[FFmpeg-devel] [PATCH 2/2] hwaccel: add VideoToolbox support.
Sebastien Zwickert
dilaroga at gmail.com
Sun Sep 16 20:38:05 CEST 2012
---
Changelog | 1 +
MAINTAINERS | 1 +
configure | 12 ++
libavcodec/Makefile | 7 +
libavcodec/allcodecs.c | 4 +
libavcodec/h264.c | 1 +
libavcodec/mpeg12.c | 3 +
libavcodec/mpegvideo.c | 1 +
libavcodec/vt.c | 365 ++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/vt.h | 186 +++++++++++++++++++++++
libavcodec/vt_h264.c | 79 ++++++++++
libavcodec/vt_internal.h | 42 ++++++
libavcodec/vt_mpeg2.c | 62 ++++++++
libavcodec/vt_mpeg4.c | 77 ++++++++++
libavutil/pixdesc.c | 6 +
libavutil/pixfmt.h | 1 +
16 files changed, 848 insertions(+)
create mode 100644 libavcodec/vt.c
create mode 100644 libavcodec/vt.h
create mode 100644 libavcodec/vt_h264.c
create mode 100644 libavcodec/vt_internal.h
create mode 100644 libavcodec/vt_mpeg2.c
create mode 100644 libavcodec/vt_mpeg4.c
diff --git a/Changelog b/Changelog
index 21aac7d..facef77 100644
--- a/Changelog
+++ b/Changelog
@@ -61,6 +61,7 @@ version next:
- decimate filter ported from MPlayer
- RTP depacketization of JPEG
- Smooth Streaming live segmenter muxer
+- OS X VideoToolbox (VT) support
version 0.11:
diff --git a/MAINTAINERS b/MAINTAINERS
index 1860b6e..6233b1c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -257,6 +257,7 @@ Hardware acceleration:
libstagefright.cpp Mohamed Naufal
vaapi* Gwenole Beauchesne
vda* Sebastien Zwickert
+ vt* Sebastien Zwickert
vdpau* Carl Eugen Hoyos
diff --git a/configure b/configure
index 4ecb116..c0c3d90 100755
--- a/configure
+++ b/configure
@@ -133,6 +133,7 @@ Component options:
--enable-dxva2 enable DXVA2 code
--enable-vaapi enable VAAPI code [autodetect]
--enable-vda enable VDA code [autodetect]
+ --enable-videotoolbox enable VideoToolbox code [autodetect]
--enable-vdpau enable VDPAU code [autodetect]
Individual component options:
@@ -1174,6 +1175,7 @@ CONFIG_LIST="
vda
vdpau
version3
+ videotoolbox
xmm_clobber_test
x11grab
zlib
@@ -1606,6 +1608,7 @@ h261_encoder_select="aandcttables mpegvideoenc"
h263_decoder_select="error_resilience h263_parser mpegvideo"
h263_encoder_select="aandcttables error_resilience mpegvideoenc"
h263_vaapi_hwaccel_select="vaapi h263_decoder"
+h263_vt_hwaccel_select="videotoolbox h263_decoder"
h263i_decoder_select="h263_decoder"
h263p_encoder_select="h263_encoder"
h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
@@ -1617,6 +1620,7 @@ h264_vda_decoder_select="vda h264_parser h264_decoder"
h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
h264_vda_hwaccel_select="vda h264_decoder"
h264_vdpau_decoder_select="vdpau h264_decoder"
+h264_vt_hwaccel_select="videotoolbox h264_decoder"
huffyuv_encoder_select="huffman"
iac_decoder_select="fft mdct sinewin"
imc_decoder_select="fft mdct sinewin"
@@ -1651,6 +1655,7 @@ mpeg2_dxva2_hwaccel_deps="dxva2api_h"
mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
+mpeg2_vt_hwaccel_select="videotoolbox mpeg2video_decoder"
mpeg2video_decoder_select="error_resilience mpegvideo"
mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
mpeg4_crystalhd_decoder_select="crystalhd"
@@ -1658,6 +1663,7 @@ mpeg4_decoder_select="h263_decoder mpeg4video_parser"
mpeg4_encoder_select="h263_encoder"
mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
