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- /*
- * This file is part of FFmpeg.
- *
- * FFmpeg 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.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
- #include "config.h"
-
- #if HAVE_UTGETOSTYPEFROMSTRING
- #include <CoreServices/CoreServices.h>
- #endif
-
- #include "libavcodec/avcodec.h"
- #include "libavcodec/videotoolbox.h"
- #include "libavutil/imgutils.h"
- #include "ffmpeg.h"
-
- typedef struct VTContext {
- AVFrame *tmp_frame;
- } VTContext;
-
- char *videotoolbox_pixfmt;
-
- static int videotoolbox_retrieve_data(AVCodecContext *s, AVFrame *frame)
- {
- InputStream *ist = s->opaque;
- VTContext *vt = 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;
-
- av_frame_unref(vt->tmp_frame);
-
- switch (pixel_format) {
- case kCVPixelFormatType_420YpCbCr8Planar: vt->tmp_frame->format = AV_PIX_FMT_YUV420P; break;
- case kCVPixelFormatType_422YpCbCr8: vt->tmp_frame->format = AV_PIX_FMT_UYVY422; break;
- case kCVPixelFormatType_32BGRA: vt->tmp_frame->format = AV_PIX_FMT_BGRA; break;
- #ifdef kCFCoreFoundationVersionNumber10_7
- case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
- case kCVPixelFormatType_420YpCbCr8BiPlanarFullRange: vt->tmp_frame->format = AV_PIX_FMT_NV12; break;
- #endif
- #if HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
- case kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange:
- case kCVPixelFormatType_420YpCbCr10BiPlanarFullRange: vt->tmp_frame->format = AV_PIX_FMT_P010; break;
- #endif
- default:
- av_log(NULL, AV_LOG_ERROR,
- "%s: Unsupported pixel format: %s\n",
- av_fourcc2str(s->codec_tag), videotoolbox_pixfmt);
- return AVERROR(ENOSYS);
- }
-
- vt->tmp_frame->width = frame->width;
- vt->tmp_frame->height = frame->height;
- ret = av_frame_get_buffer(vt->tmp_frame, 0);
- if (ret < 0)
- return ret;
-
- err = CVPixelBufferLockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly);
- if (err != kCVReturnSuccess) {
- av_log(NULL, AV_LOG_ERROR, "Error locking the pixel buffer.\n");
- return AVERROR_UNKNOWN;
- }
-
- if (CVPixelBufferIsPlanar(pixbuf)) {
-
- 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);
- }
-
- av_image_copy(vt->tmp_frame->data, vt->tmp_frame->linesize,
- (const uint8_t **)data, linesize, vt->tmp_frame->format,
- frame->width, frame->height);
-
- ret = av_frame_copy_props(vt->tmp_frame, frame);
- CVPixelBufferUnlockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly);
- if (ret < 0)
- return ret;
-
- av_frame_unref(frame);
- av_frame_move_ref(frame, vt->tmp_frame);
-
- return 0;
- }
-
- static void videotoolbox_uninit(AVCodecContext *s)
- {
- InputStream *ist = s->opaque;
- VTContext *vt = ist->hwaccel_ctx;
-
- ist->hwaccel_uninit = NULL;
- ist->hwaccel_retrieve_data = NULL;
-
- av_frame_free(&vt->tmp_frame);
-
- av_videotoolbox_default_free(s);
- av_freep(&ist->hwaccel_ctx);
- }
-
- int videotoolbox_init(AVCodecContext *s)
- {
- InputStream *ist = s->opaque;
- int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
- int ret = 0;
- VTContext *vt;
-
- vt = av_mallocz(sizeof(*vt));
- if (!vt)
- return AVERROR(ENOMEM);
-
- ist->hwaccel_ctx = vt;
- ist->hwaccel_uninit = videotoolbox_uninit;
- ist->hwaccel_retrieve_data = videotoolbox_retrieve_data;
-
- vt->tmp_frame = av_frame_alloc();
- if (!vt->tmp_frame) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
-
- // TODO: reindent
- if (!videotoolbox_pixfmt) {
- ret = av_videotoolbox_default_init(s);
- } else {
- AVVideotoolboxContext *vtctx = av_videotoolbox_alloc_context();
- CFStringRef pixfmt_str = CFStringCreateWithCString(kCFAllocatorDefault,
- videotoolbox_pixfmt,
- kCFStringEncodingUTF8);
- #if HAVE_UTGETOSTYPEFROMSTRING
- vtctx->cv_pix_fmt_type = UTGetOSTypeFromString(pixfmt_str);
- #else
- av_log(s, loglevel, "UTGetOSTypeFromString() is not available "
- "on this platform, %s pixel format can not be honored from "
- "the command line\n", videotoolbox_pixfmt);
- #endif
- ret = av_videotoolbox_default_init2(s, vtctx);
- CFRelease(pixfmt_str);
- }
- if (ret < 0) {
- av_log(NULL, loglevel, "Error creating Videotoolbox decoder.\n");
- goto fail;
- }
-
- return 0;
- fail:
- videotoolbox_uninit(s);
- return ret;
- }
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