* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <CoreFoundation/CFNumber.h>
+#include <CoreFoundation/CFData.h>
+#include <CoreFoundation/CFString.h>
+
+#include "libavutil/avutil.h"
#include "h264.h"
-#include "h264data.h"
+#include "vda.h"
+
+/* Decoder callback that adds the VDA frame to the queue in display order. */
+static void vda_decoder_callback(void *vda_hw_ctx,
+ CFDictionaryRef user_info,
+ OSStatus status,
+ uint32_t infoFlags,
+ CVImageBufferRef image_buffer)
+{
+ struct vda_context *vda_ctx = vda_hw_ctx;
-#include "vda_internal.h"
+ if (!image_buffer)
+ return;
-/* This structure is used to store the bitstream of the current frame. */
-struct vda_picture_context {
- uint8_t *bitstream;
- int bitstream_size;
-};
+ if (vda_ctx->cv_pix_fmt_type != CVPixelBufferGetPixelFormatType(image_buffer))
+ return;
-static int start_frame(AVCodecContext *avctx,
- av_unused const uint8_t *buffer,
- av_unused uint32_t size)
+ vda_ctx->cv_buffer = CVPixelBufferRetain(image_buffer);
+}
+
+static int vda_sync_decode(struct vda_context *vda_ctx)
+{
+ OSStatus status;
+ CFDataRef coded_frame;
+ uint32_t flush_flags = 1 << 0; ///< kVDADecoderFlush_emitFrames
+
+ coded_frame = CFDataCreate(kCFAllocatorDefault,
+ vda_ctx->priv_bitstream,
+ vda_ctx->priv_bitstream_size);
+
+ status = VDADecoderDecode(vda_ctx->decoder, 0, coded_frame, NULL);
+
+ if (kVDADecoderNoErr == status)
+ status = VDADecoderFlush(vda_ctx->decoder, flush_flags);
+
+ CFRelease(coded_frame);
+
+ return status;
+}
+
+
+static int vda_h264_start_frame(AVCodecContext *avctx,
+ av_unused const uint8_t *buffer,
+ av_unused uint32_t size)
{
- const H264Context *h = avctx->priv_data;
struct vda_context *vda_ctx = avctx->hwaccel_context;
- struct vda_picture_context *pic_ctx = h->s.current_picture_ptr->f.hwaccel_picture_private;
if (!vda_ctx->decoder)
return -1;
- pic_ctx->bitstream = NULL;
- pic_ctx->bitstream_size = 0;
+ vda_ctx->priv_bitstream_size = 0;
return 0;
}
-static int decode_slice(AVCodecContext *avctx,
- const uint8_t *buffer,
- uint32_t size)
+static int vda_h264_decode_slice(AVCodecContext *avctx,
+ const uint8_t *buffer,
+ uint32_t size)
{
- H264Context *h = avctx->priv_data;
struct vda_context *vda_ctx = avctx->hwaccel_context;
- struct vda_picture_context *pic_ctx = h->s.current_picture_ptr->f.hwaccel_picture_private;
void *tmp;
if (!vda_ctx->decoder)
return -1;
- tmp = av_realloc(pic_ctx->bitstream, pic_ctx->bitstream_size+size+4);
+ tmp = av_fast_realloc(vda_ctx->priv_bitstream,
+ &vda_ctx->priv_allocated_size,
+ vda_ctx->priv_bitstream_size + size + 4);
if (!tmp)
return AVERROR(ENOMEM);
- pic_ctx->bitstream = tmp;
+ vda_ctx->priv_bitstream = tmp;
- AV_WB32(pic_ctx->bitstream + pic_ctx->bitstream_size, size);
- memcpy(pic_ctx->bitstream + pic_ctx->bitstream_size + 4, buffer, size);
+ AV_WB32(vda_ctx->priv_bitstream + vda_ctx->priv_bitstream_size, size);
+ memcpy(vda_ctx->priv_bitstream + vda_ctx->priv_bitstream_size + 4, buffer, size);
- pic_ctx->bitstream_size += size + 4;
+ vda_ctx->priv_bitstream_size += size + 4;
return 0;
}
-static int end_frame(AVCodecContext *avctx)
+static int vda_h264_end_frame(AVCodecContext *avctx)
{
H264Context *h = avctx->priv_data;
struct vda_context *vda_ctx = avctx->hwaccel_context;
- struct vda_picture_context *pic_ctx = h->s.current_picture_ptr->f.hwaccel_picture_private;
- AVFrame *frame = &h->s.current_picture_ptr->f;
+ AVFrame *frame = &h->cur_pic_ptr->f;
int status;
- if (!vda_ctx->decoder || !pic_ctx->bitstream)
+ if (!vda_ctx->decoder || !vda_ctx->priv_bitstream)