+mpeg4_vt_hwaccel_select="videotoolbox mpeg4_decoder"
msmpeg4_crystalhd_decoder_select="crystalhd"
msmpeg4v1_decoder_select="h263_decoder"
msmpeg4v1_encoder_select="h263_encoder"
@@ -1739,6 +1745,7 @@ crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
vaapi_deps="va_va_h"
vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
+videotoolbox_deps="VideoToolbox_VideoToolbox_h avformat"
# parsers
h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
@@ -3538,6 +3545,11 @@ if ! disabled vda; then
fi
fi
+# check for VideoToolbox header
+if ! disabled videotoolbox && check_header VideoToolbox/VideoToolbox.h; then
+ enable videotoolbox && add_extralibs -framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore
+fi
+
if ! disabled w32threads && ! enabled pthreads; then
check_func _beginthreadex && enable w32threads
fi
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index dd881b6..1525b60 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -11,6 +11,7 @@ HEADERS = avcodec.h \
vda.h \
vdpau.h \
version.h \
+ vt.h \
xvmc.h \
OBJS = allcodecs.o \
@@ -66,6 +67,7 @@ OBJS-$(CONFIG_RDFT) += rdft.o $(RDFT-OBJS-yes)
OBJS-$(CONFIG_SINEWIN) += sinewin.o
OBJS-$(CONFIG_VAAPI) += vaapi.o
OBJS-$(CONFIG_VDPAU) += vdpau.o
+OBJS-$(CONFIG_VIDEOTOOLBOX) += vt.o
OBJS-$(CONFIG_VP3DSP) += vp3dsp.o
# decoders/encoders/hardware accelerators
@@ -208,6 +210,7 @@ OBJS-$(CONFIG_H263_DECODER) += h263dec.o h263.o ituh263dec.o \
mpeg4video.o mpeg4videodec.o flvdec.o\
intelh263dec.o
OBJS-$(CONFIG_H263_VAAPI_HWACCEL) += vaapi_mpeg4.o
+OBJS-$(CONFIG_H263_VT_HWACCEL) += vt_mpeg4.o
OBJS-$(CONFIG_H263_ENCODER) += mpeg4videoenc.o mpeg4video.o \
h263.o ituh263enc.o flvenc.o
OBJS-$(CONFIG_H264_DECODER) += h264.o \
@@ -218,6 +221,7 @@ OBJS-$(CONFIG_H264_DXVA2_HWACCEL) += dxva2_h264.o
OBJS-$(CONFIG_H264_VAAPI_HWACCEL) += vaapi_h264.o
OBJS-$(CONFIG_H264_VDA_HWACCEL) += vda_h264.o
OBJS-$(CONFIG_H264_VDA_DECODER) += vda_h264_dec.o
+OBJS-$(CONFIG_H264_VT_HWACCEL) += vt_h264.o
OBJS-$(CONFIG_HUFFYUV_DECODER) += huffyuv.o
OBJS-$(CONFIG_HUFFYUV_ENCODER) += huffyuv.o
OBJS-$(CONFIG_IAC_DECODER) += imc.o
@@ -291,10 +295,12 @@ OBJS-$(CONFIG_MPEG1VIDEO_ENCODER) += mpeg12enc.o mpeg12.o \
timecode.o
OBJS-$(CONFIG_MPEG2_DXVA2_HWACCEL) += dxva2_mpeg2.o
OBJS-$(CONFIG_MPEG2_VAAPI_HWACCEL) += vaapi_mpeg2.o
+OBJS-$(CONFIG_MPEG2_VT_HWACCEL) += vt_mpeg2.o
OBJS-$(CONFIG_MPEG2VIDEO_DECODER) += mpeg12.o mpeg12data.o
OBJS-$(CONFIG_MPEG2VIDEO_ENCODER) += mpeg12enc.o mpeg12.o \
timecode.o
OBJS-$(CONFIG_MPEG4_VAAPI_HWACCEL) += vaapi_mpeg4.o
+OBJS-$(CONFIG_MPEG4_VT_HWACCEL) += vt_mpeg4.o
OBJS-$(CONFIG_MSMPEG4V1_DECODER) += msmpeg4.o msmpeg4data.o
OBJS-$(CONFIG_MSMPEG4V2_DECODER) += msmpeg4.o msmpeg4data.o h263dec.o \
h263.o ituh263dec.o mpeg4videodec.o
@@ -768,6 +774,7 @@ SKIPHEADERS-$(CONFIG_MPEG_XVMC_DECODER) += xvmc.h
SKIPHEADERS-$(CONFIG_VAAPI) += vaapi_internal.h
SKIPHEADERS-$(CONFIG_VDA) += vda.h
SKIPHEADERS-$(CONFIG_VDPAU) += vdpau.h
+SKIPHEADERS-$(CONFIG_VIDEOTOOLBOX) += vt.h vt_internal.h
SKIPHEADERS-$(HAVE_OS2THREADS) += os2threads.h
SKIPHEADERS-$(HAVE_W32THREADS) += w32pthreads.h
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 8806c6a..ecc367e 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -56,14 +56,18 @@ void avcodec_register_all(void)
