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mpv/video/decode/dec_video.c
wm4 66e20ef8ad video: remove --flip 
The --flip option flipped the image upside-down, by trying to use VO
support, or if not available, by inserting a video filter. I'm not sure
why it existed. Maybe it was important in ancient times when VfW based
decoders output an image this way (but even then, flipping an image is a
free operation by negating the stride).

One nice thing about this is that it provided a possible path for
implementing video orientation, which is a feature we should probably
support eventually. The important part is that it would be for free for
VOs that support it, and would work even with hardware decoding.

But for now get rid of it. It's useless, trivial, stands in the way, and
supporting video orientation would require solving other problems first.
2013-12-05 22:58:54 +01:00

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/*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "mpvcore/options.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include "mpvcore/mp_msg.h"
#include "osdep/timer.h"
#include "stream/stream.h"
#include "demux/packet.h"
#include "mpvcore/codecs.h"
#include "video/out/vo.h"
#include "video/csputils.h"
#include "demux/stheader.h"
#include "video/decode/vd.h"
#include "video/filter/vf.h"
#include "video/decode/dec_video.h"
extern const vd_functions_t mpcodecs_vd_ffmpeg;
/* Please do not add any new decoders here. If you want to implement a new
* decoder, add it to libavcodec, except for wrappers around external
* libraries and decoders requiring binary support. */
const vd_functions_t * const mpcodecs_vd_drivers[] = {
&mpcodecs_vd_ffmpeg,
/* Please do not add any new decoders here. If you want to implement a new
* decoder, add it to libavcodec, except for wrappers around external
* libraries and decoders requiring binary support. */
NULL
};
void video_reset_decoding(struct dec_video *d_video)
{
video_vd_control(d_video, VDCTRL_RESET, NULL);
if (d_video->vf_initialized == 1)
vf_chain_seek_reset(d_video->vfilter);
d_video->num_buffered_pts = 0;
d_video->last_pts = MP_NOPTS_VALUE;
d_video->last_packet_pdts = MP_NOPTS_VALUE;
d_video->decoded_pts = MP_NOPTS_VALUE;
d_video->codec_pts = MP_NOPTS_VALUE;
d_video->codec_dts = MP_NOPTS_VALUE;
d_video->sorted_pts = MP_NOPTS_VALUE;
d_video->unsorted_pts = MP_NOPTS_VALUE;
}
int video_vd_control(struct dec_video *d_video, int cmd, void *arg)
{
const struct vd_functions *vd = d_video->vd_driver;
if (vd)
return vd->control(d_video, cmd, arg);
return CONTROL_UNKNOWN;
}
int video_set_colors(struct dec_video *d_video, const char *item, int value)
{
vf_instance_t *vf = d_video->vfilter;
vf_equalizer_t data;
data.item = item;
data.value = value;
mp_dbg(MSGT_DECVIDEO, MSGL_V, "set video colors %s=%d \n", item, value);
if (vf) {
int ret = vf_control(vf, VFCTRL_SET_EQUALIZER, &data);
if (ret == CONTROL_TRUE)
return 1;
}
mp_tmsg(MSGT_DECVIDEO, MSGL_V, "Video attribute '%s' is not supported by selected vo.\n",
item);
return 0;
}
int video_get_colors(struct dec_video *d_video, const char *item, int *value)
{
vf_instance_t *vf = d_video->vfilter;
vf_equalizer_t data;
data.item = item;
mp_dbg(MSGT_DECVIDEO, MSGL_V, "get video colors %s \n", item);
if (vf) {
int ret = vf_control(vf, VFCTRL_GET_EQUALIZER, &data);
if (ret == CONTROL_TRUE) {
*value = data.value;
return 1;
}
}
return 0;
}
void video_reinit_vo(struct dec_video *d_video)
{
video_vd_control(d_video, VDCTRL_REINIT_VO, NULL);
}
void video_uninit(struct dec_video *d_video)
{
if (d_video->vd_driver) {
mp_tmsg(MSGT_DECVIDEO, MSGL_V, "Uninit video.\n");
d_video->vd_driver->uninit(d_video);
}
talloc_free(d_video->priv);
vf_uninit_filter_chain(d_video->vfilter);
talloc_free(d_video);
}
static int init_video_codec(struct dec_video *d_video, const char *decoder)
{
if (!d_video->vd_driver->init(d_video, decoder)) {
