nsresult
AppleVTDecoder::InitializeSession()
{
OSStatus rv;
AutoCFRelease<CFDictionaryRef> extensions = CreateDecoderExtensions();
rv = CMVideoFormatDescriptionCreate(kCFAllocatorDefault,
kCMVideoCodecType_H264,
mPictureWidth,
mPictureHeight,
extensions,
&mFormat);
if (rv != noErr) {
NS_ERROR("Couldn't create format description!");
return NS_ERROR_FAILURE;
}
// Contruct video decoder selection spec.
AutoCFRelease<CFDictionaryRef> spec = CreateDecoderSpecification();
// Contruct output configuration.
AutoCFRelease<CFDictionaryRef> outputConfiguration =
CreateOutputConfiguration();
VTDecompressionOutputCallbackRecord cb = { PlatformCallback, this };
rv = VTDecompressionSessionCreate(kCFAllocatorDefault,
mFormat,
spec, // Video decoder selection.
outputConfiguration, // Output video format.
&cb,
&mSession);
if (rv != noErr) {
NS_ERROR("Couldn't create decompression session!");
return NS_ERROR_FAILURE;
}
if (AppleVTLinker::skPropUsingHWAccel) {
CFBooleanRef isUsingHW = nullptr;
rv = VTSessionCopyProperty(mSession,
AppleVTLinker::skPropUsingHWAccel,
kCFAllocatorDefault,
&isUsingHW);
if (rv != noErr) {
LOG("AppleVTDecoder: system doesn't support hardware acceleration");
}
mIsHardwareAccelerated = rv == noErr && isUsingHW == kCFBooleanTrue;
LOG("AppleVTDecoder: %s hardware accelerated decoding",
mIsHardwareAccelerated ? "using" : "not using");
} else {
LOG("AppleVTDecoder: couldn't determine hardware acceleration status.");
}
return NS_OK;
}
static CMFormatDescriptionRef
create_format_description (GstVtdec * vtdec, CMVideoCodecType cm_format)
{
OSStatus status;
CMFormatDescriptionRef format_description;
status = CMVideoFormatDescriptionCreate (NULL,
cm_format, vtdec->video_info.width, vtdec->video_info.height,
NULL, &format_description);
if (status != noErr)
return NULL;
return format_description;
}
static CMFormatDescriptionRef
gst_vtdec_create_format_description (GstVTDec * self)
{
CMFormatDescriptionRef fmt_desc;
OSStatus status;
status = CMVideoFormatDescriptionCreate (NULL,
self->details->format_id, self->vinfo.width, self->vinfo.height,
NULL, &fmt_desc);
if (status == noErr)
return fmt_desc;
else
return NULL;
}
static CMFormatDescriptionRef
gst_vtdec_create_format_description_from_codec_data (GstVTDec * self,
GstBuffer * codec_data)
{
CMFormatDescriptionRef fmt_desc;
CFMutableDictionaryRef extensions, par, atoms;
GstMapInfo map;
OSStatus status;
gst_buffer_map (codec_data, &map, GST_MAP_READ);
/* CVPixelAspectRatio dict */
par = CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
gst_vtutil_dict_set_i32 (par, CFSTR ("HorizontalSpacing"),
self->vinfo.par_n);
gst_vtutil_dict_set_i32 (par, CFSTR ("VerticalSpacing"),
self->vinfo.par_d);
/* SampleDescriptionExtensionAtoms dict */
atoms = CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
gst_vtutil_dict_set_data (atoms, CFSTR ("avcC"), map.data, map.size);
/* Extensions dict */
extensions = CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
gst_vtutil_dict_set_string (extensions,
CFSTR ("CVImageBufferChromaLocationBottomField"), "left");
gst_vtutil_dict_set_string (extensions,
CFSTR ("CVImageBufferChromaLocationTopField"), "left");
gst_vtutil_dict_set_boolean (extensions, CFSTR("FullRangeVideo"), FALSE);
gst_vtutil_dict_set_object (extensions, CFSTR ("CVPixelAspectRatio"),
(CFTypeRef *) par);
gst_vtutil_dict_set_object (extensions,
CFSTR ("SampleDescriptionExtensionAtoms"), (CFTypeRef *) atoms);