/* hardware accelerators */
REGISTER_HWACCEL (H263_VAAPI, h263_vaapi);
+ REGISTER_HWACCEL (H263_VT, h263_vt);
REGISTER_HWACCEL (H264_DXVA2, h264_dxva2);
REGISTER_HWACCEL (H264_VAAPI, h264_vaapi);
REGISTER_HWACCEL (H264_VDA, h264_vda);
+ REGISTER_HWACCEL (H264_VT, h264_vt);
REGISTER_HWACCEL (MPEG1_VDPAU, mpeg1_vdpau);
REGISTER_HWACCEL (MPEG2_DXVA2, mpeg2_dxva2);
REGISTER_HWACCEL (MPEG2_VAAPI, mpeg2_vaapi);
REGISTER_HWACCEL (MPEG2_VDPAU, mpeg2_vdpau);
+ REGISTER_HWACCEL (MPEG2_VT, mpeg2_vt);
REGISTER_HWACCEL (MPEG4_VAAPI, mpeg4_vaapi);
+ REGISTER_HWACCEL (MPEG4_VT, mpeg4_vt);
REGISTER_HWACCEL (VC1_DXVA2, vc1_dxva2);
REGISTER_HWACCEL (VC1_VAAPI, vc1_vaapi);
REGISTER_HWACCEL (WMV3_DXVA2, wmv3_dxva2);
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 713fda7..bb42323 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -70,6 +70,7 @@ static const enum PixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
PIX_FMT_DXVA2_VLD,
PIX_FMT_VAAPI_VLD,
PIX_FMT_VDA_VLD,
+ PIX_FMT_VT_VLD,
PIX_FMT_YUVJ420P,
PIX_FMT_NONE
};
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 1bf857e..09532a8 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -1203,6 +1203,9 @@ static const enum PixelFormat mpeg2_hwaccel_pixfmt_list_420[] = {
#if CONFIG_MPEG2_VAAPI_HWACCEL
PIX_FMT_VAAPI_VLD,
#endif
+#if CONFIG_MPEG2_VT_HWACCEL
+ PIX_FMT_VT_VLD,
+#endif
PIX_FMT_YUV420P,
PIX_FMT_NONE
};
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 0719a65..9964278 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -134,6 +134,7 @@ const enum PixelFormat ff_hwaccel_pixfmt_list_420[] = {
PIX_FMT_DXVA2_VLD,
PIX_FMT_VAAPI_VLD,
PIX_FMT_VDA_VLD,
+ PIX_FMT_VT_VLD,
PIX_FMT_YUV420P,
PIX_FMT_NONE
};
diff --git a/libavcodec/vt.c b/libavcodec/vt.c
new file mode 100644
index 0000000..e357b56
--- /dev/null
+++ b/libavcodec/vt.c
@@ -0,0 +1,365 @@
+/*
+ * VideoToolbox hardware acceleration
+ *
+ * copyright (c) 2012 Sebastien Zwickert
+ *
+ * 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 "libavutil/avutil.h"
+#include "libavformat/avio.h"
+#include "libavformat/movenc.h"
+
+#include "vt_internal.h"
+
+static CFDataRef vt_esds_extradata_create(AVCodecContext *avctx)
+{
+ CFDataRef data = NULL;
+ MOVTrack *track = NULL;
+ AVIOContext *pb = NULL;
+ uint8_t *buf = NULL;
+ int sb = 8; // skip first atom info : size and fourcc
+ int buf_size = 3 + 5 + 13 + 5 + avctx->extradata_size + 3;
+ // ES_DescrTag data + DecoderConfigDescrTag + data + DecSpecificInfoTag + size + SLConfigDescriptor
+ int padding = 12 + sb;
+ int s;
+
+ if (!(buf = av_mallocz(buf_size + padding)))
+ goto end;
+
+ if (!(track = av_mallocz(sizeof(MOVTrack))))
+ goto end;
+
+ pb = avio_alloc_context(buf, buf_size + padding, 1, NULL, NULL, NULL, NULL);
+ if (!pb)
+ goto end;
+
+ track->vos_len = avctx->extradata_size;
+ track->vos_data = avctx->extradata;
+ track->enc = avctx;
+
+ s = ff_mov_write_esds_tag(pb, track);
+
+ data = CFDataCreate(kCFAllocatorDefault, buf + sb, s - sb);
+
+end:
+ av_freep(&buf);
+ av_freep(&track);
+ av_freep(&pb);
+
+ return data;
+}
+
+static CFDataRef vt_avcc_extradata_create(AVCodecContext *avctx)
+{
+ CFDataRef data;
+ /* Each VCL NAL in the bistream sent to the decoder
+ * is preceded by a 4 bytes length header.
