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FFmpeg/libavutil/hwcontext_videotoolbox.c
Andreas Rheinhardt 3e669b24e2 avutil/hwcontext: Allocate AVHWFramesCtx jointly with its internals 
This is possible because the lifetime of these structures coincide.
It has the advantage of allowing to remove AVHWFramesInternal
from the public header; given that AVHWFramesInternal.priv is no more,
most accesses to AVHWFramesInternal are no more; indeed, the only
field accessed of it outside of hwcontext.c is the internal frame pool,
making this commit very simple.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-07 08:53:31 -03:00

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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"
#include <stdint.h>
#include <string.h>
#include <VideoToolbox/VideoToolbox.h>
#include "buffer.h"
#include "buffer_internal.h"
#include "common.h"
#include "hwcontext.h"
#include "hwcontext_internal.h"
#include "hwcontext_videotoolbox.h"
#include "mem.h"
#include "pixfmt.h"
#include "pixdesc.h"
typedef struct VTFramesContext {
/**
* The public AVVTFramesContext. See hwcontext_videotoolbox.h for it.
*/
AVVTFramesContext p;
CVPixelBufferPoolRef pool;
} VTFramesContext;
static const struct {
uint32_t cv_fmt;
bool full_range;
enum AVPixelFormat pix_fmt;
} cv_pix_fmts[] = {
{ kCVPixelFormatType_420YpCbCr8Planar, false, AV_PIX_FMT_YUV420P },
{ kCVPixelFormatType_420YpCbCr8PlanarFullRange, true, AV_PIX_FMT_YUV420P },
{ kCVPixelFormatType_422YpCbCr8, false, AV_PIX_FMT_UYVY422 },
{ kCVPixelFormatType_32BGRA, true, AV_PIX_FMT_BGRA },
#ifdef kCFCoreFoundationVersionNumber10_7
{ kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange, false, AV_PIX_FMT_NV12 },
{ kCVPixelFormatType_420YpCbCr8BiPlanarFullRange, true, AV_PIX_FMT_NV12 },
{ kCVPixelFormatType_4444AYpCbCr16, false, AV_PIX_FMT_AYUV64 },
#endif
#if HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
{ kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange, false, AV_PIX_FMT_P010 },
{ kCVPixelFormatType_420YpCbCr10BiPlanarFullRange, true, AV_PIX_FMT_P010 },
#endif
#if HAVE_KCVPIXELFORMATTYPE_422YPCBCR8BIPLANARVIDEORANGE
{ kCVPixelFormatType_422YpCbCr8BiPlanarVideoRange, false, AV_PIX_FMT_NV16 },
{ kCVPixelFormatType_422YpCbCr8BiPlanarFullRange, true, AV_PIX_FMT_NV16 },
#endif
#if HAVE_KCVPIXELFORMATTYPE_422YPCBCR10BIPLANARVIDEORANGE
{ kCVPixelFormatType_422YpCbCr10BiPlanarVideoRange, false, AV_PIX_FMT_P210 },
{ kCVPixelFormatType_422YpCbCr10BiPlanarFullRange, true, AV_PIX_FMT_P210 },
#endif
#if HAVE_KCVPIXELFORMATTYPE_422YPCBCR16BIPLANARVIDEORANGE
{ kCVPixelFormatType_422YpCbCr16BiPlanarVideoRange, false, AV_PIX_FMT_P216 },
#endif
#if HAVE_KCVPIXELFORMATTYPE_444YPCBCR8BIPLANARVIDEORANGE
{ kCVPixelFormatType_444YpCbCr8BiPlanarVideoRange, false, AV_PIX_FMT_NV24 },
{ kCVPixelFormatType_444YpCbCr8BiPlanarFullRange, true, AV_PIX_FMT_NV24 },
#endif
#if HAVE_KCVPIXELFORMATTYPE_444YPCBCR10BIPLANARVIDEORANGE
