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-rw-r--r--ffmpeg.c2079
1 files changed, 2079 insertions, 0 deletions
diff --git a/ffmpeg.c b/ffmpeg.c
new file mode 100644
index 0000000000..d5bc917a42
--- /dev/null
+++ b/ffmpeg.c
@@ -0,0 +1,2079 @@
+/*
+ * FFmpeg main
+ * Copyright (c) 2000,2001 Gerard Lantau
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <string.h>
+#include <sys/poll.h>
+#include <termios.h>
+#include <ctype.h>
+
+#include "avformat.h"
+
+typedef struct {
+ const char *name;
+ int flags;
+#define HAS_ARG 0x0001
+#define OPT_BOOL 0x0002
+#define OPT_EXPERT 0x0004
+#define OPT_STRING 0x0008
+ union {
+ void (*func_arg)();
+ int *int_arg;
+ char **str_arg;
+ } u;
+ const char *help;
+ const char *argname;
+} OptionDef;
+
+/* select an input stream for an output stream */
+typedef struct AVStreamMap {
+ int file_index;
+ int stream_index;
+} AVStreamMap;
+
+extern const OptionDef options[];
+
+void show_help(void);
+
+#define MAX_FILES 20
+
+static AVFormatContext *input_files[MAX_FILES];
+static int nb_input_files = 0;
+
+static AVFormatContext *output_files[MAX_FILES];
+static int nb_output_files = 0;
+
+static AVStreamMap stream_maps[MAX_FILES];
+static int nb_stream_maps;
+
+static AVFormat *file_format;
+static int frame_width = 160;
+static int frame_height = 128;
+static int frame_rate = 25 * FRAME_RATE_BASE;
+static int video_bit_rate = 200000;
+static int video_qscale = 0;
+static int video_disable = 0;
+static int video_codec_id = CODEC_ID_NONE;
+static int same_quality = 0;
+
+static int gop_size = 12;
+static int intra_only = 0;
+static int audio_sample_rate = 44100;
+static int audio_bit_rate = 64000;
+static int audio_disable = 0;
+static int audio_channels = 1;
+static int audio_codec_id = CODEC_ID_NONE;
+
+static INT64 recording_time = 0;
+static int file_overwrite = 0;
+static char *str_title = NULL;
+static char *str_author = NULL;
+static char *str_copyright = NULL;
+static char *str_comment = NULL;
+
+typedef struct AVOutputStream {
+ int file_index; /* file index */
+ int index; /* stream index in the output file */
+ int source_index; /* AVInputStream index */
+ AVStream *st; /* stream in the output file */
+ int encoding_needed; /* true if encoding needed for this stream */
+
+ int fifo_packet_rptr; /* read index in the corresponding
+ avinputstream packet fifo */
+ /* video only */
+ AVPicture pict_tmp; /* temporary image for resizing */
+ int video_resample;
+ ImgReSampleContext *img_resample_ctx; /* for image resampling */
+
+ /* audio only */
+ int audio_resample;
+ ReSampleContext *resample; /* for audio resampling */
+ FifoBuffer fifo; /* for compression: one audio fifo per codec */
+} AVOutputStream;
+
+typedef struct AVInputStream {
+ int file_index;
+ int 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' */
+ INT64 pts; /* current pts */
+ int frame_number; /* current frame */
+ INT64 sample_index; /* current sample */
+} AVInputStream;
+
+typedef struct AVInputFile {
+ int eof_reached; /* true if eof reached */
+ int ist_index; /* index of first stream in ist_table */
+ int buffer_size; /* current total buffer size */
+ int buffer_size_max; /* buffer size at which we consider we can stop
+ buffering */
+} AVInputFile;
+
+/* init terminal so that we can grab keys */
+static struct termios oldtty;
+
+static void term_exit(void)
+{
+ tcsetattr (0, TCSANOW, &oldtty);
+}
+
+static void term_init(void)
+{
+ struct termios tty;
+
+ tcgetattr (0, &tty);
+ oldtty = tty;
+
+ tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
+ |INLCR|IGNCR|ICRNL|IXON);
+ tty.c_oflag |= OPOST;
+ tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
+ tty.c_cflag &= ~(CSIZE|PARENB);
+ tty.c_cflag |= CS8;
+ tty.c_cc[VMIN] = 1;
+ tty.c_cc[VTIME] = 0;
+
+ tcsetattr (0, TCSANOW, &tty);
+
+ atexit(term_exit);
+}
+
+/* read a key without blocking */
+static int read_key(void)
+{
+ struct timeval tv;
+ int n;
+ unsigned char ch;
+ fd_set rfds;
+
+ FD_ZERO(&rfds);
+ FD_SET(0, &rfds);
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+ n = select(1, &rfds, NULL, NULL, &tv);
+ if (n > 0) {
+ if (read(0, &ch, 1) == 1)
+ return ch;
+ }
+ return -1;
+}
+
+#define AUDIO_FIFO_SIZE 8192
+
+/* main loop for grabbing */
+int av_grab(AVFormatContext *s)
+{
+ UINT8 audio_buf[AUDIO_FIFO_SIZE/2];
+ UINT8 audio_buf1[AUDIO_FIFO_SIZE/2];
+ UINT8 audio_out[AUDIO_FIFO_SIZE/2];
+ UINT8 video_buffer[128*1024];
+ char buf[256];
+ short *samples;
+ URLContext *audio_handle = NULL, *video_handle = NULL;
+ int ret;
+ AVCodecContext *enc, *first_video_enc = NULL;
+ int frame_size, frame_bytes;
+ int use_audio, use_video;
+ int frame_rate, sample_rate, channels;
+ int width, height, frame_number, i, pix_fmt = 0;
+ AVOutputStream *ost_table[s->nb_streams], *ost;
+ UINT8 *picture_in_buf = NULL, *picture_420p = NULL;
+ int audio_fifo_size = 0, picture_size = 0;
+ INT64 time_start;
+
+ /* init output stream info */
+ for(i=0;i<s->nb_streams;i++)
+ ost_table[i] = NULL;
+
+ /* output stream init */
+ for(i=0;i<s->nb_streams;i++) {
+ ost = av_mallocz(sizeof(AVOutputStream));
+ if (!ost)
+ goto fail;
+ ost->index = i;
+ ost->st = s->streams[i];
+ ost_table[i] = ost;
+ }
+
+ use_audio = 0;
+ use_video = 0;
+ frame_rate = 0;
+ sample_rate = 0;
+ frame_size = 0;
+ channels = 1;
+ width = 0;
+ height = 0;
+ frame_number = 0;
+
+ for(i=0;i<s->nb_streams;i++) {
+ AVCodec *codec;
+
+ ost = ost_table[i];
+ enc = &ost->st->codec;
+ codec = avcodec_find_encoder(enc->codec_id);
+ if (!codec) {
+ fprintf(stderr, "Unknown codec\n");
+ return -1;
+ }
+ if (avcodec_open(enc, codec) < 0) {
+ fprintf(stderr, "Incorrect encode parameters\n");
+ return -1;
+ }
+ switch(enc->codec_type) {
+ case CODEC_TYPE_AUDIO:
+ use_audio = 1;
+ if (enc->sample_rate > sample_rate)
+ sample_rate = enc->sample_rate;
+ if (enc->frame_size > frame_size)
+ frame_size = enc->frame_size;
+ if (enc->channels > channels)
+ channels = enc->channels;
+ break;
+ case CODEC_TYPE_VIDEO:
+ if (!first_video_enc)
+ first_video_enc = enc;
+ use_video = 1;
+ if (enc->frame_rate > frame_rate)
+ frame_rate = enc->frame_rate;
+ if (enc->width > width)
+ width = enc->width;
+ if (enc->height > height)
+ height = enc->height;
+ break;
+ }
+ }
+
+ /* audio */
+ samples = NULL;
+ if (use_audio) {
+ snprintf(buf, sizeof(buf), "audio:%d,%d", sample_rate, channels);