+ * Change the avcC atom header if needed, to signal headers of 4 bytes. */
+ if (avctx->extradata_size >= 4 && (avctx->extradata[4] & 0x03) != 0x03) {
+ uint8_t *rw_extradata;
+
+ if (!(rw_extradata = av_malloc(avctx->extradata_size)))
+ return NULL;
+
+ memcpy(rw_extradata, avctx->extradata, avctx->extradata_size);
+
+ rw_extradata[4] |= 0x03;
+
+ data = CFDataCreate(kCFAllocatorDefault, rw_extradata, avctx->extradata_size);
+
+ av_freep(&rw_extradata);
+ } else {
+ data = CFDataCreate(kCFAllocatorDefault, avctx->extradata, avctx->extradata_size);
+ }
+
+ return data;
+}
+
+static CMSampleBufferRef vt_sample_buffer_create(CMFormatDescriptionRef fmt_desc,
+ void *buffer,
+ int size)
+{
+ OSStatus status;
+ CMBlockBufferRef block_buf;
+ CMSampleBufferRef sample_buf;
+
+ block_buf = NULL;
+ sample_buf = NULL;
+
+ status = CMBlockBufferCreateWithMemoryBlock(kCFAllocatorDefault,// structureAllocator
+ buffer, // memoryBlock
+ size, // blockLength
+ kCFAllocatorNull, // blockAllocator
+ NULL, // customBlockSource
+ 0, // offsetToData
+ size, // dataLength
+ 0, // flags
+ &block_buf);
+
+ if (!status) {
+ status = CMSampleBufferCreate(kCFAllocatorDefault, // allocator
+ block_buf, // dataBuffer
+ TRUE, // dataReady
+ 0, // makeDataReadyCallback
+ 0, // makeDataReadyRefcon
+ fmt_desc, // formatDescription
+ 1, // numSamples
+ 0, // numSampleTimingEntries
+ NULL, // sampleTimingArray
+ 0, // numSampleSizeEntries
+ NULL, // sampleSizeArray
+ &sample_buf);
+ }
+
+ if (block_buf)
+ CFRelease(block_buf);
+
+ return sample_buf;
+}
+
+static void vt_bitstream_release(struct vt_context *vt_ctx)
+{
+ av_freep(&vt_ctx->priv_bitstream);
+ vt_ctx->priv_bitstream_size = 0;
+}
+
+static void vt_decoder_callback(void *vt_hw_ctx,
+ void *sourceFrameRefCon,
+ OSStatus status,
+ VTDecodeInfoFlags flags,
+ CVImageBufferRef image_buffer,
+ CMTime pts,
+ CMTime duration)
+{
+ struct vt_context *vt_ctx = vt_hw_ctx;
+ vt_ctx->cv_buffer = NULL;
+
+ if (!image_buffer)
+ return;
+
+ if (vt_ctx->cv_pix_fmt != CVPixelBufferGetPixelFormatType(image_buffer))
+ return;
+
+ vt_ctx->cv_buffer = CVPixelBufferRetain(image_buffer);
+}
+
+static int vt_session_decode_frame(struct vt_context *vt_ctx)
+{
+ OSStatus status;
+ CMSampleBufferRef sample_buf;
+
+ sample_buf = vt_sample_buffer_create(vt_ctx->cm_fmt_desc,
+ vt_ctx->priv_bitstream,
+ vt_ctx->priv_bitstream_size);
+
+ if (!sample_buf)
+ return -1;
+
+ status = VTDecompressionSessionDecodeFrame(vt_ctx->session,
+ sample_buf,
+ 0, // decodeFlags
+ NULL, // sourceFrameRefCon
+ 0); // infoFlagsOut
+ if (status == noErr)
+ status = VTDecompressionSessionWaitForAsynchronousFrames(vt_ctx->session);
+
+ CFRelease(sample_buf);
+
+ return status;
+}
+
+int ff_vt_buffer_copy(struct vt_context *vt_ctx, const uint8_t *buffer, uint32_t size)
+{
+ av_fast_malloc(&vt_ctx->priv_bitstream,
+ &vt_ctx->priv_allocated_size,
+ size);
+
+ if (!vt_ctx->priv_bitstream)
+ return AVERROR(ENOMEM);
+
+ memcpy(vt_ctx->priv_bitstream, buffer, size);
+
+ vt_ctx->priv_bitstream_size = size;
+
+ return 0;
+}
+
+int ff_vt_end_frame(AVCodecContext *avctx)
+{
+ int status;
+ struct vt_context *vt_ctx = avctx->hwaccel_context;
+ MpegEncContext *s = avctx->priv_data;
+ AVFrame *frame = &s->current_picture_ptr->f;
+
+ if (!vt_ctx->session || !vt_ctx->priv_bitstream)
+ return -1;
+
+ status = vt_session_decode_frame(vt_ctx);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%d)\n", status);
+ return status;
+ }
+
+ frame->data[3] = (void*)vt_ctx->cv_buffer;
+
+ return status;
+}
+
+int ff_vt_session_create(struct vt_context *vt_ctx,
+ CMVideoFormatDescriptionRef fmt_desc,
+ CFDictionaryRef decoder_spec,
+ CFDictionaryRef buf_attr)
+{
+ OSStatus status;
+ VTDecompressionOutputCallbackRecord decoder_cb;
+
+ if (!fmt_desc)
+ return -1;
+