{ kCVPixelFormatType_444YpCbCr10BiPlanarVideoRange, false, AV_PIX_FMT_P410 },
{ kCVPixelFormatType_444YpCbCr10BiPlanarFullRange, true, AV_PIX_FMT_P410 },
#endif
#if HAVE_KCVPIXELFORMATTYPE_444YPCBCR16BIPLANARVIDEORANGE
{ kCVPixelFormatType_444YpCbCr16BiPlanarVideoRange, false, AV_PIX_FMT_P416 },
#endif
};
static const enum AVPixelFormat supported_formats[] = {
#ifdef kCFCoreFoundationVersionNumber10_7
AV_PIX_FMT_NV12,
AV_PIX_FMT_AYUV64,
#endif
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_UYVY422,
#if HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
AV_PIX_FMT_P010,
#endif
#if HAVE_KCVPIXELFORMATTYPE_422YPCBCR8BIPLANARVIDEORANGE
AV_PIX_FMT_NV16,
#endif
#if HAVE_KCVPIXELFORMATTYPE_422YPCBCR10BIPLANARVIDEORANGE
AV_PIX_FMT_P210,
#endif
#if HAVE_KCVPIXELFORMATTYPE_422YPCBCR16BIPLANARVIDEORANGE
AV_PIX_FMT_P216,
#endif
#if HAVE_KCVPIXELFORMATTYPE_444YPCBCR8BIPLANARVIDEORANGE
AV_PIX_FMT_NV24,
#endif
#if HAVE_KCVPIXELFORMATTYPE_444YPCBCR10BIPLANARVIDEORANGE
AV_PIX_FMT_P410,
#endif
#if HAVE_KCVPIXELFORMATTYPE_444YPCBCR16BIPLANARVIDEORANGE
AV_PIX_FMT_P416,
#endif
AV_PIX_FMT_BGRA,
};
static int vt_frames_get_constraints(AVHWDeviceContext *ctx,
const void *hwconfig,
AVHWFramesConstraints *constraints)
{
int i;
constraints->valid_sw_formats = av_malloc_array(FF_ARRAY_ELEMS(supported_formats) + 1,
sizeof(*constraints->valid_sw_formats));
if (!constraints->valid_sw_formats)
return AVERROR(ENOMEM);
for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
constraints->valid_sw_formats[i] = supported_formats[i];
constraints->valid_sw_formats[FF_ARRAY_ELEMS(supported_formats)] = AV_PIX_FMT_NONE;
constraints->valid_hw_formats = av_malloc_array(2, sizeof(*constraints->valid_hw_formats));
if (!constraints->valid_hw_formats)
return AVERROR(ENOMEM);
constraints->valid_hw_formats[0] = AV_PIX_FMT_VIDEOTOOLBOX;
constraints->valid_hw_formats[1] = AV_PIX_FMT_NONE;
return 0;
}
enum AVPixelFormat av_map_videotoolbox_format_to_pixfmt(uint32_t cv_fmt)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(cv_pix_fmts); i++) {
if (cv_pix_fmts[i].cv_fmt == cv_fmt)
return cv_pix_fmts[i].pix_fmt;
}
return AV_PIX_FMT_NONE;
}
static uint32_t vt_format_from_pixfmt(enum AVPixelFormat pix_fmt,
enum AVColorRange range)
{
for (int i = 0; i < FF_ARRAY_ELEMS(cv_pix_fmts); i++) {
if (cv_pix_fmts[i].pix_fmt == pix_fmt) {
int full_range = (range == AVCOL_RANGE_JPEG);
// Don't care if unspecified
if (range == AVCOL_RANGE_UNSPECIFIED)
return cv_pix_fmts[i].cv_fmt;
if (cv_pix_fmts[i].full_range == full_range)
return cv_pix_fmts[i].cv_fmt;
}
}
return 0;
}
uint32_t av_map_videotoolbox_format_from_pixfmt(enum AVPixelFormat pix_fmt)
{
return av_map_videotoolbox_format_from_pixfmt2(pix_fmt, false);
}
uint32_t av_map_videotoolbox_format_from_pixfmt2(enum AVPixelFormat pix_fmt, bool full_range)
{
return vt_format_from_pixfmt(pix_fmt, full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG);
}
static int vt_pool_alloc(AVHWFramesContext *ctx)
{
VTFramesContext *fctx = ctx->hwctx;
