On 5/7/2020 10:22 AM, lance.lmw...@gmail.com wrote:
> From: Limin Wang <lance.lmw...@gmail.com>
>
> Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
> ---
> libavcodec/mpegvideo_enc.c | 85
> +++++++++++++++++++++++-----------------------
> 1 file changed, 43 insertions(+), 42 deletions(-)
>
> diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
> index e1fd92c..bb7ac88 100644
> --- a/libavcodec/mpegvideo_enc.c
> +++ b/libavcodec/mpegvideo_enc.c
> @@ -298,7 +298,7 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
> avctx->pix_fmt != AV_PIX_FMT_YUV422P) {
> av_log(avctx, AV_LOG_ERROR,
> "only YUV420 and YUV422 are supported\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
> break;
> case AV_CODEC_ID_MJPEG:
> @@ -322,13 +322,13 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
>
> if (!format_supported) {
> av_log(avctx, AV_LOG_ERROR, "colorspace not supported in
> jpeg\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
> break;
> default:
> if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
> av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
> }
>
> @@ -456,7 +456,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
>
> if ((!avctx->rc_max_rate) != (!avctx->rc_buffer_size)) {
> av_log(avctx, AV_LOG_ERROR, "Either both buffer size and max rate or
> neither must be specified\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate) {
> @@ -466,12 +466,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
>
> if (avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate) {
> av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate) {
> av_log(avctx, AV_LOG_ERROR, "bitrate above max bitrate\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (avctx->rc_max_rate &&
> @@ -485,7 +485,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> avctx->bit_rate * (int64_t)avctx->time_base.num >
> avctx->rc_buffer_size * (int64_t)avctx->time_base.den) {
> av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (!s->fixed_qscale &&
> @@ -511,18 +511,18 @@ FF_ENABLE_DEPRECATION_WARNINGS
> s->codec_id != AV_CODEC_ID_H263 && s->codec_id != AV_CODEC_ID_H263P
> &&
> s->codec_id != AV_CODEC_ID_FLV1) {
> av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE) {
> av_log(avctx, AV_LOG_ERROR,
> "OBMC is only supported with simple mb decision\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (s->quarter_sample && s->codec_id != AV_CODEC_ID_MPEG4) {
> av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (s->max_b_frames &&
> @@ -530,12 +530,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
> s->codec_id != AV_CODEC_ID_MPEG1VIDEO &&
> s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
> av_log(avctx, AV_LOG_ERROR, "B-frames not supported by codec\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
> if (s->max_b_frames < 0) {
> av_log(avctx, AV_LOG_ERROR,
> "max b frames must be 0 or positive for mpegvideo based
> encoders\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if ((s->codec_id == AV_CODEC_ID_MPEG4 ||
> @@ -555,28 +555,28 @@ FF_ENABLE_DEPRECATION_WARNINGS
> (avctx->width > 2048 ||
> avctx->height > 1152 )) {
> av_log(avctx, AV_LOG_ERROR, "H.263 does not support resolutions
> above 2048x1152\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
> if ((s->codec_id == AV_CODEC_ID_H263 ||
> s->codec_id == AV_CODEC_ID_H263P) &&
> ((avctx->width &3) ||
> (avctx->height&3) )) {
> av_log(avctx, AV_LOG_ERROR, "w/h must be a multiple of 4\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO &&
> (avctx->width > 4095 ||
> avctx->height > 4095 )) {
> av_log(avctx, AV_LOG_ERROR, "MPEG-1 does not support resolutions
> above 4095x4095\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
> (avctx->width > 16383 ||
> avctx->height > 16383 )) {
> av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support resolutions
> above 16383x16383\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if (s->codec_id == AV_CODEC_ID_RV10 &&
> @@ -597,13 +597,13 @@ FF_ENABLE_DEPRECATION_WARNINGS
> s->codec_id == AV_CODEC_ID_WMV2) &&
> avctx->width & 1) {
> av_log(avctx, AV_LOG_ERROR, "width must be multiple of 2\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if ((s->avctx->flags & (AV_CODEC_FLAG_INTERLACED_DCT |
> AV_CODEC_FLAG_INTERLACED_ME)) &&
> s->codec_id != AV_CODEC_ID_MPEG4 && s->codec_id !=
> AV_CODEC_ID_MPEG2VIDEO) {
> av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> #if FF_API_PRIVATE_OPT
> @@ -618,18 +618,18 @@ FF_ENABLE_DEPRECATION_WARNINGS
> && s->codec_id != AV_CODEC_ID_MPEG2VIDEO)) {
> av_log(avctx, AV_LOG_ERROR,
> "mpeg2 style quantization not supported by codec\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if ((s->mpv_flags & FF_MPV_FLAG_CBP_RD) && !avctx->trellis) {
> av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if ((s->mpv_flags & FF_MPV_FLAG_QP_RD) &&
> s->avctx->mb_decision != FF_MB_DECISION_RD) {
> av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> if ((s->mpv_flags & FF_MPV_FLAG_QP_RD) &&
> @@ -638,7 +638,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> // Used to produce garbage with MJPEG.
