[FFmpeg-devel] [PATCH] avcodec/vaapi_encode_h26x: passthrough A53 CC data as H264/HEVC SEI

[Aman Karmani <ffmpegagent@gmail.com>]

From: Aman Karmani <aman@tmm1.net>

Signed-off-by: Aman Karmani <aman@tmm1.net>
---
    avcodec/vaapi_encode_h26x: passthrough A53 CC data as H264/HEVC SEI

Published-As: https://github.com/ffstaging/FFmpeg/releases/tag/pr-ffstaging-46%2Ftmm1%2Fvaapi-a53cc-v1
Fetch-It-Via: git fetch https://github.com/ffstaging/FFmpeg pr-ffstaging-46/tmm1/vaapi-a53cc-v1
Pull-Request: https://github.com/ffstaging/FFmpeg/pull/46

 libavcodec/vaapi_encode_h264.c | 27 ++++++++++++++++++++++++++-
 libavcodec/vaapi_encode_h265.c | 27 ++++++++++++++++++++++++++-
 2 files changed, 52 insertions(+), 2 deletions(-)

diff --git a/libavcodec/vaapi_encode_h264.c b/libavcodec/vaapi_encode_h264.c
index b1b503b2a6..d22b38ab38 100644
--- a/libavcodec/vaapi_encode_h264.c
+++ b/libavcodec/vaapi_encode_h264.c
@@ -26,6 +26,7 @@
 #include "libavutil/internal.h"
 #include "libavutil/opt.h"
 
+#include "atsc_a53.h"
 #include "avcodec.h"
 #include "cbs.h"
 #include "cbs_h264.h"
@@ -40,6 +41,7 @@ enum {
     SEI_TIMING         = 0x01,
     SEI_IDENTIFIER     = 0x02,
     SEI_RECOVERY_POINT = 0x04,
+    SEI_A53_CC         = 0x08,
 };
 
 // Random (version 4) ISO 11578 UUID.
@@ -98,6 +100,8 @@ typedef struct VAAPIEncodeH264Context {
     H264RawSEIRecoveryPoint        sei_recovery_point;
     SEIRawUserDataUnregistered     sei_identifier;
     char                          *sei_identifier_string;
+    SEIRawUserDataRegistered       sei_a53cc;
+    void                          *sei_a53cc_data;
 
     int aud_needed;
     int sei_needed;
@@ -248,6 +252,13 @@ static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
             if (err < 0)
                 goto fail;
         }
+        if (priv->sei_needed & SEI_A53_CC) {
+            err = ff_cbs_sei_add_message(priv->cbc, au, 1,
+                                         SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35,
+                                         &priv->sei_a53cc, NULL);
+            if (err < 0)
+                goto fail;
+        }
 
         priv->sei_needed = 0;
 
@@ -607,7 +618,8 @@ static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
     VAAPIEncodePicture              *prev = pic->prev;
     VAAPIEncodeH264Picture         *hprev = prev ? prev->priv_data : NULL;
     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
-    int i;
+    int i, err;
+    size_t sei_a53cc_len;
 
     if (pic->type == PICTURE_TYPE_IDR) {
         av_assert0(pic->display_order == pic->encode_order);
@@ -681,6 +693,18 @@ static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
         priv->sei_needed |= SEI_RECOVERY_POINT;
     }
 
+    av_freep(&priv->sei_a53cc_data);
+    err = ff_alloc_a53_sei(pic->input_image, 0, &priv->sei_a53cc_data, &sei_a53cc_len);
+    if (err < 0)
+        return err;
+    if (priv->sei_a53cc_data != NULL) {
+        priv->sei_a53cc.itu_t_t35_country_code = 181;
+        priv->sei_a53cc.data = (uint8_t *)priv->sei_a53cc_data + 1;
+        priv->sei_a53cc.data_length = sei_a53cc_len - 1;
+
+        priv->sei_needed |= SEI_A53_CC;
+    }
+
     vpic->CurrPic = (VAPictureH264) {
         .picture_id          = pic->recon_surface,
         .frame_idx           = hpic->frame_num,
@@ -1226,6 +1250,7 @@ static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
     ff_cbs_fragment_free(&priv->current_access_unit);
     ff_cbs_close(&priv->cbc);
     av_freep(&priv->sei_identifier_string);
+    av_freep(&priv->sei_a53cc_data);
 
