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evil-qemacs/video.c
Charlie Gordon 28397f424f moved input_methods to QEmacsState 
qe_register_binding takes ModeDef* and returns status
cosmetic changes in QEDisplay API
added int dpy_init(QEditScreen *s, QEDisplay *dpy, int w, int h);
  copies *dpy (or dummy_dpy if NULL) to QEditScreen and calls method
simplified dpy_init methods and calls
inlined 5 more methods
moved dummy_dpy to display.c and simplified
simplified to_hex
simplified qe_colors array handling
2008-01-11 11:29:28 +00:00

980 lines
27 KiB
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/*
* Video mode for QEmacs
*
* Copyright (c) 2002, 2003 Fabrice Bellard.
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "qe.h"
#include "avformat.h"
#include <pthread.h>
#include <math.h>
static EditBufferDataType video_data_type;
//#define DEBUG
#define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
#define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
#define SAMPLE_ARRAY_SIZE 512
typedef struct PacketQueue {
AVPacketList *first_pkt, *last_pkt;
int nb_packets;
int size;
int abort_request;
pthread_mutex_t mutex;
pthread_cond_t cond;
} PacketQueue;
#define VIDEO_PICTURE_QUEUE_SIZE 1
typedef struct VideoPicture {
int delay; /* delay before showing the next picture */
QEBitmap *bmp; /* bitmap associated to the picture */
int width, height; /* source height & width */
int allocated;
} VideoPicture;
typedef struct VideoState {
EditState *edit_state;
pthread_t parse_tid;
pthread_t audio_tid;
pthread_t video_tid;
int no_background;
int abort_request;
int paused;
AVFormatContext *ic;
int audio_stream;
AVStream *audio_st;
PacketQueue audioq;
AVFormatContext *audio_out;
int16_t sample_array[SAMPLE_ARRAY_SIZE];
int sample_array_index;
int video_stream;
AVStream *video_st;
PacketQueue videoq;
VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
int pictq_size, pictq_rindex, pictq_windex;
pthread_mutex_t pictq_mutex;
pthread_cond_t pictq_cond;
QETimer *video_timer;
} VideoState;
static int video_buffer_load(EditBuffer *b, FILE *f)
{
/* no mode specific data */
return 0;
}
static int video_buffer_save(EditBuffer *b, const char *filename)
{
/* cannot save anything */
return -1;
}
static void video_buffer_close(EditBuffer *b)
{
}
static int video_mode_probe(ModeProbeData *pd)
{
AVProbeData avpd;
AVInputFormat *fmt;
avpd.filename = pd->filename;
avpd.buf = pd->buf;
avpd.buf_size = pd->buf_size;
fmt = av_probe_input_format(&avpd, 1);
if (!fmt)
return 0;
else
return 100;
}
/* packet queue handling */
static void packet_queue_init(PacketQueue *q)
{
memset(q, 0, sizeof(PacketQueue));
pthread_mutex_init(&q->mutex, NULL);
pthread_cond_init(&q->cond, NULL);
}
static void packet_queue_end(PacketQueue *q)
{
AVPacketList *pkt, *pkt1;
for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
pkt1 = pkt->next;
av_free_packet(&pkt->pkt);
}
pthread_mutex_destroy(&q->mutex);
pthread_cond_destroy(&q->cond);
}
static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
{
AVPacketList *pkt1;
pkt1 = av_malloc(sizeof(AVPacketList));
if (!pkt1)
return -1;
pkt1->pkt = *pkt;
pkt1->next = NULL;
pthread_mutex_lock(&q->mutex);
if (!q->last_pkt)
q->first_pkt = pkt1;
else
q->last_pkt->next = pkt1;
q->last_pkt = pkt1;
q->nb_packets++;
q->size += pkt1->pkt.size;
pthread_cond_signal(&q->cond);
pthread_mutex_unlock(&q->mutex);
return 0;
}
static void packet_queue_abort(PacketQueue *q)
{
pthread_mutex_lock(&q->mutex);
q->abort_request = 1;
pthread_cond_signal(&q->cond);
pthread_mutex_unlock(&q->mutex);
}
/* return < 0 if aborted, 0 if no packet and > 0 if packet. */