+ ret = url_open(&audio_handle, buf, URL_RDONLY);
+ if (ret < 0) {
+ fprintf(stderr, "Could not open audio device: disabling audio capture\n");
+ use_audio = 0;
+ } else {
+ URLFormat f;
+ /* read back exact grab parameters */
+ if (url_getformat(audio_handle, &f) < 0) {
+ fprintf(stderr, "could not read back video grab parameters\n");
+ goto fail;
+ }
+ sample_rate = f.sample_rate;
+ channels = f.channels;
+ audio_fifo_size = ((AUDIO_FIFO_SIZE / 2) / audio_handle->packet_size) *
+ audio_handle->packet_size;
+ fprintf(stderr, "Audio sampling: %d Hz, %s\n",
+ sample_rate, channels == 2 ? "stereo" : "mono");
+ }
+ }
+
+ /* video */
+ if (use_video) {
+ snprintf(buf, sizeof(buf), "video:%d,%d,%f",
+ width, height, (float)frame_rate / FRAME_RATE_BASE);
+
+ ret = url_open(&video_handle, buf, URL_RDONLY);
+ if (ret < 0) {
+ fprintf(stderr,"Could not init video 4 linux capture: disabling video capture\n");
+ use_video = 0;
+ } else {
+ URLFormat f;
+ const char *pix_fmt_str;
+ /* read back exact grab parameters */
+ if (url_getformat(video_handle, &f) < 0) {
+ fprintf(stderr, "could not read back video grab parameters\n");
+ goto fail;
+ }
+ width = f.width;
+ height = f.height;
+ pix_fmt = f.pix_fmt;
+ switch(pix_fmt) {
+ case PIX_FMT_YUV420P:
+ pix_fmt_str = "420P";
+ break;
+ case PIX_FMT_YUV422:
+ pix_fmt_str = "422";
+ break;
+ case PIX_FMT_RGB24:
+ pix_fmt_str = "RGB24";
+ break;
+ case PIX_FMT_BGR24:
+ pix_fmt_str = "BGR24";
+ break;
+ default:
+ pix_fmt_str = "???";
+ break;
+ }
+ picture_size = video_handle->packet_size;
+ picture_in_buf = malloc(picture_size);
+ if (!picture_in_buf)
+ goto fail;
+ /* allocate a temporary picture if not grabbing in 420P format */
+ if (pix_fmt != PIX_FMT_YUV420P) {
+ picture_420p = malloc((width * height * 3) / 2);
+ }
+ fprintf(stderr, "Video sampling: %dx%d, %s format, %0.2f fps\n",
+ width, height, pix_fmt_str, (float)frame_rate / FRAME_RATE_BASE);
+ }
+ }
+
+ if (!use_video && !use_audio) {
+ fprintf(stderr,"Could not open grab devices : exiting\n");
+ exit(1);
+ }
+
+ /* init built in conversion functions */
+ for(i=0;i<s->nb_streams;i++) {
+ ost = ost_table[i];
+ enc = &ost->st->codec;
+ switch(enc->codec_type) {
+ case CODEC_TYPE_AUDIO:
+ ost->audio_resample = 0;
+ if ((enc->channels != channels ||
+ enc->sample_rate != sample_rate)) {
+ ost->audio_resample = 1;
+ ost->resample = audio_resample_init(enc->channels, channels,
+ enc->sample_rate, sample_rate);
+ }
+ if (fifo_init(&ost->fifo, (2 * audio_fifo_size * enc->sample_rate) /
+ sample_rate))
+ goto fail;
+ break;
+ case CODEC_TYPE_VIDEO:
+ ost->video_resample = 0;
+ if (enc->width != width ||
+ enc->height != height) {
+ UINT8 *buf;
+ ost->video_resample = 1;
+ buf = malloc((enc->width * enc->height * 3) / 2);
+ if (!buf)
+ goto fail;
+ ost->pict_tmp.data[0] = buf;
+ ost->pict_tmp.data[1] = buf + enc->width * height;
+ ost->pict_tmp.data[2] = ost->pict_tmp.data[1] + (enc->width * height) / 4;
+ ost->pict_tmp.linesize[0] = enc->width;
+ ost->pict_tmp.linesize[1] = enc->width / 2;
+ ost->pict_tmp.linesize[2] = enc->width / 2;
+ ost->img_resample_ctx = img_resample_init(
+ ost->st->codec.width, ost->st->codec.height,
+ width, height);
+ }
+ }
+ }
+
+ fprintf(stderr, "Press [q] to stop encoding\n");
+
+ s->format->write_header(s);
+ time_start = gettime();
+ term_init();
+
+ for(;;) {
+ /* if 'q' pressed, exits */
+ if (read_key() == 'q')
+ break;
+
+ /* read & compress audio frames */
+ if (use_audio) {
+ int ret, nb_samples, nb_samples_out;
+ UINT8 *buftmp;
+
+ for(;;) {
+ ret = url_read(audio_handle, audio_buf, audio_fifo_size);
+ if (ret <= 0)
+ break;
+ /* fill each codec fifo by doing the right sample
+ rate conversion. This is not optimal because we
+ do too much work, but it is easy to do */
+ nb_samples = ret / (channels * 2);
+ for(i=0;i<s->nb_streams;i++) {
+ ost = ost_table[i];
+ enc = &ost->st->codec;
+ if (enc->codec_type == CODEC_TYPE_AUDIO) {
+ /* rate & stereo convertion */
+ if (!ost->audio_resample) {
+ buftmp = audio_buf;
+ nb_samples_out = nb_samples;
+ } else {
+ buftmp = audio_buf1;
+ nb_samples_out = audio_resample(ost->resample,
+ (short *)buftmp, (short *)audio_buf,
+ nb_samples);
+ }
+ fifo_write(&ost->fifo, buftmp, nb_samples_out * enc->channels * 2,
+ &ost->fifo.wptr);
+ }
+ }
+
+ /* compress as many frame as possible with each audio codec */
+ for(i=0;i<s->nb_streams;i++) {
+ ost = ost_table[i];
+ enc = &ost->st->codec;
+ if (enc->codec_type == CODEC_TYPE_AUDIO) {
+ frame_bytes = enc->frame_size * 2 * enc->channels;
+
+ while (fifo_read(&ost->fifo, audio_buf,
+ frame_bytes, &ost->fifo.rptr) == 0) {
+ ret = avcodec_encode_audio(enc,
+ audio_out, sizeof(audio_out),
+ (short *)audio_buf);
+ s->format->write_packet(s, ost->index, audio_out, ret);
+ }
+ }
+ }
+ }
+ }
+
+ if (use_video) {
+ AVPicture *picture1;
+ AVPicture picture;
+ UINT8 *pict_buffer;
+
+ ret = url_read(video_handle, picture_in_buf, picture_size);
+ if (ret < 0)
+ break;
+ if (pix_fmt != PIX_FMT_YUV420P) {
+ pict_buffer = picture_420p;
+ img_convert_to_yuv420(pict_buffer, picture_in_buf, pix_fmt, width, height);
+ } else {
+ pict_buffer = picture_in_buf;
+ }
+ /* build a picture storage */
+ picture.data[0] = pict_buffer;
+ picture.data[1] = picture.data[0] + width * height;
+ picture.data[2] = picture.data[1] + (width * height) / 4;
+ picture.linesize[0] = width;
+ picture.linesize[1] = width / 2;
+ picture.linesize[2] = width / 2;
+
+ for(i=0;i<s->nb_streams;i++) {
+ ost = ost_table[i];
+ enc = &ost->st->codec;
+ if (enc->codec_type == CODEC_TYPE_VIDEO) {
+ int n1, n2, nb;
+
+ /* feed each codec with its requested frame rate */
+ n1 = ((INT64)frame_number * enc->frame_rate) / frame_rate;
+ n2 = (((INT64)frame_number + 1) * enc->frame_rate) / frame_rate;
+ nb = n2 - n1;
+ if (nb > 0) {
+ /* resize the picture if needed */
+ if (ost->video_resample) {
+ picture1 = &ost->pict_tmp;
+ img_resample(ost->img_resample_ctx,
+ picture1, &picture);
+ } else {
+ picture1 = &picture;
+ }
+ ret = avcodec_encode_video(enc, video_buffer,
+ sizeof(video_buffer),
+ picture1);
+ s->format->write_packet(s, ost->index, video_buffer, ret);
+ }
+ }
+ }
+ frame_number++;
+ }
+
+ /* write report */
+ {
+ char buf[1024];
+ INT64 total_size;
+ float ti, bitrate;
+ static float last_ti;