status = CMVideoFormatDescriptionCreate (NULL,
self->details->format_id, self->vinfo.width, self->vinfo.height,
extensions, &fmt_desc);
gst_buffer_unmap (codec_data, &map);
if (status == noErr)
return fmt_desc;
else
return NULL;
}
nsresult
AppleVTDecoder::InitializeSession()
{
OSStatus rv;
#ifdef LOG_MEDIA_SHA1
SHA1Sum avc_hash;
avc_hash.update(mExtraData->Elements(),mExtraData->Length());
uint8_t digest_buf[SHA1Sum::kHashSize];
avc_hash.finish(digest_buf);
nsAutoCString avc_digest;
for (size_t i = 0; i < sizeof(digest_buf); i++) {
avc_digest.AppendPrintf("%02x", digest_buf[i]);
}
LOG("AVCDecoderConfig %ld bytes sha1 %s",
mExtraData->Length(), avc_digest.get());
#endif // LOG_MEDIA_SHA1
AutoCFRelease<CFDictionaryRef> extensions = CreateDecoderExtensions();
rv = CMVideoFormatDescriptionCreate(kCFAllocatorDefault,
kCMVideoCodecType_H264,
mPictureWidth,
mPictureHeight,
extensions,
&mFormat);
if (rv != noErr) {
NS_ERROR("Couldn't create format description!");
return NS_ERROR_FAILURE;
}
// Contruct video decoder selection spec.
AutoCFRelease<CFDictionaryRef> spec = CreateDecoderSpecification();
// Contruct output configuration.
AutoCFRelease<CFDictionaryRef> outputConfiguration =
CreateOutputConfiguration();
VTDecompressionOutputCallbackRecord cb = { PlatformCallback, this };
rv = VTDecompressionSessionCreate(kCFAllocatorDefault,
mFormat,
spec, // Video decoder selection.
outputConfiguration, // Output video format.
&cb,
&mSession);
if (rv != noErr) {
NS_ERROR("Couldn't create decompression session!");
return NS_ERROR_FAILURE;
}
if (AppleVTLinker::skPropUsingHWAccel) {
CFBooleanRef isUsingHW = nullptr;
rv = VTSessionCopyProperty(mSession,
AppleVTLinker::skPropUsingHWAccel,
kCFAllocatorDefault,
&isUsingHW);
if (rv != noErr) {
LOG("AppleVTDecoder: system doesn't support hardware acceleration");
}
mIsHardwareAccelerated = rv == noErr && isUsingHW == kCFBooleanTrue;
LOG("AppleVTDecoder: %s hardware accelerated decoding",
mIsHardwareAccelerated ? "using" : "not using");
} else {
LOG("AppleVTDecoder: couldn't determine hardware acceleration status.");
}
return NS_OK;
}
static int
video_vtb_codec_create(media_codec_t *mc, const media_codec_params_t *mcp,
media_pipe_t *mp)
{
OSStatus status;
if(!video_settings.video_accel)
return 1;
switch(mc->codec_id) {
case AV_CODEC_ID_H264:
break;
default:
return 1;
}
if(mcp == NULL || mcp->extradata == NULL || mcp->extradata_size == 0 ||
((const uint8_t *)mcp->extradata)[0] != 1)
return h264_annexb_to_avc(mc, mp, &video_vtb_codec_create);
CFMutableDictionaryRef config_dict =
CFDictionaryCreateMutable(kCFAllocatorDefault,
2,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(config_dict,
kCVImageBufferChromaLocationBottomFieldKey,
kCVImageBufferChromaLocation_Left);
CFDictionarySetValue(config_dict,
kCVImageBufferChromaLocationTopFieldKey,
kCVImageBufferChromaLocation_Left);
// Setup extradata
CFMutableDictionaryRef extradata_dict =
CFDictionaryCreateMutable(kCFAllocatorDefault,
1,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDataRef extradata = CFDataCreate(kCFAllocatorDefault, mcp->extradata,
mcp->extradata_size);
CFDictionarySetValue(extradata_dict, CFSTR("avcC"), extradata);
CFRelease(extradata);
CFDictionarySetValue(config_dict,
kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms,
extradata_dict);
CFRelease(extradata_dict);
#if !TARGET_OS_IPHONE
// Enable and force HW accelration
CFDictionarySetValue(config_dict,
kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder,
kCFBooleanTrue);
CFDictionarySetValue(config_dict,
kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder,
kCFBooleanTrue);
#endif
CMVideoFormatDescriptionRef fmt;
status = CMVideoFormatDescriptionCreate(kCFAllocatorDefault,
kCMVideoCodecType_H264,
mcp->width,
mcp->height,
config_dict,
&fmt);
if(status) {
TRACE(TRACE_DEBUG, "VTB", "Unable to create description %d", status);
return 1;
}
CFMutableDictionaryRef surface_dict =
CFDictionaryCreateMutable(kCFAllocatorDefault,
2,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(surface_dict,
#if !TARGET_OS_IPHONE
kCVPixelBufferOpenGLCompatibilityKey,
#else
kCVPixelBufferOpenGLESCompatibilityKey,
#endif
kCFBooleanTrue);
vtb_decoder_t *vtbd = calloc(1, sizeof(vtb_decoder_t));
dict_set_int32(surface_dict, kCVPixelBufferWidthKey, mcp->width);
dict_set_int32(surface_dict, kCVPixelBufferHeightKey, mcp->height);
#if TARGET_OS_IPHONE
vtbd->vtbd_pixel_format = kCVPixelFormatType_420YpCbCr8BiPlanarFullRange;
#else
vtbd->vtbd_pixel_format = kCVPixelFormatType_420YpCbCr8Planar;
#endif
dict_set_int32(surface_dict, kCVPixelBufferPixelFormatTypeKey,
vtbd->vtbd_pixel_format);
int linewidth = mcp->width;
switch(vtbd->vtbd_pixel_format) {
case kCVPixelFormatType_420YpCbCr8BiPlanarFullRange:
case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
linewidth *= 2;
break;
}
dict_set_int32(surface_dict, kCVPixelBufferBytesPerRowAlignmentKey, linewidth);
VTDecompressionOutputCallbackRecord cb = {
.decompressionOutputCallback = picture_out,
.decompressionOutputRefCon = vtbd
};
/* create decompression session */
status = VTDecompressionSessionCreate(kCFAllocatorDefault,
fmt,
config_dict,
surface_dict,
&cb,
&vtbd->vtbd_session);
CFRelease(config_dict);
CFRelease(surface_dict);
if(status) {
TRACE(TRACE_DEBUG, "VTB", "Failed to open -- %d", status);
CFRelease(fmt);
return 1;
}
vtbd->vtbd_fmt = fmt;
vtbd->vtbd_max_ts = PTS_UNSET;
vtbd->vtbd_flush_to = PTS_UNSET;
vtbd->vtbd_last_pts = PTS_UNSET;
mc->opaque = vtbd;
mc->decode = vtb_decode;
mc->close = vtb_close;
mc->flush = vtb_flush;
TRACE(TRACE_DEBUG, "VTB", "Opened decoder");
return 0;
}
nsresult
AppleVTDecoder::InitializeSession()
{
OSStatus rv;
AutoCFRelease<CFMutableDictionaryRef> extensions =
CFDictionaryCreateMutable(NULL, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
AppleUtils::SetCFDict(extensions, "CVImageBufferChromaLocationBottomField", "left");
AppleUtils::SetCFDict(extensions, "CVImageBufferChromaLocationTopField", "left");
AppleUtils::SetCFDict(extensions, "FullRangeVideo", true);
AutoCFRelease<CFMutableDictionaryRef> atoms =
CFDictionaryCreateMutable(NULL, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
AutoCFRelease<CFDataRef> avc_data = CFDataCreate(NULL,
mConfig.extra_data.begin(), mConfig.extra_data.length());
#ifdef LOG_MEDIA_SHA1
SHA1Sum avc_hash;
avc_hash.update(mConfig.extra_data.begin(), mConfig.extra_data.length());
uint8_t digest_buf[SHA1Sum::kHashSize];
avc_hash.finish(digest_buf);
nsAutoCString avc_digest;
for (size_t i = 0; i < sizeof(digest_buf); i++) {
avc_digest.AppendPrintf("%02x", digest_buf[i]);
}
LOG("AVCDecoderConfig %ld bytes sha1 %s",
mConfig.extra_data.length(), avc_digest.get());
#endif // LOG_MEDIA_SHA1
CFDictionarySetValue(atoms, CFSTR("avcC"), avc_data);
CFDictionarySetValue(extensions, CFSTR("SampleDescriptionExtensionAtoms"), atoms);
rv = CMVideoFormatDescriptionCreate(NULL, // Use default allocator.
