avconv: split option parsing into a separate file.

Makefile

@@ -60,6 +60,7 @@ PROGS-$(CONFIG_AVSERVER) += avserver
 
 PROGS      := $(PROGS-yes:%=%$(EXESUF))
 OBJS        = cmdutils.o
+OBJS-avconv = avconv_opt.o
 TESTTOOLS   = audiogen videogen rotozoom tiny_psnr base64
 HOSTPROGS  := $(TESTTOOLS:%=tests/%) doc/print_options
 TOOLS       = qt-faststart trasher

avconv.h

+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCONV_H
+#define AVCONV_H
+
+#include "config.h"
+
+#include <stdint.h>
+#include <stdio.h>
+
+#if HAVE_PTHREADS
+#include <pthread.h>
+#endif
+
+#include "cmdutils.h"
+
+#include "libavformat/avformat.h"
+#include "libavformat/avio.h"
+
+#include "libavcodec/avcodec.h"
+
+#include "libavfilter/avfilter.h"
+#include "libavfilter/avfiltergraph.h"
+
+#include "libavutil/avutil.h"
+#include "libavutil/dict.h"
+#include "libavutil/fifo.h"
+#include "libavutil/pixfmt.h"
+#include "libavutil/rational.h"
+
+#define VSYNC_AUTO       -1
+#define VSYNC_PASSTHROUGH 0
+#define VSYNC_CFR         1
+#define VSYNC_VFR         2
+
+/* select an input stream for an output stream */
+typedef struct StreamMap {
+    int disabled;           /** 1 is this mapping is disabled by a negative map */
+    int file_index;
+    int stream_index;
+    int sync_file_index;
+    int sync_stream_index;
+    char *linklabel;       /** name of an output link, for mapping lavfi outputs */
+} StreamMap;
+
+/**
+ * select an input file for an output file
+ */
+typedef struct MetadataMap {
+    int  file;      ///< file index
+    char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
+    int  index;     ///< stream/chapter/program number
+} MetadataMap;
+
+typedef struct OptionsContext {
+    /* input/output options */
+    int64_t start_time;
+    const char *format;
+
+    SpecifierOpt *codec_names;
+    int        nb_codec_names;
+    SpecifierOpt *audio_channels;
+    int        nb_audio_channels;
+    SpecifierOpt *audio_sample_rate;
+    int        nb_audio_sample_rate;
+    SpecifierOpt *frame_rates;
+    int        nb_frame_rates;
+    SpecifierOpt *frame_sizes;
+    int        nb_frame_sizes;
+    SpecifierOpt *frame_pix_fmts;
+    int        nb_frame_pix_fmts;
+
+    /* input options */
+    int64_t input_ts_offset;
+    int rate_emu;
+
+    SpecifierOpt *ts_scale;
+    int        nb_ts_scale;
+    SpecifierOpt *dump_attachment;
+    int        nb_dump_attachment;
+
+    /* output options */
+    StreamMap *stream_maps;
+    int     nb_stream_maps;
+    /* first item specifies output metadata, second is input */
+    MetadataMap (*meta_data_maps)[2];
+    int nb_meta_data_maps;
+    int metadata_global_manual;
+    int metadata_streams_manual;
+    int metadata_chapters_manual;
+    const char **attachments;
+    int       nb_attachments;
+
+    int chapters_input_file;
+
+    int64_t recording_time;
+    uint64_t limit_filesize;
+    float mux_preload;
+    float mux_max_delay;
+
+    int video_disable;
+    int audio_disable;
+    int subtitle_disable;
+    int data_disable;
+
+    /* indexed by output file stream index */
+    int   *streamid_map;
+    int nb_streamid_map;
+
+    SpecifierOpt *metadata;
+    int        nb_metadata;
+    SpecifierOpt *max_frames;
+    int        nb_max_frames;
+    SpecifierOpt *bitstream_filters;
+    int        nb_bitstream_filters;
+    SpecifierOpt *codec_tags;
+    int        nb_codec_tags;
+    SpecifierOpt *sample_fmts;
+    int        nb_sample_fmts;
+    SpecifierOpt *qscale;
+    int        nb_qscale;
+    SpecifierOpt *forced_key_frames;
+    int        nb_forced_key_frames;
+    SpecifierOpt *force_fps;
+    int        nb_force_fps;
+    SpecifierOpt *frame_aspect_ratios;
+    int        nb_frame_aspect_ratios;
+    SpecifierOpt *rc_overrides;
+    int        nb_rc_overrides;
+    SpecifierOpt *intra_matrices;
+    int        nb_intra_matrices;
+    SpecifierOpt *inter_matrices;
+    int        nb_inter_matrices;
+    SpecifierOpt *top_field_first;
+    int        nb_top_field_first;
+    SpecifierOpt *metadata_map;
+    int        nb_metadata_map;
+    SpecifierOpt *presets;
+    int        nb_presets;
+    SpecifierOpt *copy_initial_nonkeyframes;
+    int        nb_copy_initial_nonkeyframes;
+    SpecifierOpt *filters;
+    int        nb_filters;
+} OptionsContext;
+
+typedef struct InputFilter {
+    AVFilterContext    *filter;
+    struct InputStream *ist;
+    struct FilterGraph *graph;
+    uint8_t            *name;
+} InputFilter;
+
+typedef struct OutputFilter {
+    AVFilterContext     *filter;
+    struct OutputStream *ost;
+    struct FilterGraph  *graph;
+    uint8_t             *name;
+
+    /* temporary storage until stream maps are processed */
+    AVFilterInOut       *out_tmp;
+} OutputFilter;
+
+typedef struct FilterGraph {
+    int            index;
+    const char    *graph_desc;
+
+    AVFilterGraph *graph;
+
+    InputFilter   **inputs;
+    int          nb_inputs;
+    OutputFilter **outputs;
+    int         nb_outputs;
+} FilterGraph;
+
+typedef struct InputStream {
+    int file_index;
+    AVStream *st;
+    int discard;             /* true if stream data should be discarded */
+    int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
+    AVCodec *dec;