return -1;
- status = ff_vda_decoder_decode(vda_ctx, pic_ctx->bitstream,
- pic_ctx->bitstream_size,
- frame->reordered_opaque);
+ status = vda_sync_decode(vda_ctx);
+ frame->data[3] = (void*)vda_ctx->cv_buffer;
if (status)
av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%d)\n", status);
- av_freep(&pic_ctx->bitstream);
+ return status;
+}
+
+int ff_vda_create_decoder(struct vda_context *vda_ctx,
+ uint8_t *extradata,
+ int extradata_size)
+{
+ OSStatus status = kVDADecoderNoErr;
+ CFNumberRef height;
+ CFNumberRef width;
+ CFNumberRef format;
+ CFDataRef avc_data;
+ CFMutableDictionaryRef config_info;
+ CFMutableDictionaryRef buffer_attributes;
+ CFMutableDictionaryRef io_surface_properties;
+ CFNumberRef cv_pix_fmt;
+
+ /* 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 (extradata_size >= 4 && (extradata[4] & 0x03) != 0x03) {
+ uint8_t *rw_extradata;
+
+ if (!(rw_extradata = av_malloc(extradata_size)))
+ return AVERROR(ENOMEM);
+
+ memcpy(rw_extradata, extradata, extradata_size);
+
+ rw_extradata[4] |= 0x03;
+
+ avc_data = CFDataCreate(kCFAllocatorDefault, rw_extradata, extradata_size);
+
+ av_freep(&rw_extradata);
+ } else {
+ avc_data = CFDataCreate(kCFAllocatorDefault, extradata, extradata_size);
+ }
+
+ config_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
+ 4,
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+
+ height = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->height);
+ width = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->width);
+ format = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->format);
+
+ CFDictionarySetValue(config_info, kVDADecoderConfiguration_Height, height);
+ CFDictionarySetValue(config_info, kVDADecoderConfiguration_Width, width);
+ CFDictionarySetValue(config_info, kVDADecoderConfiguration_SourceFormat, format);
+ CFDictionarySetValue(config_info, kVDADecoderConfiguration_avcCData, avc_data);
+
+ buffer_attributes = CFDictionaryCreateMutable(kCFAllocatorDefault,
+ 2,
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+ io_surface_properties = CFDictionaryCreateMutable(kCFAllocatorDefault,
+ 0,
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+ cv_pix_fmt = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberSInt32Type,
+ &vda_ctx->cv_pix_fmt_type);
+ CFDictionarySetValue(buffer_attributes,
+ kCVPixelBufferPixelFormatTypeKey,
+ cv_pix_fmt);
+ CFDictionarySetValue(buffer_attributes,
+ kCVPixelBufferIOSurfacePropertiesKey,
+ io_surface_properties);
+
+ status = VDADecoderCreate(config_info,
+ buffer_attributes,
+ vda_decoder_callback,
+ vda_ctx,
+ &vda_ctx->decoder);
+
+ CFRelease(height);
+ CFRelease(width);
+ CFRelease(format);
+ CFRelease(avc_data);
+ CFRelease(config_info);
+ CFRelease(io_surface_properties);
+ CFRelease(cv_pix_fmt);
+ CFRelease(buffer_attributes);
+
+ return status;
+}
+
+int ff_vda_destroy_decoder(struct vda_context *vda_ctx)
+{
+ OSStatus status = kVDADecoderNoErr;
+
+ if (vda_ctx->decoder)
+ status = VDADecoderDestroy(vda_ctx->decoder);
+
+ av_freep(&vda_ctx->priv_bitstream);
return status;
}
AVHWAccel ff_h264_vda_hwaccel = {
.name = "h264_vda",
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_H264,
- .pix_fmt = PIX_FMT_VDA_VLD,
- .start_frame = start_frame,
- .decode_slice = decode_slice,
- .end_frame = end_frame,
- .priv_data_size = sizeof(struct vda_picture_context),
+ .id = AV_CODEC_ID_H264,
+ .pix_fmt = AV_PIX_FMT_VDA_VLD,
+ .start_frame = vda_h264_start_frame,
+ .decode_slice = vda_h264_decode_slice,
+ .end_frame = vda_h264_end_frame,
};
projects / ffmpeg / blobdiff