+ INT64 ti1;
+
+ total_size = url_ftell(&s->pb);
+ ti1 = gettime() - time_start;
+ /* check elapsed time */
+ if (recording_time && ti1 >= recording_time)
+ break;
+
+ ti = ti1 / 1000000.0;
+ if (ti < 0.1)
+ ti = 0.1;
+ /* dispaly twice per second */
+ if ((ti - last_ti) >= 0.5) {
+ last_ti = ti;
+ bitrate = (int)((total_size * 8) / ti / 1000.0);
+
+ buf[0] = '\0';
+ if (use_video) {
+ sprintf(buf + strlen(buf), "frame=%5d fps=%4.1f q=%2d ",
+ frame_number, (float)frame_number / ti, first_video_enc->quality);
+ }
+
+ sprintf(buf + strlen(buf), "size=%8LdkB time=%0.1f bitrate=%6.1fkbits/s",
+ total_size / 1024, ti, bitrate);
+ fprintf(stderr, "%s \r", buf);
+ fflush(stderr);
+ }
+ }
+ }
+ term_exit();
+
+ for(i=0;i<s->nb_streams;i++) {
+ ost = ost_table[i];
+ enc = &ost->st->codec;
+ avcodec_close(enc);
+ }
+ s->format->write_trailer(s);
+
+ if (audio_handle)
+ url_close(audio_handle);
+
+ if (video_handle)
+ url_close(video_handle);
+
+ /* write report */
+ {
+ float ti, bitrate;
+ INT64 total_size;
+
+ total_size = url_ftell(&s->pb);
+
+ ti = (gettime() - time_start) / 1000000.0;
+ if (ti < 0.1)
+ ti = 0.1;
+ bitrate = (int)((total_size * 8) / ti / 1000.0);
+
+ fprintf(stderr, "\033[K\nTotal time = %0.1f s, %Ld KBytes, %0.1f kbits/s\n",
+ ti, total_size / 1024, bitrate);
+ if (use_video) {
+ fprintf(stderr, "Total frames = %d\n", frame_number);
+ }
+ }
+
+ ret = 0;
+ fail1:
+ if (picture_in_buf)
+ free(picture_in_buf);
+ if (picture_420p)
+ free(picture_420p);
+ for(i=0;i<s->nb_streams;i++) {
+ ost = ost_table[i];
+ if (ost) {
+ if (ost->fifo.buffer)
+ fifo_free(&ost->fifo);
+ if (ost->pict_tmp.data[0])
+ free(ost->pict_tmp.data[0]);
+ if (ost->video_resample)
+ img_resample_close(ost->img_resample_ctx);
+ if (ost->audio_resample)
+ audio_resample_close(ost->resample);
+ free(ost);
+ }
+ }
+ return ret;
+ fail:
+ ret = -ENOMEM;
+ goto fail1;
+}
+
+int read_ffserver_streams(AVFormatContext *s, const char *filename)
+{
+ int i;
+ AVFormatContext *ic;
+
+ ic = av_open_input_file(filename, FFM_PACKET_SIZE);
+ if (!ic)
+ return -EIO;
+ /* copy stream format */
+ s->nb_streams = ic->nb_streams;
+ for(i=0;i<ic->nb_streams;i++) {
+ AVStream *st;
+ st = av_mallocz(sizeof(AVFormatContext));
+ memcpy(st, ic->streams[i], sizeof(AVStream));
+ s->streams[i] = st;
+ }
+
+ av_close_input_file(ic);
+ return 0;
+}
+
+#define MAX_AUDIO_PACKET_SIZE 16384
+
+static void do_audio_out(AVFormatContext *s,
+ AVOutputStream *ost,
+ AVInputStream *ist,
+ unsigned char *buf, int size)
+{
+ UINT8 *buftmp;
+ UINT8 audio_buf[2*MAX_AUDIO_PACKET_SIZE]; /* XXX: allocate it */
+ UINT8 audio_out[MAX_AUDIO_PACKET_SIZE]; /* XXX: allocate it */
+ int size_out, frame_bytes, ret;
+ AVCodecContext *enc;
+
+ enc = &ost->st->codec;
+
+ if (ost->audio_resample) {
+ buftmp = audio_buf;
+ size_out = audio_resample(ost->resample,
+ (short *)buftmp, (short *)buf,
+ size / (ist->st->codec.channels * 2));
+ size_out = size_out * enc->channels * 2;
+ } else {
+ buftmp = buf;
+ size_out = size;
+ }
+
+ /* now encode as many frames as possible */
+ if (enc->codec_id != CODEC_ID_PCM) {
+ /* output resampled raw samples */
+ fifo_write(&ost->fifo, buftmp, size_out,
+ &ost->fifo.wptr);
+
+ frame_bytes = enc->frame_size * 2 * enc->channels;
+
+ while (fifo_read(&ost->fifo, audio_buf, frame_bytes,
+ &ost->fifo.rptr) == 0) {
+ ret = avcodec_encode_audio(enc,
+ audio_out, sizeof(audio_out), (short *)audio_buf);
+ s->format->write_packet(s, ost->index, audio_out, ret);
+ }
+ } else {
+ /* XXX: handle endianness */
+ s->format->write_packet(s, ost->index, buftmp, size_out);
+ }
+}
+
+/* write a picture to a raw mux */
+static void write_picture(AVFormatContext *s, int index, AVPicture *picture, int w, int h)
+{
+ UINT8 *buf, *src, *dest;
+ int size, j, i;
+ /* XXX: not efficient, should add test if we can take
+ directly the AVPicture */
+ size = (w * h) * 3 / 2;
+ buf = malloc(size);
+ dest = buf;
+ for(i=0;i<3;i++) {
+ if (i == 1) {
+ w >>= 1;
+ h >>= 1;
+ }
+ src = picture->data[i];
+ for(j=0;j<h;j++) {
+ memcpy(dest, src, w);
+ dest += w;
+ src += picture->linesize[i];
+ }
+ }
+ s->format->write_packet(s, index, buf, size);
+ free(buf);
+}
+
+
+static void do_video_out(AVFormatContext *s,
+ AVOutputStream *ost,
+ AVInputStream *ist,
+ AVPicture *pict)
+{
+ int n1, n2, nb, i, ret, frame_number;
+ AVPicture *picture;
+ UINT8 video_buffer[128*1024];
+ AVCodecContext *enc;
+
+ enc = &ost->st->codec;
+
+ frame_number = ist->frame_number;
+ /* first drop frame if needed */
+ n1 = ((INT64)frame_number * enc->frame_rate) / ist->st->codec.frame_rate;
+ n2 = (((INT64)frame_number + 1) * enc->frame_rate) / ist->st->codec.frame_rate;
+ nb = n2 - n1;
+ if (nb <= 0)
+ return;
+
+ if (ost->video_resample) {
+ picture = &ost->pict_tmp;
+ img_resample(ost->img_resample_ctx, picture, pict);
+ } else {
+ picture = pict;
+ }
+
+ /* duplicates frame if needed */
+ /* XXX: pb because no interleaving */
+ for(i=0;i<nb;i++) {
+ if (enc->codec_id != CODEC_ID_RAWVIDEO) {
+ /* handles sameq here. This is not correct because it may
+ not be a global option */
+ if (same_quality) {
+ ost->st->codec.quality = ist->st->codec.quality;
+ }
+ ret = avcodec_encode_video(&ost->st->codec,
+ video_buffer, sizeof(video_buffer),
+ picture);
+ s->format->write_packet(s, ost->index, video_buffer, ret);
+ } else {
+ write_picture(s, ost->index, picture, enc->width, enc->height);
+ }
+ }
+}
+
+//#define HEX_DUMP
+
+#ifdef HEX_DUMP
+static void hex_dump(UINT8 *buf, int size)
+{
+ int len, i, j, c;
+
+ for(i=0;i<size;i+=16) {
+ len = size - i;
+ if (len > 16)
+ len = 16;
+ printf("%08x ", i);
+ for(j=0;j<16;j++) {
+ if (j < len)
+ printf(" %02x", buf[i+j]);
+ else
+ printf(" ");
+ }
+ printf(" ");
+ for(j=0;j<len;j++) {
+ c = buf[i+j];
+ if (c < ' ' || c > '~')
+ c = '.';
+ printf("%c", c);
+ }
+ printf("\n");
+ }
+}
+#endif
+
+/*
+ * The following code is the main loop of the file converter
+ */
+static int av_encode(AVFormatContext **output_files,
+ int nb_output_files,
+ AVFormatContext **input_files,
+ int nb_input_files,
+ AVStreamMap *stream_maps, int nb_stream_maps)
+{
+ int ret, i, j, k, n, nb_istreams, nb_ostreams = 0;
+ AVFormatContext *is, *os;
+ AVCodecContext *codec, *icodec;
+ AVOutputStream *ost, **ost_table = NULL;
+ AVInputStream *ist, **ist_table = NULL;