mp_tmsg(MSGT_DECVIDEO, MSGL_V, "Video decoder init failed.\n");
return 0;
}
return 1;
}
struct mp_decoder_list *video_decoder_list(void)
{
struct mp_decoder_list *list = talloc_zero(NULL, struct mp_decoder_list);
for (int i = 0; mpcodecs_vd_drivers[i] != NULL; i++)
mpcodecs_vd_drivers[i]->add_decoders(list);
return list;
}
static struct mp_decoder_list *mp_select_video_decoders(const char *codec,
char *selection)
{
struct mp_decoder_list *list = video_decoder_list();
struct mp_decoder_list *new = mp_select_decoders(list, codec, selection);
talloc_free(list);
return new;
}
static const struct vd_functions *find_driver(const char *name)
{
for (int i = 0; mpcodecs_vd_drivers[i] != NULL; i++) {
if (strcmp(mpcodecs_vd_drivers[i]->name, name) == 0)
return mpcodecs_vd_drivers[i];
}
return NULL;
}
bool video_init_best_codec(struct dec_video *d_video, char* video_decoders)
{
assert(!d_video->vd_driver);
video_reset_decoding(d_video);
d_video->has_broken_packet_pts = -10; // needs 10 packets to reach decision
struct mp_decoder_entry *decoder = NULL;
struct mp_decoder_list *list =
mp_select_video_decoders(d_video->header->codec, video_decoders);
mp_print_decoders(MSGT_DECVIDEO, MSGL_V, "Codec list:", list);
for (int n = 0; n < list->num_entries; n++) {
struct mp_decoder_entry *sel = &list->entries[n];
const struct vd_functions *driver = find_driver(sel->family);
if (!driver)
continue;
mp_tmsg(MSGT_DECVIDEO, MSGL_V, "Opening video decoder %s:%s\n",
sel->family, sel->decoder);
d_video->vd_driver = driver;
if (init_video_codec(d_video, sel->decoder)) {
decoder = sel;
break;
}
d_video->vd_driver = NULL;
mp_tmsg(MSGT_DECVIDEO, MSGL_WARN, "Video decoder init failed for "
"%s:%s\n", sel->family, sel->decoder);
}
if (d_video->vd_driver) {
d_video->decoder_desc =
talloc_asprintf(d_video, "%s [%s:%s]", decoder->desc, decoder->family,
decoder->decoder);
mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Selected video codec: %s\n",
d_video->decoder_desc);
} else {
mp_msg(MSGT_DECVIDEO, MSGL_ERR,
"Failed to initialize a video decoder for codec '%s'.\n",
d_video->header->codec ? d_video->header->codec : "<unknown>");
}
talloc_free(list);
return !!d_video->vd_driver;
}
static void add_pts_to_sort(struct dec_video *d_video, double pts)
{
if (pts != MP_NOPTS_VALUE) {
int delay = -1;
video_vd_control(d_video, VDCTRL_QUERY_UNSEEN_FRAMES, &delay);
if (delay >= 0 && delay < d_video->num_buffered_pts)
d_video->num_buffered_pts = delay;
if (d_video->num_buffered_pts ==
sizeof(d_video->buffered_pts) / sizeof(double))
mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Too many buffered pts\n");
else {
int i, j;
for (i = 0; i < d_video->num_buffered_pts; i++)
if (d_video->buffered_pts[i] < pts)
break;
for (j = d_video->num_buffered_pts; j > i; j--)
d_video->buffered_pts[j] = d_video->buffered_pts[j - 1];
d_video->buffered_pts[i] = pts;
d_video->num_buffered_pts++;
}
}
}
// Return true if pts1 comes before pts2. pts1 can be MP_NOPTS_VALUE, but pts2
// always has to be valid. pts1 can't be equal or larger than pts2.
#define PTS_IS_ORDERED(pts1, pts2) \
((pts2) != MP_NOPTS_VALUE && ((pts1) == MP_NOPTS_VALUE || ((pts1) < (pts2))))
static double retrieve_sorted_pts(struct dec_video *d_video, double codec_pts)
{
struct MPOpts *opts = d_video->opts;
double sorted_pts;
if (d_video->num_buffered_pts) {
d_video->num_buffered_pts--;
sorted_pts = d_video->buffered_pts[d_video->num_buffered_pts];
} else {
mp_msg(MSGT_CPLAYER, MSGL_ERR,
"No pts value from demuxer to use for frame!\n");
sorted_pts = MP_NOPTS_VALUE;
}
if (!PTS_IS_ORDERED(d_video->sorted_pts, sorted_pts))
d_video->num_sorted_pts_problems++;
d_video->sorted_pts = sorted_pts;
if (!PTS_IS_ORDERED(d_video->unsorted_pts, codec_pts))
d_video->num_unsorted_pts_problems++;
d_video->unsorted_pts = codec_pts;
if (d_video->header->video->avi_dts) {
// Actually, they don't need to be sorted, we just reuse the buffering.