+ vt_ctx->cm_fmt_desc = CFRetain(fmt_desc);
+
+ decoder_cb.decompressionOutputCallback = vt_decoder_callback;
+ decoder_cb.decompressionOutputRefCon = vt_ctx;
+
+ status = VTDecompressionSessionCreate(NULL, // allocator
+ fmt_desc, // videoFormatDescription
+ decoder_spec, // videoDecoderSpecification
+ buf_attr, // destinationImageBufferAttributes
+ &decoder_cb, // outputCallback
+ &vt_ctx->session);// decompressionSessionOut
+ if (noErr != status)
+ return status;
+
+ return 0;
+}
+
+void ff_vt_session_invalidate(struct vt_context *vt_ctx)
+{
+ if (vt_ctx->cm_fmt_desc)
+ CFRelease(vt_ctx->cm_fmt_desc);
+
+ if (vt_ctx->session)
+ VTDecompressionSessionInvalidate(vt_ctx->session);
+
+ vt_bitstream_release(vt_ctx);
+}
+
+CFDictionaryRef ff_vt_decoder_config_create(CMVideoCodecType codec_type,
+ AVCodecContext *avctx)
+{
+ CFMutableDictionaryRef config_info = NULL;
+ if (avctx->extradata_size) {
+ CFMutableDictionaryRef avc_info;
+ CFDataRef data;
+
+ config_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
+ 1,
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+ avc_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
+ 1,
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+
+ switch (codec_type) {
+ case kCMVideoCodecType_MPEG4Video :
+ data = vt_esds_extradata_create(avctx);
+ if (data)
+ CFDictionarySetValue(avc_info, CFSTR("esds"), data);
+ break;
+ case kCMVideoCodecType_H264 :
+ data = vt_avcc_extradata_create(avctx);
+ if (data)
+ CFDictionarySetValue(avc_info, CFSTR("avcC"), data);
+ break;
+ default:
+ break;
+ }
+
+ CFDictionarySetValue(config_info,
+ kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms,
+ avc_info);
+
+ if (data)
+ CFRelease(data);
+ CFRelease(avc_info);
+ }
+ return config_info;
+}
+
+CFDictionaryRef ff_vt_buffer_attributes_create(int width, int height, OSType pix_fmt)
+{
+ CFMutableDictionaryRef buffer_attributes;
+ CFMutableDictionaryRef io_surface_properties;
+ CFNumberRef cv_pix_fmt;
+ CFNumberRef w;
+ CFNumberRef h;
+
+ w = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &width);
+ h = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &height);
+ cv_pix_fmt = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &pix_fmt);
+
+ buffer_attributes = CFDictionaryCreateMutable(kCFAllocatorDefault,
+ 4,
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+ io_surface_properties = CFDictionaryCreateMutable(kCFAllocatorDefault,
+ 0,
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+ CFDictionarySetValue(buffer_attributes,
+ kCVPixelBufferPixelFormatTypeKey,
+ cv_pix_fmt);
+ CFDictionarySetValue(buffer_attributes,
+ kCVPixelBufferIOSurfacePropertiesKey,
+ io_surface_properties);
+ CFDictionarySetValue(buffer_attributes,
+ kCVPixelBufferWidthKey,
+ w);
+ CFDictionarySetValue(buffer_attributes,
+ kCVPixelBufferHeightKey,
+ h);
+
+ CFRelease(io_surface_properties);
+ CFRelease(cv_pix_fmt);
+ CFRelease(w);
+ CFRelease(h);
+
+ return buffer_attributes;
+}
+
+CMVideoFormatDescriptionRef ff_vt_format_desc_create(CMVideoCodecType codec_type,
+ CFDictionaryRef decoder_spec,
+ int width, int height)
+{
+ CMFormatDescriptionRef cm_fmt_desc;
+ OSStatus status;
+
+ status = CMVideoFormatDescriptionCreate(kCFAllocatorDefault,
+ codec_type,
+ width,
+ height,
+ decoder_spec, ///< Dictionary of extension
+ &cm_fmt_desc);
+
+ if (status)
+ return NULL;
+
+ return cm_fmt_desc;
+}
diff --git a/libavcodec/vt.h b/libavcodec/vt.h
new file mode 100644
index 0000000..3cadf43
--- /dev/null
+++ b/libavcodec/vt.h
@@ -0,0 +1,186 @@
+/*
+ * VideoToolbox hardware acceleration
+ *
+ * copyright (c) 2012 Sebastien Zwickert
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_VT_H
+#define AVCODEC_VT_H
+
+/**
+ * @file
+ * @ingroup lavc_codec_hwaccel_vt
+ * Public libavcodec VideoToolbox header.