+ INT64 min_pts, start_time;
+ AVInputFile file_table[nb_input_files];
+
+ memset(file_table, 0, sizeof(file_table));
+
+ /* input stream init */
+ j = 0;
+ for(i=0;i<nb_input_files;i++) {
+ is = input_files[i];
+ file_table[i].ist_index = j;
+ j += is->nb_streams;
+ }
+ nb_istreams = j;
+
+ ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
+ if (!ist_table)
+ return -ENOMEM;
+
+ for(i=0;i<nb_istreams;i++) {
+ ist = av_mallocz(sizeof(AVInputStream));
+ if (!ist)
+ goto fail;
+ ist_table[i] = ist;
+ }
+ j = 0;
+ for(i=0;i<nb_input_files;i++) {
+ is = input_files[i];
+ for(k=0;k<is->nb_streams;k++) {
+ ist = ist_table[j++];
+ ist->st = is->streams[k];
+ ist->file_index = i;
+ ist->index = k;
+ ist->discard = 1; /* the stream is discarded by default
+ (changed later) */
+ }
+ }
+
+ /* output stream init */
+ nb_ostreams = 0;
+ for(i=0;i<nb_output_files;i++) {
+ os = output_files[i];
+ nb_ostreams += os->nb_streams;
+ }
+ if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
+ fprintf(stderr, "Number of stream maps must match number of output streams\n");
+ exit(1);
+ }
+
+ ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
+ if (!ost_table)
+ goto fail;
+ for(i=0;i<nb_ostreams;i++) {
+ ost = av_mallocz(sizeof(AVOutputStream));
+ if (!ost)
+ goto fail;
+ ost_table[i] = ost;
+ }
+
+ n = 0;
+ for(k=0;k<nb_output_files;k++) {
+ os = output_files[k];
+ for(i=0;i<os->nb_streams;i++) {
+ int found;
+ ost = ost_table[n++];
+ ost->file_index = k;
+ ost->index = i;
+ ost->st = os->streams[i];
+ if (nb_stream_maps > 0) {
+ ost->source_index = file_table[stream_maps[n-1].file_index].ist_index +
+ stream_maps[n-1].stream_index;
+ } else {
+ /* get corresponding input stream index : we select the first one with the right type */
+ found = 0;
+ for(j=0;j<nb_istreams;j++) {
+ ist = ist_table[j];
+ if (ist->discard &&
+ ist->st->codec.codec_type == ost->st->codec.codec_type) {
+ ost->source_index = j;
+ found = 1;
+ }
+ }
+
+ if (!found) {
+ /* try again and reuse existing stream */
+ for(j=0;j<nb_istreams;j++) {
+ ist = ist_table[j];
+ if (ist->st->codec.codec_type == ost->st->codec.codec_type) {
+ ost->source_index = j;
+ found = 1;
+ }
+ }
+ if (!found) {
+ fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
+ ost->file_index, ost->index);
+ exit(1);
+ }
+ }
+ }
+ ist = ist_table[ost->source_index];
+ ist->discard = 0;
+ }
+ }
+
+ /* dump the stream mapping */
+ fprintf(stderr, "Stream mapping:\n");
+ for(i=0;i<nb_ostreams;i++) {
+ ost = ost_table[i];
+ fprintf(stderr, " Stream #%d.%d -> #%d.%d\n",
+ ist_table[ost->source_index]->file_index,
+ ist_table[ost->source_index]->index,
+ ost->file_index,
+ ost->index);
+ }
+
+ /* for each output stream, we compute the right encoding parameters */
+ for(i=0;i<nb_ostreams;i++) {
+ ost = ost_table[i];
+ ist = ist_table[ost->source_index];
+
+ codec = &ost->st->codec;
+ icodec = &ist->st->codec;
+
+ switch(codec->codec_type) {
+ case CODEC_TYPE_AUDIO:
+ /* check if same codec with same parameters. If so, no
+ reencoding is needed */
+ if (codec->codec_id == icodec->codec_id &&
+ codec->bit_rate == icodec->bit_rate &&
+ codec->sample_rate == icodec->sample_rate &&
+ codec->channels == icodec->channels) {
+ /* no reencoding */
+ } else {
+ if (fifo_init(&ost->fifo, 2 * MAX_AUDIO_PACKET_SIZE))
+ goto fail;
+
+ if (codec->channels == icodec->channels &&
+ codec->sample_rate == icodec->sample_rate) {
+ ost->audio_resample = 0;
+ } else {
+ ost->audio_resample = 1;
+ ost->resample = audio_resample_init(codec->channels, icodec->channels,
+ codec->sample_rate,
+ icodec->sample_rate);
+ }
+ ist->decoding_needed = 1;
+ ost->encoding_needed = 1;
+ }
+ break;
+ case CODEC_TYPE_VIDEO:
+ /* check if same codec with same parameters. If so, no
+ reencoding is needed */
+ if (codec->codec_id == icodec->codec_id &&
+ codec->bit_rate == icodec->bit_rate &&
+ codec->frame_rate == icodec->frame_rate &&
+ codec->width == icodec->width &&
+ codec->height == icodec->height) {
+ /* no reencoding */
+ } else {
+ if (codec->width == icodec->width &&
+ codec->height == icodec->height) {
+ ost->video_resample = 0;
+ } else {
+ UINT8 *buf;
+ ost->video_resample = 1;
+ buf = malloc((codec->width * codec->height * 3) / 2);
+ if (!buf)
+ goto fail;
+ ost->pict_tmp.data[0] = buf;
+ ost->pict_tmp.data[1] = ost->pict_tmp.data[0] + (codec->width * codec->height);
+ ost->pict_tmp.data[2] = ost->pict_tmp.data[1] + (codec->width * codec->height) / 4;
+ ost->pict_tmp.linesize[0] = codec->width;
+ ost->pict_tmp.linesize[1] = codec->width / 2;
+ ost->pict_tmp.linesize[2] = codec->width / 2;
+
+ ost->img_resample_ctx = img_resample_init(
+ ost->st->codec.width, ost->st->codec.height,
+ ist->st->codec.width, ist->st->codec.height);
+ }
+ ost->encoding_needed = 1;
+ ist->decoding_needed = 1;
+ }
+ break;
+ }
+ }
+
+ /* open each encoder */
+ for(i=0;i<nb_ostreams;i++) {
+ ost = ost_table[i];
+ if (ost->encoding_needed) {
+ AVCodec *codec;
+ codec = avcodec_find_encoder(ost->st->codec.codec_id);
+ if (!codec) {
+ fprintf(stderr, "Unsupported codec for output stream #%d.%d\n",
+ ost->file_index, ost->index);
+ exit(1);
+ }
+ if (avcodec_open(&ost->st->codec, codec) < 0) {
+ fprintf(stderr, "Error while opening codec for stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height\n",
+ ost->file_index, ost->index);
+ exit(1);
+ }
+ }
+ }
+
+ /* open each decoder */
+ for(i=0;i<nb_istreams;i++) {
+ ist = ist_table[i];
+ if (ist->decoding_needed) {
+ AVCodec *codec;
+ codec = avcodec_find_decoder(ist->st->codec.codec_id);
+ if (!codec) {
+ fprintf(stderr, "Unsupported codec for input stream #%d.%d\n",
+ ist->file_index, ist->index);
+ exit(1);
+ }
+ if (avcodec_open(&ist->st->codec, codec) < 0) {
+ fprintf(stderr, "Error while opening codec for input stream #%d.%d\n",
+ ist->file_index, ist->index);
+ exit(1);
+ }
+ }
+ }
+
+ /* init pts */
+ for(i=0;i<nb_istreams;i++) {
+ ist = ist_table[i];
+ ist->pts = 0;
+ ist->frame_number = 0;
+ }
+
+ /* compute buffer size max (should use a complete heuristic) */
+ for(i=0;i<nb_input_files;i++) {
+ file_table[i].buffer_size_max = 2048;
+ }
+
+ /* open files and write file headers */
+ for(i=0;i<nb_output_files;i++) {
+ os = output_files[i];
+ os->format->write_header(os);
+ }
+
+ start_time = gettime();
+ min_pts = 0;
+ for(;;) {
+ int file_index, ist_index;
