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 13deb871203efe41a0c67de82570aaf469eb5d2e..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"
 
@@ -61,6 +62,20 @@ typedef struct AVCodecInternal {
      * should be freed from the original context only.
      */
     int is_copy;
+
+#if FF_API_OLD_DECODE_AUDIO
+    /**
+     * Internal sample count used by avcodec_encode_audio() to fabricate pts.
+     * Can be removed along with avcodec_encode_audio().
+     */
+    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 {
@@ -96,7 +111,52 @@ unsigned int avpriv_toupper4(unsigned int x);
  */
 void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic);
 
+/**
+ * Remove and free all side data from packet.
+ */
+void ff_packet_free_side_data(AVPacket *pkt);
+
 int avpriv_lock_avformat(void);
 int avpriv_unlock_avformat(void);
 
+/**
+ * Maximum size in bytes of extradata.
+ * This value was chosen such that every bit of the buffer is
+ * addressable by a 32-bit signed integer as used by get_bits.
+ */
+#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - FF_INPUT_BUFFER_PADDING_SIZE)
+
+/**
+ * Check AVPacket size and/or allocate data.
+ *
+ * Encoders supporting AVCodec.encode2() can use this as a convenience to
+ * 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 */