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
{
AVPacketList *pkt1;
int ret;
pthread_mutex_lock(&q->mutex);
for (;;) {
if (q->abort_request) {
ret = -1;
break;
}
pkt1 = q->first_pkt;
if (pkt1) {
q->first_pkt = pkt1->next;
if (!q->first_pkt)
q->last_pkt = NULL;
q->nb_packets--;
q->size -= pkt1->pkt.size;
*pkt = pkt1->pkt;
av_free_packet(pkt1);
ret = 1;
break;
} else if (!block) {
ret = 0;
break;
} else {
pthread_cond_wait(&q->cond, &q->mutex);
}
}
pthread_mutex_unlock(&q->mutex);
return ret;
}
/* called to display each frame */
static void video_refresh_timer(void *opaque)
{
EditState *s = opaque;
QEmacsState *qs = &qe_state;
VideoState *is = s->mode_data;
VideoPicture *vp;
if (is->video_st) {
if (is->pictq_size == 0) {
/* if no picture, need to wait */
is->video_timer = qe_add_timer(40, s, video_refresh_timer);
} else {
vp = &is->pictq[is->pictq_rindex];
/* launch timer for next picture */
is->video_timer = qe_add_timer(vp->delay, s, video_refresh_timer);
/* invalidate window */
edit_invalidate(s);
is->no_background = 1; /* XXX: horrible, needs complete rewrite */
/* display picture */
edit_display(qs);
dpy_flush(qs->screen);
/* update queue size and signal for next picture */
if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
is->pictq_rindex = 0;
pthread_mutex_lock(&is->pictq_mutex);
is->pictq_size--;
pthread_cond_signal(&is->pictq_cond);
pthread_mutex_unlock(&is->pictq_mutex);
}
} else if (is->audio_st) {
/* draw the next audio frame */
is->video_timer = qe_add_timer(40, s, video_refresh_timer);
/* if only audio stream, then display the audio bars (better
than nothing, just to test the implementation */
/* invalidate window */
edit_invalidate(s);
is->no_background = 1; /* XXX: horrible, needs complete rewrite */
/* display picture */
edit_display(qs);
dpy_flush(qs->screen);
} else {
is->video_timer = qe_add_timer(100, s, video_refresh_timer);
}
}
static void video_image_display(EditState *s)
{
VideoState *is = s->mode_data;
VideoPicture *vp;
float aspect_ratio;
int width, height, x, y;
vp = &is->pictq[is->pictq_rindex];
if (vp->bmp) {
/* XXX: use variable in the frame */
aspect_ratio = is->video_st->codec.aspect_ratio;
if (aspect_ratio <= 0.0)
aspect_ratio = (float)is->video_st->codec.width /
(float)is->video_st->codec.height;
/* XXX: we suppose the screen has a 1.0 pixel ratio */
height = s->height;
width = ((int)rint(height * aspect_ratio)) & -3;
if (width > s->width) {
width = s->width;
height = ((int)rint(width / aspect_ratio)) & -3;
}
x = (s->width - width) / 2;
y = (s->height - height) / 2;
if (!is->no_background) {
/* fill the background */
fill_border(s, x, y, width, height, QERGB(0x00, 0x00, 0x00));
} else {
is->no_background = 0;
}
bmp_draw(s->screen, vp->bmp, s->xleft + x, s->ytop + y,
width, height, 0, 0, 0);
} else {
fill_rectangle(s->screen,
s->xleft, s->ytop, s->width, s->height,
QERGB(0x00, 0x00, 0x00));
}
}
static void video_audio_display(EditState *s)
{
VideoState *is = s->mode_data;
int i, x, y1, y, h, ys;
fill_rectangle(s->screen,
s->xleft, s->ytop, s->width, s->height,
QERGB(0x00, 0x00, 0x00));
if (is->sample_array_index >= SAMPLE_ARRAY_SIZE) {
i = 0;
y1 = (s->height >> 1) + s->ytop;
h = y1;
for (x = 0; x < s->width; x++) {
y = (is->sample_array[i] * h) >> 15;
if (y < 0) {
y = -y;
ys = y1 - y;
} else {
ys = y1;
}
fill_rectangle(s->screen,
s->xleft + x, ys, 1, y,
QERGB(0xff, 0xff, 0xff));
if (++i >= SAMPLE_ARRAY_SIZE)
i = 0;
}
is->sample_array_index = 0;
}
}
/* display the current picture, if any */
static void video_display(EditState *s)
{
VideoState *is = s->mode_data;
if (s->display_invalid) {