+ */
+
+#include <stdint.h>
+
+#define Picture QuickdrawPicture
+#include <VideoToolbox/VideoToolbox.h>
+#undef Picture
+
+#include "libavcodec/avcodec.h"
+
+/**
+ * This structure is used to provide the necessary configuration and data
+ * to the VideoToolbox FFmpeg HWAccel implementation.
+ *
+ * The application must make it available as AVCodecContext.hwaccel_context.
+ */
+struct vt_context {
+ /**
+ * VideoToolbox decompression session.
+ *
+ * - encoding: unused.
+ * - decoding: Set/Unset by libavcodec.
+ */
+ VTDecompressionSessionRef session;
+
+ /**
+ * The width of encoded video.
+ *
+ * - encoding: unused.
+ * - decoding: Set/Unset by user.
+ */
+ int width;
+
+ /**
+ * The height of encoded video.
+ *
+ * - encoding: unused.
+ * - decoding: Set/Unset by user.
+ */
+ int height;
+
+ /**
+ * The type of video compression.
+ *
+ * - encoding: unused.
+ * - decoding: Set/Unset by user.
+ */
+ int cm_codec_type;
+
+ /**
+ * The pixel format for output image buffers.
+ *
+ * - encoding: unused.
+ * - decoding: Set/Unset by user.
+ */
+ OSType cv_pix_fmt;
+
+ /**
+ * The video format description.
+ *
+ * encoding: unused.
+ * decoding: Set by user. Unset by libavcodec.
+ */
+ CMVideoFormatDescriptionRef cm_fmt_desc;
+
+ /**
+ * The Core Video pixel buffer that contains the current image data.
+ *
+ * encoding: unused.
+ * decoding: Set by libavcodec. Unset by user.
+ */
+ CVImageBufferRef cv_buffer;
+
+ /**
+ * The current bitstream buffer.
+ */
+ uint8_t *priv_bitstream;
+
+ /**
+ * The current size of the bitstream.
+ */
+ int priv_bitstream_size;
+
+ /**
+ * The allocated size used for fast reallocation.
+ */
+ int priv_allocated_size;
+};
+
+/**
+ * Create a decompression session.
+ *
+ * @param vt_ctx the VideoToolbox context
+ * @param fmt_desc the video format description
+ * @param decoder_spec the specific decoder configuration
+ * @param buf_attr the output buffer attributes
+ * @return status
+ */
+int ff_vt_session_create(struct vt_context *vt_ctx,
+ CMVideoFormatDescriptionRef fmt_desc,
+ CFDictionaryRef decoder_spec,
+ CFDictionaryRef buf_attr);
+
+/**
+ * Destroy a decompression session.
+ *
+ * @param vt_ctx the VideoToolbox context
+ */
+void ff_vt_session_invalidate(struct vt_context *vt_ctx);
+
+/**
+ * Create the decoder configuration dictionary.
+ *
+ * It is the user's responsability to release the returned object (using CFRelease) after
+ * finishing.
+ *
+ * @param codec_type the type of video compression
+ * @param avctx the codec context
+ * @return a CoreFoundation dictionary or NULL if there was a problem creating the object
+ */
+CFDictionaryRef ff_vt_decoder_config_create(CMVideoCodecType codec_type,
+ AVCodecContext *avctx);
+
+/**
+ * Create the output buffer attributes.
+ *
+ * It is the user's responsability to release the returned object (using CFRelease) after
+ * finishing.
+ *
+ * @param width the width of output image
+ * @param height the height of output image
+ * @param pix_fmt the pixel format of output image
+ * @return a CoreFoundation dictionary.
