From e72e8c5a1df61447ac7af750531e96e8b62d02ba Mon Sep 17 00:00:00 2001
From: Hendrik Leppkes <h.leppkes@gmail.com>
Date: Sun, 25 Jan 2015 12:58:48 +0100
Subject: hevc: add hwaccel hooks

Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
 libavcodec/hevc.c | 38 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

(limited to 'libavcodec/hevc.c')

diff --git a/libavcodec/hevc.c b/libavcodec/hevc.c
index 0148aba658..bf7203a9c0 100644
--- a/libavcodec/hevc.c
+++ b/libavcodec/hevc.c
@@ -385,6 +385,8 @@ static int decode_lt_rps(HEVCContext *s, LongTermRPS *rps, GetBitContext *gb)
 
 static int set_sps(HEVCContext *s, const HEVCSPS *sps)
 {
+    #define HWACCEL_MAX (0)
+    enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
     int ret;
     unsigned int num = 0, den = 0;
 
@@ -397,9 +399,16 @@ static int set_sps(HEVCContext *s, const HEVCSPS *sps)
     s->avctx->coded_height        = sps->height;
     s->avctx->width               = sps->output_width;
     s->avctx->height              = sps->output_height;
-    s->avctx->pix_fmt             = sps->pix_fmt;
     s->avctx->has_b_frames        = sps->temporal_layer[sps->max_sub_layers - 1].num_reorder_pics;
 
+    *fmt++ = sps->pix_fmt;
+    *fmt = AV_PIX_FMT_NONE;
+
+    ret = ff_get_format(s->avctx, pix_fmts);
+    if (ret < 0)
+        goto fail;
+    s->avctx->pix_fmt = ret;
+
     ff_set_sar(s->avctx, sps->vui.sar);
 
     if (sps->vui.video_signal_type_present_flag)
@@ -422,7 +431,7 @@ static int set_sps(HEVCContext *s, const HEVCSPS *sps)
     ff_hevc_dsp_init (&s->hevcdsp, sps->bit_depth);
     ff_videodsp_init (&s->vdsp,    sps->bit_depth);
 
-    if (sps->sao_enabled) {
+    if (sps->sao_enabled && !s->avctx->hwaccel) {
         av_frame_unref(s->tmp_frame);
         ret = ff_get_buffer(s->avctx, s->tmp_frame, AV_GET_BUFFER_FLAG_REF);
         if (ret < 0)
@@ -2571,6 +2580,17 @@ static int decode_nal_unit(HEVCContext *s, const HEVCNAL *nal)
             }
         }
 
+        if (s->sh.first_slice_in_pic_flag && s->avctx->hwaccel) {
+            ret = s->avctx->hwaccel->start_frame(s->avctx, NULL, 0);
+            if (ret < 0)
+                goto fail;
+        }
+
+        if (s->avctx->hwaccel) {
+            ret = s->avctx->hwaccel->decode_slice(s->avctx, nal->raw_data, nal->raw_size);
+            if (ret < 0)
+                goto fail;
+        } else {
         ctb_addr_ts = hls_slice_data(s);
         if (ctb_addr_ts >= (s->sps->ctb_width * s->sps->ctb_height)) {
             s->is_decoded = 1;
@@ -2584,6 +2604,7 @@ static int decode_nal_unit(HEVCContext *s, const HEVCNAL *nal)
             ret = ctb_addr_ts;
             goto fail;
         }
+        }
         break;
     case NAL_EOS_NUT:
     case NAL_EOB_NUT:
@@ -2891,6 +2912,11 @@ static int hevc_decode_frame(AVCodecContext *avctx, void *data, int *got_output,
     if (ret < 0)
         return ret;
 
+    if (avctx->hwaccel) {
+        if (s->ref && avctx->hwaccel->end_frame(avctx) < 0)
+            av_log(avctx, AV_LOG_ERROR,
+                   "hardware accelerator failed to decode picture\n");
+    } else {
     /* verify the SEI checksum */
     if (avctx->err_recognition & AV_EF_CRCCHECK && s->is_decoded &&
         s->is_md5) {
@@ -2900,6 +2926,7 @@ static int hevc_decode_frame(AVCodecContext *avctx, void *data, int *got_output,
             return ret;
         }
     }
+    }
     s->is_md5 = 0;
 
     if (s->is_decoded) {
@@ -2941,6 +2968,13 @@ static int hevc_ref_frame(HEVCContext *s, HEVCFrame *dst, HEVCFrame *src)
     dst->flags      = src->flags;
     dst->sequence   = src->sequence;
 
+    if (src->hwaccel_picture_private) {
+        dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
+        if (!dst->hwaccel_priv_buf)
+            goto fail;
+        dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
+    }
+
     return 0;
 fail:
     ff_hevc_unref_frame(s, dst, ~0);
-- 
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