kCMVideoCodecType_H264,
mConfig.display_width,
mConfig.display_height,
extensions,
&mFormat);
if (rv != noErr) {
NS_ERROR("Couldn't create format description!");
return NS_ERROR_FAILURE;
}
// Contruct video decoder selection spec.
AutoCFRelease<CFMutableDictionaryRef> spec =
CFDictionaryCreateMutable(NULL, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
// This key is supported (or ignored) but not declared prior to OSX 10.9.
AutoCFRelease<CFStringRef>
kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder =
CFStringCreateWithCString(NULL, "EnableHardwareAcceleratedVideoDecoder",
kCFStringEncodingUTF8);
CFDictionarySetValue(spec,
kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder,
kCFBooleanTrue);
VTDecompressionOutputCallbackRecord cb = { PlatformCallback, this };
rv = VTDecompressionSessionCreate(NULL, // Allocator.
mFormat,
spec, // Video decoder selection.
NULL, // Output video format.
&cb,
&mSession);
if (rv != noErr) {
NS_ERROR("Couldn't create decompression session!");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
static GF_Err VTBDec_InitDecoder(VTBDec *ctx, Bool force_dsi_rewrite)
{
CFMutableDictionaryRef dec_dsi, dec_type;
CFMutableDictionaryRef dsi;
VTDecompressionOutputCallbackRecord cbacks;
CFDictionaryRef buffer_attribs;
OSStatus status;
OSType kColorSpace;
CFDataRef data = NULL;
char *dsi_data=NULL;
u32 dsi_data_size=0;
dec_dsi = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
kColorSpace = kCVPixelFormatType_420YpCbCr8Planar;
ctx->pix_fmt = GF_PIXEL_YV12;
switch (ctx->esd->decoderConfig->objectTypeIndication) {
case GPAC_OTI_VIDEO_AVC :
if (ctx->sps && ctx->pps) {
AVCState avc;
s32 idx;
memset(&avc, 0, sizeof(AVCState));
avc.sps_active_idx = -1;
idx = gf_media_avc_read_sps(ctx->sps, ctx->sps_size, &avc, 0, NULL);
ctx->vtb_type = kCMVideoCodecType_H264;
assert(ctx->sps);
ctx->width = avc.sps[idx].width;
ctx->height = avc.sps[idx].height;
if (avc.sps[idx].vui.par_num && avc.sps[idx].vui.par_den) {
ctx->pixel_ar = avc.sps[idx].vui.par_num;
ctx->pixel_ar <<= 16;
ctx->pixel_ar |= avc.sps[idx].vui.par_den;
}
ctx->chroma_format = avc.sps[idx].chroma_format;
ctx->luma_bit_depth = 8 + avc.sps[idx].luma_bit_depth_m8;
ctx->chroma_bit_depth = 8 + avc.sps[idx].chroma_bit_depth_m8;
switch (ctx->chroma_format) {
case 2:
//422 decoding doesn't seem supported ...