+ */
+CFDictionaryRef ff_vt_buffer_attributes_create(int width, int height, OSType pix_fmt);
+
+/**
+ * Create the video format description.
+ *
+ * It is the user's responsability to release the returned object (using CFRelease) after
+ * finishing.
+ *
+ * @param codec_type the type of video compression
+ * @param decoder_spec the specific decoder configuration
+ * @param width the width of encoded video
+ * @param height the height of encoded video
+ * @return a CoreMedia video format object
+ */
+CMVideoFormatDescriptionRef ff_vt_format_desc_create(CMVideoCodecType codec_type,
+ CFDictionaryRef decoder_spec,
+ int width, int height);
+
+/**
+ * @}
+ */
+
+#endif /* AVCODEC_VT_H */
diff --git a/libavcodec/vt_h264.c b/libavcodec/vt_h264.c
new file mode 100644
index 0000000..6266926
--- /dev/null
+++ b/libavcodec/vt_h264.c
@@ -0,0 +1,79 @@
+/*
+ * VideoToolbox H264 hardware acceleration
+ *
+ * copyright (c) 2012 Sebastien Zwickert
+ *
+ * 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 "h264.h"
+#include "vt_internal.h"
+
+static int vt_h264_start_frame(AVCodecContext *avctx,
+ av_unused const uint8_t *buffer,
+ av_unused uint32_t size)
+{
+ struct vt_context *vt_ctx = avctx->hwaccel_context;
+
+ if (!vt_ctx->session)
+ return -1;
+
+ vt_ctx->priv_bitstream_size = 0;
+
+ return 0;
+}
+
+static int vt_h264_decode_slice(AVCodecContext *avctx,
+ const uint8_t *buffer,
+ uint32_t size)
+{
+ struct vt_context *vt_ctx = avctx->hwaccel_context;
+ void *tmp;
+
+ if (!vt_ctx->session)
+ return -1;
+
+ tmp = av_fast_realloc(vt_ctx->priv_bitstream,
+ &vt_ctx->priv_allocated_size,
+ vt_ctx->priv_bitstream_size+size+4);
+ if (!tmp)
+ return AVERROR(ENOMEM);
+
+ vt_ctx->priv_bitstream = tmp;
+
+ AV_WB32(vt_ctx->priv_bitstream + vt_ctx->priv_bitstream_size, size);
+ memcpy(vt_ctx->priv_bitstream + vt_ctx->priv_bitstream_size + 4, buffer, size);
+
+ vt_ctx->priv_bitstream_size += size + 4;
+
+ return 0;
+}
+
+static int vt_h264_end_frame(AVCodecContext *avctx)
+{
+ return ff_vt_end_frame(avctx);
+}
+
+AVHWAccel ff_h264_vt_hwaccel = {
+ .name = "h264_vt",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_H264,
+ .pix_fmt = PIX_FMT_VT_VLD,
+ .start_frame = vt_h264_start_frame,
+ .decode_slice = vt_h264_decode_slice,
+ .end_frame = vt_h264_end_frame,
+};
diff --git a/libavcodec/vt_internal.h b/libavcodec/vt_internal.h
new file mode 100644
index 0000000..31bd4bc
--- /dev/null
+++ b/libavcodec/vt_internal.h
@@ -0,0 +1,42 @@
+/*
+ * VideoToolbox hardware acceleration
+ *
+ * copyright (c) 2012 Sebastien Zwickert
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_VT_INTERNAL_H
+#define AVCODEC_VT_INTERNAL_H
+
+#include "vt.h"
+#include "mpegvideo.h"
+
+/**
+ * @addtogroup VT_Decoding
+ *
+ * @{
+ */
+
+int ff_vt_buffer_copy(struct vt_context *vt_ctx,
+ const uint8_t *buffer,
+ uint32_t size);
+int ff_vt_end_frame(AVCodecContext *avctx);
+
+/* @} */
+
+#endif /* AVCODEC_VT_INTERNAL_H */
diff --git a/libavcodec/vt_mpeg2.c b/libavcodec/vt_mpeg2.c
new file mode 100644
index 0000000..2f621b8
--- /dev/null
+++ b/libavcodec/vt_mpeg2.c
@@ -0,0 +1,62 @@
+/*
+ * VideoToolbox MPEG2 hardware acceleration
+ *
+ * copyright (c) 2012 Sebastien Zwickert
+ *
+ * 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 "vt_internal.h"
+
+static int vt_mpeg2_start_frame(AVCodecContext *avctx,