+    AVFrame *decoded_frame;
+
+    int64_t       start;     /* time when read started */
+    /* predicted dts of the next packet read for this stream or (when there are
+     * several frames in a packet) of the next frame in current packet */
+    int64_t       next_dts;
+    /* dts of the last packet read for this stream */
+    int64_t       last_dts;
+    PtsCorrectionContext pts_ctx;
+    double ts_scale;
+    int is_start;            /* is 1 at the start and after a discontinuity */
+    int showed_multi_packet_warning;
+    AVDictionary *opts;
+    AVRational framerate;               /* framerate forced with -r */
+
+    int resample_height;
+    int resample_width;
+    int resample_pix_fmt;
+
+    int      resample_sample_fmt;
+    int      resample_sample_rate;
+    int      resample_channels;
+    uint64_t resample_channel_layout;
+
+    /* a pool of free buffers for decoded data */
+    FrameBuffer *buffer_pool;
+
+    /* decoded data from this stream goes into all those filters
+     * currently video and audio only */
+    InputFilter **filters;
+    int        nb_filters;
+} InputStream;
+
+typedef struct InputFile {
+    AVFormatContext *ctx;
+    int eof_reached;      /* true if eof reached */
+    int ist_index;        /* index of first stream in ist_table */
+    int buffer_size;      /* current total buffer size */
+    int64_t ts_offset;
+    int nb_streams;       /* number of stream that avconv is aware of; may be different
+                             from ctx.nb_streams if new streams appear during av_read_frame() */
+    int rate_emu;
+
+#if HAVE_PTHREADS
+    pthread_t thread;           /* thread reading from this file */
+    int finished;               /* the thread has exited */
+    int joined;                 /* the thread has been joined */
+    pthread_mutex_t fifo_lock;  /* lock for access to fifo */
+    pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
+    AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
+#endif
+} InputFile;
+
+typedef struct OutputStream {
+    int file_index;          /* file index */
+    int index;               /* stream index in the output file */
+    int source_index;        /* InputStream index */
+    AVStream *st;            /* stream in the output file */
+    int encoding_needed;     /* true if encoding needed for this stream */
+    int frame_number;
+    /* input pts and corresponding output pts
+       for A/V sync */
+    // double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
+    struct InputStream *sync_ist; /* input stream to sync against */
+    int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
+    /* pts of the first frame encoded for this stream, used for limiting
+     * recording time */
+    int64_t first_pts;
+    AVBitStreamFilterContext *bitstream_filters;
+    AVCodec *enc;
+    int64_t max_frames;
+    AVFrame *filtered_frame;
+
+    /* video only */
+    AVRational frame_rate;
+    int force_fps;
+    int top_field_first;
+
+    float frame_aspect_ratio;
+    float last_quality;
+
+    /* forced key frames */
+    int64_t *forced_kf_pts;
+    int forced_kf_count;
+    int forced_kf_index;
+    char *forced_keyframes;
+
+    FILE *logfile;
+
+    OutputFilter *filter;
+    char *avfilter;
+
+    int64_t sws_flags;
+    AVDictionary *opts;
+    int is_past_recording_time;
+    int stream_copy;
+    const char *attachment_filename;
+    int copy_initial_nonkeyframes;
+
+    enum PixelFormat pix_fmts[2];
+} OutputStream;
+
+typedef struct OutputFile {
+    AVFormatContext *ctx;
+    AVDictionary *opts;
+    int ost_index;       /* index of the first stream in output_streams */
+    int64_t recording_time; /* desired length of the resulting file in microseconds */
+    int64_t start_time;     /* start time in microseconds */
+    uint64_t limit_filesize;
+} OutputFile;
+
+extern InputStream **input_streams;
+extern int        nb_input_streams;
+extern InputFile   **input_files;
+extern int        nb_input_files;
+
+extern OutputStream **output_streams;
+extern int         nb_output_streams;
+extern OutputFile   **output_files;
+extern int         nb_output_files;
+
+extern FilterGraph **filtergraphs;
+extern int        nb_filtergraphs;
+
+extern char *pass_logfilename_prefix;
+extern char *vstats_filename;
+
+extern float audio_drift_threshold;
+extern float dts_delta_threshold;
+
+extern int audio_volume;
+extern int audio_sync_method;
+extern int video_sync_method;
+extern int do_benchmark;
+extern int do_deinterlace;
+extern int do_hex_dump;
+extern int do_pkt_dump;
+extern int copy_ts;
+extern int copy_tb;
+extern int opt_shortest;
+extern int exit_on_error;
+extern int print_stats;
+extern int qp_hist;
+extern int same_quant;
+
+extern const AVIOInterruptCB int_cb;
+
+extern const OptionDef options[];
+
+void reset_options(OptionsContext *o);
+void show_usage(void);
+
+int opt_cpuflags(const char *opt, const char *arg);
+
+void opt_output_file(void *optctx, const char *filename);
+
+void assert_avoptions(AVDictionary *m);
+
+int guess_input_channel_layout(InputStream *ist);
+
+int configure_filtergraph(FilterGraph *fg);
+int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
+
+#endif /* AVCONV_H */