if (ctx->luma_bit_depth>8) {
kColorSpace = kCVPixelFormatType_422YpCbCr10;
ctx->pix_fmt = GF_PIXEL_YUV422_10;
} else {
kColorSpace = kCVPixelFormatType_422YpCbCr8;
ctx->pix_fmt = GF_PIXEL_YUV422;
}
break;
case 3:
if (ctx->luma_bit_depth>8) {
kColorSpace = kCVPixelFormatType_444YpCbCr10;
ctx->pix_fmt = GF_PIXEL_YUV444_10;
} else {
kColorSpace = kCVPixelFormatType_444YpCbCr8;
ctx->pix_fmt = GF_PIXEL_YUV444;
}
break;
default:
if (ctx->luma_bit_depth>8) {
kColorSpace = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
ctx->pix_fmt = GF_PIXEL_YV12_10;
}
break;
}
if (!ctx->esd->decoderConfig->decoderSpecificInfo || force_dsi_rewrite || !ctx->esd->decoderConfig->decoderSpecificInfo->data) {
GF_AVCConfigSlot *slc_s, *slc_p;
GF_AVCConfig *cfg = gf_odf_avc_cfg_new();
cfg->configurationVersion = 1;
cfg->profile_compatibility = avc.sps[idx].prof_compat;
cfg->AVCProfileIndication = avc.sps[idx].profile_idc;
cfg->AVCLevelIndication = avc.sps[idx].level_idc;
cfg->chroma_format = avc.sps[idx].chroma_format;
cfg->luma_bit_depth = 8 + avc.sps[idx].luma_bit_depth_m8;
cfg->chroma_bit_depth = 8 + avc.sps[idx].chroma_bit_depth_m8;
cfg->nal_unit_size = 4;
GF_SAFEALLOC(slc_s, GF_AVCConfigSlot);
slc_s->data = ctx->sps;
slc_s->size = ctx->sps_size;
gf_list_add(cfg->sequenceParameterSets, slc_s);
GF_SAFEALLOC(slc_p, GF_AVCConfigSlot);
slc_p->data = ctx->pps;
slc_p->size = ctx->pps_size;
gf_list_add(cfg->pictureParameterSets , slc_p);
gf_odf_avc_cfg_write(cfg, &dsi_data, &dsi_data_size);
slc_s->data = slc_p->data = NULL;
gf_odf_avc_cfg_del((cfg));
} else {
dsi_data = ctx->esd->decoderConfig->decoderSpecificInfo->data;
dsi_data_size = ctx->esd->decoderConfig->decoderSpecificInfo->dataLength;
}
dsi = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
data = CFDataCreate(kCFAllocatorDefault, dsi_data, dsi_data_size);
if (data) {
CFDictionarySetValue(dsi, CFSTR("avcC"), data);
CFDictionarySetValue(dec_dsi, kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms, dsi);
CFRelease(data);
}
CFRelease(dsi);
if (!ctx->esd->decoderConfig->decoderSpecificInfo || !ctx->esd->decoderConfig->decoderSpecificInfo->data) {
gf_free(ctx->sps);
ctx->sps = NULL;
gf_free(ctx->pps);
ctx->pps = NULL;
gf_free(dsi_data);
}
}
break;
case GPAC_OTI_VIDEO_MPEG2_SIMPLE:
case GPAC_OTI_VIDEO_MPEG2_MAIN:
case GPAC_OTI_VIDEO_MPEG2_SNR:
case GPAC_OTI_VIDEO_MPEG2_SPATIAL:
case GPAC_OTI_VIDEO_MPEG2_HIGH:
case GPAC_OTI_VIDEO_MPEG2_422:
ctx->vtb_type = kCMVideoCodecType_MPEG2Video;
if (!ctx->width || !ctx->height) {
ctx->init_mpeg12 = GF_TRUE;
return GF_OK;
}
ctx->init_mpeg12 = GF_FALSE;
break;
case GPAC_OTI_VIDEO_MPEG1:
ctx->vtb_type = kCMVideoCodecType_MPEG1Video;
if (!ctx->width || !ctx->height) {
ctx->init_mpeg12 = GF_TRUE;
return GF_OK;
}
ctx->init_mpeg12 = GF_FALSE;
break;
case GPAC_OTI_VIDEO_MPEG4_PART2 :
{
Bool reset_dsi = GF_FALSE;
ctx->vtb_type = kCMVideoCodecType_MPEG4Video;
if (!ctx->esd->decoderConfig->decoderSpecificInfo) {
ctx->esd->decoderConfig->decoderSpecificInfo = (GF_DefaultDescriptor *) gf_odf_desc_new(GF_ODF_DSI_TAG);
}
if (!ctx->esd->decoderConfig->decoderSpecificInfo->data) {
reset_dsi = GF_TRUE;
ctx->esd->decoderConfig->decoderSpecificInfo->data = ctx->vosh;