if (is->video_st)
video_image_display(s);
else if (is->audio_st)
video_audio_display(s);
s->display_invalid = 0;
}
}
/* allocate a picture (needs to do that in main thread to avoid
potential locking problems */
static void alloc_picture(void *opaque)
{
VideoState *is = opaque;
EditState *s = is->edit_state;
VideoPicture *vp;
int is_yuv;
vp = &is->pictq[is->pictq_windex];
bmp_free(s->screen, &vp->bmp);
/* XXX: use generic function */
switch (is->video_st->codec.pix_fmt) {
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV444P:
case PIX_FMT_YUV422:
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
is_yuv = 1;
break;
default:
is_yuv = 0;
break;
}
retry:
if (is_yuv) {
vp->bmp = bmp_alloc(s->screen,
is->video_st->codec.width,
is->video_st->codec.height,
QEBITMAP_FLAG_VIDEO);
/* currently we cannot resize, so we fallback to standard if
no exact size */
if (vp->bmp->width != is->video_st->codec.width ||
vp->bmp->height != is->video_st->codec.height) {
is_yuv = 0;
bmp_free(s->screen, &vp->bmp);
goto retry;
}
} else {
vp->bmp = bmp_alloc(s->screen,
is->video_st->codec.width,
is->video_st->codec.height,
0);
}
vp->width = is->video_st->codec.width;
vp->height = is->video_st->codec.height;
pthread_mutex_lock(&is->pictq_mutex);
vp->allocated = 1;
pthread_cond_signal(&is->pictq_cond);
pthread_mutex_unlock(&is->pictq_mutex);
}
static int output_picture(VideoState *is, AVPicture *src_pict)
{
EditState *s = is->edit_state;
VideoPicture *vp;
QEPicture qepict;
int dst_pix_fmt, i;
AVPicture pict;
/* wait until we have space to put a new picture */
pthread_mutex_lock(&is->pictq_mutex);
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
!is->videoq.abort_request) {
pthread_cond_wait(&is->pictq_cond, &is->pictq_mutex);
}
pthread_mutex_unlock(&is->pictq_mutex);
if (is->videoq.abort_request)
return -1;
vp = &is->pictq[is->pictq_windex];
/* alloc or resize hardware picture buffer */
if (!vp->bmp ||
vp->width != is->video_st->codec.width ||
vp->height != is->video_st->codec.height) {
vp->allocated = 0;
/* the allocation must be done in the main thread to avoid
locking problems */
qe_add_timer(0, is, alloc_picture);
/* wait until the picture is allocated */
pthread_mutex_lock(&is->pictq_mutex);
while (!vp->allocated && !is->videoq.abort_request) {
pthread_cond_wait(&is->pictq_cond, &is->pictq_mutex);
}
pthread_mutex_unlock(&is->pictq_mutex);
if (is->videoq.abort_request)
return -1;
}
if (vp->bmp) {
/* get a pointer on the bitmap */
bmp_lock(s->screen, vp->bmp, &qepict,
0, 0, vp->bmp->width, vp->bmp->height);
dst_pix_fmt = qe_bitmap_format_to_pix_fmt(vp->bmp->format);
for (i = 0; i < 4; i++) {
pict.data[i] = qepict.data[i];
pict.linesize[i] = qepict.linesize[i];
}
img_convert(&pict, dst_pix_fmt,
src_pict, is->video_st->codec.pix_fmt,
is->video_st->codec.width, is->video_st->codec.height);
/* update the bitmap content */
bmp_unlock(s->screen, vp->bmp);
/* compute delay for the next frame */
vp->delay = (1000 * is->video_st->codec.frame_rate_base) /
is->video_st->codec.frame_rate;
/* XXX: just fixes .asf! */
if (vp->delay > 40)
vp->delay = 40;
/* now we can update the picture count */
if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
is->pictq_windex = 0;
pthread_mutex_lock(&is->pictq_mutex);
is->pictq_size++;
pthread_mutex_unlock(&is->pictq_mutex);
}
return 0;
}
static void *video_thread(void *arg)
{
VideoState *is = arg;
AVPacket pkt1, *pkt = &pkt1;
unsigned char *ptr;
int len, len1, got_picture, i;
AVFrame frame;
AVPicture pict;
for (;;) {
while (is->paused && !is->videoq.abort_request) {
usleep(10000);
}
if (packet_queue_get(&is->videoq, pkt, 1) < 0)