     return ff_vaapi_encode_close(avctx);
 }
diff --git a/libavcodec/vaapi_encode_h265.c b/libavcodec/vaapi_encode_h265.c
index 94b56c6578..3611bd6147 100644
--- a/libavcodec/vaapi_encode_h265.c
+++ b/libavcodec/vaapi_encode_h265.c
@@ -27,6 +27,7 @@
 #include "libavutil/opt.h"
 #include "libavutil/mastering_display_metadata.h"
 
+#include "atsc_a53.h"
 #include "avcodec.h"
 #include "cbs.h"
 #include "cbs_h265.h"
@@ -40,6 +41,7 @@
 enum {
     SEI_MASTERING_DISPLAY       = 0x08,
     SEI_CONTENT_LIGHT_LEVEL     = 0x10,
+    SEI_A53_CC                  = 0x20,
 };
 
 typedef struct VAAPIEncodeH265Picture {
@@ -84,6 +86,8 @@ typedef struct VAAPIEncodeH265Context {
 
     SEIRawMasteringDisplayColourVolume sei_mastering_display;
     SEIRawContentLightLevelInfo        sei_content_light_level;
+    SEIRawUserDataRegistered           sei_a53cc;
+    void                              *sei_a53cc_data;
 
     CodedBitstreamContext *cbc;
     CodedBitstreamFragment current_access_unit;
@@ -226,6 +230,13 @@ static int vaapi_encode_h265_write_extra_header(AVCodecContext *avctx,
             if (err < 0)
                 goto fail;
         }
+        if (priv->sei_needed & SEI_A53_CC) {
+            err = ff_cbs_sei_add_message(priv->cbc, au, 1,
+                                         SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35,
+                                         &priv->sei_a53cc, NULL);
+            if (err < 0)
+                goto fail;
+        }
 
         priv->sei_needed = 0;
 
@@ -759,7 +770,8 @@ static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,
     VAAPIEncodePicture              *prev = pic->prev;
     VAAPIEncodeH265Picture         *hprev = prev ? prev->priv_data : NULL;
     VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;
-    int i;
+    int i, err;
+    size_t sei_a53cc_len;
 
     if (pic->type == PICTURE_TYPE_IDR) {
         av_assert0(pic->display_order == pic->encode_order);
@@ -888,6 +900,18 @@ static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,
         }
     }
 
+    av_freep(&priv->sei_a53cc_data);
+    err = ff_alloc_a53_sei(pic->input_image, 0, &priv->sei_a53cc_data, &sei_a53cc_len);
+    if (err < 0)
+        return err;
+    if (priv->sei_a53cc_data != NULL) {
+        priv->sei_a53cc.itu_t_t35_country_code = 181;
+        priv->sei_a53cc.data = (uint8_t *)priv->sei_a53cc_data + 1;
+        priv->sei_a53cc.data_length = sei_a53cc_len - 1;
+
+        priv->sei_needed |= SEI_A53_CC;
+    }
+
     vpic->decoded_curr_pic = (VAPictureHEVC) {
         .picture_id    = pic->recon_surface,
         .pic_order_cnt = hpic->pic_order_cnt,
@@ -1355,6 +1379,7 @@ static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)
 
     ff_cbs_fragment_free(&priv->current_access_unit);
     ff_cbs_close(&priv->cbc);
+    av_freep(&priv->sei_a53cc_data);
 
     return ff_vaapi_encode_close(avctx);
 }

base-commit: 3bcec58535d395945a390bdc7af4048a7abc60eb
-- 
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