ctx->esd->decoderConfig->decoderSpecificInfo->dataLength = ctx->vosh_size;
}
if (ctx->esd->decoderConfig->decoderSpecificInfo->data) {
GF_M4VDecSpecInfo vcfg;
GF_BitStream *bs;
gf_m4v_get_config(ctx->esd->decoderConfig->decoderSpecificInfo->data, ctx->esd->decoderConfig->decoderSpecificInfo->dataLength, &vcfg);
ctx->width = vcfg.width;
ctx->height = vcfg.height;
if (ctx->esd->slConfig) {
ctx->esd->slConfig->predefined = 2;
}
bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
gf_bs_write_u32(bs, 0);
gf_odf_desc_write_bs((GF_Descriptor *) ctx->esd, bs);
gf_bs_get_content(bs, &dsi_data, &dsi_data_size);
gf_bs_del(bs);
dsi = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
data = CFDataCreate(kCFAllocatorDefault, dsi_data, dsi_data_size);
gf_free(dsi_data);
if (data) {
CFDictionarySetValue(dsi, CFSTR("esds"), data);
CFDictionarySetValue(dec_dsi, kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms, dsi);
CFRelease(data);
}
CFRelease(dsi);
if (reset_dsi) {
ctx->esd->decoderConfig->decoderSpecificInfo->data = NULL;
ctx->esd->decoderConfig->decoderSpecificInfo->dataLength = 0;
}
ctx->skip_mpeg4_vosh = GF_FALSE;
} else {
ctx->skip_mpeg4_vosh = GF_TRUE;
return GF_OK;
}
break;
}
case GPAC_OTI_MEDIA_GENERIC:
if (ctx->esd->decoderConfig->decoderSpecificInfo && ctx->esd->decoderConfig->decoderSpecificInfo->dataLength) {
char *dsi = ctx->esd->decoderConfig->decoderSpecificInfo->data;
if (ctx->esd->decoderConfig->decoderSpecificInfo->dataLength<8) return GF_NON_COMPLIANT_BITSTREAM;
if (strnicmp(dsi, "s263", 4)) return GF_NOT_SUPPORTED;
ctx->width = ((u8) dsi[4]); ctx->width<<=8; ctx->width |= ((u8) dsi[5]);
ctx->height = ((u8) dsi[6]); ctx->height<<=8; ctx->height |= ((u8) dsi[7]);
ctx->vtb_type = kCMVideoCodecType_H263;
}
break;
default :
return GF_NOT_SUPPORTED;
}
if (! ctx->width || !ctx->height) return GF_NOT_SUPPORTED;
status = CMVideoFormatDescriptionCreate(kCFAllocatorDefault, ctx->vtb_type, ctx->width, ctx->height, dec_dsi, &ctx->fmt_desc);
if (!ctx->fmt_desc) {
if (dec_dsi) CFRelease(dec_dsi);
return GF_NON_COMPLIANT_BITSTREAM;
}
buffer_attribs = VTBDec_CreateBufferAttributes(ctx->width, ctx->height, kColorSpace);
cbacks.decompressionOutputCallback = VTBDec_on_frame;
cbacks.decompressionOutputRefCon = ctx;
dec_type = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(dec_type, kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder, kCFBooleanTrue);
ctx->is_hardware = GF_TRUE;
status = VTDecompressionSessionCreate(NULL, ctx->fmt_desc, dec_type, NULL, &cbacks, &ctx->vtb_session);
//if HW decoder not available, try soft one
if (status) {
status = VTDecompressionSessionCreate(NULL, ctx->fmt_desc, NULL, buffer_attribs, &cbacks, &ctx->vtb_session);
ctx->is_hardware = GF_FALSE;
}
if (dec_dsi)
CFRelease(dec_dsi);
if (dec_type)
CFRelease(dec_type);
if (buffer_attribs)
CFRelease(buffer_attribs);
switch (status) {
case kVTVideoDecoderNotAvailableNowErr:
case kVTVideoDecoderUnsupportedDataFormatErr:
return GF_NOT_SUPPORTED;
case kVTVideoDecoderMalfunctionErr:
return GF_IO_ERR;
case kVTVideoDecoderBadDataErr :
return GF_BAD_PARAM;
case kVTPixelTransferNotSupportedErr:
case kVTCouldNotFindVideoDecoderErr:
return GF_NOT_SUPPORTED;
case 0:
break;
default:
return GF_SERVICE_ERROR;
}
//good to go !
