1 files changed, 248 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/internal.h b/media/ffvpx/libavcodec/internal.h
new file mode 100644
index 0000000000..76a6ea6bc6
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+++ b/media/ffvpx/libavcodec/internal.h
@@ -0,0 +1,248 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * common internal api header.
+ */
+
+#ifndef AVCODEC_INTERNAL_H
+#define AVCODEC_INTERNAL_H
+
+#include <stdint.h>
+
+#include "libavutil/buffer.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/pixfmt.h"
+#include "avcodec.h"
+#include "config.h"
+
+#if CONFIG_LCMS2
+# include "fflcms2.h"
+#endif
+
+#define FF_SANE_NB_CHANNELS 512U
+
+#if HAVE_SIMD_ALIGN_64
+#   define STRIDE_ALIGN 64 /* AVX-512 */
+#elif HAVE_SIMD_ALIGN_32
+#   define STRIDE_ALIGN 32
+#elif HAVE_SIMD_ALIGN_16
+#   define STRIDE_ALIGN 16
+#else
+#   define STRIDE_ALIGN 8
+#endif
+
+typedef struct AVCodecInternal {
+    /**
+     * When using frame-threaded decoding, this field is set for the first
+     * worker thread (e.g. to decode extradata just once).
+     */
+    int is_copy;
+
+    /**
+     * An audio frame with less than required samples has been submitted (and
+     * potentially padded with silence). Reject all subsequent frames.
+     */
+    int last_audio_frame;
+
+    /**
+     * Audio encoders can set this flag during init to indicate that they
+     * want the small last frame to be padded to a multiple of pad_samples.
+     */
+    int pad_samples;
+
+    AVBufferRef *pool;
+
+    void *thread_ctx;
+
+    /**
+     * This packet is used to hold the packet given to decoders
+     * implementing the .decode API; it is unused by the generic
+     * code for decoders implementing the .receive_frame API and
+     * may be freely used (but not freed) by them with the caveat
+     * that the packet will be unreferenced generically in
+     * avcodec_flush_buffers().
+     */
+    AVPacket *in_pkt;
+    struct AVBSFContext *bsf;
+
+    /**
+     * Properties (timestamps+side data) extracted from the last packet passed
+     * for decoding.
+     */
+    AVPacket *last_pkt_props;
+    struct AVFifo *pkt_props;
+
+    /**
+     * temporary buffer used for encoders to store their bitstream
+     */
+    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;
+
+    /**
+     * The input frame is stored here for encoders implementing the simple
+     * encode API.
+     *
+     * Not allocated in other cases.
+     */
+    AVFrame *in_frame;
+
+    /**
+     * When the AV_CODEC_FLAG_RECON_FRAME flag is used. the encoder should store
+     * here the reconstructed frame corresponding to the last returned packet.
+     *
+     * Not allocated in other cases.
+     */
+    AVFrame *recon_frame;
+
+    /**
+     * If this is set, then FFCodec->close (if existing) needs to be called
+     * for the parent AVCodecContext.
+     */
+    int needs_close;
+
+    /**
+     * Number of audio samples to skip at the start of the next decoded frame
+     */
+    int skip_samples;
+
+    /**
+     * hwaccel-specific private data
+     */
+    void *hwaccel_priv_data;
+
+    /**
+     * checks API usage: after codec draining, flush is required to resume operation
+     */
+    int draining;
+
+    /**
+     * Temporary buffers for newly received or not yet output packets/frames.
+     */
+    AVPacket *buffer_pkt;
+    AVFrame *buffer_frame;
+    int draining_done;
+
+    int showed_multi_packet_warning;
+
+    /* to prevent infinite loop on errors when draining */
+    int nb_draining_errors;
+
+    /* used when avctx flag AV_CODEC_FLAG_DROPCHANGED is set */
+    int changed_frames_dropped;
+    int initial_format;
+    int initial_width, initial_height;
+    int initial_sample_rate;
+    AVChannelLayout initial_ch_layout;
+
+#if CONFIG_LCMS2
+    FFIccContext icc; /* used to read and write embedded ICC profiles */
+#endif
+} AVCodecInternal;
+
+/**
+ * Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
+ * If there is no such matching pair then size is returned.
+ */
+int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b);
+
+unsigned int ff_toupper4(unsigned int x);
+
+void ff_color_frame(AVFrame *frame, const int color[4]);
+
+/**
+ * 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) - AV_INPUT_BUFFER_PADDING_SIZE)
+
+/**
+ * 2^(x) for integer x
+ * @return correctly rounded float
+ */
+static av_always_inline float ff_exp2fi(int x) {
+    /* Normal range */
+    if (-126 <= x && x <= 128)
+        return av_int2float((x+127) << 23);
+    /* Too large */
+    else if (x > 128)
+        return INFINITY;
+    /* Subnormal numbers */
+    else if (x > -150)
+        return av_int2float(1 << (x+149));
+    /* Negligibly small */
+    else
+        return 0;
+}
+
+int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx);
+
+int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec);
+
+/**
+ * Add a CPB properties side data to an encoding context.
+ */
+AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx);
+
+/**
+ * Check AVFrame for S12M timecode side data and allocate and fill TC SEI message with timecode info
+ *
+ * @param frame      Raw frame to get S12M timecode side data from
+ * @param rate       The frame rate
+ * @param prefix_len Number of bytes to allocate before SEI message
+ * @param data       Pointer to a variable to store allocated memory
+ *                   Upon return the variable will hold NULL on error or if frame has no S12M timecode info.
+ *                   Otherwise it will point to prefix_len uninitialized bytes followed by
+ *                   *sei_size SEI message
+ * @param sei_size   Pointer to a variable to store generated SEI message length
+ * @return           Zero on success, negative error code on failure
+ */
+int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len,
+                     void **data, size_t *sei_size);
+
+/**
+ * Get an estimated video bitrate based on frame size, frame rate and coded
+ * bits per pixel.
+ */
+int64_t ff_guess_coded_bitrate(AVCodecContext *avctx);
+
+/**
+ * Check if a value is in the list. If not, return the default value
+ *
+ * @param ctx                Context for the log msg
+ * @param val_name           Name of the checked value, for log msg
+ * @param array_valid_values Array of valid int, ended with INT_MAX
+ * @param default_value      Value return if checked value is not in the array
+ * @return                   Value or default_value.
+ */
+int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
+                                const int * array_valid_values, int default_value);
+
+#endif /* AVCODEC_INTERNAL_H */