+ AVPacket pkt;
+ UINT8 *ptr;
+ int len;
+ UINT8 *data_buf;
+ int data_size, got_picture;
+ AVPicture picture;
+ short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2];
+
+ /* select the input file with the smallest pts */
+ redo:
+ file_index = -1;
+ min_pts = (1ULL << 63) - 1;
+ for(i=0;i<nb_istreams;i++) {
+ ist = ist_table[i];
+ if (!ist->discard && !file_table[ist->file_index].eof_reached && ist->pts < min_pts) {
+ min_pts = ist->pts;
+ file_index = ist->file_index;
+ }
+ }
+ /* if none, if is finished */
+ if (file_index < 0)
+ break;
+ /* finish if recording time exhausted */
+ if (recording_time > 0 && min_pts >= recording_time)
+ break;
+ /* read a packet from it and output it in the fifo */
+
+ is = input_files[file_index];
+ if (av_read_packet(is, &pkt) < 0) {
+ file_table[file_index].eof_reached = 1;
+ continue;
+ }
+ ist_index = file_table[file_index].ist_index + pkt.stream_index;
+ ist = ist_table[ist_index];
+ if (ist->discard) {
+ continue;
+ }
+
+#ifdef HEX_DUMP
+ printf("stream #%d, size=%d:\n", pkt.stream_index, pkt.size);
+ hex_dump(pkt.data, pkt.size);
+#endif
+
+ // printf("read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
+
+ len = pkt.size;
+ ptr = pkt.data;
+ while (len > 0) {
+
+ /* decode the packet if needed */
+ data_buf = NULL; /* fail safe */
+ data_size = 0;
+ if (ist->decoding_needed) {
+ switch(ist->st->codec.codec_type) {
+ case CODEC_TYPE_AUDIO:
+ if (ist->st->codec.codec_id == CODEC_ID_PCM) {
+ /* no need to call a codec */
+ data_buf = ptr;
+ data_size = len;
+ ret = len;
+ } else {
+ ret = avcodec_decode_audio(&ist->st->codec, samples, &data_size,
+ ptr, len);
+ if (ret < 0)
+ goto fail_decode;
+ if (data_size == 0) {
+ /* no audio frame */
+ ptr += ret;
+ len -= ret;
+ continue;
+ }
+ data_buf = (UINT8 *)samples;
+ }
+ break;
+ case CODEC_TYPE_VIDEO:
+ if (ist->st->codec.codec_id == CODEC_ID_RAWVIDEO) {
+ int size;
+ size = (ist->st->codec.width * ist->st->codec.height);
+
+ picture.data[0] = ptr;
+ picture.data[1] = picture.data[0] + size;
+ picture.data[2] = picture.data[1] + size / 4;
+ picture.linesize[0] = ist->st->codec.width;
+ picture.linesize[1] = ist->st->codec.width / 2;
+ picture.linesize[2] = ist->st->codec.width / 2;
+ ret = len;
+ } else {
+ data_size = (ist->st->codec.width * ist->st->codec.height * 3) / 2;
+ ret = avcodec_decode_video(&ist->st->codec,
+ &picture, &got_picture, ptr, len);
+ if (ret < 0) {
+ fail_decode:
+ fprintf(stderr, "Error while decoding stream #%d.%d\n",
+ ist->file_index, ist->index);
+ av_free_packet(&pkt);
+ goto redo;
+ }
+ if (!got_picture) {
+ /* no picture yet */
+ ptr += ret;
+ len -= ret;
+ continue;
+ }
+ }
+ break;
+ default:
+ goto fail_decode;
+ }
+ } else {
+ data_buf = ptr;
+ data_size = len;
+ ret = len;
+ }
+ /* update pts */
+ switch(ist->st->codec.codec_type) {
+ case CODEC_TYPE_AUDIO:
+ ist->pts = (INT64)1000000 * ist->sample_index / ist->st->codec.sample_rate;
+ ist->sample_index += data_size / (2 * ist->st->codec.channels);
+ break;
+ case CODEC_TYPE_VIDEO:
+ ist->frame_number++;
+ ist->pts = ((INT64)ist->frame_number * 1000000 * FRAME_RATE_BASE) /
+ ist->st->codec.frame_rate;
+ break;
+ }
+ ptr += ret;
+ len -= ret;
+
+ /* transcode raw format, encode packets and output them */
+
+ for(i=0;i<nb_ostreams;i++) {
+ ost = ost_table[i];
+ if (ost->source_index == ist_index) {
+ os = output_files[ost->file_index];
+
+ if (ost->encoding_needed) {
+ switch(ost->st->codec.codec_type) {
+ case CODEC_TYPE_AUDIO:
+ do_audio_out(os, ost, ist, data_buf, data_size);
+ break;
+ case CODEC_TYPE_VIDEO:
+ do_video_out(os, ost, ist, &picture);
+ break;
+ }
+ } else {
+ /* no reencoding needed : output the packet directly */
+ os->format->write_packet(os, ost->index, data_buf, data_size);
+ }
+ }
+ }
+ }
+ av_free_packet(&pkt);
+
+ /* dump report by using the first video and audio streams */
+ {
+ char buf[1024];
+ AVFormatContext *oc;
+ INT64 total_size, ti;
+ AVCodecContext *enc;
+ int frame_number, vid;
+ double bitrate, ti1;
+ static INT64 last_time;
+
+ if ((min_pts - last_time) >= 500000) {
+ last_time = min_pts;
+
+ oc = output_files[0];
+
+ total_size = url_ftell(&oc->pb);
+
+ buf[0] = '\0';
+ ti = (1ULL << 63) - 1;
+ vid = 0;
+ for(i=0;i<nb_ostreams;i++) {
+ ost = ost_table[i];
+ enc = &ost->st->codec;
+ ist = ist_table[ost->source_index];
+ if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {
+ frame_number = ist->frame_number;
+ sprintf(buf + strlen(buf), "frame=%5d q=%2d ",
+ frame_number, enc->quality);
+ vid = 1;
+ }
+ /* compute min pts value */
+ if (!ist->discard && ist->pts < ti) {
+ ti = ist->pts;
+ }
+ }
+
+ ti1 = ti / 1000000.0;
+ if (ti1 < 0.1)
+ ti1 = 0.1;
+ bitrate = (double)(total_size * 8) / ti1 / 1000.0;
+
+ sprintf(buf + strlen(buf), "size=%8LdkB time=%0.1f bitrate=%6.1fkbits/s",
+ total_size / 1024, ti1, bitrate);
+
+ fprintf(stderr, "%s \r", buf);
+ fflush(stderr);
+ }
+ }
+ }
+
+ /* dump report by using the first video and audio streams */
+ {
+ char buf[1024];
+ AVFormatContext *oc;
+ INT64 total_size, ti;
+ AVCodecContext *enc;
+ int frame_number, vid;
+ double bitrate, ti1;
+
+ oc = output_files[0];
+
+ total_size = url_ftell(&oc->pb);
+
+ buf[0] = '\0';
+ ti = (1ULL << 63) - 1;
+ vid = 0;
+ for(i=0;i<nb_ostreams;i++) {
+ ost = ost_table[i];
+ enc = &ost->st->codec;
+ ist = ist_table[ost->source_index];
+ if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {
+ frame_number = ist->frame_number;
+ sprintf(buf + strlen(buf), "frame=%5d q=%2d ",
+ frame_number, enc->quality);
+ vid = 1;
+ }
+ /* compute min pts value */
+ if (!ist->discard && ist->pts < ti) {
+ ti = ist->pts;
+ }
+ }
+
+ ti1 = ti / 1000000.0;
+ if (ti1 < 0.1)
+ ti1 = 0.1;
+ bitrate = (double)(total_size * 8) / ti1 / 1000.0;
+
+ sprintf(buf + strlen(buf), "size=%8LdkB time=%0.1f bitrate=%6.1fkbits/s",
+ total_size / 1024, ti1, bitrate);
+
+ fprintf(stderr, "%s \n", buf);
+ }
+ /* close each encoder */
+ for(i=0;i<nb_ostreams;i++) {
+ ost = ost_table[i];
+ if (ost->encoding_needed) {
+ avcodec_close(&ost->st->codec);
+ }
+ }
+
+ /* close each decoder */
+ for(i=0;i<nb_istreams;i++) {
+ ist = ist_table[i];
+ if (ist->decoding_needed) {
+ avcodec_close(&ist->st->codec);
+ }
+ }
+
+
+ /* write the trailer if needed and close file */
+ for(i=0;i<nb_output_files;i++) {
+ os = output_files[i];