break;
ptr = pkt->data;
if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
avpicture_fill(&pict, ptr,
is->video_st->codec.pix_fmt,
is->video_st->codec.width,
is->video_st->codec.height);
if (output_picture(is, &pict) < 0)
goto the_end;
} else {
len = pkt->size;
while (len > 0) {
len1 = avcodec_decode_video(&is->video_st->codec,
&frame, &got_picture, ptr, len);
if (len1 < 0)
break;
if (got_picture) {
for (i = 0; i < 4; i++) {
pict.data[i] = frame.data[i];
pict.linesize[i] = frame.linesize[i];
}
if (output_picture(is, &pict) < 0)
goto the_end;
}
ptr += len1;
len -= len1;
}
}
av_free_packet(pkt);
}
the_end:
return NULL;
}
static void output_audio(VideoState *is, short *samples, int samples_size)
{
int len, n, channels, i;
int16_t *out, *in;
/* copy samples for viewing in editor window */
len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
if (len > 0) {
channels = is->audio_st->codec.channels;
n = samples_size / (2 * channels);
if (len > n)
len = n;
out = is->sample_array + is->sample_array_index;
in = samples;
for (i = 0; i < len; i++) {
out[i] = in[0];
in += channels;
}
is->sample_array_index += len;
}
is->audio_out->oformat->write_packet(is->audio_out, 0,
(uint8_t *)samples, samples_size, 0);
}
static void *audio_thread(void *arg)
{
VideoState *is = arg;
AVPacket pkt1, *pkt = &pkt1;
unsigned char *ptr;
int len, len1, data_size;
short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2];
for (;;) {
while (is->paused && !is->audioq.abort_request) {
usleep(10000);
}
if (packet_queue_get(&is->audioq, pkt, 1) < 0)
break;
ptr = pkt->data;
len = pkt->size;
while (len > 0) {
len1 = avcodec_decode_audio(&is->audio_st->codec,
samples, &data_size, ptr, len);
if (len1 < 0)
break;
if (data_size > 0) {
output_audio(is, samples, data_size);
}
ptr += len1;
len -= len1;
}
av_free_packet(pkt);
}
return NULL;
}
/* open a given stream. Return 0 if OK */
static int stream_open(EditState *s, int stream_index)
{
VideoState *is = s->mode_data;
AVFormatContext *ic = is->ic;
AVCodecContext *enc;
AVCodec *codec;
AVStream *st;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return -1;
enc = &ic->streams[stream_index]->codec;
/* prepare audio output */
if (enc->codec_type == CODEC_TYPE_AUDIO) {
is->audio_out = av_mallocz(sizeof(AVFormatContext));
is->audio_out->oformat = guess_format("audio_device", NULL, NULL);
st = av_new_stream(is->audio_out, 0);
st->codec.codec_type = CODEC_TYPE_AUDIO;
st->codec.codec_id = is->audio_out->oformat->audio_codec;
st->codec.sample_rate = enc->sample_rate;
st->codec.channels = enc->channels;
av_set_parameters(is->audio_out, NULL);
/* cannot open audio: return error */
if (av_write_header(is->audio_out) != 0)
return -1;
}
codec = avcodec_find_decoder(enc->codec_id);
if (!codec ||
avcodec_open(enc, codec) < 0)
return -1;
switch (enc->codec_type) {
case CODEC_TYPE_AUDIO:
is->audio_stream = stream_index;
is->audio_st = ic->streams[stream_index];
packet_queue_init(&is->audioq);
pthread_create(&is->audio_tid, NULL, audio_thread, is);
break;
case CODEC_TYPE_VIDEO:
is->video_stream = stream_index;
is->video_st = ic->streams[stream_index];
packet_queue_init(&is->videoq);
pthread_create(&is->video_tid, NULL, video_thread, is);
break;
default:
break;
}
return 0;
}
static void stream_close(EditState *s, int stream_index)
{
VideoState *is = s->mode_data;
AVFormatContext *ic = is->ic;
AVCodecContext *enc;
enc = &ic->streams[stream_index]->codec;
switch (enc->codec_type) {
case CODEC_TYPE_AUDIO:
packet_queue_abort(&is->audioq);
pthread_join(is->audio_tid, NULL);
packet_queue_end(&is->audioq);
av_write_trailer(is->audio_out);