AVVTFramesContext *hw_ctx = &fctx->p;
CVReturn err;
CFNumberRef w, h, pixfmt;
uint32_t cv_pixfmt;
CFMutableDictionaryRef attributes, iosurface_properties;
attributes = CFDictionaryCreateMutable(
NULL,
2,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
cv_pixfmt = vt_format_from_pixfmt(ctx->sw_format, hw_ctx->color_range);
pixfmt = CFNumberCreate(NULL, kCFNumberSInt32Type, &cv_pixfmt);
CFDictionarySetValue(
attributes,
kCVPixelBufferPixelFormatTypeKey,
pixfmt);
CFRelease(pixfmt);
iosurface_properties = CFDictionaryCreateMutable(
NULL,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(attributes, kCVPixelBufferIOSurfacePropertiesKey, iosurface_properties);
CFRelease(iosurface_properties);
w = CFNumberCreate(NULL, kCFNumberSInt32Type, &ctx->width);
h = CFNumberCreate(NULL, kCFNumberSInt32Type, &ctx->height);
CFDictionarySetValue(attributes, kCVPixelBufferWidthKey, w);
CFDictionarySetValue(attributes, kCVPixelBufferHeightKey, h);
CFRelease(w);
CFRelease(h);
err = CVPixelBufferPoolCreate(
NULL,
NULL,
attributes,
&fctx->pool);
CFRelease(attributes);
if (err == kCVReturnSuccess)
return 0;
av_log(ctx, AV_LOG_ERROR, "Error creating CVPixelBufferPool: %d\n", err);
return AVERROR_EXTERNAL;
}
static void videotoolbox_buffer_release(void *opaque, uint8_t *data)
{
CVPixelBufferRelease((CVPixelBufferRef)data);
}
static AVBufferRef *vt_pool_alloc_buffer(void *opaque, size_t size)
{
CVPixelBufferRef pixbuf;
AVBufferRef *buf;
CVReturn err;
AVHWFramesContext *ctx = opaque;
VTFramesContext *fctx = ctx->hwctx;
err = CVPixelBufferPoolCreatePixelBuffer(
NULL,
fctx->pool,
&pixbuf
);
if (err != kCVReturnSuccess) {
av_log(ctx, AV_LOG_ERROR, "Failed to create pixel buffer from pool: %d\n", err);
return NULL;
}
buf = av_buffer_create((uint8_t *)pixbuf, size,
videotoolbox_buffer_release, NULL, 0);
if (!buf) {
CVPixelBufferRelease(pixbuf);
return NULL;
}
return buf;
}
static void vt_frames_uninit(AVHWFramesContext *ctx)
{
VTFramesContext *fctx = ctx->hwctx;
if (fctx->pool) {
CVPixelBufferPoolRelease(fctx->pool);
fctx->pool = NULL;
}
}
static int vt_frames_init(AVHWFramesContext *ctx)
{
int i, ret;
for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
if (ctx->sw_format == supported_formats[i])
break;
}
if (i == FF_ARRAY_ELEMS(supported_formats)) {
av_log(ctx, AV_LOG_ERROR, "Pixel format '%s' is not supported\n",
av_get_pix_fmt_name(ctx->sw_format));
return AVERROR(ENOSYS);
}
if (!ctx->pool) {
ffhwframesctx(ctx)->pool_internal = av_buffer_pool_init2(
sizeof(CVPixelBufferRef), ctx, vt_pool_alloc_buffer, NULL);
if (!ffhwframesctx(ctx)->pool_internal)
return AVERROR(ENOMEM);
}
ret = vt_pool_alloc(ctx);
if (ret < 0)
return ret;
return 0;
}
static int vt_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
{
frame->buf[0] = av_buffer_pool_get(ctx->pool);
if (!frame->buf[0])
return AVERROR(ENOMEM);
frame->data[3] = frame->buf[0]->data;
frame->format = AV_PIX_FMT_VIDEOTOOLBOX;
frame->width = ctx->width;
frame->height = ctx->height;