+ os->format->write_trailer(os);
+ }
+ /* finished ! */
+
+ ret = 0;
+ fail1:
+ if (ist_table) {
+ for(i=0;i<nb_istreams;i++) {
+ ist = ist_table[i];
+ if (ist) {
+ free(ist);
+ }
+ }
+ free(ist_table);
+ }
+ if (ost_table) {
+ for(i=0;i<nb_ostreams;i++) {
+ ost = ost_table[i];
+ if (ost) {
+ if (ost->pict_tmp.data[0])
+ free(ost->pict_tmp.data[0]);
+ if (ost->video_resample)
+ img_resample_close(ost->img_resample_ctx);
+ if (ost->audio_resample)
+ audio_resample_close(ost->resample);
+ free(ost);
+ }
+ }
+ free(ost_table);
+ }
+ return ret;
+ fail:
+ ret = -ENOMEM;
+ goto fail1;
+}
+
+#if 0
+int file_read(const char *filename)
+{
+ URLContext *h;
+ unsigned char buffer[1024];
+ int len, i;
+
+ if (url_open(&h, filename, O_RDONLY) < 0) {
+ printf("could not open '%s'\n", filename);
+ return -1;
+ }
+ for(;;) {
+ len = url_read(h, buffer, sizeof(buffer));
+ if (len <= 0)
+ break;
+ for(i=0;i<len;i++) putchar(buffer[i]);
+ }
+ url_close(h);
+ return 0;
+}
+#endif
+
+void show_licence(void)
+{
+ printf(
+ "ffmpeg version " FFMPEG_VERSION "\n"
+ "Copyright (c) 2000,2001 Gerard Lantau\n"
+ "This program is free software; you can redistribute it and/or modify\n"
+ "it under the terms of the GNU General Public License as published by\n"
+ "the Free Software Foundation; either version 2 of the License, or\n"
+ "(at your option) any later version.\n"
+ "\n"
+ "This program is distributed in the hope that it will be useful,\n"
+ "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+ "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
+ "GNU General Public License for more details.\n"
+ "\n"
+ "You should have received a copy of the GNU General Public License\n"
+ "along with this program; if not, write to the Free Software\n"
+ "Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n"
+ );
+ exit(1);
+}
+
+void opt_format(const char *arg)
+{
+ AVFormat *f;
+ f = first_format;
+ while (f != NULL && strcmp(f->name, arg) != 0) f = f->next;
+ if (f == NULL) {
+ fprintf(stderr, "Invalid format: %s\n", arg);
+ exit(1);
+ }
+ file_format = f;
+}
+
+void opt_video_bitrate(const char *arg)
+{
+ video_bit_rate = atoi(arg) * 1000;
+}
+
+void opt_frame_rate(const char *arg)
+{
+ frame_rate = (int)(strtod(arg, 0) * FRAME_RATE_BASE);
+}
+
+void opt_frame_size(const char *arg)
+{
+ parse_image_size(&frame_width, &frame_height, arg);
+ if (frame_width <= 0 || frame_height <= 0) {
+ fprintf(stderr, "Incorrect frame size\n");
+ exit(1);
+ }
+ if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
+ fprintf(stderr, "Frame size must be a multiple of 2\n");
+ exit(1);
+ }
+}
+
+void opt_gop_size(const char *arg)
+{
+ gop_size = atoi(arg);
+}
+
+void opt_qscale(const char *arg)
+{
+ video_qscale = atoi(arg);
+ if (video_qscale < 0 ||
+ video_qscale > 31) {
+ fprintf(stderr, "qscale must be >= 1 and <= 31\n");
+ exit(1);
+ }
+}
+
+
+void opt_audio_bitrate(const char *arg)
+{
+ audio_bit_rate = atoi(arg) * 1000;
+}
+
+void opt_audio_rate(const char *arg)
+{
+ audio_sample_rate = atoi(arg);
+}
+
+void opt_audio_channels(const char *arg)
+{
+ audio_channels = atoi(arg);
+}
+
+void opt_video_device(const char *arg)
+{
+ v4l_device = strdup(arg);
+}
+
+void opt_audio_device(const char *arg)
+{
+ audio_device = strdup(arg);
+}
+
+void opt_audio_codec(const char *arg)
+{
+ AVCodec *p;
+
+ p = first_avcodec;
+ while (p) {
+ if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_AUDIO)
+ break;
+ p = p->next;
+ }
+ if (p == NULL) {
+ fprintf(stderr, "Unknown audio codec '%s'\n", arg);
+ exit(1);
+ } else {
+ audio_codec_id = p->id;
+ }
+}
+
+const char *motion_str[] = {
+ "zero",
+ "full",
+ "log",
+ "phods",
+ NULL,
+};
+
+void opt_motion_estimation(const char *arg)
+{
+ const char **p;
+ p = motion_str;
+ for(;;) {
+ if (!*p) {
+ fprintf(stderr, "Unknown motion estimation method '%s'\n", arg);
+ exit(1);
+ }
+ if (!strcmp(*p, arg))
+ break;
+ p++;
+ }
+ motion_estimation_method = p - motion_str;
+}
+
+void opt_video_codec(const char *arg)
+{
+ AVCodec *p;
+
+ p = first_avcodec;
+ while (p) {
+ if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_VIDEO)
+ break;
+ p = p->next;
+ }
+ if (p == NULL) {
+ fprintf(stderr, "Unknown video codec '%s'\n", arg);
+ exit(1);
+ } else {
+ video_codec_id = p->id;
+ }
+}
+
+void opt_map(const char *arg)
+{
+ AVStreamMap *m;
+ const char *p;
+
+ p = arg;
+ m = &stream_maps[nb_stream_maps++];
+
+ m->file_index = strtol(arg, (char **)&p, 0);
+ if (*p)
+ p++;
+ m->stream_index = strtol(arg, (char **)&p, 0);
+}
+
+void opt_recording_time(const char *arg)
+{
+ recording_time = parse_date(arg, 1);
+}
+
+/* return the number of packet read to find the codec parameters */
+int find_codec_parameters(AVFormatContext *ic)
+{
+ int val, i, count, ret, got_picture, size;
+ AVCodec *codec;
+ AVCodecContext *enc;
+ AVStream *st;
+ AVPacket *pkt;
+ AVPicture picture;
+ AVPacketList *pktl, **ppktl;
+ short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2];
+ UINT8 *ptr;
+
+ count = 0;
+ ppktl = &ic->packet_buffer;
+ for(;;) {
+ for(i=0;i<ic->nb_streams;i++) {
+ enc = &ic->streams[i]->codec;
+
+ switch(enc->codec_type) {
+ case CODEC_TYPE_AUDIO:
+ val = enc->sample_rate;
+ break;
+ case CODEC_TYPE_VIDEO:
+ val = enc->width;
+ break;
+ default:
+ val = 1;
+ break;
+ }
+ /* if no parameters supplied, then we should read it from
+ the stream */
+ if (val == 0)
+ break;
+ }
+ if (i == ic->nb_streams) {
+ ret = count;
+ break;
+ }
+
+ if (count == 0) {
+ /* open each codec */
+ for(i=0;i<ic->nb_streams;i++) {
+ st = ic->streams[i];
+ codec = avcodec_find_decoder(st->codec.codec_id);
+ if (codec == NULL) {
+ ret = -1;
+ goto the_end;
+ }
+ avcodec_open(&st->codec, codec);
+ }
+ }
+ pktl = av_mallocz(sizeof(AVPacketList));
+ if (!pktl) {
+ ret = -1;
+ break;
+ }
+
+ /* add the packet in the buffered packet list */
+ *ppktl = pktl;
+ ppktl = &pktl->next;
+
+ pkt = &pktl->pkt;
+ if (ic->format->read_packet(ic, pkt) < 0) {
+ ret = -1;
+ break;
+ }
+ st = ic->streams[pkt->stream_index];
+
+ /* decode the data and update codec parameters */
+ ptr = pkt->data;
+ size = pkt->size;
+ while (size > 0) {
+ switch(st->codec.codec_type) {
+ case CODEC_TYPE_VIDEO:
+ ret = avcodec_decode_video(&st->codec, &picture, &got_picture, ptr, size);
+ break;
+ case CODEC_TYPE_AUDIO:
