cbs: Add an explicit type for coded bitstream unit types

[ffmpeg] / libavcodec / internal.h

diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 6aaaf4c2cb7e03d9715d086aa28d56c0f6d51d1b..a619e977f6eecc147ae984f1344bd5abfa767329 100644 (file)
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -33,8 +33,52 @@
 #include "avcodec.h"
 #include "config.h"
 
+/**
+ * The codec does not modify any global variables in the init function,
+ * allowing to call the init function without locking any global mutexes.
+ */
+#define FF_CODEC_CAP_INIT_THREADSAFE        (1 << 0)
+/**
+ * The codec allows calling the close function for deallocation even if
+ * the init function returned a failure. Without this capability flag, a
+ * codec does such cleanup internally when returning failures from the
+ * init function and does not expect the close function to be called at
+ * all.
+ */
+#define FF_CODEC_CAP_INIT_CLEANUP           (1 << 1)
+/**
+ * Decoders marked with FF_CODEC_CAP_SETS_PKT_DTS want to set
+ * AVFrame.pkt_dts manually. If the flag is set, utils.c won't overwrite
+ * this field. If it's unset, utils.c tries to guess the pkt_dts field
+ * from the input AVPacket.
+ */
+#define FF_CODEC_CAP_SETS_PKT_DTS           (1 << 2)
+/**
+ * The decoder sets the cropping fields in the output frames manually.
+ * If this cap is set, the generic code will initialize output frame
+ * dimensions to coded rather than display values.
+ */
+#define FF_CODEC_CAP_EXPORTS_CROPPING       (1 << 3)
+
+#ifdef DEBUG
+#   define ff_dlog(ctx, ...) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__)
+#else
+#   define ff_dlog(ctx, ...) do { } while (0)
+#endif
+
+#ifdef TRACE
+#   define ff_tlog(ctx, ...) av_log(ctx, AV_LOG_TRACE, __VA_ARGS__)
+#else
+#   define ff_tlog(ctx, ...) do { } while (0)
+#endif
+
+
+#define FF_DEFAULT_QUANT_BIAS 999999
+
 #define FF_SANE_NB_CHANNELS 63U
 
+#define FF_SIGNBIT(x) (x >> CHAR_BIT * sizeof(x) - 1)
+
 typedef struct FramePool {
     /**
      * Pools for each data plane. For audio all the planes have the same size,
@@ -54,6 +98,16 @@ typedef struct FramePool {
     int samples;
 } FramePool;
 
+typedef struct DecodeSimpleContext {
+    AVPacket *in_pkt;
+    AVFrame  *out_frame;
+} DecodeSimpleContext;
+
+typedef struct DecodeFilterContext {
+    AVBSFContext **bsfs;
+    int         nb_bsfs;
+} DecodeFilterContext;
+
 typedef struct AVCodecInternal {
     /**
      * Whether the parent AVCodecContext is a copy of the context which had
@@ -90,16 +144,42 @@ typedef struct AVCodecInternal {
 
     void *thread_ctx;
 
+    DecodeSimpleContext ds;
+    DecodeFilterContext filter;
+
     /**
-     * Current packet as passed into the decoder, to avoid having to pass the
-     * packet into every function.
+     * Properties (timestamps+side data) extracted from the last packet passed
+     * for decoding.
      */
-    AVPacket *pkt;
+    AVPacket *last_pkt_props;
 
     /**
      * hwaccel-specific private data
      */
     void *hwaccel_priv_data;
+
+    /**
+     * checks API usage: after codec draining, flush is required to resume operation
+     */
+    int draining;
+
+    /**
+     * buffers for using new encode/decode API through legacy API
+     */
+    AVPacket *buffer_pkt;
+    int buffer_pkt_valid; // encoding: packet without data can be valid
+    AVFrame *buffer_frame;
+    int draining_done;
+    /* set to 1 when the caller is using the old decoding API */
+    int compat_decode;
+    int compat_decode_warned;
+    /* this variable is set by the decoder internals to signal to the old
+     * API compat wrappers the amount of data consumed from the last packet */
+    size_t compat_decode_consumed;
+    /* when a partial packet has been consumed, this stores the remaining size
+     * of the packet (that should be submitted in the next decode call */
+    size_t compat_decode_partial_size;
+    AVFrame *compat_decode_frame;
 } AVCodecInternal;
 
 struct AVCodecDefault {
@@ -123,7 +203,7 @@ int avpriv_unlock_avformat(void);
  * 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)
+#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - AV_INPUT_BUFFER_PADDING_SIZE)
 
 /**
  * Check AVPacket size and/or allocate data.
@@ -176,6 +256,12 @@ const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
  */
 int ff_set_dimensions(AVCodecContext *s, int width, int height);
 
+/**
+ * Check that the provided sample aspect ratio is valid and set it on the codec
+ * context.
+ */
+int ff_set_sar(AVCodecContext *avctx, AVRational sar);
+
 /**
  * Add or update AV_FRAME_DATA_MATRIXENCODING side data.
  */
@@ -186,6 +272,12 @@ int ff_side_data_update_matrix_encoding(AVFrame *frame,
  * Select the (possibly hardware accelerated) pixel format.
  * This is a wrapper around AVCodecContext.get_format() and should be used
  * instead of calling get_format() directly.
+ *
+ * The list of pixel formats must contain at least one valid entry, and is
+ * terminated with AV_PIX_FMT_NONE.  If it is possible to decode to software,
+ * the last entry in the list must be the most accurate software format.
+ * If it is not possible to decode to software, AVCodecContext.sw_pix_fmt
+ * must be set before calling this function.
  */
 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt);
 
@@ -194,4 +286,15 @@ int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt);
  */
 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame);
 
+/**
+ * Add a CPB properties side data to an encoding context.
+ */
+AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx);
+
+#if defined(_WIN32) && CONFIG_SHARED && !defined(BUILDING_avcodec)
+#    define av_export_avcodec __declspec(dllimport)
+#else
+#    define av_export_avcodec
+#endif
+
 #endif /* AVCODEC_INTERNAL_H */