av_freep(&is->audio_out);
break;
case CODEC_TYPE_VIDEO:
packet_queue_abort(&is->videoq);
/* note: we also signal this mutex to make sure we deblock the
video thread in all cases */
pthread_mutex_lock(&is->pictq_mutex);
pthread_cond_signal(&is->pictq_cond);
pthread_mutex_unlock(&is->pictq_mutex);
pthread_join(is->video_tid, NULL);
packet_queue_end(&is->videoq);
break;
default:
break;
}
avcodec_close(enc);
switch (enc->codec_type) {
case CODEC_TYPE_AUDIO:
is->audio_st = NULL;
is->audio_stream = -1;
break;
case CODEC_TYPE_VIDEO:
is->video_st = NULL;
is->video_stream = -1;
break;
default:
break;
}
}
/* this thread gets the stream from the disk or the network */
static void *decode_thread(void *arg)
{
EditState *s = arg;
VideoState *is = s->mode_data;
AVFormatContext *ic;
int err, i, ret, video_index, audio_index;
AVPacket pkt1, *pkt = &pkt1;
video_index = -1;
audio_index = -1;
is->video_stream = -1;
is->audio_stream = -1;
err = av_open_input_file(&ic, s->b->filename, NULL, 0, NULL);
if (err < 0)
return NULL;
is->ic = ic;
err = av_find_stream_info(ic);
if (err < 0)
goto fail;
for (i = 0; i < ic->nb_streams; i++) {
AVCodecContext *enc = &ic->streams[i]->codec;
switch (enc->codec_type) {
case CODEC_TYPE_AUDIO:
if (audio_index < 0)
audio_index = i;
break;
case CODEC_TYPE_VIDEO:
if (video_index < 0)
video_index = i;
break;
default:
break;
}
}
#ifdef DEBUG
dump_format(ic, 0, s->b->filename, 0);
#endif
/* open the streams */
if (audio_index >= 0) {
stream_open(s, audio_index);
}
if (video_index >= 0) {
stream_open(s, video_index);
}
if (is->video_stream < 0 && is->audio_stream < 0) {
goto fail;
}
for (;;) {
if (is->abort_request)
break;
/* if the queue are full, no need to read more */
if (is->audioq.size > MAX_AUDIOQ_SIZE ||
is->videoq.size > MAX_VIDEOQ_SIZE) {
struct timespec tv;
/* wait 10 ms */
tv.tv_sec = 0;
tv.tv_nsec = 10 * 1000000;
nanosleep(&tv, NULL);
continue;
}
ret = av_read_packet(ic, pkt);
if (ret < 0) {
break;
}
if (pkt->stream_index == is->audio_stream) {
packet_queue_put(&is->audioq, pkt);
} else if (pkt->stream_index == is->video_stream) {
packet_queue_put(&is->videoq, pkt);
} else {
av_free_packet(pkt);
}
}
/* wait until the fifo are flushed */
while (!is->abort_request && (is->audioq.size > 0 || is->videoq.size > 0)) {
usleep(10000);
}
fail:
/* close each stream */
if (is->audio_stream >= 0)
stream_close(s, is->audio_stream);
if (is->video_stream >= 0)
stream_close(s, is->video_stream);
av_close_input_file(is->ic);
is->ic = NULL; /* safety */
return NULL;
}
/* pause or resume the video */
static void video_pause(EditState *s)
{
VideoState *is = s->mode_data;
is->paused = !is->paused;
}
static int video_mode_init(EditState *s, ModeSavedData *saved_data)
{
VideoState *is = s->mode_data;
QEmacsState *qs = s->qe_state;
int err, video_playing;
EditState *e;
/* XXX: avoid annoying Overwrite in mode line */
s->insert = 1;
/* start video display */
is->edit_state = s;
pthread_mutex_init(&is->pictq_mutex, NULL);
pthread_cond_init(&is->pictq_cond, NULL);
/* add the refresh timer to draw the picture */
is->video_timer = qe_add_timer(0, s, video_refresh_timer);
/* if there is already a window with this video playing, then we
stop this new instance (C-x 2 case) */
video_playing = 0;
for (e = qs->first_window; e != NULL; e = e->next_window) {
if (e->mode == s->mode && e != s && e->b == s->b) {
VideoState *is1 = e->mode_data;
if (!is1->paused)
video_playing = 1;
}
}
if (video_playing) {
is->paused = 1;
}
is->sample_array_index = SAMPLE_ARRAY_SIZE;
err = pthread_create(&is->parse_tid, NULL, decode_thread, s);
if (err != 0)