+ ret = avcodec_decode_audio(&st->codec, samples, &got_picture, ptr, size);
+ break;
+ default:
+ ret = -1;
+ break;
+ }
+ if (ret < 0) {
+ ret = -1;
+ goto the_end;
+ }
+ if (got_picture)
+ break;
+ ptr += ret;
+ size -= ret;
+ }
+
+ count++;
+ }
+ the_end:
+ if (count > 0) {
+ /* close each codec */
+ for(i=0;i<ic->nb_streams;i++) {
+ st = ic->streams[i];
+ avcodec_close(&st->codec);
+ }
+ }
+ return ret;
+}
+
+
+void opt_input_file(const char *filename)
+{
+ AVFormatContext *ic;
+ AVFormatParameters params, *ap = &params;
+ URLFormat url_format;
+ AVFormat *fmt;
+ int err, i, ret;
+
+ ic = av_mallocz(sizeof(AVFormatContext));
+ strcpy(ic->filename, filename);
+ /* first format guess to know if we must open file */
+ fmt = file_format;
+ if (!fmt)
+ fmt = guess_format(NULL, filename, NULL);
+
+ if (fmt == NULL || !(fmt->flags & AVFMT_NOFILE)) {
+ /* open file */
+ if (url_fopen(&ic->pb, filename, URL_RDONLY) < 0) {
+ fprintf(stderr, "Could not open '%s'\n", filename);
+ exit(1);
+ }
+
+ /* find format and set default parameters */
+ fmt = file_format;
+ err = url_getformat(url_fileno(&ic->pb), &url_format);
+ if (err >= 0) {
+ if (!fmt)
+ fmt = guess_format(url_format.format_name, NULL, NULL);
+ ap->sample_rate = url_format.sample_rate;
+ ap->frame_rate = url_format.frame_rate;
+ ap->channels = url_format.channels;
+ ap->width = url_format.width;
+ ap->height = url_format.height;
+ ap->pix_fmt = url_format.pix_fmt;
+ } else {
+ if (!fmt)
+ fmt = guess_format(NULL, filename, NULL);
+ memset(ap, 0, sizeof(*ap));
+ }
+ } else {
+ memset(ap, 0, sizeof(*ap));
+ }
+
+ if (!fmt || !fmt->read_header) {
+ fprintf(stderr, "%s: Unknown file format\n", filename);
+ exit(1);
+ }
+ ic->format = fmt;
+
+ /* get default parameters from command line */
+ if (!ap->sample_rate)
+ ap->sample_rate = audio_sample_rate;
+ if (!ap->channels)
+ ap->channels = audio_channels;
+
+ if (!ap->frame_rate)
+ ap->frame_rate = frame_rate;
+ if (!ap->width)
+ ap->width = frame_width;
+ if (!ap->height)
+ ap->height = frame_height;
+
+ err = ic->format->read_header(ic, ap);
+ if (err < 0) {
+ fprintf(stderr, "%s: Error while parsing header\n", filename);
+ exit(1);
+ }
+
+ /* If not enough info for the codecs, we decode the first frames
+ to get it. (used in mpeg case for example) */
+ ret = find_codec_parameters(ic);
+ if (ret < 0) {
+ fprintf(stderr, "%s: could not find codec parameters\n", filename);
+ exit(1);
+ }
+
+ /* update the current parameters so that they match the one of the input stream */
+ for(i=0;i<ic->nb_streams;i++) {
+ AVCodecContext *enc = &ic->streams[i]->codec;
+ switch(enc->codec_type) {
+ case CODEC_TYPE_AUDIO:
+ audio_channels = enc->channels;
+ audio_sample_rate = enc->sample_rate;
+ break;
+ case CODEC_TYPE_VIDEO:
+ frame_height = enc->height;
+ frame_width = enc->width;
+ frame_rate = enc->frame_rate;
+ break;
+ }
+ }
+
+ input_files[nb_input_files] = ic;
+ /* dump the file content */
+ dump_format(ic, nb_input_files, filename, 0);
+ nb_input_files++;
+ file_format = NULL;
+}
+
+void opt_output_file(const char *filename)
+{
+ AVStream *st;
+ AVFormatContext *oc;
+ int use_video, use_audio, nb_streams;
+ int codec_id;
+
+ if (!strcmp(filename, "-"))
+ filename = "pipe:";
+
+ oc = av_mallocz(sizeof(AVFormatContext));
+
+ if (!file_format) {
+ file_format = guess_format(NULL, filename, NULL);
+ if (!file_format)
+ file_format = &mpeg_mux_format;
+ }
+
+ oc->format = file_format;
+
+ if (!strcmp(file_format->name, "ffm") &&
+ strstart(filename, "http:", NULL)) {
+ /* special case for files sent to ffserver: we get the stream
+ parameters from ffserver */
+ if (read_ffserver_streams(oc, filename) < 0) {
+ fprintf(stderr, "Could not read stream parameters from '%s'\n", filename);
+ exit(1);
+ }
+ } else {
+ use_video = file_format->video_codec != CODEC_ID_NONE;
+ use_audio = file_format->audio_codec != CODEC_ID_NONE;
+
+ if (audio_disable) {
+ use_audio = 0;
+ }
+ if (video_disable) {
+ use_video = 0;
+ }
+
+ nb_streams = 0;
+ if (use_video) {
+ AVCodecContext *video_enc;
+
+ st = av_mallocz(sizeof(AVStream));
+ if (!st) {
+ fprintf(stderr, "Could not alloc stream\n");
+ exit(1);
+ }
+ video_enc = &st->codec;
+
+ codec_id = file_format->video_codec;
+ if (video_codec_id != CODEC_ID_NONE)
+ codec_id = video_codec_id;
+
+ video_enc->codec_id = codec_id;
+ video_enc->codec_type = CODEC_TYPE_VIDEO;
+
+ video_enc->bit_rate = video_bit_rate;
+ video_enc->frame_rate = frame_rate;
+
+ video_enc->width = frame_width;
+ video_enc->height = frame_height;
+ if (!intra_only)
+ video_enc->gop_size = gop_size;
+ else
+ video_enc->gop_size = 0;
+ if (video_qscale || same_quality) {
+ video_enc->flags |= CODEC_FLAG_QSCALE;
+ video_enc->quality = video_qscale;
+ }
+
+ oc->streams[nb_streams] = st;
+ nb_streams++;
+ }
+
+ if (use_audio) {
+ AVCodecContext *audio_enc;
+
+ st = av_mallocz(sizeof(AVStream));
+ if (!st) {
+ fprintf(stderr, "Could not alloc stream\n");
+ exit(1);
+ }
+ audio_enc = &st->codec;
+ codec_id = file_format->audio_codec;
+ if (audio_codec_id != CODEC_ID_NONE)
+ codec_id = audio_codec_id;
+ audio_enc->codec_id = codec_id;
+ audio_enc->codec_type = CODEC_TYPE_AUDIO;
+
+ audio_enc->bit_rate = audio_bit_rate;
+ audio_enc->sample_rate = audio_sample_rate;
+ audio_enc->channels = audio_channels;
+ oc->streams[nb_streams] = st;
+ nb_streams++;
+ }
+
+ oc->nb_streams = nb_streams;
+
+ if (!nb_streams) {
+ fprintf(stderr, "No audio or video selected\n");
+ exit(1);
+ }
+
+ if (str_title)
+ nstrcpy(oc->title, sizeof(oc->title), str_title);
+ if (str_author)
+ nstrcpy(oc->author, sizeof(oc->author), str_author);
+ if (str_copyright)
+ nstrcpy(oc->copyright, sizeof(oc->copyright), str_copyright);
+ if (str_comment)
+ nstrcpy(oc->comment, sizeof(oc->comment), str_comment);
+ }
+
+ output_files[nb_output_files] = oc;
+ /* dump the file content */
+ dump_format(oc, nb_output_files, filename, 1);
+ nb_output_files++;
+
+ strcpy(oc->filename, filename);
+ if (!(oc->format->flags & AVFMT_NOFILE)) {
+ /* test if it already exists to avoid loosing precious files */
+ if (!file_overwrite &&
+ (strchr(filename, ':') == NULL ||
+ strstart(filename, "file:", NULL))) {
+ if (url_exist(filename)) {
+ int c;
+
+ printf("File '%s' already exists. Overwrite ? [y/N] ", filename);
+ fflush(stdout);
+ c = getchar();
+ if (toupper(c) != 'Y') {
