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Diffstat (limited to 'ffmpeg1/libavcodec/vda_h264_dec.c')
-rw-r--r--ffmpeg1/libavcodec/vda_h264_dec.c258
1 files changed, 0 insertions, 258 deletions
diff --git a/ffmpeg1/libavcodec/vda_h264_dec.c b/ffmpeg1/libavcodec/vda_h264_dec.c
deleted file mode 100644
index d6c8f37..0000000
--- a/ffmpeg1/libavcodec/vda_h264_dec.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
- * Copyright (c) 2012, Xidorn Quan
- *
- * 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
- */
-
-/**
- * @file
- * H.264 decoder via VDA
- * @author Xidorn Quan <quanxunzhen@gmail.com>
- */
-
-#include <string.h>
-#include <CoreFoundation/CoreFoundation.h>
-
-#include "vda.h"
-#include "h264.h"
-#include "avcodec.h"
-
-#ifndef kCFCoreFoundationVersionNumber10_7
-#define kCFCoreFoundationVersionNumber10_7 635.00
-#endif
-
-extern AVCodec ff_h264_decoder, ff_h264_vda_decoder;
-
-static const enum AVPixelFormat vda_pixfmts_prior_10_7[] = {
- AV_PIX_FMT_UYVY422,
- AV_PIX_FMT_YUV420P,
- AV_PIX_FMT_NONE
-};
-
-static const enum AVPixelFormat vda_pixfmts[] = {
- AV_PIX_FMT_UYVY422,
- AV_PIX_FMT_YUYV422,
- AV_PIX_FMT_NV12,
- AV_PIX_FMT_YUV420P,
- AV_PIX_FMT_NONE
-};
-
-typedef struct {
- H264Context h264ctx;
- int h264_initialized;
- struct vda_context vda_ctx;
- enum AVPixelFormat pix_fmt;
-} VDADecoderContext;
-
-static enum AVPixelFormat get_format(struct AVCodecContext *avctx,
- const enum AVPixelFormat *fmt)
-{
- return AV_PIX_FMT_VDA_VLD;
-}
-
-static int get_buffer(AVCodecContext *avctx, AVFrame *pic)
-{
- pic->type = FF_BUFFER_TYPE_USER;
- pic->data[0] = (void *)1;
- return 0;
-}
-
-static void release_buffer(AVCodecContext *avctx, AVFrame *pic)
-{
- int i;
-
- CVPixelBufferRef cv_buffer = (CVPixelBufferRef)pic->data[3];
- CVPixelBufferUnlockBaseAddress(cv_buffer, 0);
- CVPixelBufferRelease(cv_buffer);
-
- for (i = 0; i < 4; i++)
- pic->data[i] = NULL;
-}
-
-static int vdadec_decode(AVCodecContext *avctx,
- void *data, int *got_frame, AVPacket *avpkt)
-{
- VDADecoderContext *ctx = avctx->priv_data;
- AVFrame *pic = data;
- int ret;
-
- ret = ff_h264_decoder.decode(avctx, data, got_frame, avpkt);
- if (*got_frame) {
- CVPixelBufferRef cv_buffer = (CVPixelBufferRef)pic->data[3];
- CVPixelBufferLockBaseAddress(cv_buffer, 0);
- pic->format = ctx->pix_fmt;
- if (CVPixelBufferIsPlanar(cv_buffer)) {
- int i, count = CVPixelBufferGetPlaneCount(cv_buffer);
- av_assert0(count < 4);
- for (i = 0; i < count; i++) {
- pic->data[i] = CVPixelBufferGetBaseAddressOfPlane(cv_buffer, i);
- pic->linesize[i] = CVPixelBufferGetBytesPerRowOfPlane(cv_buffer, i);
- }
- } else {
- pic->data[0] = CVPixelBufferGetBaseAddress(cv_buffer);
- pic->linesize[0] = CVPixelBufferGetBytesPerRow(cv_buffer);
- }
- }
- avctx->pix_fmt = ctx->pix_fmt;
-
- return ret;
-}
-
-static av_cold int vdadec_close(AVCodecContext *avctx)
-{
- VDADecoderContext *ctx = avctx->priv_data;
- /* release buffers and decoder */
- ff_vda_destroy_decoder(&ctx->vda_ctx);
- /* close H.264 decoder */
- if (ctx->h264_initialized)
- ff_h264_decoder.close(avctx);
- return 0;
-}
-
-static av_cold int check_format(AVCodecContext *avctx)
-{
- AVCodecParserContext *parser;
- uint8_t *pout;
- int psize;
- int index;