if (ctx->pix_fmt == GF_PIXEL_YUV422) {
ctx->out_size = ctx->width*ctx->height*2;
} else if (ctx->pix_fmt == GF_PIXEL_YUV444) {
ctx->out_size = ctx->width*ctx->height*3;
} else {
// (ctx->pix_fmt == GF_PIXEL_YV12)
ctx->out_size = ctx->width*ctx->height*3/2;
}
if (ctx->luma_bit_depth>8) {
ctx->out_size *= 2;
}
return GF_OK;
}
nsresult
AppleVTDecoder::InitializeSession()
{
OSStatus rv;
AutoCFRelease<CFMutableDictionaryRef> extensions =
CFDictionaryCreateMutable(NULL, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
AppleUtils::SetCFDict(extensions, "CVImageBufferChromaLocationBottomField", "left");
AppleUtils::SetCFDict(extensions, "CVImageBufferChromaLocationTopField", "left");
AppleUtils::SetCFDict(extensions, "FullRangeVideo", true);
AutoCFRelease<CFMutableDictionaryRef> atoms =
CFDictionaryCreateMutable(NULL, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
AutoCFRelease<CFDataRef> avc_data = CFDataCreate(NULL,
mConfig.extra_data.begin(), mConfig.extra_data.length());
#ifdef LOG_MEDIA_SHA1
SHA1Sum avc_hash;
avc_hash.update(mConfig.extra_data.begin(), mConfig.extra_data.length());
uint8_t digest_buf[SHA1Sum::kHashSize];
avc_hash.finish(digest_buf);
nsAutoCString avc_digest;
for (size_t i = 0; i < sizeof(digest_buf); i++) {
avc_digest.AppendPrintf("%02x", digest_buf[i]);
}
LOG("AVCDecoderConfig %ld bytes sha1 %s",
mConfig.extra_data.length(), avc_digest.get());
#endif // LOG_MEDIA_SHA1
CFDictionarySetValue(atoms, CFSTR("avcC"), avc_data);
CFDictionarySetValue(extensions, CFSTR("SampleDescriptionExtensionAtoms"), atoms);
rv = CMVideoFormatDescriptionCreate(NULL, // Use default allocator.
kCMVideoCodecType_H264,
mConfig.display_width,
mConfig.display_height,
extensions,
&mFormat);
if (rv != noErr) {
NS_ERROR("Couldn't create format description!");
return NS_ERROR_FAILURE;
}
// Contruct video decoder selection spec.
AutoCFRelease<CFMutableDictionaryRef> spec =
CFDictionaryCreateMutable(NULL, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
// FIXME: Enabling hardware acceleration causes crashes in
// VTDecompressionSessionCreate() with multiple videos. Bug 1055694
#if 0
// This key is supported (or ignored) but not declared prior to OSX 10.9.
AutoCFRelease<CFStringRef>
kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder =
CFStringCreateWithCString(NULL, "EnableHardwareAcceleratedVideoDecoder",
kCFStringEncodingUTF8);
CFDictionarySetValue(spec,
kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder,
kCFBooleanTrue);
#endif
// Contruct output configuration.
SInt32 PixelFormatTypeValue = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
AutoCFRelease<CFNumberRef> PixelFormatTypeNumber =
CFNumberCreate(kCFAllocatorDefault,
kCFNumberSInt32Type,
&PixelFormatTypeValue);
const void* outputKeys[] = { kCVPixelBufferPixelFormatTypeKey };
const void* outputValues[] = { PixelFormatTypeNumber };
static_assert(ArrayLength(outputKeys) == ArrayLength(outputValues),
"Non matching keys/values array size");
AutoCFRelease<CFDictionaryRef> outputConfiguration =
CFDictionaryCreate(kCFAllocatorDefault,
outputKeys,
outputValues,
ArrayLength(outputKeys),
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
VTDecompressionOutputCallbackRecord cb = { PlatformCallback, this };
rv = VTDecompressionSessionCreate(NULL, // Allocator.
mFormat,
spec, // Video decoder selection.
outputConfiguration, // Output video format.
&cb,
&mSession);
if (rv != noErr) {
NS_ERROR("Couldn't create decompression session!");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
