize[0] = CVPixelBufferGetBytesPerRow(pixbuf); | ||
} | ||
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av_image_copy(vda->tmp_frame->data, vda->tmp_frame->linesize, | ||
data, linesize, vda->tmp_frame->format, | ||
frame->width, frame->height); | ||
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ret = av_frame_copy_props(vda->tmp_frame, frame); | ||
if (ret < 0) | ||
return ret; | ||
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av_frame_unref(frame); | ||
av_frame_move_ref(frame, vda->tmp_frame); | ||
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return 0; | ||
} | ||
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static void vda_uninit(AVCodecContext *s) | ||
{ | ||
InputStream *ist = s->opaque; | ||
VDAContext *vda = ist->hwaccel_ctx; | ||
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ist->hwaccel_uninit = NULL; | ||
ist->hwaccel_retrieve_data = NULL; | ||
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av_frame_free(&vda->tmp_frame); | ||
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av_vda_default_free(s); | ||
av_freep(&ist->hwaccel_ctx); | ||
} | ||
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int vda_init(AVCodecContext *s) | ||
{ | ||
InputStream *ist = s->opaque; | ||
int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR; | ||
VDAContext *vda; | ||
int ret; | ||
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vda = av_mallocz(sizeof(*vda)); | ||
if (!vda) | ||
return AVERROR(ENOMEM); | ||
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ist->hwaccel_ctx = vda; | ||
ist->hwaccel_uninit = vda_uninit; | ||
ist->hwaccel_retrieve_data = vda_retrieve_data; | ||
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vda->tmp_frame = av_frame_alloc(); | ||
if (!vda->tmp_frame) { | ||
ret = AVERROR(ENOMEM); | ||
goto fail; | ||
} | ||
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ret = av_vda_default_init(s); | ||
if (ret < 0) { | ||
av_log(NULL, loglevel, "Error creating VDA decoder.\n"); | ||
goto fail; | ||
} | ||
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return 0; | ||
fail: | ||
vda_uninit(s); | ||
return ret; | ||
} |
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