+ fprintf(stderr, "Not overwriting - exiting\n");
+ exit(1);
+ }
+ }
+ }
+
+ /* open the file */
+ if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {
+ fprintf(stderr, "Could not open '%s'\n", filename);
+ exit(1);
+ }
+ }
+
+ /* reset some options */
+ file_format = NULL;
+ audio_disable = 0;
+ video_disable = 0;
+ audio_codec_id = CODEC_ID_NONE;
+ video_codec_id = CODEC_ID_NONE;
+}
+
+void show_formats(void)
+{
+ AVFormat *f;
+ URLProtocol *up;
+ AVCodec *p;
+ const char **pp;
+
+ printf("File formats:\n");
+ printf(" Encoding:");
+ for(f = first_format; f != NULL; f = f->next) {
+ if (f->write_header)
+ printf(" %s", f->name);
+ }
+ printf("\n");
+ printf(" Decoding:");
+ for(f = first_format; f != NULL; f = f->next) {
+ if (f->read_header)
+ printf(" %s", f->name);
+ }
+ printf("\n");
+
+ printf("Codecs:\n");
+ printf(" Encoders:");
+ for(p = first_avcodec; p != NULL; p = p->next) {
+ if (p->encode)
+ printf(" %s", p->name);
+ }
+ printf("\n");
+
+ printf(" Decoders:");
+ for(p = first_avcodec; p != NULL; p = p->next) {
+ if (p->decode)
+ printf(" %s", p->name);
+ }
+ printf("\n");
+
+ printf("Supported file protocols:");
+ for(up = first_protocol; up != NULL; up = up->next)
+ printf(" %s:", up->name);
+ printf("\n");
+
+ printf("Frame size abbreviations: sqcif qcif cif 4cif\n");
+ printf("Motion estimation methods:");
+ pp = motion_str;
+ while (*pp) {
+ printf(" %s", *pp);
+ if ((pp - motion_str) == ME_ZERO)
+ printf("(fastest)");
+ else if ((pp - motion_str) == ME_FULL)
+ printf("(slowest)");
+ else if ((pp - motion_str) == ME_LOG)
+ printf("(default)");
+ pp++;
+ }
+ printf("\n");
+ exit(1);
+}
+
+void show_help(void)
+{
+ const OptionDef *po;
+ int i, expert;
+
+ printf("ffmpeg version " FFMPEG_VERSION ", Copyright (c) 2000,2001 Gerard Lantau\n"
+ "usage: ffmpeg [[options] -i input_file]... {[options] outfile}...\n"
+ "Hyper fast MPEG1/MPEG4/H263/RV and AC3/MPEG audio encoder\n"
+ "\n"
+ "Main options are:\n");
+ for(i=0;i<2;i++) {
+ if (i == 1)
+ printf("\nAdvanced options are:\n");
+ for(po = options; po->name != NULL; po++) {
+ char buf[64];
+ expert = (po->flags & OPT_EXPERT) != 0;
+ if (expert == i) {
+ strcpy(buf, po->name);
+ if (po->flags & HAS_ARG) {
+ strcat(buf, " ");
+ strcat(buf, po->argname);
+ }
+ printf("-%-17s %s\n", buf, po->help);
+ }
+ }
+ }
+
+ exit(1);
+}
+
+const OptionDef options[] = {
+ { "L", 0, {show_licence}, "show license" },
+ { "h", 0, {show_help}, "show help" },
+ { "formats", 0, {show_formats}, "show available formats, codecs, protocols, ..." },
+ { "f", HAS_ARG, {opt_format}, "force format", "fmt" },
+ { "i", HAS_ARG, {opt_input_file}, "input file name", "filename" },
+ { "y", OPT_BOOL, {int_arg:&file_overwrite}, "overwrite output files" },
+ { "map", HAS_ARG | OPT_EXPERT, {opt_map}, "set input stream mapping", "file:stream" },
+ { "t", HAS_ARG, {opt_recording_time}, "set the recording time", "duration" },
+ { "title", HAS_ARG | OPT_STRING, {str_arg: &str_title}, "set the title", "string" },
+ { "author", HAS_ARG | OPT_STRING, {str_arg: &str_author}, "set the author", "string" },
+ { "copyright", HAS_ARG | OPT_STRING, {str_arg: &str_copyright}, "set the copyright", "string" },
+ { "comment", HAS_ARG | OPT_STRING, {str_arg: &str_comment}, "set the comment", "string" },
+ /* video options */
+ { "b", HAS_ARG, {opt_video_bitrate}, "set video bitrate (in kbit/s)", "bitrate" },
+ { "r", HAS_ARG, {opt_frame_rate}, "set frame rate (in Hz)", "rate" },
+ { "s", HAS_ARG, {opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
+ { "g", HAS_ARG | OPT_EXPERT, {opt_gop_size}, "set the group of picture size", "gop_size" },
+ { "intra", OPT_BOOL | OPT_EXPERT, {int_arg: &intra_only}, "use only intra frames"},
+ { "vn", OPT_BOOL, {int_arg: &video_disable}, "disable video" },
+ { "qscale", HAS_ARG | OPT_EXPERT, {opt_qscale}, "use fixed video quantiser scale (VBR)", "q" },
+ { "vd", HAS_ARG | OPT_EXPERT, {opt_video_device}, "set video device", "device" },
+ { "vcodec", HAS_ARG | OPT_EXPERT, {opt_video_codec}, "force video codec", "codec" },
+ { "me", HAS_ARG | OPT_EXPERT, {opt_motion_estimation}, "set motion estimation method",
+ "method" },
+ { "sameq", OPT_BOOL, {int_arg: &same_quality},
+ "use same video quality as source (implies VBR)" },
+ /* audio options */
+ { "ab", HAS_ARG, {opt_audio_bitrate}, "set audio bitrate (in kbit/s)", "bitrate", },
+ { "ar", HAS_ARG, {opt_audio_rate}, "set audio sampling rate (in Hz)", "rate" },
+ { "ac", HAS_ARG, {opt_audio_channels}, "set number of audio channels", "channels" },
+ { "an", OPT_BOOL, {int_arg: &audio_disable}, "disable audio" },
+ { "ad", HAS_ARG | OPT_EXPERT, {opt_audio_device}, "set audio device", "device" },
+ { "acodec", HAS_ARG | OPT_EXPERT, {opt_audio_codec}, "force audio codec", "codec" },
+
+ { NULL, },
+};
+
+int main(int argc, char **argv)
+{
+ int optindex, i;
+ const char *opt, *arg;
+ const OptionDef *po;
+
+ register_all();
+
+ if (argc <= 1)
+ show_help();
+
+ optindex = 1;
+ while (optindex < argc) {
+ opt = argv[optindex++];
+
+ if (opt[0] == '-' && opt[1] != '\0') {
+ po = options;
+ while (po->name != NULL) {
+ if (!strcmp(opt + 1, po->name))
+ break;
+ po++;
+ }
+ if (!po->name) {
+ fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
+ exit(1);
+ }
+ arg = NULL;
+ if (po->flags & HAS_ARG)
+ arg = argv[optindex++];
+ if (po->flags & OPT_STRING) {
+ char *str;
+ str = strdup(arg);
+ *po->u.str_arg = str;
+ } else if (po->flags & OPT_BOOL) {
+ *po->u.int_arg = 1;
+ } else {
+ po->u.func_arg(arg);
+ }
+ } else {
+ opt_output_file(opt);
+ }
+ }
+
+
+ if (nb_input_files == 0) {
+ if (nb_output_files != 1) {
+ fprintf(stderr, "Only one output file supported when grabbing\n");
+ exit(1);
+ }
+ av_grab(output_files[0]);
+ } else {
+ if (nb_output_files <= 0) {
+ fprintf(stderr, "Must supply at least one output file\n");
+ exit(1);
+ }
+ av_encode(output_files, nb_output_files, input_files, nb_input_files,
+ stream_maps, nb_stream_maps);
+ }
+
+ /* close files */
+ for(i=0;i<nb_output_files;i++) {
+ if (!(output_files[i]->format->flags & AVFMT_NOFILE))
+ url_fclose(&output_files[i]->pb);
+ }
+ for(i=0;i<nb_input_files;i++) {
+ if (!(input_files[i]->format->flags & AVFMT_NOFILE))
+ url_fclose(&input_files[i]->pb);
+ }
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-01 04:08:03 +0000