d_video->pts_assoc_mode = 2;
} else if (opts->user_pts_assoc_mode) {
d_video->pts_assoc_mode = opts->user_pts_assoc_mode;
} else if (d_video->pts_assoc_mode == 0) {
if (codec_pts != MP_NOPTS_VALUE)
d_video->pts_assoc_mode = 1;
else
d_video->pts_assoc_mode = 2;
} else {
int probcount1 = d_video->num_unsorted_pts_problems;
int probcount2 = d_video->num_sorted_pts_problems;
if (d_video->pts_assoc_mode == 2) {
int tmp = probcount1;
probcount1 = probcount2;
probcount2 = tmp;
}
if (probcount1 >= probcount2 * 1.5 + 2) {
d_video->pts_assoc_mode = 3 - d_video->pts_assoc_mode;
mp_msg(MSGT_DECVIDEO, MSGL_WARN,
"Switching to pts association mode %d.\n",
d_video->pts_assoc_mode);
}
}
return d_video->pts_assoc_mode == 1 ? codec_pts : sorted_pts;
}
struct mp_image *video_decode(struct dec_video *d_video,
struct demux_packet *packet,
int drop_frame)
{
struct MPOpts *opts = d_video->opts;
bool sort_pts =
(opts->user_pts_assoc_mode != 1 || d_video->header->video->avi_dts)
&& opts->correct_pts;
double pkt_pts = packet ? packet->pts : MP_NOPTS_VALUE;
double pkt_dts = packet ? packet->dts : MP_NOPTS_VALUE;
double pkt_pdts = pkt_pts == MP_NOPTS_VALUE ? pkt_dts : pkt_pts;
if (pkt_pdts != MP_NOPTS_VALUE)
d_video->last_packet_pdts = pkt_pdts;
if (sort_pts)
add_pts_to_sort(d_video, pkt_pdts);
double prev_codec_pts = d_video->codec_pts;
double prev_codec_dts = d_video->codec_dts;
struct mp_image *mpi = d_video->vd_driver->decode(d_video, packet, drop_frame);
//------------------------ frame decoded. --------------------
if (!mpi || drop_frame) {
talloc_free(mpi);
return NULL; // error / skipped frame
}
if (opts->field_dominance == 0)
mpi->fields |= MP_IMGFIELD_TOP_FIRST;
else if (opts->field_dominance == 1)
mpi->fields &= ~MP_IMGFIELD_TOP_FIRST;
// Note: the PTS is reordered, but the DTS is not. Both should be monotonic.
double pts = d_video->codec_pts;
double dts = d_video->codec_dts;
if (pts == MP_NOPTS_VALUE) {
d_video->codec_pts = prev_codec_pts;
} else if (pts <= prev_codec_pts) {
d_video->num_codec_pts_problems++;
}
if (dts == MP_NOPTS_VALUE) {
d_video->codec_dts = prev_codec_dts;
} else if (dts <= prev_codec_dts) {
d_video->num_codec_dts_problems++;
}
// If PTS is unset, or non-monotonic, fall back to DTS.
if ((d_video->num_codec_pts_problems > d_video->num_codec_dts_problems ||
pts == MP_NOPTS_VALUE) && dts != MP_NOPTS_VALUE)
pts = dts;
// Alternative PTS determination methods
if (sort_pts)
pts = retrieve_sorted_pts(d_video, pts);
if (!opts->correct_pts || pts == MP_NOPTS_VALUE) {
if (opts->correct_pts)
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "No video PTS! Making something up.\n");
double frame_time = 1.0f / (d_video->fps > 0 ? d_video->fps : 25);
double base = d_video->last_packet_pdts;
pts = d_video->decoded_pts;
if (pts == MP_NOPTS_VALUE)
pts = base == MP_NOPTS_VALUE ? 0 : base;
pts += frame_time;
}
if (d_video->decoded_pts != MP_NOPTS_VALUE && pts <= d_video->decoded_pts) {
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Non-monotonic video pts: %f <= %f\n",
pts, d_video->decoded_pts);
pts = d_video->decoded_pts;
}
if (d_video->has_broken_packet_pts < 0)
d_video->has_broken_packet_pts++;
if (d_video->num_codec_pts_problems || pkt_pts == MP_NOPTS_VALUE)
d_video->has_broken_packet_pts = 1;
mpi->pts = pts;
d_video->decoded_pts = pts;
return mpi;
}
int mpcodecs_reconfig_vo(struct dec_video *d_video,
const struct mp_image_params *params)
{
struct MPOpts *opts = d_video->opts;
vf_instance_t *vf = d_video->vfilter;
struct mp_image_params p = *params;
struct sh_video *sh = d_video->header->video;
d_video->vf_reconfig_count++;
mp_msg(MSGT_DECVIDEO, MSGL_V,
"VIDEO: %dx%d %5.3f fps %5.1f kbps (%4.1f kB/s)\n",
p.w, p.h, sh->fps, sh->i_bps * 0.008,
sh->i_bps / 1000.0);
mp_msg(MSGT_DECVIDEO, MSGL_V, "VDec: vo config request - %d x %d (%s)\n",
p.w, p.h, vo_format_name(p.imgfmt));
// check if libvo and codec has common outfmt (no conversion):
int flags = 0;
for (;;) {
mp_msg(MSGT_VFILTER, MSGL_V, "Trying filter chain:\n");
vf_print_filter_chain(MSGL_V, vf);
flags = vf->query_format(vf, p.imgfmt);
mp_msg(MSGT_CPLAYER, MSGL_DBG2, "vo_debug: query(%s) returned 0x%X \n",
vo_format_name(p.imgfmt), flags);
if ((flags & VFCAP_CSP_SUPPORTED_BY_HW)
|| (flags & VFCAP_CSP_SUPPORTED))
{
break;
}
// TODO: no match - we should use conversion...