- H264Context *h;
- int ret = -1;
-
- /* init parser & parse file */
- parser = av_parser_init(avctx->codec->id);
- if (!parser) {
- av_log(avctx, AV_LOG_ERROR, "Failed to open H.264 parser.\n");
- goto final;
- }
- parser->flags = PARSER_FLAG_COMPLETE_FRAMES;
- index = av_parser_parse2(parser, avctx, &pout, &psize, NULL, 0, 0, 0, 0);
- if (index < 0) {
- av_log(avctx, AV_LOG_ERROR, "Failed to parse this file.\n");
- goto release_parser;
- }
-
- /* check if support */
- h = parser->priv_data;
- switch (h->sps.bit_depth_luma) {
- case 8:
- if (!CHROMA444 && !CHROMA422) {
- // only this will H.264 decoder switch to hwaccel
- ret = 0;
- break;
- }
- default:
- av_log(avctx, AV_LOG_ERROR, "Unsupported file.\n");
- }
-
-release_parser:
- av_parser_close(parser);
-
-final:
- return ret;
-}
-
-static av_cold int vdadec_init(AVCodecContext *avctx)
-{
- VDADecoderContext *ctx = avctx->priv_data;
- struct vda_context *vda_ctx = &ctx->vda_ctx;
- OSStatus status;
- int ret;
-
- ctx->h264_initialized = 0;
-
- /* init pix_fmts of codec */
- if (!ff_h264_vda_decoder.pix_fmts) {
- if (kCFCoreFoundationVersionNumber < kCFCoreFoundationVersionNumber10_7)
- ff_h264_vda_decoder.pix_fmts = vda_pixfmts_prior_10_7;
- else
- ff_h264_vda_decoder.pix_fmts = vda_pixfmts;
- }
-
- /* check if VDA supports this file */
- if (check_format(avctx) < 0)
- goto failed;
-
- /* init vda */
- memset(vda_ctx, 0, sizeof(struct vda_context));
- vda_ctx->width = avctx->width;
- vda_ctx->height = avctx->height;
- vda_ctx->format = 'avc1';
- vda_ctx->use_sync_decoding = 1;
- ctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts);
- switch (ctx->pix_fmt) {
- case AV_PIX_FMT_UYVY422:
- vda_ctx->cv_pix_fmt_type = '2vuy';
- break;
- case AV_PIX_FMT_YUYV422:
- vda_ctx->cv_pix_fmt_type = 'yuvs';
- break;
- case AV_PIX_FMT_NV12:
- vda_ctx->cv_pix_fmt_type = '420v';
- break;
- case AV_PIX_FMT_YUV420P:
- vda_ctx->cv_pix_fmt_type = 'y420';
- break;
- default:
- av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format: %d\n", avctx->pix_fmt);
- goto failed;
- }
- status = ff_vda_create_decoder(vda_ctx,
- avctx->extradata, avctx->extradata_size);
- if (status != kVDADecoderNoErr) {
- av_log(avctx, AV_LOG_ERROR,
- "Failed to init VDA decoder: %d.\n", status);
- goto failed;
- }
- avctx->hwaccel_context = vda_ctx;
-
- /* changes callback functions */
- avctx->get_format = get_format;
- avctx->get_buffer = get_buffer;
- avctx->release_buffer = release_buffer;
-
- /* init H.264 decoder */
- ret = ff_h264_decoder.init(avctx);
- if (ret < 0) {
- av_log(avctx, AV_LOG_ERROR, "Failed to open H.264 decoder.\n");
- goto failed;
- }
- ctx->h264_initialized = 1;
-
- return 0;
-
-failed:
- vdadec_close(avctx);
- return -1;
-}
-
-static void vdadec_flush(AVCodecContext *avctx)
-{
- return ff_h264_decoder.flush(avctx);
-}
-
-AVCodec ff_h264_vda_decoder = {
- .name = "h264_vda",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_H264,
- .priv_data_size = sizeof(VDADecoderContext),
- .init = vdadec_init,
- .close = vdadec_close,
- .decode = vdadec_decode,
- .capabilities = CODEC_CAP_DELAY,
- .flush = vdadec_flush,
- .long_name = NULL_IF_CONFIG_SMALL("H.264 (VDA acceleration)"),
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 16:23:36 +0000