+ const uint8_t *buffer,
+ uint32_t size)
+{
+ struct vt_context *vt_ctx = avctx->hwaccel_context;
+
+ if (!vt_ctx->session)
+ return -1;
+
+ return ff_vt_buffer_copy(vt_ctx, buffer, size);
+}
+
+static int vt_mpeg2_decode_slice(AVCodecContext *avctx,
+ const uint8_t *buffer,
+ uint32_t size)
+{
+ struct vt_context *vt_ctx = avctx->hwaccel_context;
+
+ if (!vt_ctx->session)
+ return -1;
+
+ return 0;
+}
+
+static int vt_mpeg2_end_frame(AVCodecContext *avctx)
+{
+ return ff_vt_end_frame(avctx);
+}
+
+AVHWAccel ff_mpeg2_vt_hwaccel = {
+ .name = "mpeg2_vt",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_MPEG2VIDEO,
+ .pix_fmt = PIX_FMT_VT_VLD,
+ .start_frame = vt_mpeg2_start_frame,
+ .end_frame = vt_mpeg2_end_frame,
+ .decode_slice = vt_mpeg2_decode_slice,
+};
diff --git a/libavcodec/vt_mpeg4.c b/libavcodec/vt_mpeg4.c
new file mode 100644
index 0000000..1a9814e
--- /dev/null
+++ b/libavcodec/vt_mpeg4.c
@@ -0,0 +1,77 @@
+/*
+ * VideoToolbox MPEG4 / H263 hardware acceleration
+ *
+ * copyright (c) 2012 Sebastien Zwickert
+ *
+ * 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 "vt_internal.h"
+
+static int vt_mpeg4_start_frame(AVCodecContext *avctx,
+ const uint8_t *buffer,
+ uint32_t size)
+{
+ struct vt_context *vt_ctx = avctx->hwaccel_context;
+
+ if (!vt_ctx->session)
+ return -1;
+
+ return ff_vt_buffer_copy(vt_ctx, buffer, size);
+}
+
+static int vt_mpeg4_decode_slice(AVCodecContext *avctx,
+ const uint8_t *buffer,
+ uint32_t size)
+{
+ struct vt_context *vt_ctx = avctx->hwaccel_context;
+
+ if (!vt_ctx->session)
+ return -1;
+
+ return 0;
+}
+
+static int vt_mpeg4_end_frame(AVCodecContext *avctx)
+{
+ return ff_vt_end_frame(avctx);
+}
+
+#if CONFIG_MPEG4_VT_HWACCEL
+AVHWAccel ff_mpeg4_vt_hwaccel = {
+ .name = "mpeg4_vt",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_MPEG4,
+ .pix_fmt = PIX_FMT_VT_VLD,
+ .start_frame = vt_mpeg4_start_frame,
+ .end_frame = vt_mpeg4_end_frame,
+ .decode_slice = vt_mpeg4_decode_slice,
+};
+#endif
+
+#if CONFIG_H263_VT_HWACCEL
+AVHWAccel ff_h263_vt_hwaccel = {
+ .name = "h263_vt",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_H263,
+ .pix_fmt = PIX_FMT_VT_VLD,
+ .start_frame = vt_mpeg4_start_frame,
+ .end_frame = vt_mpeg4_end_frame,
+ .decode_slice = vt_mpeg4_decode_slice,
+};
+#endif
+
diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c
index d64d300..1143bcc 100644
--- a/libavutil/pixdesc.c
+++ b/libavutil/pixdesc.c
@@ -1274,6 +1274,12 @@ const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
.log2_chroma_h = 1,
.flags = PIX_FMT_HWACCEL,
},
+ [PIX_FMT_VT_VLD] = {
+ .name = "vt_vld",
+ .log2_chroma_w = 1,
+ .log2_chroma_h = 1,
+ .flags = PIX_FMT_HWACCEL,
+ },
[PIX_FMT_GRAY8A] = {
.name = "gray8a",
.nb_components = 2,
diff --git a/libavutil/pixfmt.h b/libavutil/pixfmt.h
index fa771bc..d47d911 100644
--- a/libavutil/pixfmt.h
+++ b/libavutil/pixfmt.h
@@ -201,6 +201,7 @@ enum PixelFormat {
PIX_FMT_GBRP12LE, ///< planar GBR 4:4:4 36bpp, little endian
PIX_FMT_GBRP14BE, ///< planar GBR 4:4:4 42bpp, big endian
PIX_FMT_GBRP14LE, ///< planar GBR 4:4:4 42bpp, little endian
+ PIX_FMT_VT_VLD, ///< hardware decoding through VideoToolbox
PIX_FMT_NB, ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
};
--
1.7.9.6 (Apple Git-31.1)
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