return -1;
return 0;
}
static void video_mode_close(EditState *s)
{
VideoState *is = s->mode_data;
VideoPicture *vp;
int i;
/* XXX: use a special url_shutdown call to abort parse cleanly */
is->abort_request = 1;
pthread_join(is->parse_tid, NULL);
/* free all pictures */
for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
vp = &is->pictq[i];
bmp_free(s->screen, &vp->bmp);
}
if (is->video_timer) {
qe_kill_timer(is->video_timer);
}
}
char *get_stream_id(AVFormatContext *ic, AVStream *st, char *buf, int buf_size)
{
int flags;
flags = ic->iformat->flags;
if (flags & AVFMT_SHOW_IDS) {
snprintf(buf, buf_size, "%d/0x%x", st->index, st->id);
} else {
snprintf(buf, buf_size, "%d", st->index);
}
return buf;
}
static int video_mode_line(EditState *s, char *buf, int buf_size)
{
int pos;
const char *name;
VideoState *is = s->mode_data;
AVCodec *codec;
AVCodecContext *dec;
char buf1[32];
pos = basic_mode_line(s, buf, buf_size, '-');
if (is->paused) {
pos += snprintf(buf + pos, buf_size - pos, "[paused]--");
}
if (is->ic) {
pos += snprintf(buf + pos, buf_size - pos, "%s",
is->ic->iformat->name);
}
if (is->video_st) {
name = "???";
dec = &is->video_st->codec;
codec = dec->codec;
if (codec)
name = codec->name;
pos += snprintf(buf + pos, buf_size - pos, "--%s/%s[%dx%d@%0.2ffps]",
name, get_stream_id(is->ic, is->video_st, buf1, sizeof(buf1)),
dec->width, dec->height,
(float)dec->frame_rate / dec->frame_rate_base);
}
if (is->audio_st) {
name = "???";
dec = &is->audio_st->codec;
codec = dec->codec;
if (codec)
name = codec->name;
pos += snprintf(buf + pos, buf_size - pos, "--%s/%s[%dHz:%dch]",
name, get_stream_id(is->ic, is->audio_st, buf1, sizeof(buf1)),
dec->sample_rate, dec->channels);
}
return pos;
}
static void av_cycle_stream(EditState *s, int codec_type)
{
VideoState *is = s->mode_data;
AVFormatContext *ic = is->ic;
int start_index, stream_index;
AVStream *st;
char buf[32];
if (codec_type == CODEC_TYPE_VIDEO)
start_index = is->video_stream;
else
start_index = is->audio_stream;
if (start_index < 0) {
put_status(s, "No %s stream to cycle",
(codec_type == CODEC_TYPE_VIDEO) ? "video" : "audio");
return;
}
stream_index = start_index;
for (;;) {
if (++stream_index >= ic->nb_streams)
stream_index = 0;
if (stream_index == start_index) {
put_status(s, "Only one %s stream",
(codec_type == CODEC_TYPE_VIDEO) ? "video" : "audio");
return;
}
st = ic->streams[stream_index];
if (st->codec.codec_type == codec_type)
break;
}
put_status(s, "Switching to %s stream %s",
(codec_type == CODEC_TYPE_VIDEO) ? "video" : "audio",
get_stream_id(ic, st, buf, sizeof(buf)));
stream_close(s, start_index);
stream_open(s, stream_index);
}
/* specific image commands */
static CmdDef video_commands[] = {
CMD0( ' ', 'p',
"av-pause", video_pause)
CMD1( 'v', KEY_NONE,
"av-cycle-video", av_cycle_stream, CODEC_TYPE_VIDEO)
CMD1( 'a', KEY_NONE,
"av-cycle-audio", av_cycle_stream, CODEC_TYPE_AUDIO)
CMD_DEF_END,
};
ModeDef video_mode = {
"av",
instance_size: sizeof(VideoState),
mode_probe: video_mode_probe,
mode_init: video_mode_init,
mode_close: video_mode_close,
display: video_display,
data_type: &video_data_type,
mode_line: video_mode_line,
};
static EditBufferDataType video_data_type = {
"av",
video_buffer_load,
video_buffer_save,
video_buffer_close,
};
int video_init(void)
{
eb_register_data_type(&video_data_type);
qe_register_mode(&video_mode);
qe_register_cmd_table(video_commands, &video_mode);
/* additional mode specific keys */
qe_register_binding('f', "toggle-full-screen", &video_mode);
return 0;
}
qe_module_init(video_init);
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