lavc: add generic-encode-layer private data

Move AVCodecInternal.intra_only_flag to it, should should not be visible
outside of encode.c.

4 files changed, 26 insertions, 10 deletions

diff --git a/libavcodec/avcodec.c b/libavcodec/avcodec.c
index aef2edce32..8ccc610227 100644
--- a/libavcodec/avcodec.c
+++ b/libavcodec/avcodec.c
@@ -152,7 +152,7 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
 
     avci = av_codec_is_decoder(codec) ?
         ff_decode_internal_alloc()    :
-        av_mallocz(sizeof(AVCodecInternal));
+        ff_encode_internal_alloc();
     if (!avci) {
         ret = AVERROR(ENOMEM);
         goto end;
diff --git a/libavcodec/avcodec_internal.h b/libavcodec/avcodec_internal.h
index f52f91e07c..9b93ff3d81 100644
--- a/libavcodec/avcodec_internal.h
+++ b/libavcodec/avcodec_internal.h
@@ -54,5 +54,6 @@ void ff_decode_flush_buffers(struct AVCodecContext *avctx);
 void ff_encode_flush_buffers(struct AVCodecContext *avctx);
 
 struct AVCodecInternal *ff_decode_internal_alloc(void);
+struct AVCodecInternal *ff_encode_internal_alloc(void);
 
 #endif // AVCODEC_AVCODEC_INTERNAL_H
diff --git a/libavcodec/encode.c b/libavcodec/encode.c
index 2620810476..6da5d86ea0 100644
--- a/libavcodec/encode.c
+++ b/libavcodec/encode.c
@@ -33,6 +33,22 @@
 #include "frame_thread_encoder.h"
 #include "internal.h"
 
+typedef struct EncodeContext {
+    AVCodecInternal avci;
+
+    /**
+     * This is set to AV_PKT_FLAG_KEY for encoders that encode intra-only
+     * formats (i.e. whose codec descriptor has AV_CODEC_PROP_INTRA_ONLY set).
+     * This is used to set said flag generically for said encoders.
+     */
+    int intra_only_flag;
+} EncodeContext;
+
+static EncodeContext *encode_ctx(AVCodecInternal *avci)
+{
+    return (EncodeContext*)avci;
+}
+
 int ff_alloc_packet(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
 {
     if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
@@ -372,7 +388,7 @@ static int encode_receive_packet_internal(AVCodecContext *avctx, AVPacket *avpkt
     } else
         ret = encode_simple_receive_packet(avctx, avpkt);
     if (ret >= 0)
-        avpkt->flags |= avci->intra_only_flag;
+        avpkt->flags |= encode_ctx(avci)->intra_only_flag;
 
     if (ret == AVERROR_EOF)
         avci->draining_done = 1;
@@ -680,6 +696,7 @@ static int encode_preinit_audio(AVCodecContext *avctx)
 int ff_encode_preinit(AVCodecContext *avctx)
 {
     AVCodecInternal *avci = avctx->internal;
+    EncodeContext     *ec = encode_ctx(avci);
     int ret = 0;
 
     if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
@@ -710,7 +727,7 @@ int ff_encode_preinit(AVCodecContext *avctx)
         avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4;
 
     if (avctx->codec_descriptor->props & AV_CODEC_PROP_INTRA_ONLY)
-        avctx->internal->intra_only_flag = AV_PKT_FLAG_KEY;
+        ec->intra_only_flag = AV_PKT_FLAG_KEY;
 
     if (ffcodec(avctx->codec)->cb_type == FF_CODEC_CB_TYPE_ENCODE) {
         avci->in_frame = av_frame_alloc();
@@ -795,3 +812,8 @@ void ff_encode_flush_buffers(AVCodecContext *avctx)
     if (avci->recon_frame)
         av_frame_unref(avci->recon_frame);
 }
+
+AVCodecInternal *ff_encode_internal_alloc(void)
+{
+    return av_mallocz(sizeof(EncodeContext));
+}
diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 0c1f0b82ea..497cd77f23 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -95,13 +95,6 @@ typedef struct AVCodecInternal {
     uint8_t *byte_buffer;
     unsigned int byte_buffer_size;
 
-    /**
-     * This is set to AV_PKT_FLAG_KEY for encoders that encode intra-only
-     * formats (i.e. whose codec descriptor has AV_CODEC_PROP_INTRA_ONLY set).
-     * This is used to set said flag generically for said encoders.
-     */
-    int intra_only_flag;
-
     void *frame_thread_encoder;
 
     /**