> av_log(avctx, AV_LOG_ERROR,
> "QP RD is no longer compatible with MJPEG or AMV\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> #if FF_API_PRIVATE_OPT
> @@ -653,7 +653,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> av_log(avctx, AV_LOG_ERROR,
> "closed gop with scene change detection are not supported
> yet, "
> "set threshold to 1000000000\n");
> - return -1;
> + return AVERROR(ENOTSUP);
I recall someone mentioning that ENOTSUP is not available on all
targets, which is why it's rarely used in our tree.
AVERROR_PATCHWELCOME is the better code for this, and used in pretty
much all places where some feature is missing but can be added.
> }
>
> if (s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY) {
> @@ -662,12 +662,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
> av_log(avctx, AV_LOG_ERROR,
> "low delay forcing is only available for mpeg2, "
> "set strict_std_compliance to 'unofficial' or lower in
> order to allow it\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
> if (s->max_b_frames != 0) {
> av_log(avctx, AV_LOG_ERROR,
> "B-frames cannot be used with low delay\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
> }
>
> @@ -675,7 +675,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> if (avctx->qmax > 28) {
> av_log(avctx, AV_LOG_ERROR,
> "non linear quant only supports qmax <= 28 currently\n");
> - return -1;
> + return AVERROR(ENOTSUP);
> }
> }
>
> @@ -693,19 +693,19 @@ FF_ENABLE_DEPRECATION_WARNINGS
> (s->codec_id != AV_CODEC_ID_H263P)) {
> av_log(avctx, AV_LOG_ERROR,
> "multi threaded encoding not supported by codec\n");
> - return -1;
> + return AVERROR(ENOTSUP);
> }
>
> if (s->avctx->thread_count < 1) {
> av_log(avctx, AV_LOG_ERROR,
> "automatic thread number detection not supported by codec, "
> "patch welcome\n");
> - return -1;
> + return AVERROR_PATCHWELCOME;
> }
>
> if (!avctx->time_base.den || !avctx->time_base.num) {
> av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> #if FF_API_PRIVATE_OPT
> @@ -755,7 +755,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> "the maximum admitted value for the timebase denominator "
> "is %d\n", s->avctx->time_base.num, s->avctx->time_base.den,
> (1 << 16) - 1);
> - return -1;
> + return AVERROR(EINVAL);
> }
> s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
>
> @@ -775,21 +775,22 @@ FF_ENABLE_DEPRECATION_WARNINGS
> case AV_CODEC_ID_AMV:
> s->out_format = FMT_MJPEG;
> s->intra_only = 1; /* force intra only for jpeg */
> - if (!CONFIG_MJPEG_ENCODER ||
> - ff_mjpeg_encode_init(s) < 0)
> - return -1;
> + if (!CONFIG_MJPEG_ENCODER)
> + return AVERROR_ENCODER_NOT_FOUND;
> + if ((ret = ff_mjpeg_encode_init(s)) < 0)
> + return ret;
> avctx->delay = 0;
> s->low_delay = 1;
> break;
> case AV_CODEC_ID_H261:
> if (!CONFIG_H261_ENCODER)
> - return -1;
> + return AVERROR_ENCODER_NOT_FOUND;
> if (ff_h261_get_picture_format(s->width, s->height) < 0) {
> av_log(avctx, AV_LOG_ERROR,
> "The specified picture size of %dx%d is not valid for the
> "
> "H.261 codec.\nValid sizes are 176x144, 352x288\n",
> s->width, s->height);
> - return -1;
> + return AVERROR(EINVAL);
> }
> s->out_format = FMT_H261;
> avctx->delay = 0;
> @@ -798,7 +799,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> break;
> case AV_CODEC_ID_H263:
> if (!CONFIG_H263_ENCODER)
> - return -1;
> + return AVERROR_ENCODER_NOT_FOUND;
> if (ff_match_2uint16(ff_h263_format, FF_ARRAY_ELEMS(ff_h263_format),
> s->width, s->height) == 8) {
> av_log(avctx, AV_LOG_ERROR,
> @@ -806,7 +807,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> "the H.263 codec.\nValid sizes are 128x96, 176x144, "
> "352x288, 704x576, and 1408x1152. "
> "Try H.263+.\n", s->width, s->height);
> - return -1;
> + return AVERROR(EINVAL);
> }
> s->out_format = FMT_H263;
> avctx->delay = 0;
> @@ -892,7 +893,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> s->low_delay = 1;
> break;
> default:
> - return -1;
> + return AVERROR(EINVAL);
> }
>
> #if FF_API_PRIVATE_OPT
> @@ -913,8 +914,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
>
> /* init */
> ff_mpv_idct_init(s);
> - if (ff_mpv_common_init(s) < 0)
> - return -1;
> + if ((ret = ff_mpv_common_init(s)) < 0)
> + return ret;
>
> ff_fdctdsp_init(&s->fdsp, avctx);
> ff_me_cmp_init(&s->mecc, avctx);
> @@ -1020,8 +1021,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
> 31, 0);
> }
>
> - if (ff_rate_control_init(s) < 0)
> - return -1;
> + if ((ret = ff_rate_control_init(s)) < 0)
> + return ret;
>
> #if FF_API_PRIVATE_OPT
> FF_DISABLE_DEPRECATION_WARNINGS
>
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