pthread/mpegvideo: detect and block attempts to init frames after setup.

[ffmpeg] / libavcodec / internal.h

diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 72a89441c2e870914e9e0d912461e01e20862086..dfef6eb31f405e11db4dcb7a5d7ef0e6de1a7789 100644 (file)
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -26,6 +26,7 @@
 
 #include <stdint.h>
 
+#include "libavutil/mathematics.h"
 #include "libavutil/pixfmt.h"
 #include "avcodec.h"
 
@@ -69,6 +70,12 @@ typedef struct AVCodecInternal {
      */
     int sample_count;
 #endif
+
+    /**
+     * temporary buffer used for encoders to store their bitstream
+     */
+    uint8_t *byte_buffer;
+    unsigned int byte_buffer_size;
 } AVCodecInternal;
 
 struct AVCodecDefault {
@@ -126,14 +133,30 @@ int avpriv_unlock_avformat(void);
  * ensure the output packet data is large enough, whether provided by the user
  * or allocated in this function.
  *
+ * @param avctx   the AVCodecContext of the encoder
  * @param avpkt   the AVPacket
  *                If avpkt->data is already set, avpkt->size is checked
  *                to ensure it is large enough.
  *                If avpkt->data is NULL, a new buffer is allocated.
+ *                avpkt->size is set to the specified size.
  *                All other AVPacket fields will be reset with av_init_packet().
  * @param size    the minimum required packet size
  * @return        0 on success, negative error code on failure
  */
+int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size);
+
 int ff_alloc_packet(AVPacket *avpkt, int size);
 
+/**
+ * Rescale from sample rate to AVCodecContext.time_base.
+ */
+static av_always_inline int64_t ff_samples_to_time_base(AVCodecContext *avctx,
+                                                        int64_t samples)
+{
+    return av_rescale_q(samples, (AVRational){ 1, avctx->sample_rate },
+                        avctx->time_base);
+}
+
+int ff_thread_can_start_frame(AVCodecContext *avctx);
+
 #endif /* AVCODEC_INTERNAL_H */