return 0;
}
static int vt_transfer_get_formats(AVHWFramesContext *ctx,
enum AVHWFrameTransferDirection dir,
enum AVPixelFormat **formats)
{
enum AVPixelFormat *fmts = av_malloc_array(2, sizeof(*fmts));
if (!fmts)
return AVERROR(ENOMEM);
fmts[0] = ctx->sw_format;
fmts[1] = AV_PIX_FMT_NONE;
*formats = fmts;
return 0;
}
static void vt_unmap(AVHWFramesContext *ctx, HWMapDescriptor *hwmap)
{
CVPixelBufferRef pixbuf = (CVPixelBufferRef)hwmap->source->data[3];
CVPixelBufferUnlockBaseAddress(pixbuf, (uintptr_t)hwmap->priv);
}
static int vt_pixbuf_set_par(void *log_ctx,
CVPixelBufferRef pixbuf, const AVFrame *src)
{
CFMutableDictionaryRef par = NULL;
CFNumberRef num = NULL, den = NULL;
AVRational avpar = src->sample_aspect_ratio;
if (avpar.num == 0)
return 0;
av_reduce(&avpar.num, &avpar.den,
avpar.num, avpar.den,
0xFFFFFFFF);
num = CFNumberCreate(kCFAllocatorDefault,
kCFNumberIntType,
&avpar.num);
den = CFNumberCreate(kCFAllocatorDefault,
kCFNumberIntType,
&avpar.den);
par = CFDictionaryCreateMutable(kCFAllocatorDefault,
2,
&kCFCopyStringDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
if (!par || !num || !den) {
if (par) CFRelease(par);
if (num) CFRelease(num);
if (den) CFRelease(den);
return AVERROR(ENOMEM);
}
CFDictionarySetValue(
par,
kCVImageBufferPixelAspectRatioHorizontalSpacingKey,
num);
CFDictionarySetValue(
par,
kCVImageBufferPixelAspectRatioVerticalSpacingKey,
den);
CVBufferSetAttachment(
pixbuf,
kCVImageBufferPixelAspectRatioKey,
par,
kCVAttachmentMode_ShouldPropagate
);
CFRelease(par);
CFRelease(num);
CFRelease(den);
return 0;
}
CFStringRef av_map_videotoolbox_chroma_loc_from_av(enum AVChromaLocation loc)
{
switch (loc) {
case AVCHROMA_LOC_LEFT:
return kCVImageBufferChromaLocation_Left;
case AVCHROMA_LOC_CENTER:
return kCVImageBufferChromaLocation_Center;
case AVCHROMA_LOC_TOP:
return kCVImageBufferChromaLocation_Top;
case AVCHROMA_LOC_BOTTOM:
return kCVImageBufferChromaLocation_Bottom;
case AVCHROMA_LOC_TOPLEFT:
return kCVImageBufferChromaLocation_TopLeft;
case AVCHROMA_LOC_BOTTOMLEFT:
return kCVImageBufferChromaLocation_BottomLeft;
default:
return NULL;
}
}
static int vt_pixbuf_set_chromaloc(void *log_ctx,
CVPixelBufferRef pixbuf, const AVFrame *src)
{
CFStringRef loc = av_map_videotoolbox_chroma_loc_from_av(src->chroma_location);
if (loc) {
CVBufferSetAttachment(
pixbuf,
kCVImageBufferChromaLocationTopFieldKey,
loc,
kCVAttachmentMode_ShouldPropagate);
}
return 0;
}
CFStringRef av_map_videotoolbox_color_matrix_from_av(enum AVColorSpace space)
{
switch (space) {
case AVCOL_SPC_BT2020_CL:
case AVCOL_SPC_BT2020_NCL:
#if HAVE_KCVIMAGEBUFFERYCBCRMATRIX_ITU_R_2020
if (__builtin_available(macOS 10.11, iOS 9, *))
return kCVImageBufferYCbCrMatrix_ITU_R_2020;
#endif
return CFSTR("ITU_R_2020");
case AVCOL_SPC_BT470BG:
case AVCOL_SPC_SMPTE170M:
return kCVImageBufferYCbCrMatrix_ITU_R_601_4;
case AVCOL_SPC_BT709:
return kCVImageBufferYCbCrMatrix_ITU_R_709_2;
case AVCOL_SPC_SMPTE240M:
return kCVImageBufferYCbCrMatrix_SMPTE_240M_1995;
default:
#if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_ITU_R_2100_HLG
if (__builtin_available(macOS 10.13, iOS 11, tvOS 11, watchOS 4, *))
return CVYCbCrMatrixGetStringForIntegerCodePoint(space);
#endif
case AVCOL_SPC_UNSPECIFIED:
return NULL;
}
}
CFStringRef av_map_videotoolbox_color_primaries_from_av(enum AVColorPrimaries pri)
{
switch (pri) {
case AVCOL_PRI_BT2020:
#if HAVE_KCVIMAGEBUFFERCOLORPRIMARIES_ITU_R_2020
if (__builtin_available(macOS 10.11, iOS 9, *))
return kCVImageBufferColorPrimaries_ITU_R_2020;
#endif
return CFSTR("ITU_R_2020");
case AVCOL_PRI_BT709:
return kCVImageBufferColorPrimaries_ITU_R_709_2;
case AVCOL_PRI_SMPTE170M:
return kCVImageBufferColorPrimaries_SMPTE_C;
case AVCOL_PRI_BT470BG:
return kCVImageBufferColorPrimaries_EBU_3213;
default:
#if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_ITU_R_2100_HLG
if (__builtin_available(macOS 10.13, iOS 11, tvOS 11, watchOS 4, *))
return CVColorPrimariesGetStringForIntegerCodePoint(pri);
#endif
case AVCOL_PRI_UNSPECIFIED:
return NULL;
}
}
CFStringRef av_map_videotoolbox_color_trc_from_av(enum AVColorTransferCharacteristic trc)
{
switch (trc) {
case AVCOL_TRC_SMPTE2084:
#if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_SMPTE_ST_2084_PQ
if (__builtin_available(macOS 10.13, iOS 11, *))
return kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ;
#endif
return CFSTR("SMPTE_ST_2084_PQ");
case AVCOL_TRC_BT2020_10:
case AVCOL_TRC_BT2020_12:
#if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_ITU_R_2020
if (__builtin_available(macOS 10.11, iOS 9, *))
return kCVImageBufferTransferFunction_ITU_R_2020;
#endif
return CFSTR("ITU_R_2020");
case AVCOL_TRC_BT709:
return kCVImageBufferTransferFunction_ITU_R_709_2;
case AVCOL_TRC_SMPTE240M:
return kCVImageBufferTransferFunction_SMPTE_240M_1995;
case AVCOL_TRC_SMPTE428:
#if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_SMPTE_ST_428_1
if (__builtin_available(macOS 10.12, iOS 10, *))
return kCVImageBufferTransferFunction_SMPTE_ST_428_1;
#endif
return CFSTR("SMPTE_ST_428_1");
case AVCOL_TRC_ARIB_STD_B67:
#if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_ITU_R_2100_HLG
if (__builtin_available(macOS 10.13, iOS 11, *))
return kCVImageBufferTransferFunction_ITU_R_2100_HLG;
#endif
return CFSTR("ITU_R_2100_HLG");
case AVCOL_TRC_GAMMA22:
return kCVImageBufferTransferFunction_UseGamma;
case AVCOL_TRC_GAMMA28:
return kCVImageBufferTransferFunction_UseGamma;
default:
#if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_ITU_R_2100_HLG
if (__builtin_available(macOS 10.13, iOS 11, tvOS 11, watchOS 4, *))
return CVTransferFunctionGetStringForIntegerCodePoint(trc);
#endif
case AVCOL_TRC_UNSPECIFIED:
return NULL;
}
}
static int vt_pixbuf_set_colorspace(void *log_ctx,
CVPixelBufferRef pixbuf, const AVFrame *src)
{
CFStringRef colormatrix = NULL, colorpri = NULL, colortrc = NULL;
Float32 gamma = 0;
colormatrix = av_map_videotoolbox_color_matrix_from_av(src->colorspace);