if (strcmp(vf->info->name, "scale")) {
mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "Could not find matching colorspace - retrying with -vf scale...\n");
vf = vf_open_filter(opts, vf, "scale", NULL);
continue;
}
mp_tmsg(MSGT_CPLAYER, MSGL_WARN,
"The selected video_out device is incompatible with this codec.\n"\
"Try appending the scale filter to your filter list,\n"\
"e.g. -vf filter,scale instead of -vf filter.\n");
mp_tmsg(MSGT_VFILTER, MSGL_WARN, "Attempted filter chain:\n");
vf_print_filter_chain(MSGL_WARN, vf);
d_video->vf_initialized = -1;
return -1; // failed
}
d_video->vfilter = vf;
float decoder_aspect = p.d_w / (float)p.d_h;
if (d_video->initial_decoder_aspect == 0)
d_video->initial_decoder_aspect = decoder_aspect;
// We normally prefer the container aspect, unless the decoder aspect
// changes at least once.
if (d_video->initial_decoder_aspect == decoder_aspect) {
if (sh->aspect > 0)
vf_set_dar(&p.d_w, &p.d_h, p.w, p.h, sh->aspect);
} else {
// Even if the aspect switches back, don't use container aspect again.
d_video->initial_decoder_aspect = -1;
}
float force_aspect = opts->movie_aspect;
if (force_aspect > -1.0 && d_video->stream_aspect != 0.0)
force_aspect = d_video->stream_aspect;
if (force_aspect > 0)
vf_set_dar(&p.d_w, &p.d_h, p.w, p.h, force_aspect);
if (abs(p.d_w - p.w) >= 4 || abs(p.d_h - p.h) >= 4) {
mp_tmsg(MSGT_CPLAYER, MSGL_V, "Aspect ratio is %.2f:1 - "
"scaling to correct movie aspect.\n", sh->aspect);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_ASPECT=%1.4f\n", sh->aspect);
} else {
p.d_w = p.w;
p.d_h = p.h;
}
// Apply user overrides
if (opts->requested_colorspace != MP_CSP_AUTO)
p.colorspace = opts->requested_colorspace;
if (opts->requested_input_range != MP_CSP_LEVELS_AUTO)
p.colorlevels = opts->requested_input_range;
p.outputlevels = opts->requested_output_range;
// Detect colorspace from resolution.
// Make sure the user-overrides are consistent (no RGB csp for YUV, etc.).
mp_image_params_guess_csp(&p);
// Time to config libvo!
mp_msg(MSGT_CPLAYER, MSGL_V, "VO Config (%dx%d->%dx%d,0x%X)\n",
p.w, p.h, p.d_w, p.d_h, p.imgfmt);
if (vf_reconfig_wrapper(vf, &p, 0) < 0) {
mp_tmsg(MSGT_CPLAYER, MSGL_WARN, "FATAL: Cannot initialize video driver.\n");
d_video->vf_initialized = -1;
return -1;
}
mp_tmsg(MSGT_VFILTER, MSGL_V, "Video filter chain:\n");
vf_print_filter_chain(MSGL_V, vf);
d_video->vf_initialized = 1;
d_video->vf_input = p;
if (opts->gamma_gamma != 1000)
video_set_colors(d_video, "gamma", opts->gamma_gamma);
if (opts->gamma_brightness != 1000)
video_set_colors(d_video, "brightness", opts->gamma_brightness);
if (opts->gamma_contrast != 1000)
video_set_colors(d_video, "contrast", opts->gamma_contrast);
if (opts->gamma_saturation != 1000)
video_set_colors(d_video, "saturation", opts->gamma_saturation);
if (opts->gamma_hue != 1000)
video_set_colors(d_video, "hue", opts->gamma_hue);
return 0;
}
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