if (!colormatrix && src->colorspace != AVCOL_SPC_UNSPECIFIED)
av_log(log_ctx, AV_LOG_WARNING, "Color space %s is not supported.\n", av_color_space_name(src->colorspace));
colorpri = av_map_videotoolbox_color_primaries_from_av(src->color_primaries);
if (!colorpri && src->color_primaries != AVCOL_PRI_UNSPECIFIED)
av_log(log_ctx, AV_LOG_WARNING, "Color primaries %s is not supported.\n", av_color_primaries_name(src->color_primaries));
colortrc = av_map_videotoolbox_color_trc_from_av(src->color_trc);
if (!colortrc && src->color_trc != AVCOL_TRC_UNSPECIFIED)
av_log(log_ctx, AV_LOG_WARNING, "Color transfer function %s is not supported.\n", av_color_transfer_name(src->color_trc));
if (src->color_trc == AVCOL_TRC_GAMMA22)
gamma = 2.2;
else if (src->color_trc == AVCOL_TRC_GAMMA28)
gamma = 2.8;
if (colormatrix) {
CVBufferSetAttachment(
pixbuf,
kCVImageBufferYCbCrMatrixKey,
colormatrix,
kCVAttachmentMode_ShouldPropagate);
}
if (colorpri) {
CVBufferSetAttachment(
pixbuf,
kCVImageBufferColorPrimariesKey,
colorpri,
kCVAttachmentMode_ShouldPropagate);
}
if (colortrc) {
CVBufferSetAttachment(
pixbuf,
kCVImageBufferTransferFunctionKey,
colortrc,
kCVAttachmentMode_ShouldPropagate);
}
if (gamma != 0) {
CFNumberRef gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
CVBufferSetAttachment(
pixbuf,
kCVImageBufferGammaLevelKey,
gamma_level,
kCVAttachmentMode_ShouldPropagate);
CFRelease(gamma_level);
}
return 0;
}
static int vt_pixbuf_set_attachments(void *log_ctx,
CVPixelBufferRef pixbuf, const AVFrame *src)
{
int ret;
ret = vt_pixbuf_set_par(log_ctx, pixbuf, src);
if (ret < 0)
return ret;
ret = vt_pixbuf_set_colorspace(log_ctx, pixbuf, src);
if (ret < 0)
return ret;
ret = vt_pixbuf_set_chromaloc(log_ctx, pixbuf, src);
if (ret < 0)
return ret;
return 0;
}
int av_vt_pixbuf_set_attachments(void *log_ctx,
CVPixelBufferRef pixbuf, const AVFrame *src)
{
return vt_pixbuf_set_attachments(log_ctx, pixbuf, src);
}
static int vt_map_frame(AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src,
int flags)
{
CVPixelBufferRef pixbuf = (CVPixelBufferRef)src->data[3];
OSType pixel_format = CVPixelBufferGetPixelFormatType(pixbuf);
CVReturn err;
uint32_t map_flags = 0;
int ret;
int i;
enum AVPixelFormat format;
format = av_map_videotoolbox_format_to_pixfmt(pixel_format);
if (dst->format != format) {
av_log(ctx, AV_LOG_ERROR, "Unsupported or mismatching pixel format: %s\n",
av_fourcc2str(pixel_format));
return AVERROR_UNKNOWN;
}
if (CVPixelBufferGetWidth(pixbuf) != ctx->width ||
CVPixelBufferGetHeight(pixbuf) != ctx->height) {
av_log(ctx, AV_LOG_ERROR, "Inconsistent frame dimensions.\n");
return AVERROR_UNKNOWN;
}
if (flags == AV_HWFRAME_MAP_READ)
map_flags = kCVPixelBufferLock_ReadOnly;
err = CVPixelBufferLockBaseAddress(pixbuf, map_flags);
if (err != kCVReturnSuccess) {
av_log(ctx, AV_LOG_ERROR, "Error locking the pixel buffer.\n");
return AVERROR_UNKNOWN;
}
if (CVPixelBufferIsPlanar(pixbuf)) {
int planes = CVPixelBufferGetPlaneCount(pixbuf);
for (i = 0; i < planes; i++) {
dst->data[i] = CVPixelBufferGetBaseAddressOfPlane(pixbuf, i);
dst->linesize[i] = CVPixelBufferGetBytesPerRowOfPlane(pixbuf, i);
}
} else {
dst->data[0] = CVPixelBufferGetBaseAddress(pixbuf);
dst->linesize[0] = CVPixelBufferGetBytesPerRow(pixbuf);
}
ret = ff_hwframe_map_create(src->hw_frames_ctx, dst, src, vt_unmap,
(void *)(uintptr_t)map_flags);
if (ret < 0)
goto unlock;
return 0;
unlock:
CVPixelBufferUnlockBaseAddress(pixbuf, map_flags);
return ret;
}
static int vt_transfer_data_from(AVHWFramesContext *hwfc,
AVFrame *dst, const AVFrame *src)
{
AVFrame *map;
int err;
if (dst->width > hwfc->width || dst->height > hwfc->height)
return AVERROR(EINVAL);
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = dst->format;
err = vt_map_frame(hwfc, map, src, AV_HWFRAME_MAP_READ);
if (err)
goto fail;
map->width = dst->width;
map->height = dst->height;
err = av_frame_copy(dst, map);
if (err)
goto fail;
err = 0;
fail:
av_frame_free(&map);
return err;
}
static int vt_transfer_data_to(AVHWFramesContext *hwfc,
AVFrame *dst, const AVFrame *src)
{
AVFrame *map;
int err;
if (src->width > hwfc->width || src->height > hwfc->height)
return AVERROR(EINVAL);
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = src->format;
err = vt_map_frame(hwfc, map, dst, AV_HWFRAME_MAP_WRITE | AV_HWFRAME_MAP_OVERWRITE);
if (err)
goto fail;
map->width = src->width;
map->height = src->height;
err = av_frame_copy(map, src);
if (err)
goto fail;
err = vt_pixbuf_set_attachments(hwfc, (CVPixelBufferRef)dst->data[3], src);
if (err)
goto fail;
err = 0;
fail:
av_frame_free(&map);
return err;
}
static int vt_map_from(AVHWFramesContext *hwfc, AVFrame *dst,
const AVFrame *src, int flags)
{
int err;
if (dst->format == AV_PIX_FMT_NONE)
dst->format = hwfc->sw_format;
else if (dst->format != hwfc->sw_format)
return AVERROR(ENOSYS);
err = vt_map_frame(hwfc, dst, src, flags);
if (err)
return err;
dst->width = src->width;
dst->height = src->height;
err = av_frame_copy_props(dst, src);
if (err)
return err;
return 0;
}
static int vt_device_create(AVHWDeviceContext *ctx, const char *device,
AVDictionary *opts, int flags)
{
if (device && device[0]) {
av_log(ctx, AV_LOG_ERROR, "Device selection unsupported.\n");
return AVERROR_UNKNOWN;
}
return 0;
}
const HWContextType ff_hwcontext_type_videotoolbox = {
.type = AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
.name = "videotoolbox",
.frames_hwctx_size = sizeof(VTFramesContext),
.device_create = vt_device_create,
.frames_init = vt_frames_init,
.frames_get_buffer = vt_get_buffer,
.frames_get_constraints = vt_frames_get_constraints,
.frames_uninit = vt_frames_uninit,
.transfer_get_formats = vt_transfer_get_formats,
.transfer_data_to = vt_transfer_data_to,
.transfer_data_from = vt_transfer_data_from,
.map_from = vt_map_from,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_VIDEOTOOLBOX, AV_PIX_FMT_NONE },
};
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